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[IEEE 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - Chengdu, China (2018.3.26-2018.3.28)] 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - Design of Wideband and Wide-Angle Scanning Phased Array Based on Wideband EBG Structure
摘要： A linear dipole array based on wideband electromagnetic bandgap (EBG) is designed in this paper. The linear array is organized along the H plane and the simulated results of an infinite array show that it features a bandwidth of 24.1% (from 5.1 to 6.5GHz) while scanning to 70° in the H plane with VSWR<2.5. Then, a 1×20 finite linear dipole array based on the above element configuration is designed. The array has the ability to scan up to 75° with a gain reduction less than 3 dB at 5GHz, and scan up to 80° with a gain reduction less than 3 dB at 5.7GHz, and scan up to 88° with a gain reduction about 4 dB at 6.1GHz.
关键词： wide-angle scanning,phased array,wideband,electromagnetic bandgap
更新于2025-09-09 09:28:46
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A TUNABLE ELECTROMAGNETIC BANDGAP STRUCTURE USING PLASMA
摘要： A tunable electromagnetic-bangap (EBG) structure based on a double layer slotline using plasma is proposed. The plasma permittivity can be tuned by the electron density. The idea of integrating periodical plasma elements inside the slot to tune the stopband is investigated. An electron density and an electron collision frequency equal to 1.75 1013 cm?3 and 1010 s?1 respectively, are the plasma parameters selected in this study. The simulations reveal a shift rate of the second stopband equal to 6%. A new con?guration of the structure is also proposed to adapt it better to the experimental requirements. Based on the simulation results, adding the plasma elements to the modi?ed con?guration shifts the stopband 4% and reduces its bandwidth by 43% (at ?20 dB).
关键词： electron density,slotline,plasma,tunable electromagnetic bandgap,electron collision frequency,stopband
更新于2025-09-09 09:28:46