Optimized RF switching device architecture for impedance control applications
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United States of America Patent
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May 30, 2017
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app pub date -
Sep 30, 2014
filing date -
Oct 4, 2013
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Abstract
A switch architecture having open reflective unselected ports. Signals can be selectively coupled between a common port and at least one selectable port through series connected switches. When one or more port is selected, the remaining ports are opened. In addition, associated “shuntable” switches from each of the selectable ports to ground are always open, regardless of the ON or OFF state of the series switches; thus, there is no normally active connection of the selectable ports to ground, but the presence of the shuntable switches provides electrostatic discharge protection for all ports. Embodiments of the invention allow configurability between a traditional architecture and an open reflective unselected port architecture, and include integrated circuit and field effect transistor embodiments.
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