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:
May. 13, 2014
Filed:
Sep. 21, 2009
Dmitry Tatarnikov, Moscow, RU;
Anton Stepanenko, Dedovsk, RU;
Andrey Astakhov, Moscow, RU;
Vladimir Philippov, Moscow, RU;
Dmitry Tatarnikov, Moscow, RU;
Anton Stepanenko, Dedovsk, RU;
Andrey Astakhov, Moscow, RU;
Vladimir Philippov, Moscow, RU;
Topcon GPS, LLC, Paramus, NJ (US);
Abstract
Disclosed is a circularly-polarized antenna comprising a flat conducting ground plane, a radiator, and an excitation system disposed between the radiator and the ground plane. The radiator comprises a plurality of conducting segments separated from each other by a first dielectric medium and separated from the ground plane by a second dielectric medium. The plurality of conducting segments are symmetrically disposed about an antenna axis of symmetry orthogonal to the ground plane. The excitation system comprises a flat conducting exciter patch and four excitation sources with phase differences of 0, 90, 180, and 270 degrees. The excitation sources are generated on two orthogonal printed circuit boards.