摘要
为克服传统微带低通滤波器结构尺寸大和过渡带衰减慢的缺点,基于椭圆函数低通滤波器原型,设计了一款结构紧凑、插损小、过渡带陡峭的高低阻抗线微带低通滤波器。给出了该滤波器结构尺寸的计算公式,并通过仿真软件ADS和HFSS对其进行了仿真优化,采用微波材料板制作出滤波器实物并进行了测试验证,实测结果与仿真结果具有较好的一致性,且验证了该设计方案的可行性。
A compact low insertion loss and sharp transition band stepped impedance microstrip low-pass filter is de- signed based on elliptic function low-pass filter prototype to overcome the larger size and the slower transition band attenua- tion for the traditional microstrip low-pass filter. The size of the filter structure is calculated by some formulas and is simu- lated and optimized by simulation software ADS and HFSS. The final filter has been fabricated and measured. The meas- ured results are in good agreement with the simulated ones. It verifies the feasibility of the design scheme.
出处
《电子科技》
2015年第11期69-70,74,共3页
Electronic Science and Technology
关键词
低通滤波器
微带线
高低阻抗
椭圆函数
low-pass filter
microstrip lines
stepped impedance
elliptic function
