Invention Grant
- Patent Title: Electrical balance duplexer for co-existence and concurrent operation of more than one wireless transceivers
- Patent Title (中): 电气平衡双工器,用于多个无线收发器的共存和并发操作
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Application No.: US13688053Application Date: 2012-11-28
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Publication No.: US09154289B2Publication Date: 2015-10-06
- Inventor: Mohyee Mikhemar , Hooman Darabi
- Applicant: BROADCOM CORPORATION
- Applicant Address: US CA Irvine
- Assignee: BROADCOM CORPORATION
- Current Assignee: BROADCOM CORPORATION
- Current Assignee Address: US CA Irvine
- Agency: McDermott Will & Emery LLP
- Main IPC: H04B1/44
- IPC: H04B1/44 ; H04L5/14 ; H04B1/52 ; H03H7/46

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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