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:
Jul. 03, 1979
Filed:
Feb. 10, 1977
Applicant:
Inventor:
Philippe H Cluzel, Six-Fours-Les-Plages, FR;
Assignee:
Etat Francais, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
340-9 ; 340 10 ;
Abstract
An acoustic antenna comprises a support, an acoustic reflector supported by the support and a plurality of acoustic/electrical transducers arranged forwardly of said acoustic reflector to cooperate with the reflector. The acoustic/electrical transducers are arranged at different distances from the reflector thus to be operative at different acoustic frequencies. The transducers are provided with sensitivity compensation means for rendering the transducers less sensitive the further the distance of the transducers from the reflector. The signals of the transducers are combined to render the band width of the antenna relatively wide.