Radio-frequency transceiver front-end circuit
US10291282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2018 |
| Grant date | May 14, 2019 |
| Priority date | — |
| Expiry date | Aug 6, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An RF transceiver front-end circuit includes an antenna, a first transceiving switch, a reception processing unit, a transmission processing unit and a transmission unit. The reception processing unit includes a low-noise amplifier, a first variable gain amplifier at a back-end circuit of the low-noise amplifier, and a first phase shifter at a back-end circuit of the first variable gain amplifier, wherein a phase of the first variable gain amplifier is constant. The transmission processing unit includes a power amplifier, a second phase shifter at a front-end circuit of the power amplifier, and a second variable gain amplifier at a front-end circuit of the second phase shifter, wherein a phase of the second variable gain amplifier is constant. The transmission unit includes a transmission line and a plurality of passive phase adjustors controlled to change a phase shifting angle of a signal on the transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.