In this article, a Metallic Via(M-Via) based eight-port compact Ultra-Wideband (UWB) MIMO antenna is introduced for IoT applications. In proposed UWB MIMO antenna design, we employed a simple Metallic Via(M-Via) integration technique to achieve UWB bandwidth with a compact size of $54\times 54$ mm ${}^3$. The important antenna parameters, such as reflection coefficient, mutual coupling, the Peak gain, radiation pattern, and radiation efficiency, are analysed. In addition, MIMO parameters such as ECC, DG, TARC, and CCL are experimentally analysed. Also, the proposed antenna is demonstrated in a real-time environment.

In this paper, we introduce a four-port self-isolated double-sided Ultra Wide Band (UWB) MIMO antenna with WLN notch characteristics for short-range wireless high-definition (HD) video transmission applications. The double side orthogonal arrangement of the radiators is adopted to mitigate the mutual coupling between the four radiators without using an isolation structure. The proposed MIMO antenna design provides a UWB band with the notch characteristics at 5 GHz (4.6-5.9 GHz) by removing tapered rectangular slot. Employing a two-sided structure technique, it achieves an impedance bandwidth of 3.1-13 GHz while keeping isolation above 20 dB and a compact size of . Critical parameters that affect antenna performance, such as bandwidth, surface current, radiation characteristics, envelope correlation coefficient (ECC), peak gain, are being investigated. Also, the proposed simulation and measurement results of the two-sided MIMO antenna show that it is suitable for UWB because of wide impedance bandwidth, radiation pattern, high gain, low ECC, and high isolation. Indoor environment test was conducted using the National Instruments (NI) 802.11 framework to verify the real-time short-range wireless HD video transmission and reception capacity of the proposed MIMO antenna.

Background/Objectives: Cognitive radio is used as promising technologies for dynamic spectrum access and optimization of wireless resources. Under dynamic spectrum access to provide the ability of working any band of frequency based on need, the reconfigurable cognitive radio is designed. Methods/Statistical Analysis: Multicarrier modulation is the feasible method to share the spectrum without interference. OFDM is one of the efficient multicarrier techniques available for the system design. One of the problems in OFDM for spectral sharing is the side band leakage that will inject interference from secondary radio sub carrier to primary radio sub carrier. To avoid this, in this work a Filter Bank based Multi Carrier (FBMC) modulation is used. Findings: Few simulation works are reported for the interference free spectrum sharing by using FBMC. But this work analyzes the real time practical implementation of the interference free dynamic spectrum sharing. Reconfigurable is another important aspect of the implementation which is provided by the Kintex 7 FPGA implementation of the reconfigurable filter bank multicarrier modulation using NI USRP 2943R SDR platform. This FBMC based Transceiver is implemented by using fast Xilink IP cores of FFT and systolic array based FIR filter IP core. The transceiver is realized to produce output for every clock after a fixed latency 240 clocks or 6 microsecond for 40Mz clock rate. This performance is achieved using single clock loop architecture of LABVIEW FPGA tool and the parallel, pipelined architecture realization of IP cores and other building blocks. Applications/Improvements: Experimental study shows that the BER of primary user for the implemented system is better than the OFDM system by the factor of 10^-1.