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. 22, 2005
Filed:
Oct. 01, 2001
George G. Chadwick, Menlo Park, CA (US);
George G. Chadwick, Menlo Park, CA (US);
Cocomo MB Communications, Inc., Tokyo, JP;
Abstract
An exciter system () is provided for use in facilitating electromagnetic communication within an enclosed space (). The system () includes an exciter () which may be in the form of a three dimensional hemispherical exciter () or a two dimensional planar sector exciter () depending on the size of the associated structure and the power requirements of operation. The exciter system () operates in conjunction with a hub/controller network (). The exciter system () is adapted to induce a quasi-static evanescent field () within the space and to thereby enable communications using the evanescent field () at frequencies within an operational frequency range determined by the characteristics of the space. The exciter () is mounted in opposition to a portion of a conductive framework () within the enclosed space, and is separated therefrom. In operation, a coaxial connector () connects the exciter () to the hub/controller network () with the center conductor () connecting at a feed point () to the exciter () while the shield conductor () is connected to the opposing conductive framework (). In some embodiments a post () acts as a curtain to enhance performance at lower frequencies.