Invention Grant
US09154289B2 Electrical balance duplexer for co-existence and concurrent operation of more than one wireless transceivers 有权
电气平衡双工器,用于多个无线收发器的共存和并发操作

Electrical balance duplexer for co-existence and concurrent operation of more than one wireless transceivers
Abstract:
A circuit for a common electrical balance duplexer (EBD) of a multi-path transceiver may include an EBD circuit. The EBD circuit may be coupled to output nodes of two or more transmit (TX) paths, one or more antennas, and input nodes of two or more receive (RX) paths. The EBD circuit may be configured to isolate the TX paths from the RX paths, and to provide low-loss signal paths between the output nodes of the transmit (TX) paths and one or more antennas. One or more balancing networks may be coupled to the EBD circuit to provide one or more impedances, each matching a corresponding impedance associated with one of the antennas. The output nodes of the transmit (TX) paths may include output nodes of a first and a second power amplifier (PA). The first and the second PA may share a matching transformer that is merged with the EBD circuit.
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