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基于SISL的介质填充双通带滤波器设计

李双旭 马凯学 闫宁宁 陈雄 傅海鹏

李双旭,马凯学,闫宁宁,等. 基于SISL的介质填充双通带滤波器设计[J]. 电波科学学报,xxxx,xx(xx):x-xx. DOI: 10.12265/j.cjors.2021011
引用本文: 李双旭,马凯学,闫宁宁,等. 基于SISL的介质填充双通带滤波器设计[J]. 电波科学学报,xxxx,xx(xx):x-xx. DOI: 10.12265/j.cjors.2021011
LI S X, MA K X, YAN N N, et al. A dielectric-filled dual-band bandpass filter based on SISL technology[J]. Chinese journal of radio science,xxxx,xx(xx):x-xx. (in Chinese). DOI: 10.12265/j.cjors.2021011
Citation: LI S X, MA K X, YAN N N, et al. A dielectric-filled dual-band bandpass filter based on SISL technology[J]. Chinese journal of radio science,xxxx,xx(xx):x-xx. (in Chinese). DOI: 10.12265/j.cjors.2021011

基于SISL的介质填充双通带滤波器设计

doi: 10.12265/j.cjors.2021011
基金项目: 国家自然科学基金(61831017)
详细信息
    作者简介:

    李双旭:(1996—),男,天津大学微电子学院硕士研究生,主要研究方向为微波滤波器理论与设计

    马凯学(1973—),男,天津大学微电子学院教授,主要研究方向为微波毫米波电路技术

    闫宁宁:(1990—),女,天津大学微电子学院讲师,主要研究方向为天线理论与设计

    陈雄:(1990—), 男,天津大学微电子学院副教授,主要研究方向为微波毫米波电路器件非线性设计与先进测量方法

    傅海鹏:(1985—),男,天津大学微电子学院副教授,主要研究方向为射频集成电路

    通讯作者:

    马凯学 E-mail: makaixue@tju.edu.cn

  • 中图分类号: TN014

A dielectric-filled dual-band bandpass filter based on SISL technology

  • 摘要: 为实现滤波器的小型化,文中基于介质集成悬置线(substrate integrated suspended line, SISL)结构提出了一种介质填充双通带滤波器的设计方案. 首先将高介电常数的介质块填充入SISL的空气腔中,提升SISL的等效介电常数,实现电路的小型化,高介电常数介质块可以直接被SISL固定;然后利用T型结连接两组工作在不同频段的滤波器从而使得两个通带相对独立;最后利用仿真软件进行优化,确定了介质填充双通带滤波器的尺寸,并进行加工与测试. 仿真与测试结果表明,二者具有较好的一致性,两个通带频率内的回波损耗均优于15 dB,电路的核心面积为0.058 λg×0.139 λgλg为SISL在第一通带中心频率处的导波波长). 此双通带滤波器具有小尺寸、自封装等优势,且所有层介质基板均采用低成本的FR4板材,降低了制造成本.
  • 图  1  七层SISL介质填充结构三维示意图

    Fig.  1  Three-dimensional schematic of the seven-layer SISL dielectric-filed structure

    图  2  所有层介质基板俯视图

    Fig.  2  The top view of all substrate boards

    图  3  七层SISL介质填充结构侧视图

    Fig.  3  The cross view of the dielectric-filled structure based on seven-layer SISL

    图  4  SISL介质填充双通带滤波器的拓扑结构

    Fig.  4  The topology of the dielectric-filled dual-band bandpass filter based on SISL

    图  5  电路层G7结构图

    Fig.  5  Configuration of the circuit layer G7

    图  6  螺旋谐振器填充高介电常数介质块前后响应的变化

    Fig.  6  The simulation of the spiral-like resonator with or without dielectric-filled

    图  7  单一滤波单元的电磁耦合关系等效电路图

    Fig.  7  The equivalent circuit of the electromagnetic coupling relationship of a single filtering section

    图  8  不同W1值对频率响应的影响

    Fig.  8  The impact of different W1 on the frequency response

    图  9  不同W2值对频率响应的影响

    Fig.  9  The impact of different W2 on the frequency response

    图  10  多层PCB板结构以及SISL自封装介质填充双通带滤波器

    Fig.  10  Multilayer PCB structure and the self-packaged dielectric-filled dual-band bandpass filter based on SISL

    图  11  SISL介质填充双通带滤波器的仿真与测试结果

    Fig.  11  The simulated and measured results of the dielectric-filled dual-band bandpass filter based on SISL

    表  1  双通带滤波器电路层的参数

    Tab.  1  Parameters of the dual-band bandpass filter circuit layer

    W1W2W3W4W5W6W7W8W9
    0.150.150.150.150.150.30.150.20.15
    W10W11W12L1L2L3L4L5L6
    0.20.30.24.255.653.450.650.50.83
    下载: 导出CSV

    表  2  本设计与近期其他文献中双通带滤波器对比

    Tab.  2  Comparison of this design with other dual-band bandpass filters in recent literatures

    文献电路尺寸(λg 2)工作频率/GHz自封装传输线种类介质基板材料S11 /dB通带带宽
    /%
    插入损耗
    /dB
    通带隔离度
    /dB
    [1]0.0220.90/1.50微带线Rogers 4003<-15/<-2042.0/15.00.20/0.50>40
    [4]0.0402.10/3.43微带线Rogers 4003<-10/<-1517.1/12.21.40/1.90>30
    [9]0.0322.40/5.20SISLFR4和Rogers5880<-15/<-1545.4/21.60.59/0.55>20
    [11]0.0232.55/3.91SISLFR4和Rogers5880<-10/<-1513.0/5.42.00/3.40>40
    本设计0.0083.55/4.96SISLFR4<-15/<-1521.6/9.31.98/3.83>30
    下载: 导出CSV
  • [1] CHEN C F, CHANG S F, TSENG B H, et al. Compact dual-band stepped-impedance resonator filter with separate coupling paths[J]. Electronics letters,2014,50(21):1551-1552. DOI: 10.1049/el.2014.2982
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出版历程
  • 收稿日期:  2021-06-08
  • 网络出版日期:  2021-10-21

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