Phased array radar antenna system

Details Phased array radar antenna system Phased array radar antenna system

1985-02-26

1988-06-07

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

H01Q 322

Patent

active

047499958

ABSTRACT:
An electronically steerable phased array radar antenna system for transmitting and receiving broadband linear FM signals is detailed. The antenna comprises a plurality of subarrays, each of which are connected by circulator means to a transmit-receive module. The highly linearized FM waveform is fed to the transmit-receive module, and a CW waveform is fed to a phase shifter in the module. The phase shifter applies a frequency offset to the CW waveform which is then added to the linear FM wideband signal for each antenna subarray. This frequency offset serves a beam steering function and can be considered a synthetic time delay.

REFERENCES:
patent: 3517389 (1970-06-01), Dausin
patent: 4123719 (1978-10-01), Hopwood et al.
patent: 4160958 (1979-06-01), Mims et al.
patent: 4160975 (1979-07-01), Steudel
patent: 4217587 (1980-08-01), Jacomini
patent: 4263600 (1981-04-01), Williams et al.
"The Series 320 Radar Family", by R. Rosien; Eascon '80 Conference Record, pp. 182-189.

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