| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for improving separation characteristics between two loop antennae.SOLUTION: In a board 1100, an eddy current trap 1106, which is a resonance tank circuit for absorbing an electromagnetic field, is installed at a predetermined distance from two loop antennae 1102 and 1104. The eddy current trap 1106 comprises a Q-value reduction resistance 1112, and a capacitive clearance 1114 between an inductive trace 1108 and a ground surface 1110. The actual eddy current trap 1106 is firmed of a concentrated constant element or a distributed constant element, or formed by combining the two constant elements together. |
