SUBSTRATE ANTENNA

PROBLEM TO BE SOLVED: To provide a small substrate antenna which operates in at least two bands close to each other.SOLUTION: A substrate antenna of this invention includes: an annular metal tape disposed on a substrate; a radiator including first and second radiation members which are symmetrically placed while being enclosed by the metal tape; and a signal transmission line which is connected with the radiator and includes a conductor and a shielding body. The metal tape is cut thereby providing a first feedback and a second feedback in the metal tape. The conductor is connected with the first feedback and the first radiation member. The shield body is connected with the second feedback and the second radiation member.