Tunable filter with harmonic rejection
US11909428B2 · kind B2 · utility
2Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2021 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Dec 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Aspects of this disclosure relate to a tunable filter with harmonic rejection. The tunable filter includes mutually coupled inductors and a tunable capacitance circuit electrically connected to at least one of the mutually coupled inductors. The tunable capacitance circuit includes N switches configured to adjust effective capacitance of the tunable capacitance circuit to tune harmonic rejection of the tunable filter for at least 2×2N harmonics. The tunable filter can filter a radio frequency signal. Related methods, radio frequency systems, radio frequency modules, and wireless communication devices are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.