Telecommunications – Transmitter – With feedback of modulated output signal
Patent
1995-05-31
1998-01-20
Urban, Edward F.
Telecommunications
Transmitter
With feedback of modulated output signal
455117, H01Q 1112
Patent
active
057109915
ABSTRACT:
An apparatus for controlling the output power of a transmitter installed in a vehicle or used in a mobile radio communication equipment and more particularly to apparatus and method for accurately measuring and controlling over a wide range the output power of a radio frequency to be transmitted. The apparatus has a voltage level adjusting unit for amplifying a voltage of a radio frequency signal to be transmitted in correspondence with a difference between output power set data and measuring output power data to adjust a voltage level of the radio frequency signal to be transmitted; a power amplifying unit for amplifying an output signal delivered from the voltage level adjusting unit; a coupler for sensing a power level outputted from the power amplifying unit; an attenuator for controlling the power level sensed by the coupler in response to an attenuation ratio control signal applied; a high power level measuring unit for generating address data indicating that the radio frequency signal to be transmitted is in a high power level and generating the attenuation ratio control signal indicative of the amount of attenuation thereto, in the case that a maximum value of a power level outputted from the attenuator is larger than a set value; a radio frequency amplifying unit for amplifying the power outputted from the attenuator in response to an amplification ratio control signal.
REFERENCES:
patent: 4485349 (1984-11-01), Siegel
patent: 4709403 (1987-11-01), Kikuchi
patent: 4803440 (1989-02-01), Hotta et al.
patent: 5054116 (1991-10-01), Davidson
patent: 5095542 (1992-03-01), Suematsu
patent: 5124665 (1992-06-01), McGann
patent: 5128629 (1992-07-01), Trinh
patent: 5144258 (1992-09-01), Nakanishi et al.
patent: 5193223 (1993-03-01), Walczak et al.
patent: 5287555 (1994-02-01), Wilson et al.
patent: 5504457 (1996-04-01), Jensen
Armstrong Darnell R.
Bushnell Esq. Robert E.
Samsung Electronics Co,. Ltd.
Urban Edward F.
LandOfFree
Apparatus and method for controlling and measuring output power does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for controlling and measuring output power , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for controlling and measuring output power will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-734218