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:
Mar. 21, 1989
Filed:
Mar. 11, 1988
Applicant:
Inventors:
William G Sterns, Los Angeles, CA (US);
Ching-Fai Cho, Tujunga, CA (US);
Assignee:
ITT Gilfillan, a division of ITT Corporation, Van Nuys, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ; H01P / ; H01P / ;
U.S. Cl.
CPC ...
343756 ; 333111 ; 333115 ;
Abstract
The variable directional coupler of the subject invention employs 3, 4 or n branches in TEM transmission media, such as coax, stripline and microstrip. Precise control of the coupling is acheived by a variable susceptance connected near the mid-point of the crossover.
Quick Actions:
Sterns, William. (1989). Variable directional coupler (U.S. Patent No. 4814780). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4814780
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile