Millimeter-wave multiplexers
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United States of America Patent
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Feb 20, 1990
Grant Date -
N/A
app pub date -
Mar 29, 1988
filing date -
Mar 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A planar millimeter wave circuit for splitting a very wide input frequencyand into three or more lesser bands utilizes bandpass filters exclusively. A triplexer is made by connecting the bandpass filters with coupled line equivalents fed by a conductor with a characteristic impedance the same as the input conductor to the filters and of an appropriate length so as to make the diplexer appear open or nearly open circuited over the adjacent frequency range of a third bandpass filter used in the triplexer or, alternatively, over the adjacent frequency range of a second diplexer connected so as to form a quadruplexer.
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