ANTENNA SYSTEM AND COMMUNICATION UNIT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide the antenna system that is made thin in profile where stability of an entire circuit is attained without deteriorating the overall gain. SOLUTION: An antenna 3 and an amplifier 4 that amplifies a signal received by the antenna 3 are mounted on the same board 2 and a phase shift circuit 11 to adjust a phase condition of a closed loop configured with the antenna 3, the amplifier 4 and a space is provided between the antenna 3 and the amplifier 4 to configure the antenna system 10. Thus, the circuit of the antenna system is made stable to reduce the deterioration in the overall gain.