Dual-polarization receiver

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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Details

C375S346000, C398S065000

Reexamination Certificate

active

07742549

ABSTRACT:
A dual-polarization receiver for receiving polarized wave signals whose directions are different from each other has receiving demodulation units of a working system and a backup system for one of the polarized wave signals, and receiving demodulation units of a working system and a backup system for the other of the polarized wave signals. RF local oscillation circuits of frequency converting circuits of the working system are connected with a common REF oscillation circuit and RF local oscillation circuits of frequency converting circuits of the backup system are connected with a common REF oscillation circuit.

REFERENCES:
patent: 4879711 (1989-11-01), Rosen
patent: 4926422 (1990-05-01), Alaria et al.
patent: 2002/0061752 (2002-05-01), Kurokami
patent: 2006/0274320 (2006-12-01), Caplan
patent: 64-51839 (1989-02-01), None
patent: 03-30044 (1991-02-01), None
patent: 6-232787 (1994-08-01), None
patent: 09-204240 (1997-08-01), None
patent: 2682514 (1997-08-01), None
patent: 3044633 (2000-03-01), None
patent: 2002-158630 (2002-05-01), None
patent: 2004-172975 (2004-06-01), None

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