Phased-array antenna filter and diplexer for a super economical broadcast system
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United States of America Patent
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Jan 1, 2013
Grant Date -
Nov 19, 2009
app pub date -
Apr 21, 2009
filing date -
Apr 21, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A phased-array antenna filter and diplexer for a super economical broadcast system are provided. The filter and diplexer includes a signal divider tee diplexer, a receive filter and a transmit filter. The diplexer includes a tee branch point, an antenna port, a transmit port and a receive port. The receive filter includes a flat, multi-pole bandpass filter, an input port and an output port, where the input port is coupled to the diplexer receive port to define a receive signal path, from the tee branch point to the receive input port, that has a length of approximately one quarter receive wavelength. The transmit filter includes a folded, multi-pole bandpass filter, an input port and an output port, where the output port is coupled to the diplexer transmit port to define a transmit signal path, from the tee branch point to the transmit output port, that has a length of approximately one quarter transmit wavelength.
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