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12 zapisanych źródełEvidence: 53 • authority: 72
A cellular network or mobile network (sometimes known as cellular communication network or mobile communication network) is a telecommunications network where the link to and from end nodes is wireless and the network is distributed over land areas called cells, each served by at least one fixed-location transceiver (such as a base station). These base stations provide the cell with the network coverage which can be used for transmission of voice, data, and other types of content via radio waves. Each cell's coverage area is determined by factors such as the power of the transceiver, the terrain, and the frequency band being used. A cell typically uses a different set of frequencies from ne…
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ML assisted optimization of DR based MIMO antenna for 5G communication systems.. This work presents a dual-port cylindrical dielectric resonator antenna (CDRA) based MIMO design for 27-GHz 5G communication, assisted by a suspended complementary split-ring resonator (CSRR) metasurface for port decoupling. The antenna is realised on Rogers RT Duroid 5880 substrate of thickness 0.254 mm, and the cylindrical dielectric resonator uses Rogers RT Duroid 6010 material. In simulation, the metasurface improves the mutual coupling from about − 27.56 dB to − 45.22 dB at 27 GHz (≈ 17.6 dB enhancement) while maintaining impedance matching. A prototype is fabricated, and measurements confirm an operating…
Otwórz źródło ↗Evidence: 53 • authority: 92
Design of a Compact Ultra-Wideband Bio-Inspired Antenna Based on the Antennal Structure of <i>Allomyrina dichotoma</i>.. Grounded in structural biomimetics, this study extracts the multi-segmented tapered geometry from the 10-segmented lamellate antenna of Allomyrina dichotoma and maps it to microwave antenna design. Through biological characterization and parametric modeling, key geometric features-multi-segmented configuration, irregular contour, and bilateral symmetry-were extracted. Along the 2D pathway, a 10 × 10 × 1 mm 3 PCB microstrip antenna was designed and fabricated, achieving 111% fractional bandwidth from 4.86 to 17.05 GHz with a peak gain of 2.15 dBi and a radiatio…
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