Reducing stray capacitance in antenna element switching
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United States of America Patent
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Apr 13, 2010
Issued Date -
N/A
app pub date -
Apr 30, 2007
filing date -
Aug 18, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An antenna array may include an antenna element configured to receive an RF signal. A PIN diode may selectively couple the antenna element to an RF source. Biasing the PIN diode may cancel the received RF signal at a stub coupled to the diode thereby reducing stray capacitance of the PIN diode. A method for switching antenna elements is also disclosed. A PIN diode coupled to an antenna element is biased thereby reflecting the received RF signal out-of-phase within a stub such that the signal is canceling and stray capacitance of the PIN diode is reduced.
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