To provide an antenna of small height and which can be made compact, having high input impedance, wide specific band width and high performance.
The antenna device is provided with a ground face 1, a first radiation electrode 5 having prescribed bending structure, where one end 5a is connected to a feeding point 3 and the other end 5b to a ground face 1 and a second radiation electrode 6, which is installed adjacent in parallel to the first radiation electrode 5 and has prescribed bending structure, where both ends 6a and 6b are connected to the ground face 1. Structure is made low in height, input impedance is raised, specific band width can be widened and the balance of the radiation resistance of the first and second radiation electrodes 5 and 6 is made satisfactory, and a specific band width can efficiently be made wide having satisfactory characteristics.
WATADA KAZUO
YOSHIZAKI HIROSHI
HAMADA KOUJI
MURAKAWA SHUNICHI
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