| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna that can share a plurality of frequencies and can be built in an electronic device and to provide the electronic device provided with the antenna. SOLUTION: The antenna is provided with a first linear or strip conductor 11 with an electric length of about a half wavelength with respect to a first resonance frequency, a feeder section 12 one end of the 1st conductor is connected, a second plate conductor 13 to which the feeding section is placed and to which the other end of the first conductor is grounded, and an impedance element 14 varying first and second resonance frequencies loaded on the way of the first conductor. Thus, the small-sized antenna can easily match the impedance of the first conductor with the impedance of the feeding section and can be used in common for a plurality of frequencies. |
