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:
Jun. 02, 1998
Filed:
Oct. 08, 1996
Tatsuya Nagatsu, Osaka, JP;
Yoshikazu Yoshimura, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
On a terminal end plane of a circular waveguide, metal columnar blocks and a cross shaped branching transforming unit for branching two orthogonal linear polarized waves and transforming from circular TE.sub.11 mode to rectangular TE.sub.10 mode are disposed, and two rectangular waveguides are composed so as to form an angle of 45 degrees to the vertical axis and horizontal axis, that is, symmetrically to the axial center of the circular waveguide, in an electric field direction of the first linear polarized wave and an electric field direction of the second linear polarized wave. In this constitution, the orthogonal polarized wave branching filter of the microwave band for satellite communications can be reduced in size, and moreover the principal components can be formed integrally by an injection molding process.