摘要
基于T型谐振器结构,设计了一款新型小型化可重构滤波器。它可以通过开/关射频开关,实现三种滤波器的重新配置。这三种模式分别为带阻滤波器(BSF)、宽阻带带阻滤波器(WB-BSF)和双模带通滤波器(DB-BPF)。设计并制造了一款小型可重构滤波器实物(ε_r=2.65,h=1 mm)。其中,带阻滤波器的阻带中心频率为3.89 GHz,-3 dB相对带宽为90.9%(2.12-5.65 GHz);宽带带阻滤波器的阻带中心频率为3.54 GHz,-3 dB相对带宽为137.85%(1.1~5.98 GHz);双模带通滤波器的两个通带中心频率分别为1.53 GHz和6.89 GHz,-3 dB相对带宽分别为17.6%(1.4~1.67 GHz)和1.16%(6.85~6.93 GHz),两通带之间回波损耗优于15 dB。实物测试结果与仿真结果基本一致。
A novel compact reconfigurable filter is designed based on the T-shaped resonator. It can reconfigure three kinds of filters by switching on/off RF switches. These three modes are band-stop filter(BSF), wideband band-stop filter(WB-BSF) and dual-band bandpass filter(DB-BPF). A compact reconfigurable filter is designed and manufactured(ε_r=2.65,h=1 mm). The center frequency of the wideband band-stop filter is 3.89 GHz, and the-3 dB fractional bandwidth is 90.9%(2.12-5.65 GHz). The wideband band-stop filter has a stopband center frequency of 3.54 GHz and-3 dB fractional bandwidth of 137.85%(1.1-5.98 GHz). The dual-band band-pass filter has two passband center frequencies of 1.53 GHz and 6.89 GHz,-3 dB fractional bandwidth is 17.6%(1.4-1.67 GHz) and 1.16%(6.85-6.93 GHz), respectively, and the return loss between the two passbands is better than 15 dB. The measured results are consistent with the simulation results.
作者
张友俊
贾式钰
ZHANG You-jun;JIA Shi-yu(School of Information Engineering.Shanghai Maritime University,Shanghai 201306,China)
出处
《微波学报》
CSCD
北大核心
2019年第6期61-65,共5页
Journal of Microwaves
基金
上海市科委基金项目(17ZR1411100)
关键词
T型谐振器
带阻滤波器
宽阻带带阻滤波器
双模带通滤波器
可重构滤波器
T-shaped resonator
band-stop filter(BSF)
wideband band-stop filter(WB-BSF)
dual-band bandpass filter(DB-BPF)
reconfigurable filter
