Cascaded low pass/high pass filter phase shifter system
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United States of America Patent
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Jan 9, 1990
Issued Date -
N/A
app pub date -
Sep 26, 1988
filing date -
Jul 18, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A cascaded low pass/high pass filter phase shifter system including: a series of semiconductor switches each having a control electrode and first and second load electrodes; a capacitance connected in series between each control electrode and ground; an inductance connected in series between each second load electrode of one semiconductor switch and the first load electrode of the adjacent semiconductor switch in the series; and means for selectively applying a control signal to each said control electrode for switching the associated semiconductor switch between a first state in which it operates as a low pass filter and a second state in which it operates as a high pass filter to introduce a phase shift in a propagated signal.
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