Radio frequency communication systems with interference cancellation for coexistence
US11742890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2022 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Aug 25, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/1461
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Radio frequency (RF) communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter including a power amplifier that amplifies an RF transmit signal to generate an amplified RF transmit signal, a receiver including a low noise amplifier (LNA) that amplifies an RF receive signal, and an interference cancellation circuit. The interference cancellation circuit includes a filter that generates an analog interference cancellation signal based on filtering the amplified radio frequency transmit signal, a controllable phase circuit that provides a phase adjustment to the analog interference cancellation signal, and a controllable gain circuit that provides a gain adjustment to the analog interference cancellation signal. The interference cancellation circuit injects the analog interference cancellation signal into the LNA to compensate the receiver for interference arising from the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.