PLANE ANTENNA

PROBLEM TO BE SOLVED: To provide a plane antenna being capable of reducing a cost by a simple constitution while obtaining extremely wide band characteristics. SOLUTION: Rectangular tabular elements 11a and 11b are arranged on a plane at a specified interval (d), and a tabular half-wavelength dipole antenna 10 is constituted. In the tabular elements 11a and 11b, overall lengths L (lengths in the current direction) are set in approximately 0.5 λ0, widths H (lengths in the direction orthogonal to the current direction) in approximately λ0/3, and the interval (d) in approximately 0.02 λ0. An electric-power supply 12 is mounted at a central place in the length in the magnetic-field direction, and an electric power is supplied between the tabular elements 11a and 11b. COPYRIGHT: (C)2006,JPO&NCIPI