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Performance enhanced folded multiband MIMO antenna for mobile terminals
AEU - International Journal of Electronics and Communications ( IF 3.2 ) Pub Date : 2021-04-16 , DOI: 10.1016/j.aeue.2021.153750
Sangeetha Subbaraj , Malathi Kanagasabai , Padmathilagam Sambandam , M. Gulam Nabi Alsath , Sandeep Kumar Palaniswamy , Saffrine Kingsly

A novel compact folded antenna for 4G and 5G application in handheld devices such as mobile phones is proposed in this paper. The radiator comprises of meandered monopole, dual L-Shaped monopole, square radiator, asymmetric U-Shaped monopole, Closed Loop resonator, F-Shaped stub for providing the desired operating bands. The size reduction is achieved using folding technique. The antenna can be easily folded and integrated at the top right corner within the metal casing of the devices. Folded structure with the foot print of 50 × 6 mm2 covers multiband operation such as LTE700 / GSM850 / 900 / LTE 2300 / WLAN 2400 / LTE 2500 / Wi-MAX 3500 / Wi-Fi 5200/5800 MHz corresponds to 2G/3G/4G/5G services. To provide high data rate and throughput, MIMO concept is exploited with the folded radiators at the top left and right corners of the printed circuit board. The realized gain and radiation efficiency of the proposed antenna are 2.45/4.12/4.54/5.03/6.58 dBi and 82/85/87/89/90% respectively at the design frequencies 0.7/2.3/2.5/3.5/5.8 GHz. The SAR values of the folded antenna is computed and found to be less than 1.6 W/Kg.



中文翻译:

用于移动终端的性能增强的折叠式多频带MIMO天线

本文提出了一种新颖的紧凑型折叠天线,适用于手机等手持设备中的4G和5G应用。辐射器由弯曲的单极子,双L形单极子,方形辐射器,不对称U形单极子,闭环谐振器,F形短截线组成,以提供所需的工作频带。使用折叠技术可以减小尺寸。天线可以轻松折叠并集成在设备金属外壳内的右上角。折叠式结构,占地面积为50×6 mm 2涵盖LTE700 / GSM850 / 900 / LTE 2300 / WLAN 2400 / LTE 2500 / Wi-MAX 3500 / Wi-Fi 5200/5800 MHz等多频段操作,对应于2G / 3G / 4G / 5G服务。为了提供高数据速率和吞吐量,采用了MIMO概念,在印刷电路板的左上角和右上角折叠了辐射器。在设计频率0.7 / 2.3 / 2.5 / 3.5 / 5.8 GHz下,拟议天线的实现增益和辐射效率分别为2.45 / 4.12 / 4.54 / 5.03 / 6.58 dBi和82/85/87/89/90%。计算出折叠天线的SAR值,发现其小于1.6 W / Kg。

更新日期:2021-05-17
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