To provide a small sized chip antenna with a wide band width and to provide a radio device that mounts the chip antenna.
The chip antenna 10 is provided with a rectangular solid base 11 having a mount side 111 and a feeding terminal 12 and a ground terminal 13 are placed on a side face. Furthermore, a 1st conductor 14 whose effective length is about 17.6 mm and a 2nd conductor 15 whose effective length is about 31.7 mm are wound in spiral in the inside of the base 11 in parallel with the mount face 111 of the base 11, that is, in the lengthwise direction of the base 11 closely to each other. In this case, one end of the 1st conductor 14 connects to the feeding terminal 12 and the other end forms a free end 16 in the inside of the base 11. Moreover, one end of the 2nd conductor 15 connects to the ground terminal 13 and the other end forms a free end 16 in the inside of the base 11.
TSURU TERUHISA
KAMINAMI SEIJI
SUESADA TAKESHI
DAKEYA YUJIRO
