High-frequency power amplifier circuit and high-frequency power amplifier module
US6249186A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3025
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An input matching circuit is provided having the output impedance-frequency characteristics wherein the output impedance shows a value approximately equal to that of the gate input impedance of the FET at the frequency of the objective signal to be amplified, and the output impedance shows a value not more than twice the gate input impedance of the FET at least at the entire frequencies from the frequency of the objective signal to be amplified through twice the frequency of the objective signal to be amplified so that the matching between the input previous stage circuit and the gate of the FET can be secured. Thereby, a high-frequency power amplifier circuit and a high-frequency power amplifier module, which can suppress the occurrence of distortion, perform stably, and get miniaturized, are configured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.