Radio-frequency amplifier circuitry with improved transmit and receive performance
US12348192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Oct 23, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45481
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Wireless circuitry can have an antenna connected to a transmitting amplifier and a receiving amplifier. The wireless circuitry may be operable in a transmit mode during which only the transmitting amplifier is active and in a receive mode during which only the receiving amplifier is active. The transmitting amplifier may be connected to the antenna via a balun and a radio-frequency coupler without an intervening switch that is enabled during the transmit mode and disabled during the receive mode. The transmitting amplifier may include input transistors, cascode transistors, first switches configured to selectively decouple gate terminals of the cascode transistors from a bias voltage, output capacitors, and second switches configured to selectively decouple the output capacitors from a ground line. The first and second switches are turned on during the transmit mode and are turned off during the receive mode to increase an output impedance of the transmitting amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.