Millimeter waveband filter

Patent metadata

Field	Value
Publication number	US-9525199-B2
Application number	US-201514623015-A
Country	US
Kind code	B2
Filing date	Feb 16, 2015
Priority date	Mar 14, 2014
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

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.

First claim

What is claimed is:

1. A millimeter waveband filter comprising:
a first waveguide;
a second waveguide, the second waveguide being connected to the first waveguide in a state where one end of the second waveguide is inserted into the first waveguide to constitute a transmission line allowing electromagnetic waves in a predetermined frequency range of a millimeter waveband to propagate in a TE10 mode;
a pair of flat electric wave half mirrors which have characteristics to transm…

Assignees

• Anritsu Corp
• Anritus Corp

Inventors

• Kawamura Takashi
• Shimotahira Hiroshi

Classifications

• H01P1/208 Primary

  Electricity · mapped topic

• H01P5/024

  Electricity · mapped topic