Patent ID: 11936357
Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A Time-Division Duplex (TDD) transceiver comprising:
an antenna;
a transmitter connected to the antenna via a switch;
a receiver;
an integrated isolator circuit for isolating the receiver and the transmitter, the integrated isolator comprising:
a first node, a second node and a third node;
a first capacitor and a first switch connected in series between the first and second nodes;
a first inductor connected between the first and second nodes; and
a second capacitor connected between the second node and the third node; and

a transformer having a primary winding connected between the antenna and the first node of the integrated isolator circuit, wherein the receiver is connected to a secondary winding of the transformer; and
wherein the first switch has an on state and an off state, and an impedance of the integrated isolator circuit at a certain operating frequency depends on the state of the first switch.