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:
Dec. 20, 2016
Filed:
Feb. 16, 2015
Anritsu Corporation, Atsugi-shi, Kanagawa, JP;
Takashi Kawamura, Kanagawa, JP;
Hiroshi Shimotahira, Kanagawa, JP;
ANRITUS CORPORATION, Atsugi-Shi, JP;
Abstract
In a millimeter waveband filter, electric wave half mirrors are provided in transmission lines of a first waveguide configured to allow electromagnetic waves in a predetermined frequency range of a millimeter waveband to propagate in a TE10 mode and a second waveguide connected to the first waveguide in a state where one end of the second waveguide is inserted into the first waveguide, and the waveguides are relatively moved to vary the interval between the electric wave half mirrors, thereby changing a resonance frequency. The first waveguide is a square waveguide, and the second waveguide is a ridge waveguide in which the outside thereof is a rectangular shape at a predetermined interval with respect to the inside of the first waveguide and a sectional shape of a transmission line has a central portion having a height smaller than both side portions.