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. 07, 2016
Filed:
Feb. 25, 2015
Applicant:
Wemtec, Inc., Fulton, MD (US);
Inventor:
William E. McKinzie, III, Fulton, MD (US);
Assignee:
WEMTEC, INC., Fulton, MD (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 1/16 (2006.01); H05K 1/02 (2006.01); H01P 1/163 (2006.01); H01P 1/20 (2006.01); H01P 3/08 (2006.01); H01Q 15/02 (2006.01); H05K 1/16 (2006.01);
U.S. Cl.
CPC ...
H01P 1/163 (2013.01); H01P 1/16 (2013.01); H01P 1/20 (2013.01); H01P 1/2005 (2013.01); H01P 3/082 (2013.01); H05K 1/0234 (2013.01); H05K 1/0236 (2013.01); H05K 1/167 (2013.01); Y10T 29/49124 (2015.01);
Abstract
A parallel plate waveguide structure may be configured to suppress spurious propagating modes by including a lossy frequency selective surface (FSS) formed from a resistive film. The electromagnetic material properties of individual layers disposed between the conductive plates of the waveguide may be engineered to extend the suppression band of the fundamental TE mode up to the cutoff frequency of the second TE mode, and to simultaneously create a multi-octave TM mode suppression band. Applications include, for example, cavity mode suppression in microwave and millimeterwave assemblies at the board, package, and chip level.