Duplexer-less transceiver and communication apparatus
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsHenrik Sjöland, Stefan Andersson, Tobias Tired, Johan Wernehag
Life of this patent
Estimating the term…
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.
Claims16
A duplexer-less transceiver arrangement comprising:
- a receiver arranged for frequency-division duplex communication with a communication network;
- a transmitter arranged for frequency-division duplex communication with the communication network;
- an antenna port for connecting to an antenna;
- a balancing impedance circuit arranged to provide an adaptive impedance arranged to mimic the impedance at the antenna port;
- and
- an impedance network comprising impedances and connections differentially connecting the antenna port to the receiver, differentially connecting the antenna port to the transmitter, differentially connecting the balancing impedance circuit to the receiver, and differentially connecting the balancing circuit to the transmitter, and wherein the impedance network cross-connects the transmitter to the antenna port and the balancing impedance circuit, and cross-connects the receiver to the antenna port and the balancing impedance circuit, to cancel or at least reduce transmitter-signal contribution at the receiver.
Dependencies are inferred from the claim text.