Kendi için mikro şerit anten tasarımı ve üretimi güç modern kablosuz sistem

Due to the urgent need for modern antenna technology to fit the recent applications including 5G systems, IoT terminals, and space satellite communication systems. However, the antenna technology still rarely relaxed due to the antenna size and passive performance limitations. This involves many advances to include self-powered systems based on green energy based on solar and radio frequency resources. Therefore, novel-reconfigurable sub-6 GHz microstrip patch- antenna operating on three resonant frequencies 3.6, 3.9, and 4.9 GHz is designed for 5G- applications. The proposed antenna is structured from metamaterial-(MTM) array with matching circuit printed around a printed strip line. Antenna is excited with a coplanar waveguide to achieve an excellent-matching over a wide frequency band. The suggested antenna shows-excellent-performance in expression of S11, gain, and radiation-pattern that are controlled by two photo-resistances. Suggested antenna shows various operating-frequencies and radiation-patterns after changing the photo-resistance cases. The main antenna novelty is realized by splitting the main-lobe which tracks more users on same operating-frequency. Nevertheless, major radiation-lobe can be steered to required-location by controlling the surface current motion utilizing two varactor-diodes on the matching circuit. Next, the proposed design is developed to 3D array geometry for 5G-applications. The suggested antenna-array provides wideband with excellent matching-impedance, S11≤-10dB, from 3.1GHz to 5.75GHz. The suggested MIMO array is constructed from four elements arranged on cubical structure to provide low mutual-coupling, less than -20dB, over all interested frequency bands. Each element is excited with coplanar-waveguide-(CPW). The radiation patterns are controlled by two optical-switches of Light Dependent Resistors-(LDRs). The suggested array shows excellent response to LDR statue changes in terms of directivity. The proposed antenna frequency band is found to be insignificantly affected with respect to LDR switching statues. The suggested array is fabricated and tested experimentally on expressions of S-parameters, gain and radiation-patterns at 3.6GHz, 3.9GHz, and 4.9GHz. The maximum gain is found to be 3.6dBi, 4.2 dBi, and 4.1dBi at 3.6GHz, 3.9GHz, and 4.9GHz, respectively. Nevertheless, it is found that the suggested array achieved a significant-beam steering about ±30o, ±40o, and ±45o at 3.6GHz, 3.9GHz, and 4.9GHz, respectively, after changing LDR switching statues. Such technique ensures the antenna beam controlling without need for biasing circuits. Next, RF energy harvesting system is proposed for self-powered system with solar panel integration. At the end, the antenna array is designed and fabricated, the simulation is done by using CST Studio software. It is found that the experimental results of fabrication are agreed very well with those obtained from simulations.