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Low-loss TX-to-RX isolation using electrical balance duplexer with noise cancellation
Low-loss TX-to-RX isolation using electrical balance duplexer with noise cancellation
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机译:使用具有噪声消除功能的电平衡双工器实现低损耗TX-to-RX隔离
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摘要
A circuit for a low-loss electrical balance duplexer (EBD) with noise cancellation may include an EBD circuit. The EBD circuit may be coupled to one or more output nodes of a transmit (TX) path, an antenna, and a one or more input nodes of a receive (RX) path. The EBD circuit may be configured to isolate the TX path from the RX path, and to provide low-loss signal paths between the one or more output nodes of the TX path and the antenna. A balancing network may be coupled to the EBD circuit and configured to provide an impedance that matches an impedance associated with the antenna. A noise cancellation circuit may be configured to sense a noise signal generated by the balancing network, and to use the sensed noise signal to improve a signal-to-noise ratio (SNR) of the RX path.
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