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:
Oct. 19, 2010
Filed:
Feb. 28, 2008
Stephen L. Kersten, Coral Springs, FL (US);
Ovadia Grossman, Tel Aviv, IL;
Sooliam Ooi, Plantation, FL (US);
Stephen L. Kersten, Coral Springs, FL (US);
Ovadia Grossman, Tel Aviv, IL;
Sooliam Ooi, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A dual band multi-pitch helical antenna () includes a first section () positioned adjacent to the feed point having a widely spaced pitch. A second section () is attached to the first section () having a narrowly spaced pitch. A third section () is attached to the second section () having a widely spaced pitch, while a fourth section () is attached to the third section () having a narrowly spaced pitch. The antenna further includes a parasitic element () that is positioned adjacent to each of the first section (), second section (), third section (), and fourth section () for enhancing broad-band antenna performance. A matching network () is connected between an antenna feed point and the first section () for matching the dual band multi-pitch helical antenna to a predetermined feed point impedance such that the antenna is resonant in at least two frequency bands.