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:
Oct. 07, 2003
Filed:
Apr. 27, 2001
Applicant:
Inventors:
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/185 ;
U.S. Cl.
CPC ...
H01P 1/185 ;
Abstract
A phase shifter includes a comb-line defined by first and second transmission lines that are electromagnetically coupled with each other and a plurality of variable-capacitance diodes connected to the first and second transmission lines defining the comb-line. In the phase shifter, one end of the first transmission line is connected to an input terminal, one end of the second transmission line is connected to an output terminal, and the variable-capacitance diodes are connected between the other ends of the first and second transmission lines and the corresponding grounds.