Array antenna receiver device

Details Array antenna receiver device Array antenna receiver device

2007-11-13

2007-11-13

Tarcza, Thomas H. (Department: 3662)

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

Directive

Including a steerable array

C342S374000, C342S174000

Reexamination Certificate

active

10518564

ABSTRACT:
Calibration signals are distributed to the respective output signals of a plurality of antenna elements, thereby multiplexing the distributed calibration signals with the respective signals of the plurality of antenna elements. The calibration signals are extracted from the respective output signals of the multiplexing means and modulated, and the SIR (Signal to Interference Ratio) values of the calibration signals are calculated. The SIR value as calculated by SIR calculating means each calibration period is compared with a SIR threshold value. Only when the SIR value exceeds the SIR threshold value, a demodulated result of the calibration signal is outputted. Further, in each reception branch, the calibration amount of amplitude/phase information is determined based on a reference demodulation result of the branch corresponding to the demodulation result of the branch corresponding to the demodulation result, and a user signal is corrected based on the calibration amount.

REFERENCES:
patent: 2004/0070533 (2004-04-01), Azuma
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patent: 2001-251124 (2001-09-01), None
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patent: 2004-332925 (2001-11-01), None
patent: 2002-135034 (2002-05-01), None
patent: 2003-133837 (2003-05-01), None
patent: WO 02/35648 (2002-05-01), None

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