The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 12, 1994
Filed:
Nov. 06, 1991
Oscar Dayani, Atlanta, GA (US);
Mitsubishi Consumer Electronics America, Inc., Braselton, GA (US);
Abstract
A system for controlling the power level of RF signals output by a portable radio transmitter having a first voltage supply, a first amplifier stage and a microcomputer coupled to the first amplifier stage for selecting one of a set of power levels. An indicator signals when the radio transmitter is coupled to a vehicular voltage supply and, in response, the microcomputer generates a control signal representative of a desired power level. A second amplifier stage is coupled to the first amplifier stage and receives RF signals at the selected power level. A constant gain control circuit coupled to the second amplifier stage receives the control signal and responds by setting the gain of the second amplifier stage at one of at least two constant gain values so that the output RF signals are provided with the desired power level.