DC feed network for wideband RF power amplifier
US5272450A · kind A · utility
29Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Jun 20, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/19
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The frequency response of an RF power amplifier in a Cellular Phone Base station is improved by providing a shunt capacitor with the choke coil which interconnects a DC power source to the active device of the amplifier. The cutoff frequency of the bias network can be adjusted so that sum and difference frequencies of multiple-input signals are not attenuated by the feed network thereby permitting the sum and difference frequency signals to be shunted to ground. The linearity and bandwidth of the power amplifier is thus improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.