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:
Oct. 29, 1991
Filed:
Nov. 14, 1988
Rudolf Zahn, Markdorf, DE;
Hans W Schroeder, Immenstaad, DE;
Christian Borgwardt, Immenstaad, DE;
Albert Braig, Markdorf, DE;
Gunter Helwig, Daisendorf, DE;
Joachim Boukamp, Markdorf, DE;
Oswald Bender, Friedrichshafen, DE;
Chung-chi Lin, Friedrichshafen, DE;
Werner Scherber, Bermatingen, DE;
Dornier System GmbH, Friedrichshafen, US;
Abstract
A microstrip antenna has an electrically conductive base plate carrying an electrically insulating substrate on top of which are a plurality of radiating patches, the improvement comprises establishing a relatively large spacing between the electrically insulating substrate and the base plate at lateral dimensions larger than lateral dimensions of the patches and in the vicinity of the patches and either through local elevations of the insulating substrate or by local indents in the base plate being vertically aligned with the patches.