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:
Apr. 10, 2001
Filed:
Aug. 03, 1999
Hideo Nakanishi, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In the antenna unit employed in a radio paging receiver, a helical antenna 1 which is positioned along one side of a circuit substrate 4 on which a receiver circuit 3 is mounted and has a main polarization direction formed by a single body of the helical antenna 1 in the Z-axis direction, and a dipole antenna which has a main polarization direction formed by the helical antenna 1 and the circuit substrate 4 on the Y-axis direction are constructed. The non-directional direction characteristic which has a high antenna gain in all directions in the free space by compensating null points in the directivity mutually with use of the antennas whose main polarization directions are intersected substantially orthogonally.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile