Low pass/high pass filter phase shifter
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United States of America Patent
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-
Oct 16, 1990
Grant Date -
N/A
app pub date -
Jul 18, 1988
filing date -
Jul 18, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A compact low pass/high pass filter phase shifter including a semiconductor switch having a control electrode and first and second load electrodes; a first inductance connected in series with one load electrode and second inductance connected in series with the other load electrode; a third inductance connected in parallel with one load electrode to ground and a fourth inductance connected in parallel with the other load electrode to ground; a capacitance connected in series between the control electrode and ground; and means for applying a control signal to the control electrode for switching the 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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