Shielded front end receiver circuit with IF amplifier on an IC

Details Shielded front end receiver circuit with IF amplifier on an IC Shielded front end receiver circuit with IF amplifier on an IC

1989-07-11

1991-09-17

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455333, 357 84, H04B 110, H04B 128

Patent

active

050502387

ABSTRACT:
A semiconductor integrated circuit for a radio comprises: a front end circuit block (1) including at least an oscillation circuit (1b) and a mixing circuit (1c), for converting an RF signal to an IF signal; and an IF amplifying circuit block (2) for amplifying the IF signal and limiting an amplitude thereof, and the front end circuit block (1) is covered with shield electrodes (17, 17a, 17b, 17c) connected to a predetermined potential.

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patent: 4691378 (1987-09-01), Kumamoto et al.

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