An antenna with a concentrated magnetic field has a main coil and at least one pair of auxiliary coils. Each of the main coil and each auxiliary coil has at least one coil conductor. Each one of the at least one coil conductor has a virtual reference plane. The at least one pair of auxiliary coils are mounted around the main coil and an included angle is formed between the virtual reference plane of each coil conductor of each auxiliary coil and that of each coil conductor of the main coil. Lines of magnetic field generated by each coil conductor of each auxiliary coil concentrate the lines of magnetic field of the main coil to orient to a corresponding virtual reference plane of the main coil, thereby solving the magnetic leakage and EMI easily occurring outside the zone of active transmission for conventional coils using electromagnetic induction.

Applied Country	Category	專利狀態	證書號	專利權期間	研究成果公告日期
US	Elecric vehicle technology	獲證	US9142348	2015/09/22~2032/12/20