Wideband power amplifiers with harmonic traps
US10673386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D62/8503
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier may include a transistor and input and output matching networks. One or more harmonic trap circuits may be electrically connected to a node located between the input matching network and a gate terminal of the transistor or to a node located between the output matching network and a drain terminal of the transistor. Each harmonic trap may provide a low resistance path to ground for signal energy above a fundamental operating frequency of the amplifier, such as harmonic frequencies thereof. The output matching network may act as an impedance inverter that provides a 90 degree insertion phase between the input of the output matching network and the load. A variable length drain feeder may connect a voltage source to an output of the output matching network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.