Compensated ring mixers
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United States of America Patent
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Dec 29, 1998
Grant Date -
N/A
app pub date -
Apr 11, 1995
filing date -
Apr 11, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compensated mixer including a radio frequency (RF) balun through which RF signals are transferred, and a local oscillator (LO) balun for receiving an LO signal. In an exemplary implementation the mixer further includes a diode ring quad circuit for mixing RF signals received by the RF balun with the LO signal received by the LO balun. During operation the diode ring quad circuit develops, between first and second nodes therein, a capacitive reactance arising from switching at the LO frequency. The mixer further includes a compensation inductor, connected between the first and second nodes, for cancelling the effect of the capacitive reactance at the LO signal frequency.
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