DE4191766T1 - Automatische Dual-Mode-Frequenz-Steuerung - Google Patents
Automatische Dual-Mode-Frequenz-SteuerungInfo
- Publication number
- DE4191766T1 DE4191766T1 DE4191766T DE4191766T DE4191766T1 DE 4191766 T1 DE4191766 T1 DE 4191766T1 DE 4191766 T DE4191766 T DE 4191766T DE 4191766 T DE4191766 T DE 4191766T DE 4191766 T1 DE4191766 T1 DE 4191766T1
- Authority
- DE
- Germany
- Prior art keywords
- frequency control
- dual mode
- mode frequency
- automatic dual
- automatic
- 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.)
- Pending
Links
- 230000009977 dual effect Effects 0.000 title 1
Classifications
-
- 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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0028—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage
- H04B1/0032—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at baseband stage with analogue quadrature frequency conversion to and from the baseband
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
- H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
-
- 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
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
- H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/559,775 US5163159A (en) | 1990-07-30 | 1990-07-30 | Dual mode automatic frequency control |
PCT/US1991/004874 WO1992002991A1 (en) | 1990-07-30 | 1991-07-11 | Dual mode automatic frequency control |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4191766T1 true DE4191766T1 (de) | 1997-07-31 |
Family
ID=24234969
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4191766A Expired - Fee Related DE4191766C2 (de) | 1990-07-30 | 1991-07-11 | Frequenzsteuerschaltkreis für einen einstellbaren Empfänger-Oszillator |
DE4191766T Pending DE4191766T1 (de) | 1990-07-30 | 1991-07-11 | Automatische Dual-Mode-Frequenz-Steuerung |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4191766A Expired - Fee Related DE4191766C2 (de) | 1990-07-30 | 1991-07-11 | Frequenzsteuerschaltkreis für einen einstellbaren Empfänger-Oszillator |
Country Status (10)
Country | Link |
---|---|
US (1) | US5163159A (de) |
JP (1) | JP2621657B2 (de) |
AU (1) | AU655934B2 (de) |
CA (1) | CA2066420C (de) |
DE (2) | DE4191766C2 (de) |
FR (1) | FR2665991A1 (de) |
GB (1) | GB2253751B (de) |
HK (1) | HK25797A (de) |
MX (1) | MX9100427A (de) |
WO (1) | WO1992002991A1 (de) |
Families Citing this family (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2773524B2 (ja) * | 1992-02-29 | 1998-07-09 | 日本電気株式会社 | ディジタル移動無線受信機 |
IL102051A (en) * | 1992-05-29 | 1996-05-14 | Tadiran Ltd | Vehicle location unit |
JP3241098B2 (ja) * | 1992-06-12 | 2001-12-25 | 株式会社東芝 | 多方式対応の受信装置 |
EP0792030B1 (de) * | 1992-06-29 | 2002-03-20 | Motorola, Inc. | Zweimodenempfänger mit Batterieschonungsmöglichkeit |
FI102798B1 (fi) * | 1992-07-28 | 1999-02-15 | Nokia Mobile Phones Ltd | Digitaalisen matkapuhelimen radiotaajuusosan piirijärjestely |
US5418818A (en) * | 1992-09-22 | 1995-05-23 | Glenayre Electronics, Inc. | Digital signal processor exciter |
US5867537A (en) * | 1992-10-27 | 1999-02-02 | Ericsson Inc. | Balanced tranversal I,Q filters for quadrature modulators |
US5530722A (en) * | 1992-10-27 | 1996-06-25 | Ericsson Ge Mobile Communications Inc. | Quadrature modulator with integrated distributed RC filters |
US5745523A (en) * | 1992-10-27 | 1998-04-28 | Ericsson Inc. | Multi-mode signal processing |
US5727023A (en) * | 1992-10-27 | 1998-03-10 | Ericsson Inc. | Apparatus for and method of speech digitizing |
US5483686A (en) * | 1992-11-02 | 1996-01-09 | Matsushita Electric Industrial Co., Ltd. | Channel selecting apparatus for simultaneous use with both phase-continuous modulation signals and digital modulation signals |
CA2154180C (en) * | 1993-02-17 | 1999-04-06 | Alan L. Wilson | Multiple-modulation communication system |
US5392460A (en) * | 1993-04-23 | 1995-02-21 | Nokia Mobile Phones Ltd. | Dual mode radiotelephone terminal selectively operable for frequency modulated or phase modulated operation |
CA2127190A1 (en) * | 1993-08-06 | 1995-02-07 | Stephen Vincent Cahill | Apparatus and method for automatically controlling a reference frequency in a dual mode receiver |
JPH07154439A (ja) * | 1993-11-26 | 1995-06-16 | Nec Eng Ltd | 復調装置 |
DE4341435A1 (de) * | 1993-12-04 | 1995-06-08 | Bosch Gmbh Robert | Funkgerät |
US5701589A (en) * | 1994-05-20 | 1997-12-23 | Motorola, Inc. | Method for adjusting reference frequencies in a communication system |
US5519887A (en) * | 1994-08-09 | 1996-05-21 | At&T Corp. | Switchable filter phase-locked loop frequency synthesizer device and method for achieving dual-mode cellular communications |
JPH08204763A (ja) * | 1994-11-21 | 1996-08-09 | Sony Corp | 送信機及び送受信機 |
TW294867B (de) * | 1994-12-23 | 1997-01-01 | Qualcomm Inc | |
US5774195A (en) * | 1995-01-24 | 1998-06-30 | Kabushiki Kaisha Toshiba | Broadcasting system discriminating television receiver for differentiating between analog and digital telecast signals |
US5825833A (en) * | 1995-01-31 | 1998-10-20 | Mitsumi Electric Co., Ltd. | Digital and analog reception apparatus |
GB9505522D0 (en) * | 1995-03-18 | 1995-05-03 | Gen Electric Co Plc | Commodity consumption registering meters |
US6006108A (en) * | 1996-01-31 | 1999-12-21 | Qualcomm Incorporated | Digital audio processing in a dual-mode telephone |
GB2310342A (en) | 1996-02-16 | 1997-08-20 | Northern Telecom Ltd | Dual mode radio transceiver front end |
US6026129A (en) | 1996-03-27 | 2000-02-15 | Matsushita Electric Industrial Co., Ltd. | Radio receiving apparatus for receiving communication signals of different bandwidths |
GB2314981A (en) * | 1996-07-02 | 1998-01-14 | Plessey Semiconductors Ltd | Radio receiver arrangements |
US6546044B1 (en) * | 1996-10-11 | 2003-04-08 | Ericsson Inc. | Dual-mode radiotelephone apparatus for digital or analog modulation |
SE519263C2 (sv) * | 1996-12-02 | 2003-02-04 | Ericsson Telefon Ab L M | Anordning för sändning på flera frekvenser i ett radiokommunikationssystem |
US6154204A (en) * | 1998-01-21 | 2000-11-28 | Evolve Products, Inc. | Tap antenna unit |
DK0945990T3 (da) * | 1998-03-14 | 2006-01-16 | Siemens Ag | Multibåndsreceiver til multibåndsradiosignaler og multibåndsmobiltelefon omfattende en receiver |
US5982823A (en) * | 1998-03-17 | 1999-11-09 | Northrop Grumman Corp | Direct frequency selection and down-conversion for digital receivers |
KR100274089B1 (ko) * | 1998-09-02 | 2000-12-15 | 윤종용 | 듀얼모드 단말기의 자동주파수 제어회로 및 방법 |
JP3551235B2 (ja) * | 1999-06-25 | 2004-08-04 | 日本電気株式会社 | Afc回路 |
JP3576880B2 (ja) * | 1999-09-09 | 2004-10-13 | 日本電気株式会社 | 自動変調方式識別装置及び自動変調方式識別方法 |
US6799062B1 (en) | 2000-10-19 | 2004-09-28 | Motorola Inc. | Full-duplex hands-free transparency circuit and method therefor |
GB2380877B (en) * | 2001-09-27 | 2003-09-03 | Maryland Semiconductor Corp | Image reject receiver |
US6741840B2 (en) * | 2002-03-13 | 2004-05-25 | Motorola, Inc. | RF transmitters with saturation detection and correction and methods therefor |
ITMI20041599A1 (it) * | 2004-08-03 | 2004-11-03 | Prod El S P A | Metodo e apparecchiatura per comunicazioni radio con moduklazione analogica e digitale |
CN115276800B (zh) * | 2022-07-28 | 2023-07-25 | 徐州智谷光频产业研究院有限公司 | 基于数字信号与模拟信号混合调制解调的可见光通信系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4355401A (en) * | 1979-09-28 | 1982-10-19 | Nippon Electric Co., Ltd. | Radio transmitter/receiver for digital and analog communications system |
US4677690A (en) * | 1982-01-25 | 1987-06-30 | International Telephone And Telegraph Corporation | Baseband demodulator for FM and/or AM signals |
US4893094A (en) * | 1989-03-13 | 1990-01-09 | Motorola, Inc. | Frequency synthesizer with control of start-up battery saving operations |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4335401A (en) * | 1980-08-28 | 1982-06-15 | Rca Corporation | Rapid correlation of recorded information |
US4704734A (en) * | 1986-02-18 | 1987-11-03 | Motorola, Inc. | Method and apparatus for signal strength measurement and antenna selection in cellular radiotelephone systems |
US4852086A (en) * | 1986-10-31 | 1989-07-25 | Motorola, Inc. | SSB communication system with FM data capability |
WO1988003342A1 (en) * | 1986-10-31 | 1988-05-05 | Motorola, Inc. | Ssb communiction system with fm data capability |
-
1990
- 1990-07-30 US US07/559,775 patent/US5163159A/en not_active Expired - Lifetime
-
1991
- 1991-07-11 DE DE4191766A patent/DE4191766C2/de not_active Expired - Fee Related
- 1991-07-11 DE DE4191766T patent/DE4191766T1/de active Pending
- 1991-07-11 JP JP3514258A patent/JP2621657B2/ja not_active Expired - Lifetime
- 1991-07-11 WO PCT/US1991/004874 patent/WO1992002991A1/en active Application Filing
- 1991-07-11 CA CA002066420A patent/CA2066420C/en not_active Expired - Fee Related
- 1991-07-11 AU AU83950/91A patent/AU655934B2/en not_active Ceased
- 1991-07-30 MX MX9100427A patent/MX9100427A/es not_active IP Right Cessation
- 1991-07-30 FR FR9109678A patent/FR2665991A1/fr active Granted
-
1992
- 1992-03-30 GB GB9207025A patent/GB2253751B/en not_active Expired - Fee Related
-
1997
- 1997-03-06 HK HK25797A patent/HK25797A/xx not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4355401A (en) * | 1979-09-28 | 1982-10-19 | Nippon Electric Co., Ltd. | Radio transmitter/receiver for digital and analog communications system |
US4677690A (en) * | 1982-01-25 | 1987-06-30 | International Telephone And Telegraph Corporation | Baseband demodulator for FM and/or AM signals |
US4893094A (en) * | 1989-03-13 | 1990-01-09 | Motorola, Inc. | Frequency synthesizer with control of start-up battery saving operations |
Also Published As
Publication number | Publication date |
---|---|
JP2621657B2 (ja) | 1997-06-18 |
WO1992002991A1 (en) | 1992-02-20 |
GB9207025D0 (en) | 1992-05-27 |
FR2665991A1 (fr) | 1992-02-21 |
DE4191766C2 (de) | 1999-08-19 |
JPH05502152A (ja) | 1993-04-15 |
US5163159A (en) | 1992-11-10 |
FR2665991B1 (de) | 1995-03-31 |
CA2066420A1 (en) | 1992-01-31 |
AU8395091A (en) | 1992-03-02 |
CA2066420C (en) | 1996-10-22 |
MX9100427A (es) | 1992-02-28 |
HK25797A (en) | 1997-03-06 |
GB2253751A (en) | 1992-09-16 |
AU655934B2 (en) | 1995-01-19 |
GB2253751B (en) | 1994-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE4191766T1 (de) | Automatische Dual-Mode-Frequenz-Steuerung | |
DE69118940T2 (de) | Selbsttätige Frequenzsteuerschaltung | |
DE4498261T1 (de) | Automatische Frequenzregelvorrichtung | |
DE69120766T2 (de) | Vorschaltgetriebesteuerung | |
DE68916952D1 (de) | Selbsttätige Frequenz-Steuerschaltung. | |
DE69222093D1 (de) | Selbsttätige automatische Frequenzsteuerschaltung | |
DE68903855D1 (de) | Automatische frequenzabstimmungsschaltung. | |
DE69127893D1 (de) | Zählergesteuerte verschlussregelschaltung | |
GB2253314B (en) | Dual mode automatic gain control | |
DE69128652D1 (de) | Steuerschaltung | |
DE3852441T2 (de) | Automatisches Frequenzregelssystem. | |
DE69118864D1 (de) | Mikrowellenschaltung | |
DE69120052D1 (de) | Mikrowellenschaltung | |
DE69121935T2 (de) | Kochplattencontrol | |
KR910007892U (ko) | 자동 주파수 제어회로 | |
DE69119255T2 (de) | Magnetrone | |
DE9018177U1 (de) | Automatische Tür | |
KR920002942U (ko) | 전자 레인지 | |
BR7000627U (pt) | Chanfrador-rebarbador automatico | |
KR890015253U (ko) | 자동주파수 제어회로 | |
KR940002637U (ko) | 커텐자동 개폐장치 | |
KR930024959U (ko) | 커튼 자동 개폐장치 | |
KR920015730U (ko) | 마그네트론 | |
KR920015731U (ko) | 마그네트론 | |
KR920000302U (ko) | 자동식기 세척기 |