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. 05, 1990
Filed:
Nov. 03, 1988
Applicant:
Inventors:
James E Olivenbaum, Houston, TX (US);
Mark C Fischer, Pasadena, TX (US);
Assignee:
Tideland Signal Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01Q / ;
U.S. Cl.
CPC ...
36457104 ; 36457103 ; 342173 ;
Abstract
An improved side lobe suppression circuit in a racon for determining frequency band edge. As the temperature varies, a temperature frequency calibration table receives a temperature measurement and determines which frequencies are out of band as the temperature varies. A microprocessor changes the threshold values in a ram in response to temperature changes to suppress out of band frequencies but to allow the transmission of in band frequencies above a predetermined threshold.