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:
Sep. 23, 1997
Filed:
Oct. 18, 1995
Michinaga Nagura, Kariya, JP;
Tomohisa Kishigami, Oobu, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
An antenna reflector, which can reflect incoming radio waves, is formed as a corner of a cube by orthogonally connecting three reflectors which can reflect incoming radio waves. The reflectors are formed from semiconductor layers, conductive sheets scattered on one surface of the semiconductor layers, insulator films formed on both sides of the semiconductor layers, conductor films provided on the opposite surface of each of the insulator films, and switching elements that are formed on the semiconductor layers and which connect the conductive sheets. As a result, if direct current voltage is applied between the resistor films, the reflectors reflect radio waves while radio waves are absorbed when no direct current voltage is applied, and thus, the reflected radio wave is modulated by the application and non-application of the direct current voltage.