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. 20, 1984
Filed:
Mar. 07, 1983
Applicant:
Inventor:
Koji Iwahashi, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ;
U.S. Cl.
CPC ...
455213 ; 455307 ; 455312 ;
Abstract
A receiver utilizing a switched capacitor filter is disclosed. The switched capacitor filter has a band pass determined by a control signal applied thereto. A waveform shaping circuit generates the control signal as a function of a received signal which has been modulated in angle and amplified. The wave shaper generates the control signal only when the amplified signal is above a predetermined value and generates the signal at a frequency which causes the switched capacitor filter to operate at the correct band pass.