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:
Mar. 16, 2004
Filed:
Dec. 14, 2001
Makoto Shigihara, Fukushima-ken, JP;
Masahiko Higasa, Fukushima-ken, JP;
Alps Electric Co., Ltd., , JP;
Abstract
In a circularly polarized wave antenna, a dielectric member, which is formed of a dielectric material, such as ceramic, is formed in a quadrilateral columnar shape. A through-hole formed in a quadrilateral shape when viewed from above is provided at the center of the dielectric member. Radiation conductors having the same configuration are formed according to, for example, a printing technique, and are disposed on the corresponding four side surfaces of the dielectric member while being tilted at 45°. In the circularly polarized wave antenna, the dielectric member is fixed on a printed circuit board, and the bottom portions of the radiation conductors are soldered to the corresponding portions of the printed circuit board. With this configuration, mutually in-phase power is supplied to the four radiation conductors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile