Input circuits for RF amplifier devices, and methods of manufacture thereof
US9979361B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2016 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A packaged RF amplifier device includes a transistor, a first input circuit, and a second input circuit. The first input circuit includes a first series inductance coupled between an input lead and a first node, a second series inductance coupled between the first node and the transistor's control terminal, and a first shunt capacitance coupled between the first node and a ground reference. The second input circuit includes a first shunt inductance and a second shunt capacitance coupled in series between the input lead and the ground reference. The first input circuit and the second input circuit create a fundamental frequency match for the device. The second series inductance and the first shunt capacitance present a short circuit to the ground reference for RF energy at a second harmonic frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.