Patent ID: 8903335

Claim:
An electronic device having a wireless communication function, the device comprising: an electronic component including at least an operation portion, an external connection terminal, and an electrically conductive mounting board; a circuit board on which the electronic component is mounted; a controller configured to perform processing in accordance with an operation input from the operation portion; and a wireless communication processor configured to process a radio signal, wherein the mounting board includes: a power-feeding leg piece, a first short-circuiting leg piece for impedance adjustment, provided adjacent to the power-feeding leg piece with a cut-out portion interposed therebetween, the first short-circuiting leg piece being separated from the power-feeding leg piece by a first distance; and a second short-circuiting leg piece for resonance frequency adjustment, the second short-circuiting leg piece being separated from the power-feeding leg piece by a second distance greater than the first distance, and wherein the power-feeding leg piece is connected to the wireless communication processor so as to allow high frequency communication, and the first short-circuiting leg piece and the second short-circuiting leg piece are connected to grounded portions, such that the mounting board operates as an antenna, the power-feeding leg piece being a power feeding portion for the antenna.