Patent ID: 9154289
Filing Date: 2015-10-06
Classification: H03H,H04B,H04L

Abstract:
1. A circuit for a common electrical balance duplexer (EBD) of a multi-path transceiver, the circuit comprising: an EBD circuit coupled to output nodes of at least two transmit (TX) paths, at least one antenna, and input nodes of at least two receive (RX) paths, the EBD circuit being configured to isolate the at least two TX paths from the at least two RX paths, and to provide a low-loss signal path between an output node of the at least two TX path and a corresponding antenna of the at least one antenna; and at least one balancing network coupled to the EBD circuit and configured to provide at least one impedance, each of the at least one impedances to match a corresponding one of one or more impedances associated with the at least one antenna, wherein, the output nodes of the at least two TX paths comprise output nodes of a differential TX path comprising output nodes of a first and a second power amplifier (PA), and wherein the first and the second PA are arranged to share a matching transformer that is merged with the EBD circuit.