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:
Nov. 04, 2003
Filed:
Feb. 26, 2002
Soichi Matsumoto, Tokyo, JP;
Hiroshi Shigesawa, Shiga, JP;
Mikio Tsuji, Kyoto, JP;
Hiroyuki Deguchi, Osaka, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In a horn antenna apparatus for use in an antenna system for radar, some of the excited radio waves in a TE11 mode in a radio-wave input portion are converted to those in a higher mode in a waveguide portion . As the inclination of a line of intersection S of the waveguide portion is not fixed but continuously varied, the higher mode such as a TM11 mode and TE12 mode and the like is excited everywhere in the direction of the axis Z of the waveguide portion . Then the configuration of the line of intersection is determined so that an amplitude and a phase as the generated quantity of higher mode such as the TM11 mode generated in the waveguide portion conform to desired values with respect to each higher mode.