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. 11, 2006
Filed:
Nov. 25, 2002
Andrew Gordon Summers, Cambridge, GB;
Trahern Stuart Rayner, Bucks, GB;
Andrew Gordon Summers, Cambridge, GB;
Trahern Stuart Rayner, Bucks, GB;
Ttpcom Limited, Royston Hertfordshire, GB;
Abstract
An electronic system for accurately controlling the RF output power from a power amplifier () is implemented using a multiplier () which multiplies the output power by itself to provide a DC component which is fed to a variable gain amplifier () which provides a controlling signal via a comparator () and an integrator () to the power amplifier. The transfer function between controlling signal and output power is substantially linear, even during dynamic variation of the controlling signal. The system is capable of a large dynamic range, and exhibits constant control loop bandwidth over this range. This is of particular use to TDMA applications with a large dynamic range of levelled output powers because a fixed filter function can be used to shape the transmitted burst.