Modulation circuit having DC offset level control circuit

Details Modulation circuit having DC offset level control circuit Modulation circuit having DC offset level control circuit

2011-03-22

2011-03-22

Payne, David C (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S295000, C375S296000, C375S316000, C375S340000, C455S091000, C455S114300, C330S149000

Reexamination Certificate

active

07912160

ABSTRACT:
A modulation circuit according to the present invention includes: a modulator modulating a received signal and outputting a modulated signal; a detector circuit receiving the modulated signal and outputting a envelope of the modulated signal; and a first controller regulating an offset level of the modulator based on the envelope.

REFERENCES:
patent: 6693863 (2004-02-01), Shoji et al.
patent: 7599448 (2009-10-01), Ahmed et al.
patent: 2007/0121757 (2007-05-01), Chu et al.
patent: 2 334 187 (1999-08-01), None
patent: 3308811 (2002-05-01), None
patent: 2005-295376 (2005-10-01), None
Chinese Official Action-200710162466.1-Jan. 4, 2011.

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