Broadband harmonic matching network
US10122336B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2017 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/534
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier circuit includes an RF amplifier that is configured to amplify an RF signal between a first terminal and a second terminal across an RF frequency range. The amplifier circuit includes a multi-stage impedance matching network having a broadband impedance transformer, a phase shifter, and a high-pass impedance transformer connected in series with one another between a first port of the amplifier circuit and the first terminal. The broadband impedance transformer provides impedance transformation in the RF frequency range. The phase shifter shifts a phase output port reflection coefficient in a second order harmonic frequency range that overlaps with a second order harmonic of the fundamental RF frequency. The high-pass impedance transformer transmits an RF signal in the RF frequency range while providing impedance transformation in the RF frequency range and transmits RF signals in the second order harmonic frequency range with low impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.