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. 24, 1987
Filed:
Oct. 01, 1985
Applicant:
Inventor:
Yoshihiko Baba, Noda, JP;
Assignee:
Uniden Corporation, Ichikawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ;
U.S. Cl.
CPC ...
455226 ; 455228 ; 455315 ; 342 20 ;
Abstract
A band determining method in which radar signals of first and second frequency bands are received in the upper- and lower-heterodyne reception modes, using a local oscillation signal modulated with a low frequency signal, thus causing the phase relationship between the detected signal and the modulating signal to indicate which band signals are received.