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. 15, 1985
Filed:
May. 16, 1983
Joseph F Lutz, San Jose, CA (US);
Other;
Abstract
A frequency demodulation system for wideband FM is responsive to an incoming wideband frequency modulated signal to derive therefrom a demodulated output signal. The system includes a delay line having an input to which the incoming signal is applied and having an output at which a delayed incoming signal appears. The system also includes a differential amplifier having a first input to which the incoming signal is applied and a second input coupled to the delay line to receive the delayed signal. The amplifier performs direct vector addition of the incoming signal and delayed signal to produce at the output of the amplifier an amplitude modulated and frequency modulated signal which is the direct vector sum of the incoming signal and the delayed signal as amplified. The system also includes an envelope detector coupled at its input to the output of the amplifier and responsive to the amplifier output signal to produce at the detector output the demodulated signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile