A Novel Multi-Band Parasitic Antenna Design in 5G Full Screen Mobile Phone

A multi-band integrated parasitic antenna design solution in 5G full screen mobile phone is proposed. The proposed antenna is located on the side of the mobile phone and near the stylus, with size of 35.9mm by 4.7mm, corresponding side clearance of mobile phone is 0.92mm. The antenna adopts injection molding process and is radiated by metal frame. The antenna type is parasitic antenna. The antenna integrates middle band (MB), high band (HB) and ultra-high band (UHB), corresponding frequency ranges of MB, HB and UHB are 1. 93GHz-2.2GHz, 2.3GHz-2.69GHz, 3.3GHz-4.2GHz respectively. The measured results show that, the passive efficiency in free space of MB, HB and UHB could obtain -5.5dB, -5.6dB and -5.1dB respectively. Also this antenna has a good performance in the mode of left head and hand, compared with free space, the attenuations of MB and HB are 3.5dB and 5.6dB respectively. One mobile phone equipped with the proposed antenna has already been mass produced and shipped.