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:
Dec. 03, 1985
Filed:
Sep. 30, 1983
Walter E Buehler, Issaquah, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
An antenna, suitable for being deployed from an aircraft or other vehicle and characterized by broadband, omnidirectional radiation/reception is provided by a coaxial transmission feed line that is terminated by an electrically conductive ball that is electrically and mechanically connected to an extension of the center conductor of the coaxial line, and by a telescopically adjustable sleeve choke having the end adjacent the ball conductor, electrically bonded to the outer conductor of the coaxial line. The choke is adjusted in length to form a matched counterpoise to the ball radiator. The diameter of the ball, the gap length corresponding to the length of the inner conductor between the ball and the terminus of the outer conductor of the line, as well as the length of the sleeve choke, are selected so that the diameter of the ball is greater than one-quarter of the midband wavelength and less than five eighths of the midband wavelength, the gap length between the ball radiator and the terminus of the outer coaxial conductor is less than one-eighth of the midband wavelength, and the choke length is approximately equal to the midband wavelength.