Reconfigurable electrical balance duplexer (EBD) supporting frequency division duplex (FDD) and time division duplex (TDD)
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United States of America Patent
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Jul 14, 2020
Grant Date -
Apr 2, 2020
app pub date -
Sep 28, 2018
filing date -
Sep 28, 2018
priority date (Note) -
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Abstract
Systems, methods, and devices for operating in either frequency division duplexing (FDD) or time division duplexing (TDD) for wireless communications using the same electrical balance duplexer (EBD) circuitry in a transceiver device are provided. A series of switches may selectively couple components of the EBD, such as a low noise amplifier (LNA), a power amplifier (PA), and balancing impedance, to ground based on selected operation mode (e.g., FDD or TDD) while reducing insertion loss of the receiver (RX) and transmitter (TX) signals. Tuned matching network blocks for the LNA and PA may be used in addition to the series of switches to provide impedance matching for additional reduction of insertion loss.
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