Phased array antenna intermodulation suppression beam...

Details Phased array antenna intermodulation suppression beam... Phased array antenna intermodulation suppression beam...

2006-08-29

2006-08-29

Phan, Dao L. (Department: 3662)

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

Directive

Including a steerable array

C342S373000

Reexamination Certificate

active

07098848

ABSTRACT:
An intermodulation suppression method using phased array antenna electronics insignificantly degrades the desired primary main beams while substantially suppressing undesired intermodulation product beams, and particularly undesired third-ordered intermodulation product beams. The beam smearing method has two aspects, including phase smearing and angle smearing for respective subarrays to reduce the intermodulation-product beams of the phased array antenna beam patterns. With a 1 dB degradation of the primary main beams, a 6 dB to 10 dB suppression of the intermodulation product beams is achieved.

REFERENCES:
patent: 3517389 (1970-06-01), Dausin
patent: 4642645 (1987-02-01), Haupt
patent: 6009124 (1999-12-01), Smith et al.
patent: 6246364 (2001-06-01), Rao et al.
patent: 2002/0158801 (2002-10-01), Crilly et al.

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