Active harmonic filters for integrated radio frequency power amplifiers
US10097216B2 · kind B2 · utility
11Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Dec 6, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0408
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency front end circuit includes an output signal transmission line, an amplifier circuit with an input connected to a radio frequency signal source and an output connected to the output signal transmission line. A harmonic suppression circuit is connected to the amplifier circuit, and includes an active circuit element having a frequency-dependent impedance and is tuned as a reflective trap with a negative capacitance for one or more rejection frequency ranges each corresponding to a multiple of a fundamental frequency of a signal generated by the radio frequency signal source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.