Mixer
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United States of America Patent
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Dec 11, 1990
Issued Date -
N/A
app pub date -
Dec 12, 1989
filing date -
Sep 18, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A mixer incorporating FET's (4,5) as the switching elements includes a resonant circuit connected as a tank circuit of the local oscillator (6) such that the inherence capacitance of the FET's is automatically compensated for. The harmonic recovery technique is also used by the inclusion of rejection filters at the input and output of the system, which rejection filters have reciprocal impedance characteristics, such as short circuit/open circuit or the like.
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