Title:
NONCONTACT TYPE HIGH FREQUENCY SIGNAL TRANSMITTER
Document Type and Number:
Japanese Patent JP3475582
Kind Code:
B2
Abstract:
PURPOSE: To provide a noncontact type high frequency signal transmitter capable of obtaining almost fixed transmission characteristics regardless of the positional relation of power feeding points.
CONSTITUTION: Two dielectric substrates 1 constituted by forming metallic foil 2 on one surface, performing connection to the core wire of a coaxial cable present on the other surface by the power feeding point 3, connecting the power feeding point 3 to the external conductor of the coaxial cable through a stub, grounding it and providing a projection part 9 in the outer peripheral part of the metallic foil 2 at a position near the power feeding point 3 are overlapped up and down with a slight clearance, one of the substrate is fixed and the other substrate is made freely rotatable. Then, when the positions of the mutually oppositely arranged power feeding points 3 are in opposite directions, the projection part 9 hardly contributes to coupling. When the mutually oppositely arranged power feeding points 3 are in the same direction, since a coupling area is secured towards the outside direction of the power feeding point 3 to the center of the metaloic foil 2 by the projection part 9, the projection part 9 contributes to the coupling and the transmission characteristics are almost fixed regardless of the positional relation of the power feeding points 3.
Inventors:
Hiroshi Hatano
Mitsuru Maeda
Mitsuru Maeda
Application Number:
JP16338695A
Publication Date:
December 08, 2003
Filing Date:
June 29, 1995
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS,LTD.
International Classes:
H04B5/00; (IPC1-7): H04B5/00
Domestic Patent References:
| JP59149432A | ||||
| JP63138738U |
Attorney, Agent or Firm:
Junji Ando