Glitch mitigation in switched reactance phase shifters
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United States of America Patent
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Jan 21, 2025
Grant Date -
Jan 21, 2021
app pub date -
Jul 30, 2020
filing date -
Jan 24, 2017
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Abstract
A phase shifter cell and multiple coupled phase shifter cells that mitigate signal glitches arising from phase state changes by a combination of design architecture and control signal timing. Specifically, one or more of the following three concepts are employed to mitigate insertion loss glitches and control phase behavior during phase state transitions: the timing of switching for each switched half-cell (e.g., including series and/or shunt reactance elements, such as inductors and/or capacitors) within a phase shifter cell is controlled in such a way that the reactance elements do not all switch at the same time; use of a “make before break” timing scheme for combination or “multi-state” phase shifter cells; and/or arranging the timing of each phase shifter cell in a set of multiple coupled phase shifter cells such that the individual cells do not all switch at the same time.
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