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:
Sep. 23, 1986
Filed:
Mar. 27, 1985
Takuji Harada, Hiratsuka, JP;
Harada Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A transmission channel coupler for an antenna including a first resonator and a second resonator. Each resonator has a helical conductor and an outer conductor which is disposed outside of the helical conductor by sharing the same axis with the helical conductor. One end of the helical conductor is electrically connected to the inner wall of the outer conductor, and the other end of the helical conductor is positioned within the area defined by an end face of the outer conductor. The first and second resonators are coaxially mounted on the either side of a glass such as rear window of a car, window of a building, etc. By means of the structure above, high frequency signals are transmitted through an insulating material, that is, the glass, without damaging it. Also, the coupler can be manufactured small in size and provides excellent frequency characteristics with less transmission loss.