| 摘要 |
<P>PROBLEM TO BE SOLVED: To transmit a high-frequency signal by utilizing electric field coupling by preventing generation of an electrostatic field and an induction field for transmitting a communication signal from being disturbed and suppressing generation of a radiation electric field as a disturbance wave to the outside. <P>SOLUTION: A high-frequency coupler is composed of an electrode for coupling, and a distributed constant circuit for impedance matching and resonance between respective electrodes for coupling, thus widening a band. A magnetic loss material is arranged near the electrode for coupling. Radio waves including both electric field waves and magnetic field waves, mainly absorb a magnetic field and suppress spurious noise and the influence of external interference radio waves. In the meantime, the electrostatic field and induction field are not easily affected by the magnetic field loss, thus establishing stable data communication by electric field coupling in a short distance. <P>COPYRIGHT: (C)2009,JPO&INPIT |
