基于阶梯阻抗发夹谐振器的小型低通滤波器

Miniature Low Pass Filter Using Stepped Impedance Hairpin Resonator

摘要:

提出一种基于阶梯阻抗发夹谐振器的小型化微波低通滤波器,该滤波器仅由包含一节微带线的阶梯阻抗发夹谐振器构成。设计结果表明,滤波器3dB通带从DC(Direct Current)到2GHz,回波损耗优于10dB,且插入损耗从DC到1.7GHz时优于0.5dB,带外抑制从2.9～4GHz优于20dB。仿真结果和实验结果吻合良好。这种滤波器尺寸小,易制造,且具有陡峭的截止频率响应特性,可应用于许多微波系统中。

Abstract:

A miniature microwave low pass filter using a microstrip stepped impedance hairpin resonator is proposed.The proposed filter only consists of a stepped impedance hairpin resonator using simple micro-strip line section.As a result,the filter has a 3dB pass