High frequency switch
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United States of America Patent
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Oct 15, 2013
Grant Date -
Jul 7, 2011
app pub date -
Sep 28, 2009
filing date -
Sep 30, 2008
priority date (Note) -
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Abstract
Provided is a high frequency switch wherein first switch circuits, each of which includes a first PIN diode, are connected in parallel to one or more first λ/4 signal transmitting paths which transmit transmitting signals, and second switch circuits, each of which includes a second PIN diode, are connected in parallel to one or more second λ/4 signal transmitting paths which transmit receiving signals to a receiving terminal. A first control voltage is applied to the cathode of the first PIN diode, and a second control voltage is applied to the cathode of the second PIN diode. Furthermore, a biasing circuit which applies a constant bias voltage is connected to each anode of the first PIN diode and the second PIN diode.
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