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:
Jan. 19, 1999
Filed:
Aug. 27, 1996
Philippe Charas, Upplands Vasby, SE;
Telefonaktiebolaget LM Ericsson, Stockholm, SE;
Abstract
An improved feed-forward multi carrier power amplifier architecture is described along with a novel array antenna wherein the improved amplifier may be advantageously put to use. The improved amplifier provides for independent control of unwanted intermodulation products generated in the amplifier. When used in the novel array structure, a separate radiation lobe containing the unwanted intermodulation products may be steered independently from a main radiation lobe. In a cellular base station application, the radiation lobe containing the unwanted intermodulation products may be steered away from the main radiation lobe thereby providing spatial filtering of the unwanted signals. The radiation lobe containing the unwanted intermodulation products may be steered rapidly in time using, for example, a noise like function to provide statistical averaging of the interference in the direction of desired communications.