Radio transmitting apparatus and gain control method for the sam

Details Radio transmitting apparatus and gain control method for the sam Radio transmitting apparatus and gain control method for the sam

1998-03-19

2000-09-12

Urban, Edward F.

Telecommunications

Transmitter

Amplitude modulation

455126, 375298, 375300, H03C 152, H04L 2736

Patent

active

061189871

ABSTRACT:
Gain control is performed on an input signal to an orthogonal modulator used in a radio transmitting apparatus in such a manner that the level of the input signal falls within the proper operation range of the orthogonal modulator. At the time of amplifying and outputting the output of the orthogonal modulator, gain control is executed with the reciprocal of a control gain for the input signal to the orthogonal modulator. Accordingly, the input to the orthogonal modulator of an adaptive array antenna can be compensated within the proper range to ensure the proper operation of the orthogonal modulator.

REFERENCES:
patent: 4199723 (1980-04-01), Cummings et al.
patent: 5396256 (1995-03-01), Chiba et al.
patent: 5473333 (1995-12-01), Chiba et al.
patent: 5835488 (1998-11-01), Sugita
patent: 5862460 (1999-01-01), Rich

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