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:
Jun. 09, 1987
Filed:
Jul. 23, 1974
Applicant:
Inventors:
John T Floyd, Hemel Hempstead, GB;
Christopher D Huggett, St. Albans, GB;
Michael A Jones, Stanmore, GB;
John R Woods, Watford, GB;
Assignee:
The Marconi Company Limited, , GB;
Primary Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331-4 ; 331 25 ; 331D / ; 342103 ;
Abstract
A phase-lock loop system with particular use in radar tracking systems is disclosed. From a number of input signals of varying frequencies such as a carrier frequency and several side band frequencies the system can lock into phase and frequency with the input which has the largest amplitude by sweeping across a predetermined range of frequencies and allowing the phase-lock loop to operate only when a predetermined amplitude is exceeded.