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. 13, 1990
Filed:
Aug. 11, 1989
Applicant:
Inventor:
Murray J Niman, Chelmsford, GB;
Assignee:
Marconi Electronic Devices Limited, Middlesex, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ; H01Q / ; H01Q / ; H01P / ;
U.S. Cl.
CPC ...
342374 ; 333237 ; 333248 ; 343771 ;
Abstract
Waveguide apparatus in which a dielectric substrate is placed between sections of a waveguide. The dielectric substrate incorporates slots arranged in a linear fashion and having extended portions, there being a narrow gap between adjacent slots. This enables accurate control of radiation losses through the dielectric layer sandwiched between the sections of the waveguide to be achieved.