Dual-Band Dual-Mode Orthogonally Placed CDRA-Based MIMO Antenna for Wi-fi/WLAN Applications
A dual-port, dual-band (2 × 1) multiple-input multiple-output (MIMO) CDRA is proposed for Wi-fi and WLAN applications. A novel pentagon-shape aperture has been used to excite the CDRA that gives rise to dual-mode generation, i.e., (HE11δ and HE12δ). The p
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Abstract A dual-port, dual-band (2 × 1) multiple-input multiple-output (MIMO) CDRA is proposed for Wi-fi and WLAN applications. A novel pentagon-shape aperture has been used to excite the CDRA that gives rise to dual-mode generation, i.e., (HE11δ and HE12δ ). The presented MIMO antenna performs well at the operable frequencies of 2.4 GHz–2.8 GHz and 5.27 GHz–6 GHz with the FW of 18.2% and 12.8%, respectively. Isolation has been compared by placing the antenna 2 orthogonally to antenna 1 and getting |S 12 | < −33 dB at both the resonating frequencies. Various diversity performances of the presented MIMO antenna have been evaluated with respect to two parameters, i.e., diversity gain (DG), envelope correlation coefficient (ECC). Keywords Multiple-input multiple-output (MIMO) · Cylindrical dielectric resonator antenna (CDRA) · Hybrid antenna · Slot · Isolation
A. K. Dwivedi (B) · A. K. Singh Department of Electronics & Communication Engineering, Indian Institute of Information and Technology Allahabad, Allahabad, India e-mail: [email protected] A. K. Singh e-mail: [email protected] A. Sharma Department of Electronics & Communication Engineering, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India e-mail: [email protected] P. N. Tripathi Department of Radio Engineering and Cybernetics, Moscow Institute of Physics and Technology, Moscow, Russia e-mail: [email protected]
© Springer Nature Singapore Pte Ltd. 2021 D. Harvey et al. (eds.), Advances in VLSI, Communication, and Signal Processing, Lecture Notes in Electrical Engineering 683, https://doi.org/10.1007/978-981-15-6840-4_11
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1 Introduction In the field of radio broadcasting system, the data transmission with elevating speed along with quality and robustness has become the need of the hour. In the fast-moving technological world, it is recommended to transmit/receive multi-data simultaneously and for this to achieve MIMO antenna plays a vital role in it [1]. In the last two decades, DRA has been able to draw the attention of the researchers because of its minimum losses, broader impedance bandwidth and availability of variable shapes and excitation methods. These attributes has proven the DRA to been inculcated in the field of MIMO applications. Limited work has been done in the field of MIMO DRA as far as open literature is concern [2–6]. Ishimiya et al. introduced a compact DRA MIMO antenna [2]. In Ref. [3], a rectangular MIMO for 4G application was proposed. In Ref. [4], Yan et al. presented a CDRA for LTE femtocell base station. In order to transmit the data independently and efficiently, it is desirous to obtain decent isolation among the elements of the antenna and for that several methods are available in [5–8]. In [5–7], different techniques have been discussed to improvise the isolation by generating two orthogonal modes but the problem arises as the structure becomes more complex due to the use of metallic strip in the coaxial probe. Nevertheless, this technique is more sui
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