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Isolation enhancement for dual‐band MIMO antenna system using multiple slots loading technique
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2020-05-28 , DOI: 10.1002/dac.4470 Ramesh R 1 , Usha Kiran Kommuri 1
International Journal of Communication Systems ( IF 1.7 ) Pub Date : 2020-05-28 , DOI: 10.1002/dac.4470 Ramesh R 1 , Usha Kiran Kommuri 1
Affiliation
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In this paper, a novel multiple slot loading technique is studied in detail for the isolation enhancement of the dual‐band MIMO antenna system. The proposed MIMO antenna design consists of the microstrip patch loaded with T‐shaped slots parallel to the non‐radiating edge of the patch. The frequency tuning could be achieved by varying the length of the T‐shape slot arm. The proposed MIMO antenna system is optimised for operation in WLAN and WiMAX applications. The isolation enhancement is achieved by providing simple multiple slots loaded in the ground plane between radiating elements. The length of the slots is λ/4. The system is fabricated and tested using a vector network analyser and anechoic chamber. The reduction in mutual coupling up to −29.16 dB and −24.09 dB for the 2.4 GHz and 3.4 GHz, respectively, is achieved. The bandwidths are 62.3 MHz (3.33–3.39 GHz) and 55.5 MHz (2.37–2.42 GHz), respectively. The total gain obtained in this case is 1.8 dBi at 2.4 GHz and 1.2 dBi at 3.4 GHz, respectively. The dimensions of the proposed designed antenna are 70 mm × 60 mm × 1.6 mm. The results were also verified through mutual coupling parameters like envelope correlation coefficient (ECC) and channel capacity loss (CCL) at the desired frequencies.
中文翻译：
使用多时隙加载技术的双频MIMO天线系统的隔离增强
在本文中，详细研究了一种新颖的多时隙加载技术，以增强双频MIMO天线系统的隔离度。拟议的MIMO天线设计由微带贴片组成，该贴片上装有与贴片的非辐射边缘平行的T形槽。可以通过改变T型槽臂的长度来实现频率调谐。拟议的MIMO天线系统针对WLAN和WiMAX应用中的操作进行了优化。通过在辐射元件之间的接地平面中提供简单的多个插槽，可以提高隔离度。缝隙的长度是λ/ 4。使用矢量网络分析仪和消声室对系统进行制造和测试。对于2.4 GHz和3.4 GHz，相互耦合分别降低至-29.16 dB和-24.09 dB。带宽分别为62.3 MHz（3.33-3.39 GHz）和55.5 MHz（2.37-2.42 GHz）。在这种情况下，获得的总增益在2.4 GHz时为1.8 dBi，在3.4 GHz时为1.2 dBi。建议的设计天线尺寸为70 mm×60 mm×1.6 mm。还通过在所需频率下的相互耦合参数（例如包络相关系数（ECC）和信道容量损耗（CCL））来验证结果。
更新日期：2020-05-28
中文翻译：
使用多时隙加载技术的双频MIMO天线系统的隔离增强
在本文中，详细研究了一种新颖的多时隙加载技术，以增强双频MIMO天线系统的隔离度。拟议的MIMO天线设计由微带贴片组成，该贴片上装有与贴片的非辐射边缘平行的T形槽。可以通过改变T型槽臂的长度来实现频率调谐。拟议的MIMO天线系统针对WLAN和WiMAX应用中的操作进行了优化。通过在辐射元件之间的接地平面中提供简单的多个插槽，可以提高隔离度。缝隙的长度是λ/ 4。使用矢量网络分析仪和消声室对系统进行制造和测试。对于2.4 GHz和3.4 GHz，相互耦合分别降低至-29.16 dB和-24.09 dB。带宽分别为62.3 MHz（3.33-3.39 GHz）和55.5 MHz（2.37-2.42 GHz）。在这种情况下，获得的总增益在2.4 GHz时为1.8 dBi，在3.4 GHz时为1.2 dBi。建议的设计天线尺寸为70 mm×60 mm×1.6 mm。还通过在所需频率下的相互耦合参数（例如包络相关系数（ECC）和信道容量损耗（CCL））来验证结果。
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