Telecommunications – Transmitter – Measuring – testing – or monitoring of transmitter
Patent
1980-12-22
1983-07-05
Chin, Tommy P.
Telecommunications
Transmitter
Measuring, testing, or monitoring of transmitter
455116, 455117, 330207R, H04B 7005
Patent
active
043922457
ABSTRACT:
A radio transmitter has an output power control circuit including a power amplifier, a directional coupler coupled to the power amplifier, a detector of the forward power of the directional coupler, a generator of a difference voltage between the output voltage of the detector means and a reference voltage. A power regulator varys the output power of the power amplifier in response to the output of the difference voltage. The power applied from the power amplifier through the directional coupler to the detector is controlled by a control signal.
The control circuit electrically varies the coupling coefficient of the directional coupler for attenuating the power applied from the directional coupler to the detector means to extend the controllable range of the transmitter output power.
REFERENCES:
patent: 3641451 (1972-02-01), Hollingsworth
patent: 3662290 (1972-05-01), Elliott
patent: 3715690 (1973-02-01), Young
patent: 3866136 (1975-02-01), Augustin
patent: 4013961 (1977-03-01), Colebourn
patent: 4044308 (1977-08-01), Stites
patent: 4165493 (1979-08-01), Harrington
Tait Electronics Ltd. Service Manual "T 196 Miniphone", UHF Frequency Modulated Radio Telephone.
Chin Tommy P.
Nippon Electric Co. Ltd.
LandOfFree
Radio transmitter having an output power control circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radio transmitter having an output power control circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio transmitter having an output power control circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1443635