MMIC FET mixer and method

Details MMIC FET mixer and method MMIC FET mixer and method

1994-06-20

1996-05-14

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455313, 455323, 455326, 327113, 327355, H04B 128

Patent

active

055176887

ABSTRACT:
A MMIC FET mixer and method includes a RF input port for receiving a RF signal, a feedback control input for receiving a feedback signal, and a LO input port for receiving a LO signal. A feedback controller is coupled to the RF amplifier, the feedback controller for producing a controlled RF signal in response to the feedback signal. A constant current source is coupled to the feedback controller, to the RF amplifier and to the LO input port. The constant current source receives a DC offset voltage, the controlled RF signal, and the LO signal and produces an IF output signal at an IF output port. The IF output signal is proportional to the DC offset voltage, to the RF signal, and to the LO signal.

REFERENCES:
patent: 3600605 (1971-08-01), Lehmann
patent: 4541122 (1985-09-01), Kimura
patent: 4727597 (1988-02-01), Dautriche
patent: 4814649 (1989-03-01), Young
patent: 5339459 (1994-08-01), Schiltz et al.

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