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:
Feb. 18, 2003
Filed:
Mar. 31, 2000
Hitoshi Hayashi, Kanagawa, JP;
Abstract
A phase shifter includes first and second high-frequency impedance elements and first and second high-frequency phase shifting elements. The first high-frequency impedance element is connected between an input port and an output port and has an impedance substantially constituted by a reactance. The first high-frequency phase shifting element has one terminal connected to the input port and a phase change amount of 90° at a frequency f . The second high-frequency phase shifting element is connected between the output port and the other terminal of the first high-frequency phase shifting element and has a phase change amount of 90° at the frequency f . The first and second high-frequency phase shifting elements have an impedance converting function. The second high-frequency impedance element has one terminal connected to a common connection point between the first and second high-frequency phase shifting elements, the other terminal grounded, and an impedance substantially constituted by a reactance. The impedance of the first high-frequency impedance element and the impedance of the second high-frequency impedance element are set such that input and output reflection coefficients at the frequency f are approximately zero.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile