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:
Jul. 20, 1976
Filed:
Apr. 14, 1975
Alfred J Cann, Wilton, NH (US);
Sanders Associates, Inc., South Nashua, NH (US);
Abstract
A single configuration-invariant hybrid phasing circuit is utilized for both phase detection and phase shifting in a quasi-coherent memory to produce an essentially constant amplitude CW signal which is later gated to produce constant amplitude false range pulses. In one mode of operation the subject circuit acts as a phase detector to sense the phase difference between a portion of the received signal and the recirculated signal. In the other mode of operation the subject circuit acts as a phase shifter to phase shift the recirculated signal such that this phase difference is less than 45.degree.. This effectively adjusts the loop delay for the wavelength of the incoming signal. Thus, the subject circuit adjusts the phase of the signals in a recirculation loop of the quasi-coherent memory such that no portion of the CW signal formed during the recirculation is out of phase with any other portion by more than 45.degree., to thereby limit amplitude variations in the transmitted pulse level with frequency.