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A Novel Compact Highly Isolated UWB MIMO Antenna with WLAN Notch |
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| Authors: | Muhammad Awais Shahid Bashir Awais Khan Muhammad Asif Nasim Ullah Hend I. Alkhammash |
| Affiliation: | 1.Department of Electrical Engineering, University of Engineering and Technology, Peshawar, 25000, Pakistan 2 Department of Electrical Engineering, University of Science and Technology, Bannu, 28100, Pakistan 3 Department of Electrical Engineering, College of Engineering Taif University,Al-Hawiyah, Taif, P.O. Box 888, Saudi Arabia 4 Department of Electrical Engineering, College of Engineering, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia |
| Abstract: | This paper presents a compact Multiple Input Multiple Output(MIMO) antenna with WLAN band notch for Ultra-Wideband (UWB)applications. The antenna is designed on 0.8 mm thick low-cost FR-4 substratehaving a compact size of 22 mm × 30 mm. The proposed antenna comprisesof two monopole patches on the top layer of substrate while having a sharedground on its bottom layer. The mutual coupling between adjacent patcheshas been reduced by using a novel stub with shared ground structure. The stubconsists of complementary rectangular slots that disturb the surface currentdirection and thus result in reducing mutual coupling between two ports. Aslot is etched in the radiating patch for WLAN band notch. The slot is usedto suppress frequencies ranging from 5.1 to 5.9 GHz. The results show that theproposed antenna has a very good impedance bandwidth of |S11| < −10 dBwithin the frequency band from 3.1–14 GHz. A low mutual coupling of lessthan −23 dB is achieved within the entire UWB band. Furthermore, theantenna has a peak gain of 5.8 dB, low ECC < 0.002 and high Diversity Gain(DG > 9.98). |
| Keywords: | Multiple input multiple output (MIMO) ultra-wide band (UWB) defected ground structure envelope correlation coefficient diversity gain |
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