电子学报 ›› 2020, Vol. 48 ›› Issue (8): 1641-1646.DOI: 10.3969/j.issn.0372-2112.2020.08.025

• 学术论文 • 上一篇    下一篇

作弊防控系统中独立可调双频带通滤波器设计

石光明1, 马震远2,3, 麦智荣4, 林智勇2   

  1. 1. 广东产品质量监督检验研究院, 广东广州 510670;
    2. 广东技术师范大学, 广东广州 510665;
    3. 广州启辰电子科技有限公司, 广东广州 510670;
    4. 广州市教育基建和装备中心, 广东广州 510180
  • 收稿日期:2018-03-28 修回日期:2019-10-04 出版日期:2020-08-25 发布日期:2020-08-25
  • 通讯作者: 马震远
  • 作者简介:石光明 男,1973年生,山西孝义人,广东产品质量监督检验研究院副部长,高级工程师,双硕士,全国电磁兼容标委会和全国教育仪器标委会委员,主要研究领域为电子电器产品的电磁兼容和检测认证;麦智荣 男,1980年生,广东广州人,广州市教育基建和装备中心助理工程师,广州教育学会小学科学实验研究专业委员会理事,硕士.主要研究领域为创新教育装备和实验室安全;林智勇 男,1977年生,广东梅州人,广东技术师范大学计算机科学学院教授,副院长,博士,主要研究领域为智能计算、认知无线电网络.
  • 基金资助:
    广东普通高校重点项目(No.2019KZDXM063)

Design of an Independently Adjustable Dual-band Bandpass Filter for Cheat Prevention and Control System

SHI Guang-ming1, MA Zhen-yuan2,3, MAI Zhi-rong4, LIN Zhi-yong2   

  1. 1. Guangdong Testing Institute of Product Quality Supervision, Guangzhou, Guangdong 510670, China;
    2. Guangdong Polytechnic Normal University, Guangzhou, Guangdong 510665, China;
    3. Guangzhou Qichen Electronics Technology Co., Ltd., Guangzhou, Guangdong 510670, China;
    4. Guangzhou Education Infrastructure and Equipment Center, Guangzhou, Guangdong 510180, China
  • Received:2018-03-28 Revised:2019-10-04 Online:2020-08-25 Published:2020-08-25

摘要: 文章提出了一种独立可调双频带通滤波器.该滤波器主要由一对加载变容二极管的并联耦合短路线、一对加载变容二极管的λ/2开路谐振器和公共输入输出部分组成.变容二极管和并联耦合短路线并联构成一个谐振器,产生第一通带.λ/2开路谐振器加载变容二极管,产生第二通带.通过改变加载在变容二极管上的偏置电压来改变变容二极管的电容值,使谐振器的谐振频率发生偏移,从而调节滤波器工作频率.结果表明,第一通带和第二通带的中心频率变化范围分别为0.2~0.4GHz和1.2~1.42GHz,调节百分比分别为66.5%和15.4%.仿真与测试的结果吻合良好,证明该设计方法是有效的.该滤波器可应用到作弊防控系统中.

关键词: 独立可调, 双频, 带通滤波器, 作弊防控系统

Abstract: This paper presents an independently adjustable dual-band bandpass filter.The filter is mainly composed of a pair of varactor-loaded parallel coupling short circuits,a pair of λ/2 varactor-loaded open resonators,and a common input/output component.The varactor diode and the parallel coupling short circuits are connected in parallel to form a resonator which produces the first passband.The λ/2 varactor-loaded open resonators are used to load the varactors and produce the second passband.By adjusting the bias voltage on the varactors to change the capacitance value of the varactors,the resonant frequency of the resonators can be shifted and thus the operating frequency of the filter can be adjusted.Both the simulation and testing results show that,the center frequencies of the first and second passbands range from 0.2 to 0.4GHz and from 1.2 to 1.42GHz,respectively,and their adjustment percentages are 66.5% and 15.4%,respectively.The simulation results are well consistent with the testing results,proving that our filter design method is effective.The designed filter can be applied to the cheat prevention and control system.

Key words: independently adjustable, dual-band, bandpass filter, cheat prevention and control system

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