Radar apparatus

Details Radar apparatus Radar apparatus

1998-02-20

1999-08-17

Tarcza, Thomas H.

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

Directive

Including a steerable array

342 81, 342154, 342374, H01Q 322, H01Q 324, H01Q 326

Patent

active

059400293

ABSTRACT:
An array antenna radar apparatus has a single front end shared by a plurality of antennas, a first switch for cyclically connecting the antennas to the front end at a prescribed switching frequency, and a second switch for cyclically connecting the output of the front end to frequency converters corresponding to the antennas. The frequency converters frequency-convert intermediate-frequency signals of the respective antennas output by the front end to baseband signals at the switching frequency. Phase shifters and amplitude adjusting units apply a phase shift or amplitude adjustment to the outputs of the frequency converters and combine the resulting signals, thereby making it possible to detect a target in a desired direction.

REFERENCES:
patent: 4017860 (1977-04-01), Earp
patent: 4924235 (1990-05-01), Fujisaka et al.
patent: 5400037 (1995-03-01), East
patent: 5657026 (1997-08-01), Culpepper et al.
patent: 5684451 (1997-11-01), Newman et al.

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