H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/110
H04B 1/26 (2006.01) H03J 7/06 (2006.01)
Patent
CA 1277373
TWEET ELIMINATION, OR REDUCTION, IN SUPERHETERODYNE RECEIVERS FIELD OF THE INVENTION ABSTRACT In a superheterodyne receiver which employs a frequency synthesizer to generate local oscillator (LO) frequencies, there is provided apparatus which determines when an undesirable frequency relation exists, which may produce a condition known as a "tweet", and which adjusts the frequency of the LO signal so as to prevent, reduce or eliminate the tweet.
565880
Hazeltine Corporation
Johnson Douglas S. Q.c.
Loughlin Bernard D.
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