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:
Jul. 14, 2009
Filed:
Feb. 05, 2004
Tsukasa Yoneyama, Sendai, JP;
Hirokazu Sawada, Sendai, JP;
Tsukasa Yoneyama, Sendai, JP;
Hirokazu Sawada, Sendai, JP;
Intelligent Cosmos Research Institute, Sendai-Shi, JP;
Abstract
An LSE mode, which is a parasitic mode, can be effectively suppressed by a simple structure, and a reduction in size and weight can be thereby facilitated. Further, a metal bodyis arranged in the vicinity of a dielectric waveguideof an NRD guide to suppress the LSE mode, the NRD guide being configured to propagate electromagnetic waves through the dielectric waveguidewhich is sandwiched between parallel conductor plates with a gap of less than a ½ wavelength. This metal bodyhas an arbitrary shape, and may have a discoid shape, an elliptic shape or a prismatic shape. Furthermore, an even distance d is maintained between the metal bodyand the dielectric waveguide, and a phase constant difference can be suppressed by changing this distance d.