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:
May. 01, 1990
Filed:
Jan. 13, 1989
Yung L Chow, Waterloo, CA;
Abstract
A log-periodic slot antenna has adjacent radiating elements connected by off-center co-planar lines thereby providing the required phase reversal and modifying the element impedance to match that of the co-planar line. By providing a ground plane restricted in size to that of the element array a difference pattern can be formed by the single antenna giving a sharp null in the longitudinal direction of the antenna. A dual log-periodic antenna formed from two such single antennas can be fed in-phase and produce two difference patterns one in the co-planar plane and one in the cross-polar plane.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile