To obtain satisfactory antenna characteristics even in speech communication.

Only radio waves polarized in a prescribed direction can be radiated and the deterioration of the antenna characteristics due to a leakage current can also be prevented because only current components in a prescribed direction made to flow to 1st and 2nd radiation conductors 12A and 13A are reinforced, current caused to flow to a printed circuit board 11 is negated and the generation of the leakage current can also be prevented by feeding power to the conductors 12A and 13A having the same characteristics with 180° phase difference while 1st and 2nd feeding parts 12C and 13C are adjacently provided and 1st and 2nd short-circuiting parts 12B and 13B are also adjacently provided.