Duplexer-less transceiver and communication apparatus

US9667404B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Henrik Sjöland · Lund, SE
• Stefan Andersson · Flyinge, SE
• Tobias Tired · Lund, SE
• Johan Wernehag · Malmö, SE

Key dates

• Filing date: May 29, 2013
• Grant date: May 30, 2017
• Expiry date: Jul 17, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L5/1461
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A duplexer-less transceiver arrangement (300) is disclosed. The transceiver comprises a receiver (302) arranged for frequency-division duplex communication with a communication network; a transmitter (304) arranged for frequency-division duplex communication with the communication network; an antenna port (306) for connecting to an antenna; a balancing impedance circuit (308) arranged to provide an adaptive impedance arranged to mimic the impedance at the antenna port; and an impedance network differentially connecting the receiver (302), transmitter (304), antenna port (306) and balancing impedance circuit (308), wherein the impedance network includes a cross-connection.