BUILT-IN TYPE ANTENNA APPARATUS FOR MOBILE PHONE

摘要

A built-in type antenna device for a mobile phone is provided to prevent degradation of reception capability of the device when the mobile phone is folded by using sub-antenna device. A built-in type antenna device for a mobile phone includes a first planar antenna(20), a second planar antenna(30), and a sub-antenna(40). The first planar antenna has a shorting point and a feeding point. The second planar antenna is adjacent to the first planar antenna, includes a shorting point, and provides at least one slot. The sub-antenna is electrically elongated from the first planar antenna and electromagnetically coupled with the second planar antenna. A coupling unit(50) is installed on the sub-antenna and electrically couples the sub-antenna with the first planar antenna.