Apparatus and method of DC offset correction for a receiver

Details Apparatus and method of DC offset correction for a receiver Apparatus and method of DC offset correction for a receiver

1990-12-20

1993-05-18

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

455312, 455338, H04B 116

Patent

active

052128261

ABSTRACT:
The present disclosure includes a discussion of a radio receiver. The radio receiver has at least two operational states and includes a variable gain amplifier and at least two adaptive DC offset compensators (421, 427) to suppress undesired DC offset. The first operational state of the radio receiver (121) adjusts the adaptive DC offset compensator circuits (421, 427) to appropriate output levels in absence of an input signal to the radio (121). The second operational state receives the input signal through the radio receiver (121) and eliminates the undesired DC offset (309) from the received input signal with the adaptive DC offset compensator circuits (421, 427) and allows the received input signals to be processed.

REFERENCES:
patent: 3846710 (1974-11-01), Chapman
patent: 4564821 (1986-01-01), Reichart
patent: 4742514 (1988-05-01), Goode et al.
patent: 4829592 (1989-05-01), Wieschhoff et al.
patent: 4829594 (1989-05-01), Heck et al.
patent: 5003621 (1991-03-01), Gailus

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