Radio transceiver including transmitter power control circuit
US5832374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1996 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Nov 1, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to a radio transceiver having a high-frequency output stage and a control circuit for controlling the transmitter power, in which the control circuit is supplied with an actual voltage in the form of a signal derived from the transmit signal. Especially in handheld radios the environment of the antenna is affected by the position of the unit, so that antenna mismatches constantly occur. This can disturb the proper operation of state-of-the-art power control circuits. To avoid such interference, the invention proposed to supply as an actual value to the control circuit a signal which is tapped prior to the signal being supplied to the high-frequency power amplifier output stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.