聊城大学学报（自然科学版）2026，Vol.39Issue(3)：382-390,9.DOI:10.19728/j.issn1672-6634.2025040011
加载引向器的SSPPs超宽带Vivaldi天线设计
Design of ultra-wideband Vivaldi antennas for SSPPs loaded with directors
摘要
Abstract
A spoof surface plasmon polaritons(SSPPs)based ultra-wideband Vivaldi antenna integrated with a director was proposed in this paper.To address the low gain limitation of conventional Vivaldi antennas,a performance breakthrough was achieved through the synergistic integration of SSPPs waveguides and director loading structures.Initially,an SSPPs waveguide structure featuring periodic grooves was incorporated into the traditional Vivaldi antenna.By optimizing the elliptical gradient matc-hing design,the surface SSPPs mode was effectively excited,yielding significant gain enhancement while preserving ultra-wideband characteristics.Furthermore,a concave-shaped directional array was implemen-ted on the SSPPs-enhanced ultra-wideband Vivaldi antenna.Through meticulous optimization of unit dimensions and periodic arrangement,surface current distribution was precisely controlled and surface wave suppression was achieved,resulting in a peak gain of 12.28 dBi,radiation efficiency up to 98%,and an operational bandwidth spanning 14.63～36.54 GHz.The proposed configuration employs a low-loss Rogers RT5880 dielectric substrate,realizing low-profile geometry,high impedance matching,and stable end-fire radiation characteristics.Simulation results demonstrate that this design simultaneously achieves ultra-wideband operation,high gain,and superior efficiency in millimeter-wave frequencies,providing a novel paradigm for high-performance antenna development in next-generation millimeter-wave.关键词
人工表面等离激元/Vivaldi天线/引向器/超宽带Key words
spoof surface plasmon polaritons/vivaldi antenna/director/ultra-wideband分类
信息技术与安全科学引用本文复制引用
徐娟,王伟,王俊龙,王建超..加载引向器的SSPPs超宽带Vivaldi天线设计[J].聊城大学学报（自然科学版）,2026,39(3):382-390,9.基金项目
山东省自然科学基金项目(ZR2023MF038资助 （）
