Multiplexer for sorting multiple signals from an antenna
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United States of America Patent
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May 7, 2002
Issued Date -
N/A
app pub date -
May 9, 2000
filing date -
Aug 7, 1992
priority date (Note) -
Expired
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Abstract
A multiplexer circuit adapted to receive signals comprises two filter circuits. The first filter circuit presents a high impedance to signals outside a first frequency range and the second circuit presents a high impedance to signals outside a second frequency range. Isolation matching circuits enable transmission and reception of one of the signals in the first or second frequency ranges without degradation or interference with the other range. An embodiment allows transmission and reception of satellite Orbcomm frequencies over a standard AM/FM antenna without effect on the AM/FM signal.
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