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. 22, 1990
Filed:
Jun. 14, 1989
Peter Pfabe, Hamburg, DE;
Hubert Nohren, Hamburg, DE;
Autoflug GmbH, Rellingen, DE;
Abstract
In a staggered arrangement of individual elements that are made of conductive material and are spaced from one another, and which serve to improve the reflectivity of objects which are to be detected by radar with a search frequency band, there exists the problem that due to the insufficient dimensioning of the spacing of the individual elements, and the thus caused passage of radar beams or the only point-like reflection, an insufficient reflectivity of the object is provided. To resolve this problem, the individual elements are spaced from one another starting at one half of the wavelength corresponding to the lower cutoff frequency of the selected frequency band, and increasing, pursuant to a geometric progression, to one half of the wavelength corresponding to the upper cutoff frequency of the frequency band.