Low voltage gain controlled mixer

Details Low voltage gain controlled mixer Low voltage gain controlled mixer

1997-06-20

1999-08-03

Esenzope, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455323, 455326, 330254, H04B 126, H03F 300

Patent

active

059337710

ABSTRACT:
The functionality of a variable gain controlled amplifier and a tree mixer are combined to provide a variable gain controlled mixer. In constructing the combination, both the current-to-voltage conversion output stage of the mixer, and the voltage-to-current conversion input stage of the variable gain amplifier are removed. Both the variable gain stage and the mixing stage are connected in parallel to modify the input current. Other configurations are provided, including a single balanced mixer, and a folded mixer.

REFERENCES:
patent: 4704738 (1987-11-01), Graziadei et al.
patent: 4931746 (1990-06-01), Trankle et al.
patent: 5233311 (1993-08-01), Chevallier
patent: 5355534 (1994-10-01), Kimura
patent: 5589791 (1996-12-01), Gilbert
patent: 5809410 (1993-07-01), Stuebing et al.
patent: 5874857 (1995-03-01), Roth et al.

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