Revolutionizing Intelligent Transportation Systems with Cellular Vehicle-to-Everything (C-V2X) technology: Current trends, use cases, emerging technologies, standardization bodies, industry analytics and future directions

A compact metasurface (MS) based MIMO antenna with wideband operation and high isolation characteristics is proposed for sub-6 GHz applications. A single element is constructed by a slot coupled with 2 × 2 unit cells MS. For mutual coupling suppression, the MS of each MIMO element is grounded at proper positions by metallic vias. Compared to other reported designs, the proposed antenna possesses several unique features including a simple decoupling method with no extra space requirement, compact size, and wideband operation. For verification, the measurements have been implemented on a fabricated prototype with overall dimensions of 0.85λ c × 0.48λ c × 0.03λ c (λ c is the free-space wavelength at center operating frequency) and the center-to-center element spacing of 0.43λ c . The measured results indicate that the proposed design has a wide operating bandwidth of 15% (3.7 – 4.3 GHz) with high isolation of better than 25 dB. In addition, the measured maximum gain is about 4.1 dBi, and good diversity performance is also achieved. The proposed MIMO antenna is a potential candidate for 5G applications operating at the NR77 band.

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A Metasurface-Based MIMO Antenna with Compact, Wideband, and High Isolation Characteristics for Sub-6 GHz 5G Applications

Isolation Enhanced Compact Dual-Mode 4-Port MIMO Design Using Slot-Based Switchable DGS Decoupling Filters

Low-Profile, Low Sidelobe Array Antenna with Ultrawide Beam Coverage for UAV Communication

Information technology's swift progression has rendered network security a critical component of modern infrastructure. Artificial Intelligence (AI) has revolutionized network security, particularly in threat detection and defense mechanisms. Leveraging its advanced data processing and pattern recognition capabilities, AI can forecast and counter potential network threats with enhanced precision and efficiency. The burgeoning global AI market reflects its expansive potential in bolstering network security. By emulating the neural networks of the human brain, AI bolsters threat detection rates, dynamically refines security strategies, and enables automated response and recovery from cyber-attacks. Studies suggest that AI's integration can markedly diminish the risk of network breaches and fortify the reliability of security measures.As the cyber landscape grows more intricate and threats evolve, ongoing innovation in AI is imperative for future advancements. The anticipation is that AI will assume an increasingly pivotal role in network security, offering robust defense against the escalating complexity of cyber threats.

AI-Powered Cybersecurity: Enhancing Threat Detection and Defense in the Digital Age

Three-element circularly polarized MIMO antenna with self-decoupled probing method for B5G-V2X communications

This paper presents two miniaturized designs of quadrature power splitter (QPS) using the state-of-the-art composite microstrip and coplanar-waveguide (CM/CPW) transmission line at 1 GHz. Two compact QPSs, Design A and Design B, are optimized with zigzag-CM/CPW lines in small sizes of 0.057×0.027 λ2 and 0.050×0.037 λ2, respectively. They both have advantages of low cost and easy fabrication attributed to the use of only a single dielectric substrate-layer. While ensuring the miniaturization of circuit board, the power imbalance is minimized at 0.2 dB between two output ports, whereas the error of quadrature (90°) phase is suppressed as low as 0.2° at the center frequency. Besides, high levels of port isolation are achieved within the overlapped fractional bandwidth (15 dB) from 0.78 to 1.29 GHz (Design A) and 0.75 to 1.22 GHz (Design B), respectively. This kind of design has great research and reference value for the miniaturization design of linear vector modulator and micro broadcast circuit design in the future.

Design of Compact Quadrature Power Splitters Using CM/CPW Transmission Lines

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Three-element circularly polarized MIMO antenna with self-decoupled probing method for B5G-V2X communications

Design of Compact Quadrature Power Splitters Using CM/CPW Transmission Lines