Research on the Extraction Method of Equivalent Dielectric Constant of Slow Wave Structures
To address the miniaturization problem in antenna and microwave device design,this paper investigates the capaci-tance-enhanced slow-wave structure to reduce the phase velocity of electromagnetic waves and achieve miniaturization technology.The equivalent dielectric constant of the microstrip chip antenna and the microwave cavity can be greatly improved by loading the slow-wave structure composed of periodic metal blind holes.Studies show that the equivalent permittivity enhancement obtained by the above two methods is consistent for the same structure and size of the slow-wave structure.According to the application require-ments,the paper designs a capacitance-enhanced slow-wave structure,the slow-wave effect is very obvious,the corresponding equivalent dielectric constant can be increased by about 50%,and the corresponding antenna and microwave device circuit size can be reduced by more than 30%in theory.The simulation and experimental test results in this paper support the above conclusions,and the simulation results and the measured results are highly consistent.
microwave devices and antennasminiaturizationperiodic slow wave structuresequivalent dielectric constant
万方数据
维普
