Title:
フェーズドアレイレーダ用回路モジュール
Document Type and Number:
Japanese Patent JP3787159
Kind Code:
B2
Abstract:
PCT No. PCT/GB95/01607 Sec. 371 Date Dec. 10, 1997 Sec. 102(e) Date Dec. 10, 1997 PCT Filed Jul. 7, 1995 PCT Pub. No. WO97/03367 PCT Pub. Date Jan. 30, 1997A circuit module for a phased array radar (10) incorporates radar frequency (RF) mixers (54a, 54b) connected to an RF splitter/combiner (52) and to in-phase and quadrature RF reference signals. The RF mixers (54a, 54b) are also connected to intermediate frequency (IF) processing circuitry (60 to 68) providing for phase control of RF signals and IF reference signals. In transmission mode, the RF mixer (54a, 54b) receive phase-controlled, digitally synthesised IF signals from clock-activated generators (68a, 68b). Their outputs are combined at the RF splitter/combiner (52) to provide single sideband upconversion of the phase-controlled IF signals. In reception mode, the RF splitter/combiner (52) and the RF mixers (54a, 54b) act as an image rejection mixer circuit in which the phase-controlled IF signals are local oscillator signals. Beamforming is carried out by computer control of the IF phase together with, in the case of reception, analogue or digital summation of output signals from an array of modules (12).
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Inventors:
Dean, michael
Application Number:
JP50557397A
Publication Date:
June 21, 2006
Filing Date:
July 07, 1995
Export Citation:
Assignee:
Kinetic Limited
International Classes:
G01S7/02; G01S7/03; G01S7/28; G01S7/40; H01Q21/00; G01S7/282; G01S7/288; G01S13/02
Domestic Patent References:
| JP2119302A | ||||
| JP3234128A | ||||
| JP2193088A | ||||
| JP7235830A | ||||
| JP7502120A | ||||
| JP5191128A | ||||
| JP2152305A | ||||
| JP63284484A |
Foreign References:
| US5019793 |
Other References:
L.M.Devlin、他1名,“A versatile vector modulator design for MMIC”,Microwave Symposium Digest, 1990., IEEE MTT-S International, 1990年,vol.1, p.519-522
Attorney, Agent or Firm:
Yoshio Kawaguchi
Mitsuru Inoue
Akio Ichiiri
Katsuma Osaki
Takamasa Soma
Mitsuru Inoue
Akio Ichiiri
Katsuma Osaki
Takamasa Soma