Patent ID: 11909372
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. A transceiver for full duplex or frequency division duplex communications, comprising:
a differential combiner circuit, the differential combiner circuit comprising:
a first port having a first terminal and a second terminal;
a second port having a first terminal and a second terminal;
a third port having a first terminal and a second terminal;
a first sub-circuit comprising:
a first inductor connected between the first terminals of the first and second ports; and
a first capacitor connected between the first terminals of the second and third ports;

a second sub-circuit comprising:
a second inductor connected between the second terminals of the first and second ports; and
a second capacitor connected between the second terminals of the second and third ports;

a third capacitor connected between the first and second terminals of the first port;
a third inductor connected between the first and second terminals of the third port;
a first resistor connected between the first terminal of the first port and the second terminal of the third port; and
a second resistor connected between the second terminal of the first port and the first terminal of the third port;

wherein the second port of the differential combiner circuit serves as an antenna port coupled to an antenna; and
wherein either:
the first port of the differential combiner circuit serves as a receive port coupled to a receiver and the third port of the differential combiner circuit serves as a transmit port coupled to a transmitter; or
the third port of the differential combiner circuit serves as the receive port coupled to the receiver and the first port of the differential combiner circuit serves as the transmit port coupled to the transmitter.