Phased array antenna system

Details Phased array antenna system Phased array antenna system

2006-05-16

2008-09-09

Phan, Dao L (Department: 3662)

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

Directive

Utilizing correlation techniques

C342S372000, C342S375000

Reexamination Certificate

active

07423588

ABSTRACT:
The present antenna system includes a phased array antenna system comprising a limiting circuit, an isolation circuit, and a phasing circuit. The limiting circuit includes a system of fast signal diodes coupled with a zener diode, which provides sharp limiting and increased limiting thresholds to received signals. In addition, the isolation circuit prevents a cable coupled to the output of the antenna unit from becoming electrically coupled with the antenna element itself. Furthermore, the phasing circuit allows the present antenna system to provide a null in a fixed direction over a wide bandwidth of signal receiving frequencies.

REFERENCES:
patent: 3192525 (1965-06-01), Morgan et al.
patent: 3275950 (1966-09-01), Birr
patent: 5266869 (1993-11-01), Usami

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