Patent ID: 8331859
Filing Date: 2012-12-11
Classification: H01Q

Abstract:
1. A communication apparatus comprising: a communication circuit section that processes a high-frequency signal for transferring data; a transfer path for the high-frequency signal connected to the communication circuit section; a ground; a coupling electrode supported opposite the ground and away in height from the ground by a distance that is ignorable with respect to a wavelength of the high-frequency signal; a resonance section that increases a current flowing into the coupling electrode via the transfer path; and a main body housing that assumes a plurality of placement postures and that houses the respective components, one end surface of the main body housing serving as a reading surface in which the coupling electrode is disposed at a position offset from a center of the reading surface, wherein an infinitesimal dipole is formed from a line segment connecting between a center of a charge accumulated in the coupling electrode and a center of an image charge accumulated in the ground, and the high-frequency signal is transferred toward a communication partner disposed oppositely so as to form an angle of substantially 0 degrees with a direction of the infinitesimal dipole.