Su, Han and Szczepkowski, Grzegorz and Farrell, Ronan
(2014)
TX Leakage Cancellation with Adaptive Delay
Filter.
In: 17th Research Colloquium on Communications and Radio Science into the 21st Century, 30th April - 1st May 2014, Royal Irish Academy, Academy House, 19 Dawson Street, Dublin 2.
Abstract
In an Frequency-Division Duplexing (FDD)
transceiver, a high power transmitted signal can leak into the
RX chain due to limited isolation of a duplexer. Such signal is
known as TX leakage and can seriously affect the performance
of the receiver. A transmitter leakage canceller structure is
proposed in this paper in order to improve isolation between
the transmitter and receiver. The simulations show the proposed
structure increases the isolation of a Surface Acoustic Wave
(SAW) duplexer by more than 25 dB in 20 MHz bandwidth
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