Title:
ANTENNA FOR SHORT DISTANCE COMMUNICATION
Document Type and Number:
Japanese Patent JPH0818325
Kind Code:
A
Abstract:
PURPOSE: To provide the antenna for short distance communication capable of satisfactory transmission and reception in the control range of the Wireless Telegraphy Act.
CONSTITUTION: The information signal from a card reader/writer is transmitted to a contactless information card by electromagnetic induction. In this antenna, plural magnetic poles 40a and 40b provided in a magnetic core 40 are arranged in the scanning direction of the contactless information card, and an antenna line 41 ia wound around at least one magnetic pole 40a of these magnetic poles.
Inventors:
ORIHARA KATSUHISA (JP)
SAITOH SHOSHICHI (JP)
FUJIMOTO MASAHIRO (JP)
YANAGIHORI SUSUMU (JP)
SAITOH SHOSHICHI (JP)
FUJIMOTO MASAHIRO (JP)
YANAGIHORI SUSUMU (JP)
Application Number:
JP14646794A
Publication Date:
January 19, 1996
Filing Date:
June 28, 1994
Export Citation:
Assignee:
SONY CHEMICALS CORP (JP)
International Classes:
G08B15/00; H01Q7/06; H04B5/00; G07C9/00; (IPC1-7): H01Q7/06; H04B5/00
Attorney, Agent or Firm:
Hidekuma Matsukuma
Next Patent: コアドリル装置