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:
May. 10, 1994
Filed:
Jun. 03, 1992
Applicant:
Inventors:
Reinhard Popp, Bad Aibling, DE;
Lothar Heichele, Otterfing, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
343909 ;
Abstract
A frequency-selective surface structure for narrow-band filtering of electromagnetic waves, comprising a fully wave-reflective surface perforated by H-shaped slot elements each consisting of end limiting bars and a connecting bar extending transversely with respect to the limiting bars. The end limiting bars of the individual slot elements each have essentially the same length as the connecting bar and have a bar length of approximately one fourth of the operating wave length.