| 摘要 |
A portable electronic device is provided that reduces resonant frequency fluctuation of an antenna caused changes in the state of bodys thereof, thereby enabling the communication signal quality to be stabilized. A cellular telephone device 1 has an antenna 41 installed in an operation unit side body 2 thereof, and an electronic component 51 and an adjusting circuit 52, which is electrically connected to the electronic component 51 and adjusts the resonant frequency of the antenna 41, are installed in a display unit side body 3. A hinge portion 4 connects the operation unit side body 2 and the display unit side body 3 so as to freely change between a first state (closed state) in which the antenna 41 and electronic component 51 are capacitively coupled, and a second state (opened state) in which the antenna 41 and electronic component 51 are not capacitively coupled or capacitively coupled to a low degree. |
