CN1511357A - 可调双频天线系统 - Google Patents

可调双频天线系统 Download PDF

Info

Publication number
CN1511357A
CN1511357A CNA028105532A CN02810553A CN1511357A CN 1511357 A CN1511357 A CN 1511357A CN A028105532 A CNA028105532 A CN A028105532A CN 02810553 A CN02810553 A CN 02810553A CN 1511357 A CN1511357 A CN 1511357A
Authority
CN
China
Prior art keywords
frequency
antenna
capacitor
matching network
transceiver
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA028105532A
Other languages
English (en)
Other versions
CN100481614C (zh
Inventor
���ס�����˹����
安德雷·格莱尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sierra Wireless Inc
Original Assignee
Sierra Wireless Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25343674&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1511357(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sierra Wireless Inc filed Critical Sierra Wireless Inc
Publication of CN1511357A publication Critical patent/CN1511357A/zh
Application granted granted Critical
Publication of CN100481614C publication Critical patent/CN100481614C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages

Abstract

本发明提供了一种可调双频天线系统，该系统包括一收发器、一匹配网络、及一天线。该匹配网络可以在第一和第二频率上将天线调谐至收发器。相应地，该匹配网络具有一可变电容器、一电感器和一第二电容器。选择可变电容器的电容值可在第一频率和第二频率调谐天线，以使该系统就能够在两个带宽上发射和接收电磁能量。通过选择可变电容器的值、电感器的值、以及第二电容器的值，在第一频率和第二频率处，可将驻波比降到最小。

Description

可调双频天线系统
技术领域
本发明一般涉及天线的匹配网络(matching network)，尤其涉及用于可调双频天线的匹配网络。
背景技术
为了保证最大限度地将能量从射频(RF)发射器传送到天线，天线与用于频率发射的发射器之间的阻抗应该是匹配的。如果阻抗匹配，那么天线将最高效地发射信号。然而，如果阻抗不匹配，发射能量则会损耗，天线的性能会下降。
为了匹配发射器与天线之间的阻抗，需要设置一个匹配网络。对于普通偶极天线，匹配网络会使偶极天线的阻抗与发射器的阻抗匹配。参看图1，示出了现有技术中用于发射器12和偶极天线14的匹配网络10。发射器10产生一RF信号，通过长度为l的偶极天线12发射出去。通常，长度l由所发射信号的波长确定。例如，偶极天线的长度可以是波长的1/4、1/2、或3/4。
现有技术中的匹配网络10包括一电感器16，其第一导线与发射器12的输出相连接。此外，匹配网络10包括连接在电感器16的第二导线与接地之间的电容器18。另外，电感器16的第二导线与偶极天线14相连。这样，电感器16和电容器18就形成一LC网络，通过选择电容器18与电感器16的值，就能匹配发射器12与规定频率的偶极天线14之间的阻抗。
发射器12将在规定频带内生成RF信号。匹配网络10在该规定频带内实现发射器12与天线14之间的阻抗匹配。通过选择电感器16的值和电容器18的值，就可以在期望的频率带宽实现适合的阻抗匹配。通过改变电感器16和电容器18的值，就可以调节匹配网络10，从而，天线14就可在规定的频率带宽内发射信号。
参看图2，示出了利用现有技术的匹配网络10的情况下，传播信号的发射能量值与频率之间的关系。具体地说，示出了使用图1中与现有技术的匹配网络10及发射器12相连的天线14传播信号的电压驻波比(SWR)。很明显，在频率f1和f2之间，即SWR最小处，天线14将有效发射信号。而在该频带以外，SWR会增加，因此天线14不能高效地发射信号，信号的大部分会被反射回来。因此，只有在频率f1和f2之间发射时，发射器12传播的能量才会高效发射。
因此，现有技术的匹配网络10存在只能调节到单个规定带宽的不足。例如，电容器18和电感器16值的选择必须针对单一的频率f1和f2之间的频带，从而在该频带外的能量将不能实现高效发射。
目前，无线电话能够在两个不同的频带上发射信号。例如，第一频带可以在824-895MHz之间(即低频带)而第二频带可以1.85-1.99GHz之间(即高频带)。为了能在低频带和高频带均能发射信号，天线就必须能高效发射在两个频带内产生的信号。然而，如上如述，具有偶极天线14的现有技术匹配网络10只能在单一频带内高效发射信号。因此，对于双频带发射方案，必须使用其它可选的信号发射方法。
具体地，使用三维天线在两个频带上发射信号。而三维天线体积庞大，不方便使用。例如，对于双频无线电话，无线电话外壳的设计要根据三维天线的物理尺寸设计。然而，这很不实际，因为无线设备具体体现为计算机或PDA的插入式外设卡(即PCMCIA卡)。卡的尺寸导致不可能使用三维天线。
可选地，可以使用两副天线，即一个频带使用一副天线。通过设置，每副天线都可发射高频或低频信号。为了正确操作，两副天线将与一个频率开关相连，该频率开关会将信号引到正确的天线上。例如，开关会将低频信号引到低频信号配置天线，而将高频信号引到高频信号配置天线。然而，双天线和频率开关会增加无线电话的尺寸和复杂性。两副天线占用空间是一副天线的两倍，而频率开关会增加系统的成本和复杂性。因此，使用双天线不适合需要插入计算机或PDA的无线设备。
在双频天线系统的设计中，本发明通过设置一匹配网络(能够使用单个偶极天线用于两个频带)解决上述问题。具体地说，本发明的匹配网络能够使用一个单一偶极天线，高效发射两个频段的信号，从而降低双频段天线系统的尺寸和复杂性。
发明内容
根据本发明，提供了一个用于高频带和低频带的可调双频天线系统。该系统包括一个收发器和与收发器电连接的匹配网络。显然，该收发器可以是一个发射器或一个接收器，而不会影响系统的功能性。该系统进一步包括一副与匹配网络电连接的天线。通常，天线的长度约为第一和第二频率的最小波长长度的1/4。通过操作匹配网络，可在第一和第二频率使天线的阻抗与收发器的阻抗匹配。匹配网络包括可变电容器、第二电容器、以及电感器，它们用于在第一和第二频率对收发器的匹配网络和天线实施调节。
在本优选实施例中，操作可变电容可将天线调节到以第一频率为中心频率的第一频带以及以第二频率为中心频率的第二频带。为了调谐第一频率和第二频率，可设置一个可改变可变电容器电容的控制器。显然，通过选择可变电容、电感器、以及第二电容器的值，以便在第一频率和第二频率处，将系统的电压驻波比(SWR)降到最小。
根据本发明，提供了用于天线和收发器的匹配网络。匹配网络包括与天线电连接的一个电感器和与电感器和接地电压电连通的电容。该系统还包括与电感器和收发器电连通的一个可变电容器。通过操作可变电容，可在第一和第二频率使天线的阻抗与收发器的阻抗匹配。因此，可变电容器具有对应调谐到第一频率的第一电容值和调谐到第二频率的第二电容值。选择的第一和第二电容值可在第一频率和第二频率使系统的驻波比降到最小。
附图说明
参照附图，本发明的这些和其它特性将变得更加清楚：
图1为现有技术无线匹配网络及天线的电路图；
图2为图1中所示天线和现有技术匹配网络的驻波比(SWR)与频率之间的关系图；
图3为根据本发明构造的天线匹配网络和天线的电路框图；以及
图4示出了图2中天线与匹配网络的SWR与频率之间的关系。
具体实施方式
现在参见附图，其中附图的目的仅为显示而非限制本发明的优选实施例。图3为双频段天线系统100的电路框图。天线系统100包括与匹配网络104电连接的收发器102。对于本领域技术人员而言，很显然，根据具体应用，收发器100也可以是接收器或发射器。如图3所示，匹配网络104与长度为l的偶极天线106相连。长度l通常为较低频带波长长度的1/4。匹配网络104用于实现两种规定频率带宽的天线106与收发器102之间的阻抗匹配。
具体地，参照图3，匹配网络104具有一个可变电容器108，其第一导线与收发器102电连接。可变电容器108的第二导线与电感器110的第一导线电连接。电感器110的第二导线与天线106以及第二电容器112电连接。如图3所示，具体地，第二电容器112具有连接在天线106和电感器110之间的第一导线、以及接地的第二导线。
匹配网络104用于在两个频带上实现天线106与收发器102之间的阻抗匹配。通过加入可变电容器108，就可以将天线系统100调到高频带Bh和低频带Bl。在优选实施例中，电容器108的取值可以在制造时根据使用的两个频带选取。作为选择，可以预见到可变电容器108可由控制器114控制。具体地，控制器114可以根据要发送和/或接收的频率改变可变电容器108的电容。确定可变电容器108以及电感器110和电容器112的取值，以在高频带Bh和低频带Bl的中心频率处高效地发射来自收发器102的信号。
参看图4，示出了频率与天线系统100的SWR之间的关系。可以看出，位于高频带Bh和低频带Bl的中心处，存在SWR的两个最小值。因此，在f1与f2之间和f3与f4之间会出现高效的能量传输。在其它频率处，驻波比(SWR)会增加至一个点，而从收发器102到天线106的能量转移效率降低。在无线通信设备中，低频段Bl可在约824-895MHz之间，而高频带Bh可在约1.85-1.99GHz之间。显然，由于应用类型的不同，高频带Bh和低频带Bl的值会有所不同；因此，要相应地选取可变电容器108、电感器110、和电容器112的取值。
显然，本发明提供了一种物理尺寸很小的可调双频天线系统。可以使用标准的偶极天线106用于信号的传输。相应地，为了实现系统100的双频段调谐，匹配网络104只需要一个额外部件(即，可变电容器108)。因此，对于尺寸要求严格的无线应用(如PCMCIA和PC卡的无线调制解调器)而言，天线系统100会很理想。
为实现天线系统100的操作，必须首先选定B1和Bh的取值。具体地讲，就必须知道系统100要发送和接收的两种信号的频带Bl和Bh。一旦知道了频带，就可以根据本领域内用于阻抗匹配的已知方法，选取可变电容器108、电感器110、以及第二电容器112的值。如上所述，选取的可变电容器108、电感器110、以及第二电容器112的值要在Bl和Bh处使SWR最小。
通过经天线106接收信号使系统100运行。通过匹配网络104，将由天线106接收的信号的阻抗与收发器102匹配，如上所述，这样信号的全部能量就能够被收发器102接收。类似地，在发射模式中，通过收发器102生成一个信号到匹配网络104使系统100运行，匹配网络104再将信号的阻抗与天线106匹配。在这种方式中，如果频率落在Bl和Bh之间，匹配网络104就能保证信号的高效发射。
显然，对于本领域技术人员而言，可以很容易对本发明进行其它修改与改进，例如使用一种结构不同于偶极天线的不同类型天线。因此，这里描述与说明的部件的特定组合，仅用于描述本发明的一个特定实施例，而不是在本发明的精神与范围内限制其它可选装置的使用。

Claims (17)

1.一种可调双频天线系统，所述系统包括：
一收发器；
一电连接至所述收发器的匹配网络；以及
一电连接至所述匹配网络的天线；
其中，通过操作所述匹配网络，在第一频率和第二频率使所述收发器与所述天线的阻抗匹配。
2.根据权利要求1所述的系统，其中，通过操作所述匹配网络，匹配所述收发器的阻抗，所述收发器用于在中心频率为所述第一频率的第一频带以及中心频率为所述第二频率的第二频带。
3.根据权利要求1所述的系统，其中，所述匹配网络包括第一电容器、第二电容器、以及电感器，以调谐用于所述第一频率和所述第二频率的天线。
4.根据权利要求3所述的系统，其中，通过选择所述第一电容器的值，使所述匹配网络能够调谐所述第一频率和第二频率。
5.根据权利要求4所述的系统，其中，所述第一电容器为可变电容器，可进行操作而改变其电容，所述可变电容器用于所述第一频率和所述第二频率。
6.根据权利要求5所述的系统，其中，所述匹配网络还包括能够改变所述第一电容器的电容的控制器。
7.根据权利要求6所述的系统，其中，通过选择所述第一电容器的值、所述电感器的值、以及所述第二电容的值，在所述第一频率和所述第二频率处使所述系统的驻波比降到最小。
8.根据权利要求1所述的系统，其中，天线的长度l约等于所述第一频率和所述第二频率中最低频率的波长的1/4。
9.根据权利要求1所述的系统，其中，所述收发器为发射器。
10.根据权利要求1所述的系统，其中，所述收发器为接收器。
11.用于天线和收发器的匹配网络，所述匹配网络包括：
与所述天线电连通的电感器；
与所述电感器、所述天线、以及接地电压电连通的第一电容器；以及
与所述电感器和所述收发器电连通的第二电容器，通过操作第二电容器，在第一频率和第二频率处可使所述收发器的阻抗与所述天线匹配。
12.根据权利要求11所述的匹配网络，其中，所述第二电容器为可变电容器，在第一频率和第二频率处，通过选择所述可变电容器的值可使所述收发器的阻抗与所述天线匹配。
13.根据权利要求12所述的匹配网络，还包括能够改变所述可变电容器的电容的控制器。
14.根据权利要求13中所述的匹配网络，其中，通过选择所述可变电容器的值、所述电感器的值、以及所述电容器的值，在所述第一频率和所述第二频率处使所述收发器和所述天线之间的驻波比降到最低。
15.一种在配备有收发器和天线的天线系统中以第一频率和第二频率执行能量有效传输的方法，所述方法包括以下步骤：
a)提供一匹配网络；
b)使用所述匹配网络，在所述第一频率使所述系统的驻波比降到最低；以及
c)使用所述匹配网络，在所述第二频率使所述系统的驻波比降到最低。
16.根据权利要求15中所述的方法，其中，步骤(a)包括提供具有第一电容器、电感器、和第二电容器的匹配网络，用于在所述第一频率和所述第二频率处使所述系统的SWR降到最低。
17.根据权利要求16中所述的系统，其中，步骤(a)还包括选择所述可变电容器的值、所述电感器的值、以及所述第二电容器的值，以便在所述第一频率和所述第二频率处使所述驻波比降到最低。
CNB028105532A 2001-05-23 2002-05-21 可调双频天线系统 Expired - Fee Related CN100481614C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/864,614 2001-05-23
US09/864,614 US6400336B1 (en) 2001-05-23 2001-05-23 Tunable dual band antenna system

Publications (2)

Publication Number Publication Date
CN1511357A true CN1511357A (zh) 2004-07-07
CN100481614C CN100481614C (zh) 2009-04-22

Family

ID=25343674

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB028105532A Expired - Fee Related CN100481614C (zh) 2001-05-23 2002-05-21 可调双频天线系统

Country Status (5)

Country Link
US (2) US6400336B1 (zh)
EP (1) EP1396048A1 (zh)
KR (2) KR20040002994A (zh)
CN (1) CN100481614C (zh)
WO (1) WO2002095872A1 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1878254B (zh) * 2005-06-07 2010-05-12 株式会社日立制作所 天线、具备天线的无线模块、无线单元和无线装置
CN103166654A (zh) * 2011-12-14 2013-06-19 美国频顺通讯科技公司 宽带rf前端
CN103563261A (zh) * 2011-05-27 2014-02-05 高通股份有限公司 可调谐多频带接收机
CN104871459A (zh) * 2012-10-30 2015-08-26 爱立信调制解调器有限公司 对于集成天线调谐器的驻波比量表
CN105098381A (zh) * 2015-06-19 2015-11-25 联想(北京)有限公司 一种天线装置及电子设备
WO2015192289A1 (zh) * 2014-06-16 2015-12-23 华为技术有限公司 基于可变电容的天线调节方法及相关装置
CN106104914A (zh) * 2014-04-11 2016-11-09 康普技术有限责任公司 消除多频带辐射阵列中的共振的方法
CN106539568A (zh) * 2015-12-10 2017-03-29 悦享趋势科技（北京）有限责任公司 可佩戴式生理监测设备及其天线系统
CN110085994A (zh) * 2013-11-22 2019-08-02 华为终端有限公司 一种可调天线及终端

Families Citing this family (204)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4019639B2 (ja) * 2001-02-07 2007-12-12 松下電器産業株式会社 アンテナ装置
US6400336B1 (en) * 2001-05-23 2002-06-04 Sierra Wireless, Inc. Tunable dual band antenna system
US20040036655A1 (en) * 2002-08-22 2004-02-26 Robert Sainati Multi-layer antenna structure
KR100485350B1 (ko) * 2002-09-30 2005-04-28 주식회사 팬택앤큐리텔 안테나 매칭 선택 장치
US6791504B1 (en) 2003-03-12 2004-09-14 R. A. Miller Industries, Inc. Tunable antenna system
US7129907B2 (en) * 2003-10-03 2006-10-31 Sensor Systems, Inc. Broadband tunable antenna and transceiver systems
US7088299B2 (en) * 2003-10-28 2006-08-08 Dsp Group Inc. Multi-band antenna structure
JP4469632B2 (ja) * 2004-02-24 2010-05-26 富士通株式会社 アンテナ整合回路用制御装置
US10575376B2 (en) 2004-02-25 2020-02-25 Lynk Labs, Inc. AC light emitting diode and AC LED drive methods and apparatus
US10499465B2 (en) 2004-02-25 2019-12-03 Lynk Labs, Inc. High frequency multi-voltage and multi-brightness LED lighting devices and systems and methods of using same
WO2011143510A1 (en) 2010-05-12 2011-11-17 Lynk Labs, Inc. Led lighting system
US8228194B2 (en) * 2004-10-28 2012-07-24 University Of Pittsburgh - Of The Commonwealth System Of Higher Education Recharging apparatus
US7525436B2 (en) * 2005-04-21 2009-04-28 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Methods and apparatus for reducing power consumption of an active transponder
WO2006116168A2 (en) * 2005-04-21 2006-11-02 Univeristy Of Pittsburgh-Of The Commonwealth System Of Higher Education Methods and apparatus for reducing power consumption of an active transponder
US20070223599A1 (en) * 2005-07-25 2007-09-27 Sysair, Inc., A Delaware Corporation Cellular PC modem architecture and method of operation
US7640040B2 (en) * 2005-08-22 2009-12-29 Kyocera Corporation Systems and methods for tuning an antenna configuration in a mobile communication device
US7616163B2 (en) * 2006-01-25 2009-11-10 Sky Cross, Inc. Multiband tunable antenna
WO2007101080A2 (en) * 2006-02-23 2007-09-07 University Of Pittsburgh-Of The Commonwealth System Of Higher Education Methods and apparatus for switching a transponder to an active state, and asset management systems employing same
KR100812098B1 (ko) * 2006-09-07 2008-03-12 주식회사 휴니드 테크놀러지스 주파수 도약형 단파 무전기 안테나 고속 동조 장치 및 그방법
US20080122712A1 (en) * 2006-11-28 2008-05-29 Agile Rf, Inc. Tunable antenna including tunable capacitor inserted inside the antenna
KR100763994B1 (ko) * 2006-12-08 2007-10-08 한국전자통신연구원 이동통신 서비스에 따라 주파수 대역폭을 가변하는 안테나정합 장치 및 이를 포함하는 송수신 장치
US20080194288A1 (en) * 2007-02-12 2008-08-14 Broadcom Corporation Integrated circuit including packet network transceivers and fm receiver with fm antenna control
US7746290B2 (en) * 2007-09-13 2010-06-29 Sony Ericsson Mobile Communications Ab Adaptive antenna matching
US11317495B2 (en) 2007-10-06 2022-04-26 Lynk Labs, Inc. LED circuits and assemblies
US11297705B2 (en) 2007-10-06 2022-04-05 Lynk Labs, Inc. Multi-voltage and multi-brightness LED lighting devices and methods of using same
KR100957765B1 (ko) * 2007-12-27 2010-05-12 주식회사 알.에프.텍 듀얼밴드 안테나 모듈 및 이를 포함하는 전자기기
US8355688B2 (en) * 2008-02-19 2013-01-15 Broadcom Corporation Method and system for frequency selection using microstrip transceivers for high-speed applications
JP2009284459A (ja) * 2008-04-22 2009-12-03 Panasonic Corp アンテナ整合部とこれを用いた高周波受信部
US8514056B2 (en) * 2008-09-25 2013-08-20 University of Pittsburgh—of the Commonwealth System of Higher Education System and method for real time asset location and tracking
US8905310B2 (en) * 2009-03-31 2014-12-09 Infineon Technologies Ag Contactless data reception using a cancellation circuit
US8903333B1 (en) * 2010-06-16 2014-12-02 Rf Micro Devices, Inc. Adaptive antenna tuner for a transceiver
TWI407691B (zh) * 2010-08-24 2013-09-01 Htc Corp 天線模組及其阻抗匹配方法
US8712348B2 (en) 2010-09-01 2014-04-29 Samsung Electronics Co., Ltd. Apparatus and method for controlling a tunable matching network in a wireless network
US9020455B1 (en) 2010-09-01 2015-04-28 Rf Micro Devices, Inc. Power control system for a receiver chain in a transceiver
KR101472238B1 (ko) * 2010-11-25 2014-12-11 에프코스 아게 개선된 안테나 성능을 가진 모바일 통신장치
WO2013026053A1 (en) 2011-08-18 2013-02-21 Lynk Labs, Inc. Devices and systems having ac led circuits and methods of driving the same
US9247597B2 (en) 2011-12-02 2016-01-26 Lynk Labs, Inc. Color temperature controlled and low THD LED lighting devices and systems and methods of driving the same
US8639286B2 (en) * 2011-12-23 2014-01-28 Broadcom Corporation RF transmitter having broadband impedance matching for multi-band application support
US10009065B2 (en) 2012-12-05 2018-06-26 At&T Intellectual Property I, L.P. Backhaul link for distributed antenna system
US9113347B2 (en) 2012-12-05 2015-08-18 At&T Intellectual Property I, Lp Backhaul link for distributed antenna system
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9525524B2 (en) 2013-05-31 2016-12-20 At&T Intellectual Property I, L.P. Remote distributed antenna system
US8897697B1 (en) 2013-11-06 2014-11-25 At&T Intellectual Property I, Lp Millimeter-wave surface-wave communications
US9209902B2 (en) 2013-12-10 2015-12-08 At&T Intellectual Property I, L.P. Quasi-optical coupler
WO2015100654A1 (zh) * 2013-12-31 2015-07-09 华为终端有限公司 环形天线及移动终端
US9692101B2 (en) 2014-08-26 2017-06-27 At&T Intellectual Property I, L.P. Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9628854B2 (en) 2014-09-29 2017-04-18 At&T Intellectual Property I, L.P. Method and apparatus for distributing content in a communication network
US9615269B2 (en) 2014-10-02 2017-04-04 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9503189B2 (en) 2014-10-10 2016-11-22 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9762289B2 (en) 2014-10-14 2017-09-12 At&T Intellectual Property I, L.P. Method and apparatus for transmitting or receiving signals in a transportation system
US9973299B2 (en) 2014-10-14 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9653770B2 (en) 2014-10-21 2017-05-16 At&T Intellectual Property I, L.P. Guided wave coupler, coupling module and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9520945B2 (en) 2014-10-21 2016-12-13 At&T Intellectual Property I, L.P. Apparatus for providing communication services and methods thereof
US9627768B2 (en) 2014-10-21 2017-04-18 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9564947B2 (en) 2014-10-21 2017-02-07 At&T Intellectual Property I, L.P. Guided-wave transmission device with diversity and methods for use therewith
US9577306B2 (en) 2014-10-21 2017-02-21 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9312919B1 (en) 2014-10-21 2016-04-12 At&T Intellectual Property I, Lp Transmission device with impairment compensation and methods for use therewith
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US9654173B2 (en) 2014-11-20 2017-05-16 At&T Intellectual Property I, L.P. Apparatus for powering a communication device and methods thereof
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9461706B1 (en) 2015-07-31 2016-10-04 At&T Intellectual Property I, Lp Method and apparatus for exchanging communication signals
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US9680670B2 (en) 2014-11-20 2017-06-13 At&T Intellectual Property I, L.P. Transmission device with channel equalization and control and methods for use therewith
US9544006B2 (en) 2014-11-20 2017-01-10 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US10144036B2 (en) 2015-01-30 2018-12-04 At&T Intellectual Property I, L.P. Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9654152B2 (en) * 2015-03-02 2017-05-16 Ford Global Technologies, Llc Service provider adaptive vehicle antenna
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US9948354B2 (en) 2015-04-28 2018-04-17 At&T Intellectual Property I, L.P. Magnetic coupling device with reflective plate and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9490869B1 (en) 2015-05-14 2016-11-08 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US10679767B2 (en) 2015-05-15 2020-06-09 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US10650940B2 (en) 2015-05-15 2020-05-12 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US10154493B2 (en) 2015-06-03 2018-12-11 At&T Intellectual Property I, L.P. Network termination and methods for use therewith
US10812174B2 (en) 2015-06-03 2020-10-20 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US10103801B2 (en) 2015-06-03 2018-10-16 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US10348391B2 (en) 2015-06-03 2019-07-09 At&T Intellectual Property I, L.P. Client node device with frequency conversion and methods for use therewith
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US10142086B2 (en) 2015-06-11 2018-11-27 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US9608692B2 (en) 2015-06-11 2017-03-28 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9667317B2 (en) 2015-06-15 2017-05-30 At&T Intellectual Property I, L.P. Method and apparatus for providing security using network traffic adjustments
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9640850B2 (en) 2015-06-25 2017-05-02 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US9509415B1 (en) 2015-06-25 2016-11-29 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9836957B2 (en) 2015-07-14 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for communicating with premises equipment
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US10170840B2 (en) 2015-07-14 2019-01-01 At&T Intellectual Property I, L.P. Apparatus and methods for sending or receiving electromagnetic signals
US9628116B2 (en) 2015-07-14 2017-04-18 At&T Intellectual Property I, L.P. Apparatus and methods for transmitting wireless signals
US10033107B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US9722318B2 (en) 2015-07-14 2017-08-01 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US10033108B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US10341142B2 (en) 2015-07-14 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor
US10320586B2 (en) 2015-07-14 2019-06-11 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US9608740B2 (en) 2015-07-15 2017-03-28 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9793951B2 (en) 2015-07-15 2017-10-17 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US10784670B2 (en) 2015-07-23 2020-09-22 At&T Intellectual Property I, L.P. Antenna support for aligning an antenna
US10020587B2 (en) 2015-07-31 2018-07-10 At&T Intellectual Property I, L.P. Radial antenna and methods for use therewith
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US10009901B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method, apparatus, and computer-readable storage medium for managing utilization of wireless resources between base stations
US9705571B2 (en) 2015-09-16 2017-07-11 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system
US10079661B2 (en) 2015-09-16 2018-09-18 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a clock reference
US10051629B2 (en) 2015-09-16 2018-08-14 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an in-band reference signal
US10009063B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal
US10136434B2 (en) 2015-09-16 2018-11-20 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US10074890B2 (en) 2015-10-02 2018-09-11 At&T Intellectual Property I, L.P. Communication device and antenna with integrated light assembly
US9882277B2 (en) 2015-10-02 2018-01-30 At&T Intellectual Property I, Lp Communication device and antenna assembly with actuated gimbal mount
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US10051483B2 (en) 2015-10-16 2018-08-14 At&T Intellectual Property I, L.P. Method and apparatus for directing wireless signals
US10665942B2 (en) 2015-10-16 2020-05-26 At&T Intellectual Property I, L.P. Method and apparatus for adjusting wireless communications
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
CN106921034B (zh) 2015-12-26 2019-03-08 小米科技有限责任公司 天线组件及电子设备
US9912419B1 (en) 2016-08-24 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for managing a fault in a distributed antenna system
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US10291311B2 (en) 2016-09-09 2019-05-14 At&T Intellectual Property I, L.P. Method and apparatus for mitigating a fault in a distributed antenna system
US11032819B2 (en) 2016-09-15 2021-06-08 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a control channel reference signal
US10135147B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via an antenna
US10135146B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via circuits
US10340600B2 (en) 2016-10-18 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via plural waveguide systems
US9876605B1 (en) 2016-10-21 2018-01-23 At&T Intellectual Property I, L.P. Launcher and coupling system to support desired guided wave mode
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US9991580B2 (en) 2016-10-21 2018-06-05 At&T Intellectual Property I, L.P. Launcher and coupling system for guided wave mode cancellation
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10498044B2 (en) 2016-11-03 2019-12-03 At&T Intellectual Property I, L.P. Apparatus for configuring a surface of an antenna
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10535928B2 (en) 2016-11-23 2020-01-14 At&T Intellectual Property I, L.P. Antenna system and methods for use therewith
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10694379B2 (en) 2016-12-06 2020-06-23 At&T Intellectual Property I, L.P. Waveguide system with device-based authentication and methods for use therewith
US10819035B2 (en) 2016-12-06 2020-10-27 At&T Intellectual Property I, L.P. Launcher with helical antenna and methods for use therewith
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10727599B2 (en) 2016-12-06 2020-07-28 At&T Intellectual Property I, L.P. Launcher with slot antenna and methods for use therewith
US10755542B2 (en) 2016-12-06 2020-08-25 At&T Intellectual Property I, L.P. Method and apparatus for surveillance via guided wave communication
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US10777873B2 (en) 2016-12-08 2020-09-15 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10938108B2 (en) 2016-12-08 2021-03-02 At&T Intellectual Property I, L.P. Frequency selective multi-feed dielectric antenna system and methods for use therewith
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
US10916969B2 (en) 2016-12-08 2021-02-09 At&T Intellectual Property I, L.P. Method and apparatus for providing power using an inductive coupling
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices
US11079077B2 (en) 2017-08-31 2021-08-03 Lynk Labs, Inc. LED lighting system and installation methods
TWI819324B (zh) * 2021-06-25 2023-10-21 瑞昱半導體股份有限公司 具有迴授校正機制的通訊裝置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725942A (en) * 1965-04-22 1973-04-03 Allen Elect Equip Vehicle-mounted antenna and coupling circuit therefor
US4571595A (en) * 1983-12-05 1986-02-18 Motorola, Inc. Dual band transceiver antenna
GB2178616B (en) * 1985-07-26 1989-04-26 Marconi Co Ltd Impedance matching arrangement
US5835067A (en) * 1994-04-28 1998-11-10 Goodman; Edward A. Short vertical 160 meter band antenna
WO1996029756A1 (en) * 1995-03-20 1996-09-26 Minnesota Mining And Manufacturing Company Dual frequency antenna with integral diplexer
JPH09307331A (ja) * 1996-03-11 1997-11-28 Murata Mfg Co Ltd 整合回路及びそれを用いたアンテナ装置
JP3347967B2 (ja) * 1996-03-13 2002-11-20 モトローラ・インコーポレイテッド アンテナ作動スイッチを備えた無線通信装置
GB2323713B (en) * 1997-03-27 1999-03-03 Andrew Jesman Antenna more especially for motor vehicles
US6075488A (en) * 1997-04-29 2000-06-13 Galtronics Ltd. Dual-band stub antenna
US6094178A (en) * 1997-11-14 2000-07-25 Ericsson, Inc. Dual mode quadrifilar helix antenna and associated methods of operation
EP1030401B1 (en) * 1998-06-10 2005-11-02 Matsushita Electric Industrial Co., Ltd. Radio antenna device
US6067052A (en) * 1998-09-18 2000-05-23 Lucent Technologies Inc. Loop antenna configuration for printed wire board applications
US6134427A (en) * 1998-09-30 2000-10-17 Conexant Systems, Inc. Using a single low-noise amplifier in a multi-band wireless station
SE513469C2 (sv) * 1998-11-13 2000-09-18 Allgon Ab En anpassad antennanordning och en portabel radiokommunikationsanordning omfattande en anpassad antennanordning
US6400336B1 (en) * 2001-05-23 2002-06-04 Sierra Wireless, Inc. Tunable dual band antenna system

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1878254B (zh) * 2005-06-07 2010-05-12 株式会社日立制作所 天线、具备天线的无线模块、无线单元和无线装置
CN103563261B (zh) * 2011-05-27 2016-12-07 高通股份有限公司 可调谐多频带接收机
CN103563261A (zh) * 2011-05-27 2014-02-05 高通股份有限公司 可调谐多频带接收机
US9002309B2 (en) 2011-05-27 2015-04-07 Qualcomm Incorporated Tunable multi-band receiver
CN103166654A (zh) * 2011-12-14 2013-06-19 美国频顺通讯科技公司 宽带rf前端
CN104871459A (zh) * 2012-10-30 2015-08-26 爱立信调制解调器有限公司 对于集成天线调谐器的驻波比量表
CN104871459B (zh) * 2012-10-30 2017-05-17 瑞典爱立信有限公司 无线通信装置、基站、rf传输电路及相关方法
CN110085994B (zh) * 2013-11-22 2021-08-20 华为终端有限公司 一种可调天线及终端
CN110085994A (zh) * 2013-11-22 2019-08-02 华为终端有限公司 一种可调天线及终端
CN106104914A (zh) * 2014-04-11 2016-11-09 康普技术有限责任公司 消除多频带辐射阵列中的共振的方法
CN106104914B (zh) * 2014-04-11 2019-02-22 康普技术有限责任公司 消除多频带辐射阵列中的共振的方法
CN105518936A (zh) * 2014-06-16 2016-04-20 华为技术有限公司 基于可变电容的天线调节方法及相关装置
CN105518936B (zh) * 2014-06-16 2019-01-08 华为技术有限公司 基于可变电容的天线调节方法及相关装置
US10199727B2 (en) 2014-06-16 2019-02-05 Huawei Technologies Co., Ltd. Variable capacitor-based antenna adjustment method and related apparatus
WO2015192289A1 (zh) * 2014-06-16 2015-12-23 华为技术有限公司 基于可变电容的天线调节方法及相关装置
CN105098381A (zh) * 2015-06-19 2015-11-25 联想(北京)有限公司 一种天线装置及电子设备
CN106539568A (zh) * 2015-12-10 2017-03-29 悦享趋势科技（北京）有限责任公司 可佩戴式生理监测设备及其天线系统

Also Published As

Publication number Publication date
KR20040002994A (ko) 2004-01-07
US6400336B1 (en) 2002-06-04
US6697030B2 (en) 2004-02-24
EP1396048A1 (en) 2004-03-10
US20020175870A1 (en) 2002-11-28
CN100481614C (zh) 2009-04-22
KR20090060310A (ko) 2009-06-11
WO2002095872A1 (en) 2002-11-28

Similar Documents

Publication Publication Date Title
CN100481614C (zh) 可调双频天线系统
JP5603072B2 (ja) 効率をさらに良くし、コンパクトな大きさのアンテナを維持するためにアンテナのパラメータを順応良く制御するための方法及び装置。
US8525734B2 (en) Antenna device
US9397388B2 (en) Dual feed antenna
US7043285B2 (en) Wireless terminal with dual band antenna arrangement and RF module for use with dual band antenna arrangement
US6650295B2 (en) Tunable antenna for wireless communication terminals
KR100903445B1 (ko) 복수의 안테나를 갖는 무선 단말기
JP4875166B2 (ja) ２つの素子が共通フィードを共有することを可能にする装置
CN107181045A (zh) 一种移动终端的天线及具有该天线的移动终端
EP2301108B1 (en) An antenna arrangement
CN101069360A (zh) 分布式双工器
TW201635647A (zh) 可重組的多頻多功能天線
WO2002071541A1 (en) Multiband antenna arrangement for radio communications apparatus
CN100525124C (zh) 便携式无线电设备
US20230344128A1 (en) Antenna assembly and electronic device
EP0817312A2 (en) Antenna apparatus
US9819077B1 (en) Multi-feed antenna optimized for non-50 Ohm operation
KR100905340B1 (ko) 안테나 장치 및 이를 포함하는 무선 통신 장치
CN115313037A (zh) 一种天线组件及电子设备
KR20020087139A (ko) 무선 단말기
CN219040740U (zh) 一种天线组件和终端设备
RU2438232C2 (ru) Устройство для обеспечения использования общего фидера двумя элементами
CN117955444A (zh) 具有扩展调谐范围的负载调制射频放大器
JP2009118417A (ja) 携帯無線機

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090422

Termination date: 20180521

CF01 Termination of patent right due to non-payment of annual fee