ANTENNA AND ITS RESONANCE FREQUENCY ADJUSTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an antenna which has a wide bandwidth and can has its resonance frequency adjusted with ease. SOLUTION: The antenna has a linear antenna conductor 13 on the surface of and/or in a base body 11 made of a dielectric material or magnetic material and the antenna conductor 13 has a width-increased part 14 halfway. The bandwidth can be widened by providing the width-increased part 14 to the antenna conductor 13. Further, the resonance frequency can be adjusted to a higher or lower frequency by removing the width-increased part 14 partially almost in the arrangement direction of the antenna conductor 13 or almost perpendicularly thereto in an area from the external side of the width-increased part 14 to a position corresponding to the line width of the antenna conductor 13.