Adams & Wilks
Wireless communication system using only the magnetic field component
 In order to eliminate the unnecessary power consumption caused by the increase in frequency associated with wireless communication systems using electromagnetic induction techniques, the wireless communication system of the present invention modulates and transmits a magnetic field in accordance with information. A close-range receiver is provided with an amorphous magnetic impedance element having an impedance which varies in accordance with the modulated characteristic of the magnetic field. Use of an amorphous magnetic impedance element in the receiver results in a reduction in power and increase in sensitivity of the device. 
Seiko Instruments Inc.
H Y
H04B Y02D
inventional additional
Hitoshi Takashi Seiji Tatsuo Fumio Yoshio
Yoshida Kamimoto Kuwahara Miyoshi Kimura Inokoshi