Current-stacked DX switch with high rf isolation

Details Current-stacked DX switch with high rf isolation Current-stacked DX switch with high rf isolation

1997-03-19

1999-04-27

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

4552491, H04B 106

Patent

active

058989110

ABSTRACT:
An rf receiver front end that includes a switchable attenuation circuit or DX switch and uses a power saving technique. The switchable attenuation circuit is dc connected in series with one or more rf circuits so that power drawn from a constant voltage power supply is reduced. The rf circuit may include an rf mixer, a low-noise amplifier, or both.

REFERENCES:
patent: 4236126 (1980-11-01), Weller et al.
patent: 4646036 (1987-02-01), Brown
patent: 4817198 (1989-03-01), Rinderle
patent: 5280643 (1994-01-01), Ishii
patent: 5638141 (1997-06-01), Bae et al.

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