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:
Nov. 09, 1982
Filed:
May. 09, 1980
Raymond Strauch, Viroflay, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention relates to C-W radar responders, having a carrier of some gigahertz whose amplitude is modulated between some dozens and some hundreds of kilohertz. Such a responder comprises means for sampling the signal it receives in such a manner that the sampling theorem is satisfied with respect to the amplitude-modulation frequency. The responder comprises at least an aerial, a radio-frequency amplifier, a delay line, a clock generator, an input, an output and two switches connected to the input and to the output, respectively, of the amplifier. The operating sequence of the switches, controlled by the clock generator, is such that each sample of the received signal passes through the amplifier more than once before it is re-transmitted.