WO2001067547A3 - System and method providing delays for avoiding nulls - Google Patents

System and method providing delays for avoiding nulls Download PDF

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Publication number
WO2001067547A3
WO2001067547A3 PCT/US2001/007186 US0107186W WO0167547A3 WO 2001067547 A3 WO2001067547 A3 WO 2001067547A3 US 0107186 W US0107186 W US 0107186W WO 0167547 A3 WO0167547 A3 WO 0167547A3
Authority
WO
WIPO (PCT)
Prior art keywords
delays
sector
signals
phase
utilized
Prior art date
Application number
PCT/US2001/007186
Other languages
French (fr)
Other versions
WO2001067547A2 (en
Inventor
Martin J Feuerstein
J Todd Elson
Original Assignee
Metawave Comm Corp
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
Application filed by Metawave Comm Corp filed Critical Metawave Comm Corp
Priority to AU2001240071A priority Critical patent/AU2001240071A1/en
Publication of WO2001067547A2 publication Critical patent/WO2001067547A2/en
Publication of WO2001067547A3 publication Critical patent/WO2001067547A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2682—Time delay steered arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • H01Q21/293—Combinations of different interacting antenna units for giving a desired directional characteristic one unit or more being an array of identical aerial elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns

Abstract

A system and method are disclosed for avoiding nulls in a composite radiation pattern synthesized from a plurality of antenna beams. The disclosed invention teaches the use of delays in the signal paths associated with ones of the antenna beams utilized to synthesize the desired radiation pattern in order to avoid destructive combining of the signals. In a preferred embodiment, delays are introduced in each antenna beam signal having a common attribute such as a common phase center. Accordingly, a minimum number of phase differential boundaries are introduced in order that certain communications, such as CDMA, are not adversely affected. Adaptive arrays may be utilized to form radiation patterns, for which the azimuthal width and/or length of a sector may be adjusted by way of adjustments of the relative amplitude and phase of signal components of signals at antennas of a phased array adaptively controlled according to communication parameters such as information indicating the quality of the communication channel on that sector or the number of calls serviced in particular sectors.
PCT/US2001/007186 2000-03-07 2001-03-06 System and method providing delays for avoiding nulls WO2001067547A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001240071A AU2001240071A1 (en) 2000-03-07 2001-03-06 System and method providing delays for cdma nulling

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51998700A 2000-03-07 2000-03-07
US09/519,987 2000-03-07

Publications (2)

Publication Number Publication Date
WO2001067547A2 WO2001067547A2 (en) 2001-09-13
WO2001067547A3 true WO2001067547A3 (en) 2002-01-03

Family

ID=24070715

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/007186 WO2001067547A2 (en) 2000-03-07 2001-03-06 System and method providing delays for avoiding nulls

Country Status (2)

Country Link
AU (1) AU2001240071A1 (en)
WO (1) WO2001067547A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7142830B2 (en) 2001-09-19 2006-11-28 Nokia Corporation Adaptive transceiver system
EP1428328A1 (en) * 2001-09-19 2004-06-16 Nokia Corporation Adaptive transceiver system
GB2467772B (en) * 2009-02-13 2012-05-02 Socowave Technologies Ltd Communication system, network element and method for antenna array calibration
CN102354798A (en) * 2011-08-17 2012-02-15 华南理工大学 Magnetically controlled beam variable plasma antenna array

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237706A (en) * 1989-11-03 1991-05-08 Racal Res Ltd Radio communications link with diversity
US5423059A (en) * 1993-07-29 1995-06-06 Motorola Inc. Method for enhancing signal quality in a simulcast communication system
WO1995022210A2 (en) * 1994-02-14 1995-08-17 Qualcomm Incorporated Dynamic sectorization in a spread spectrum communication system
US5648968A (en) * 1995-06-08 1997-07-15 Metawave Communications Corporation Narrow beam antenna systems with angular diversity
US5649287A (en) * 1995-03-29 1997-07-15 Telefonaktiebolaget Lm Ericsson Orthogonalizing methods for antenna pattern nullfilling
US6178333B1 (en) * 1998-04-15 2001-01-23 Metawave Communications Corporation System and method providing delays for CDMA nulling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2237706A (en) * 1989-11-03 1991-05-08 Racal Res Ltd Radio communications link with diversity
US5423059A (en) * 1993-07-29 1995-06-06 Motorola Inc. Method for enhancing signal quality in a simulcast communication system
WO1995022210A2 (en) * 1994-02-14 1995-08-17 Qualcomm Incorporated Dynamic sectorization in a spread spectrum communication system
US5649287A (en) * 1995-03-29 1997-07-15 Telefonaktiebolaget Lm Ericsson Orthogonalizing methods for antenna pattern nullfilling
US5648968A (en) * 1995-06-08 1997-07-15 Metawave Communications Corporation Narrow beam antenna systems with angular diversity
US6178333B1 (en) * 1998-04-15 2001-01-23 Metawave Communications Corporation System and method providing delays for CDMA nulling

Also Published As

Publication number Publication date
WO2001067547A2 (en) 2001-09-13
AU2001240071A1 (en) 2001-09-17

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