ANTENNA DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an antenna device that is not required to be matched and can implement stable characteristics in spite of a compact design.SOLUTION: An antenna device has a first radiation element 22. A first ground element 24 is spaced from one end side of the first radiation element 22 and disposed substantially perpendicularly to the first radiation element 22. A passive element 26 is spaced from the other end side of the first radiation element 22, and disposed substantially perpendicularly to the first radiation element 22. The first ground element 24 and the passive element 26 are disposed substantially in parallel to each other. The passive element 26 is electrically connected to the first radiation element 22.