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. 26, 1990
Filed:
Jun. 21, 1989
Allen F Podell, Palo Alto, CA (US);
Ravi Ramachandran, Sunnyvale, CA (US);
Pacific Monolithics, Sunnyvale, CA (US);
Abstract
A loaded Lange coupler embodied as an integrated circuit includes interdigitated strip conductors and lumped-element capacitors. The two interdigitated strip conductors couple the input and direct ports together, and the isolated and coupled ports together. A capacitor extends between each of the input and coupled ports and the isolated and direct ports. Further, a capacitor extends between each of the midpoints of the strip conductors and ground. This coupler is formed as an integrated circuit in which the current-to-ground capacitors are substantially in line between opposite port pairs and the strip conductors extend around these capacitors.