Radio frequency front end for a full duplex or half duplex transceiver
AssigneeHuawei Technologies Co., Ltd.
InventorsDror Regev, Doron Ezri, Shimon Shilo
Life of this patent
Estimating the term…
Abstract
A radio frequency (RF) front end for wireless communications, in particular for use in a half duplex (HD) and/or full duplex (FD) transceiver. The RF front end is based on a quadrature balanced power amplifier (QBPA). The RF front end includes an antenna port for outputting a transmit signal to and receiving a receive signal from an antenna, and a receive port for outputting the receive signal to a signal processing section. Further, the QBPA is configured to receive a transmit input signal at a first port, receive a cancellation input signal at a fourth port, and receive the receive signal at a second port coupled to the antenna port.
Claims20
A radio frequency (RF) front end comprising:
- an antenna port configured to:
- output a transmit signal to an antenna;
- and
- receive a receive signal from the antenna;
- a receive port coupled to the antenna port and configured to output the receive signal to a signal processing section;
- and
- a quadrature balanced power amplifier (QBPA) coupled to the antenna port and the receive port and comprising:
- a first port;
- a second port coupled to the antenna port;
- a third port coupled to the receive port;
- and
- a fourth port,
- wherein the QBPA is configured to:
- receive a transmit input signal at the first port;
- receive a cancellation input signal at the fourth port;
- receive the receive signal at the second port;
- generate the transmit signal from the transmit input signal;
- output the transmit signal at the second port;
- generate a cancellation signal from the cancellation input signal;
- and
- output the cancellation signal and the receive signal at the third port.
A transceiver comprising:
- a transmit and receive antenna;
- and
- a radio frequency (RF) front end in communication with the transmit and receive antenna and comprising:
- an antenna port configured to:
- output a transmit signal to the transmit and receive antenna;
- and
- receive a receive signal from the transmit and receive antenna;
- a receive port coupled to the antenna port and configured to output the receive signal to a signal processing section;
- and
- a quadrature balanced power amplifier (QBPA) coupled to the antenna port and the receive port and comprising:
- a first port;
- a second port coupled to the antenna port;
- a third port coupled to the receive port;
- and
- a fourth port,
- wherein the QBPA is configured to:
- receive a transmit input signal at the first port;
- receive a cancellation input signal at the fourth port;
- receive the receive signal at the second port;
- generate the transmit signal from the transmit input signal;
- output the transmit signal at the second port;
- generate a cancellation signal from the cancellation input signal;
- and
- output the cancellation signal and the receive signal at the third port.
A method for performing wireless communication using a radio frequency (RF) front end, the method comprising:
- providing, using an antenna port of the RF front end, a transmit signal to an antenna;
- receiving, from the antenna using the antenna port, a receive signal;
- receiving, using a quadrature balanced power amplifier (QBPA), a transmit input signal at a first port of the QBPA;
- receiving, using the QBPA, a cancellation input signal at a fourth port of the QBPA;
- receiving, using the QBPA, the receive signal at a second port of the QBPA coupled to the antenna port;
- generating, using the QBPA, the transmit signal from the transmit input signal;
- outputting, using the QBPA, the transmit signal at the second port;
- generating, using the QBPA, a cancellation signal from the cancellation input signal;
- outputting, using the QBPA, the cancellation signal and the receive signal at a third port of the QBPA;
- and
- outputting, using the QBPA, the receive signal to a signal processing section using a receive port coupled to the third port.
Dependencies are inferred from the claim text.