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Title:
制御可能な電気チルトを有するフェーズドアレイアンテナシステム
Document Type and Number:
Japanese Patent JP4420928
Kind Code:
B2
Abstract:
A phased array antenna system with controllable electrical tilt generates two signals V 2 a and V 2 b with variable relative delay therebetween. The signals are converted into antenna element drive signals by a power distribution network. The network splits each of the two signals V 2 a and V 2 b into three signal components. Pairs of components of different signals are input respective hybrid coupling devices (hybrids), which provide vector sums and differences of their inputs and act as phase-to-power converters. Their outputs are distributed between further hybrids, which act as power-to-phase converters and provide antenna element drive signals with phase varying both with element array position and also with the variable relative delay between the two signals V 2 a and V 2 b. Antenna electrical tilt is therefore controllable by altering a single relative delay.

Inventors:
Thomas, David David
Haskell, Philip Edward
Application Number:
JP2006537428A
Publication Date:
February 24, 2010
Filing Date:
October 29, 2004
Export Citation:
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Assignee:
Quinter Technology Limited
International Classes:
H01Q3/34; H01Q3/36; H01Q1/00; H01Q1/24; H01Q3/26; H01Q3/30; H01Q3/40; H01Q21/06; H04B7/08; H04B7/10
Domestic Patent References:
JP2006522519A
JP2002084121A
JP2001189624A
Foreign References:
WO2004088790A1
WO2003036756A1
Attorney, Agent or Firm:
Yoshio Kawaguchi
Makoto Ono
Chihiro Watanabe
Kenkyo Kanayama
Katsuma Osaki
Mitsuaki Tsubokura