Switchable directional coupler for use with RF devices
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United States of America Patent
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Jun 9, 2009
Grant Date -
Jan 11, 2007
app pub date -
Jul 11, 2005
filing date -
Dec 23, 2004
priority date (Note) -
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Abstract
The embodiments of the present invention provide a directional coupler switchable between a normal state and a bypass state. In one embodiment, the directional coupler comprises shunt switches for switching between the normal state and the bypass state, and first and second transmission lines each extending between first and second ends, wherein the shunt switches comprises a first switch coupled to the first end of the first transmission line, a second switch coupled to the first end of the first transmission line, and a third switch coupled between the second end of the first transmission line and the second end of the second transmission line.
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