Title: Wireless system
Application Number: 200610059493 Application Date: 2006.03.13
Publication Number: 1835417 Publication Date: 2006.09.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B7/10,H01P1/16,H01P5/16
Applicant(s) Name: Hitachi Int Electric Inc. Address:
Inventor(s) Name: Okubo Yoichi, Sasaki Kanemi
Attorney & Agent: wang yang
Abstract:
     A wireless system for use in a low power data communications in a sub-millimeter wave zone includes at least one wireless communications device including a directional antenna whose cross-polarization discrimination is not less than 24 dB, wherein the wireless system uses a plurality of planes of polarization selectively. The planes of polarization to be used are selected such that the number of non-occupied channels is largest by detecting the number of non-occupied channels depending on planes of polarization. The directional antenna, having a box shape whose front view is a right square, is formed as a single body with the wireless communications device, and the wireless communications device is fixed to a pole in a way that each side of the right square is slanted at 45 DEG with respect to the pole.
Time: 24
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