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. 14, 1980
Filed:
Jun. 05, 1978
Applicant:
Inventors:
James Williamson, Franklin, MA (US);
Paul G Crete, Chelmsford, MA (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
343 / ; 331 10 ; 331 14 ; 331 18 ;
Abstract
An improved automatic frequency control arrangement for a missile-borne inverse receiver is shown to include a reference oscillator and a voltage-controlled oscillator with control means for the latter, such means including a frequency-to-voltage converter responsive to the difference frequency between the two oscillators so that the latter may produce a signal representative of the Doppler shift frequency of a target. A starting circuit is also shown to ensure that the frequency of the reference oscillator is always lower than the frequency of the voltage-controlled oscillator.