Quad-band bandpass filter design by embedding dual-band bandpass filter with dual-mode notch elements

被引：19
作者：
Cui, Chenwei [1 ]
Liu, Yun [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Minist Educ, Key Lab Radar Imaging & Microwave Photon, Nanjing 210016, Peoples R China
来源：
ELECTRONICS LETTERS | 2014年 / 50卷 / 23期
基金：
中国国家自然科学基金;
关键词：
metal detectors; finite element analysis; coils; sheet materials; magnetic fields; magnetic sheet backing; detection range; pulsed-induction metal detector system; PI metal detector system; magnetic sheet-backed search coils; PI MD system; static magnetic field distributions; finite-element method; coil geometry; magnetic sheets; FR-4; substrate; planar square spiral mono coil;
D O I：
10.1049/el.2014.2732
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A quad-band bandpass filter of compact dimensions by embedding several dual-mode notch elements into a stub-type dual-band bandpass filter is presented, and the four passbands are achieved by splitting the two passbands of the dual-band bandpass filter with two notch bands generated by the dual-mode notch elements. A prototype filter with passbands located at 1.4-1.7, 2.1-2.3, 3.3-3.6 and 5.2-5.4 GHz is designed with the help of optimisation methods. Good agreement between simulations and measurements are achieved, demonstrating good features such as controllable and wide bandwidths, higher filter order, compact dimensions and high isolations.
引用
收藏
页码：1719 / U123
页数：2
相关论文
共 3 条
[1]  
Bruschini C, 2002, A Multidisciplinary Analysis of Frequency Domain Metal Detectors for Humanitarian Demining
[2]  
Guelle D., 2003, Metal Detector Handbook for Humanitarian Demining: A Book about Metal Detectors, Covering Detection Procedures in the Field, and the Testing and Evaluation of Metal Detectors for Humanitarian Demining
[3]   Electromagnetic induction spectroscopy for clearing landmines [J].
Won, IJ ;
Keiswetter, DA ;
Bell, TH .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 2001, 39 (04) :703-709
1