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:
Feb. 23, 1999
Filed:
Oct. 21, 1996
Patrick J Knowles, Severn, MD (US);
Timothy G Waterman, Eldersburg, MD (US);
Other;
Abstract
A tilted helical element antenna array has increased effective aperture. By tilting individual helical radiators relative to one another, the region of aperture overlap may be decreased to thereby increase the effective aperture of the array. Helical radiators are disposed at a radiator spacing which is less than the operating wavelength .lambda.. At such a small spacing, the apertures of each of the helical radiators overlap. To decrease this aperture overlap region and thereby increase the effective aperture of the array, each of the helical radiators are tilted relative to one another. Thus, a compact antenna having an increased effective aperture is provided.