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. 16, 2024
Filed:
Mar. 08, 2019
Kongsberg Defence & Aerospace As, Kongsberg, NO;
Bjørn Holst Pettersen, Oslo, NO;
Stig Rooth, Asker, NO;
Kongsberg Defence & Aerospace AS, Kongsberg, NO;
Abstract
The present invention relates to a filter correction unit (a) as well as an RF filter including the correction unit for use in radio frequency transmission lines including a band pass filter () having input and output interfaces mounted in the signal transmission line. The filter () is chosen so as to transmit signals within a predetermined frequency range, the quality factor of the filter having predetermined limitations generating a known distortion to the signal. The correction unit (a) has a first bus connected to said transmission line and to said filter, wherein the correction unit comprises at least one surface acoustic wave (SAW) transducer (a-n), each transducer having two electrodes on a piezoelectric substrate where a first electrode is connected to said first bus and the other electrode connected to a second bus, the SAW transducer being adapted to distort a transmitted signal with a factor being the inverse of said known distortion of the filter ().