Zero if radio receiver for intermittent operation

Details Zero if radio receiver for intermittent operation Zero if radio receiver for intermittent operation

1990-03-07

1993-11-16

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

4552341, 455324, H04B 106

Patent

active

052631940

ABSTRACT:
A radio receiver for use with a time slot paging system which receives intermittent data includes a direct coupled zero IF receiver circuit with at least one automatic gain control (AGC) amplifier stage. DC offset errors are removed from the AGC amplifier stages by a timed zero adjustment circuit that is switched into the AGC circuit just prior to the receipt of data. The resulting zero IF circuit may be miniaturized in monolithic form making it ideal for use in a wristwatch sized pager.

REFERENCES:
patent: 4476585 (1984-10-01), Reed
patent: 4718113 (1988-01-01), Rother et al.
patent: 4885802 (1989-12-01), Ragan

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