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. 08, 2011
Filed:
Mar. 06, 2009
Akihisa Fujita, Anjo, JP;
Akihisa Fujita, Anjo, JP;
Denso Corporation, Kariya, JP;
Abstract
Long-side length ato aof rectangular waveguide tubes in a long-side direction (magnetic field direction) become greater, the shorter a line length is (the closer a rectangular waveguide tube is to the center). ai and Li are set such that line lengths Lto Lof each rectangular waveguide tube is Li=mλgi (i=1 to 5, and m is a positive integer number), with guide wavelengths of each rectangular waveguide tube, determined by the length ato a, as λgto λg. Hence, the line length Li of each rectangular waveguide tube can be arbitrarily set, while maintaining a phase relationship between high frequency signals transmitted by each rectangular waveguide tube. When a difference in line lengths between rectangular waveguide tubes is set to be shorter, the degree of freedom in arrangement of the rectangular waveguide tubes can be improved while suppressing the degradation of propagation characteristics caused by temperature change.