【摘要】 根据光子晶体和等效电路理论在微波波段的应用,针对50Ω微带线提出了一种新型一维周期缺陷地结构(DGS),不同于以前文章的有关周期DGS,该新型的DGS单元晶格是非均匀的.理论分析、仿真和实验表明:新型的DGS电路的阻带较宽,通带的波纹较小,并且阻带的中心频率和阻带的宽度可以根据设计的要求人为地改变.更多还原

【Abstract】 According to the application of photonic crystal and equivalent circuit theories in microwave range,a novel one-dimensional(1-D) defected ground structure(DGS) used in 50 Ω microstrip line is presented.Being different from the other periodic DGS,the etched lattices of the new DGS are not uniform.The theoretic analysis,simulations and measurements show that a wider stopband and less rippled passband can be obtained with the new DGS circuits.The central frequency and bandwidth of the stopband can be changed easily.更多还原