Transmitter circuit
US5029298A · kind A · utility
25Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A transmitter circuit useful for example, in a portable radio-telephone comprises a power amplifying circuit which includes a driving amplifier constituted by a Si-MOSFET element and a power amplifier constituted by a GaAs-FET element. The gate voltage control is performed simultaneously for the driving amplifier and the power amplifier. By virtue of this mixed arrangement, a transmitting power amplifying circuit having a high power conversion efficiency is realized inexpensively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.