| 摘要 |
PROBLEM TO BE SOLVED: To easily receive radio wave signals and to prevent degradation of reception characteristics at the reception of the radio wave signals in radio communication equipment in which a circuit board is disposed inside a case body and an IC card can be housed separately from the circuit board. SOLUTION: A planar inverse F antenna 13 is provided so as to clamp a SIM card 11 between a circuit board 14 when the SIM card 11 is housed inside the case body of a portable telephone set. Since the planar inverse F antenna 13 is not covered with the SIM card 11, that is the SIM card 11 does not become and obstacle at the time of receiving radio wave signals, the radio wave signals are easily received. Also, in this case, the shape of a plate part 13a is rectangular and a peripheral length is almost 1/2 wavelength of the radio wave signals for the planar inverse F antenna 13, so that degradation of the reception characteristics is prevented at the reception of the radio wave signals. |
