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:
Mar. 01, 1994
Filed:
Sep. 17, 1992
Jari Muurinen, Pernio, FI;
Nokia Mobile Phones, Ltd., , FI;
Abstract
A power booster (10) comprises a power amplifier (5) and is coupled to a portable radio telephone (20) which transmits an RF signal at one of a predetermined set of power levels. A first detector (6) generates an output signal C indicative of the power of the RF signal received by the booster. The signal C is used to generate a reference signal rf from a look up table (8) in which is stored a set of values corresponding with the respective power levels. The reference signal rf, which indicates the required power level, is applied to a power control circuit (7) which controls the gain of the amplifier (5) to maintain the power output substantially constant at the required power level as determined by the value of the reference signal rf.