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. 28, 1986
Filed:
Feb. 16, 1984
Shoji Niki, Saitama, JP;
Takeda Riken Co., Ltd., Tokyo, JP;
Abstract
A signal detector identifies a desired frequency component having the greatest amplitude in an input signal containing other frequency components of smaller amplitude such as spurious noise, etc. This allows measuring for instance the frequency of the desired frequency component. The envelope of an intermediate frequency signal corresponding to the desired frequency component is set to be above a desired level in a single sweep of a local oscillator by comparing the envelope with a predetermined value for controlling the attenuation of the input signal. After the attenuation is thusly set, only the desired frequency component has an envelope larger than the predetermined value, so that the desired frequency component is easily identified thereby in the next sweep.