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. 08, 1996
Filed:
Feb. 03, 1995
Applicant:
Inventors:
John F Flood, Plantation, FL (US);
Richard C Havens, Plantation, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
342385 ; 331 53 ;
Abstract
A portable emergency position indicating radio beacon (EPIRB) that transmits two signals at different frequencies whereby one frequency is twice the frequency of the other and wherein the beacon incorporates a push-push frequency multiplier to multiply the generated signal and to cancel odd and higher order even harmonics in the multiplied signal so as to improve efficiency, decrease power dissipation, improve the circuit quality factor, and decrease wave distortion. The improved frequency doubling circuitry allows for an EPIRB of reduced housing volumetric size and reduced battery size without reducing signal output power.