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:
Jan. 26, 2021
Filed:
Apr. 25, 2019
Applicant:
The United States of America As Represented BY the Secretary of the Navy, Newport, RI (US);
Inventor:
Paul Medeiros, Middleboro, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01Q 1/36 (2006.01); H01Q 21/28 (2006.01); H01Q 11/08 (2006.01);
U.S. Cl.
CPC ...
H01Q 1/362 (2013.01); H01Q 11/08 (2013.01); H01Q 21/28 (2013.01);
Abstract
A top fed, wide band, dual pitch, quadrifilar helix antenna with hemispherical radiation pattern coverage with a reduced back lobe over a wide bandwidth is described wherein one end of the antenna's helix has a high pitch angle that adjoins the other end of the helix with a low pitch angle. The dual pitch angles provide stable radiation patterns and exceptional impedance response to support ultra-high frequency, ultra-high frequency follow-on and mobile user object system circuits. Broadband performance is further aided by providing a radome that dielectrically loads the antenna.