Design of the Antenna for 4G Mobile Devices

• Main Authors: FONG-YIN JIAN, 簡鳳吟
• Other Authors: 丘增杰
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/10306892272391455452

碩士 === 國立中央大學 === 電機工程學系 === 104 === This study is mainly focused on the miniaturization of 4G-LTE band mobile phone antenna, and also a mobile device antenna for the LTE operation. The main production process will use HFSS software for antenna simulation and design, and the network analyzer for measuring the characteristics of the antenna. Proposed antenna is designed is with FR-4 substrate. Antenna size is of 15×30×1 mm3, with 50 ohm coaxial cable as the antenna feed-in structure. Feeding network with the SMD (Surface Mount Device) is constituted to achieve the matching. A strip extending from the ground surface results in the capacitive coupling effect, so the low frequency band of the antenna is broadened. A feeding structure and a short strip provide the high-frequency path. The low frequency band denotes the range from 698 MHz to 990 MHz. It can provide the requirements of the LTE700/GSM850/GSM900 applications. And the high frequency band is referred to the range from 1.64 GHz to 3.15 GHz. It can provide the requirements of the GSM1800 / GSM1900 / UMTS/LTE2300/LTE2500 applications.