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:
Jun. 15, 2004
Filed:
Dec. 09, 2002
Applicant:
Inventor:
Steven Richard Ring, Bristol, GB;
Assignee:
Andrew Corporation, Orland Park, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 1/26 ;
U.S. Cl.
CPC ...
H03F 1/26 ;
Abstract
Phase shifting network ( ) predistorts the input to non-linear amplifier ( ) to counteract AM-PM distortion. The input signal is sampled at ( ) and its amplitude is detected at ( ). The amplitude signal is then used to index a lookup table ( ) which contains corresponding data for controlling the phase shifting network ( ). The input signal may be digital and the phase shifting process may be implemented in the digital domain.