DGS技术在微带无源电路中的应用
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摘要
缺陷接地结构(DGS)由光子带隙(PBG)结构发展而来,是在微波电路的接地面上蚀刻出周期或非周期性的缺陷图案,DGS具有单极点低通特性、慢波特性和高等效特性阻抗等特性,若将其合理地应用于微波平面电路中可改善微波集成电路的性能,如抑制谐波、增加阻带带宽和减小尺寸等,近年来DGS逐渐成为微波电路设计领域的一个研究热点。
本文的主要工作首先是对DGS的传输特性进行分析。根据DGS的单极点低通特性和LC等效电路理论,推导了DGS的LC等效电路,并通过电磁仿真和电路仿真对其进行验证。借助于三维电磁仿真软件和LC等效电路,分析了哑铃形DGS各参数对其电路特性的影响,并进行详细的总结。通过电磁仿真对DGS的缺点也进行了阐明,即DGS的引入会在接地板下方产生较大的电磁波辐射,对周围电路产生影响,在此基础上提出了一种改良的采用蛇形缝隙的新型DGS。
其次详细介绍了DGS应用于微带无源电路中的设计。利用DGS的单极点低通特性分别设计了一个由四个不同DGS单元级联构成的微带低通滤波器和应用单个不对称DGS设计的新型微带双工器;利用DGS的高等效特性阻抗特性设计并实现了1:4不等功分比功分器,并根据所设计的滤波器和功分器的模型和尺寸加工出了实物,仿真和测试结果的良好吻合证明了DGS在微带电路应用中的有效性和实用性。
Defected Ground Structure (DGS) is a periodic or nonperiodic defected pattern etched on the ground plane of microwave circuit, which is extended from Photonic Band-Gap (PBG) Structure. DGS has many characteristics that are single pole and low pass, slow wave and high effective characteristic impedance and so on. If it is applied in microwave plane circuits reasonably, it may greatly improve the performance of microwave integrated circuits (MIC), such as suppressing harmonic response, enlarging stopband bandwidth and reducing size and so on, so DGS is becoming a research hotspot of MIC design domain in recent years.
Firstly, the main work of this thesis is analyzing the transmission characteristic of DGS. According to the DGS characteristic of single pole and low pass and the theory of the LC equivalent circuit, the LC equivalent circuit of DGS is researched and validated by electromagnetic simulations and circuit simulations. With the help of 3-D electromagnetic simulation software and the LC equivalent circuit, the effect of changing several parameters of dumbbell shaped DGS is discussed and summarized particularly. .The drawback of DGS is analyzed by simulation too, etching DGS may lead electromagnetic radiation to the ground plane and have an impact on the surrounding circuit, so a new improved type of DGS with the snake-like gap is proposed.
Then DGS is applied in the design of microstrip passive circuits in detail. Based on the DGS characteristic of single pole and low pass, a microstrip low-pass filter which is composed of four different cascaded DGS units and a new microstrip diplexer which is consist of asymmetric DGS are designed; Using the DGS characteristic of high effective characteristic impedance, a 1:4 unequal power divider is proposed and realized. And the designed filter and power divider are processed in accordance with their models and sizes, the good agreement between simulation and test results shows the validity and feasibility of the application of DGS in the circuits.
本文的主要工作首先是对DGS的传输特性进行分析。根据DGS的单极点低通特性和LC等效电路理论,推导了DGS的LC等效电路,并通过电磁仿真和电路仿真对其进行验证。借助于三维电磁仿真软件和LC等效电路,分析了哑铃形DGS各参数对其电路特性的影响,并进行详细的总结。通过电磁仿真对DGS的缺点也进行了阐明,即DGS的引入会在接地板下方产生较大的电磁波辐射,对周围电路产生影响,在此基础上提出了一种改良的采用蛇形缝隙的新型DGS。
其次详细介绍了DGS应用于微带无源电路中的设计。利用DGS的单极点低通特性分别设计了一个由四个不同DGS单元级联构成的微带低通滤波器和应用单个不对称DGS设计的新型微带双工器;利用DGS的高等效特性阻抗特性设计并实现了1:4不等功分比功分器,并根据所设计的滤波器和功分器的模型和尺寸加工出了实物,仿真和测试结果的良好吻合证明了DGS在微带电路应用中的有效性和实用性。
Defected Ground Structure (DGS) is a periodic or nonperiodic defected pattern etched on the ground plane of microwave circuit, which is extended from Photonic Band-Gap (PBG) Structure. DGS has many characteristics that are single pole and low pass, slow wave and high effective characteristic impedance and so on. If it is applied in microwave plane circuits reasonably, it may greatly improve the performance of microwave integrated circuits (MIC), such as suppressing harmonic response, enlarging stopband bandwidth and reducing size and so on, so DGS is becoming a research hotspot of MIC design domain in recent years.
Firstly, the main work of this thesis is analyzing the transmission characteristic of DGS. According to the DGS characteristic of single pole and low pass and the theory of the LC equivalent circuit, the LC equivalent circuit of DGS is researched and validated by electromagnetic simulations and circuit simulations. With the help of 3-D electromagnetic simulation software and the LC equivalent circuit, the effect of changing several parameters of dumbbell shaped DGS is discussed and summarized particularly. .The drawback of DGS is analyzed by simulation too, etching DGS may lead electromagnetic radiation to the ground plane and have an impact on the surrounding circuit, so a new improved type of DGS with the snake-like gap is proposed.
Then DGS is applied in the design of microstrip passive circuits in detail. Based on the DGS characteristic of single pole and low pass, a microstrip low-pass filter which is composed of four different cascaded DGS units and a new microstrip diplexer which is consist of asymmetric DGS are designed; Using the DGS characteristic of high effective characteristic impedance, a 1:4 unequal power divider is proposed and realized. And the designed filter and power divider are processed in accordance with their models and sizes, the good agreement between simulation and test results shows the validity and feasibility of the application of DGS in the circuits.
引文
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[31]Jun-Seok Park,Jun-Sik Yun and Choen-Seok Park,DGS resonator with interdigital capacitor and application to bandpass fiter design[J].Electronics Letters,2004, 40(7):433-434
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[37]冯丰,肖高标.应用DGS结构的新型耦合SIR滤波器设计.信息技术,2007(3):59-62
[38]曹毅,王光明.一种改进的一维周期DGS微带线.现代雷达,2006,4(28):69-71
[39]张文剑,李征帆.有限元法结合多元Pade逼近提取缺陷接地结构的模型参数,上海交通大学学报,2006,40(3):407-410
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[55]Dal Ahn,Jun-Seok Park,Chul-Soo Kim,Juno Kim,Yongxi Qian,Tatsuo Itoh.Suppression of harmonics in Wilkinson power divider using dual-band rejection by asymmetric DGS.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,2005,53(6):2139-2144
[56]徐红艳,基于光子带隙结构的功分器的研究,大连海事硕士论文,2006年
[2]甘本祓,吴万春.现代微波滤波器的结构与设计.北京:科学出版社,1974
[3]清华大学《微带电路》编写组.微带电路.北京:人民邮电出版社,1976
[4]顾其诤,项家桢,袁孝康.微波集成电路设计.北京:人民邮电出版社.1978
[5]林为干.微波网络.北京:国防工业出版社,1978
[6]廖承恩.微波技术基础.西安:西安电子科技大学出版社,1994
[7]顾继慧.微波技术.北京:科学出版社,2004
[8]梁昌洪,谢拥军,管伯然.简明微波.北京:高等教育出版社,2006
[9]M.Makimoto,S.Yamashita.无线通信中的微波谐振器与滤波器.北京:国防工业出版社,2002
[10]Jong-Sik Lim,Chul-Soo Kim,Dal Ahn,Yong-Chae Jeong,Sangwook Nam.Design of Low-Pass Filters Using Defected Ground Structure.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,2005,53(8):2539-2545
[11]曹锐,缺陷接地结构DGS模型分析及在微波集成电路中的应用研究,合肥工业大学硕士论文,2006年
[12]刘海文,李征帆,孙小玮.缺陷接地结构在RF和微波电路中的最新应用.电子科学技术革命,2005(1):19-24
[13]闫敦豹,袁乃昌.PBG结构缺陷的谐振特性研究.微波学报,2003,19(1):29-33张
[14]张友俊,侯继红,李英.PBG结构在微波领域的应用.电讯技术,2004(6):12-17
[15]付云起,袁乃昌,张国华.适合于电路集成的PBG结构微带线.国防科技大学学报,2001,23(4):120-122
[16]Taesun Kim,Chulhun Seo.A novel photonic bandgap structure for low-pass filter ot wide stopband.IEEE MICROWAVE AND GUIDED WAVE LETTERS,2000,10(1):13-15
[17]Chul-Soo Kim,Jun-Seok Park,Dal Ahn,Jae-Bong Lim.A novel 1-D periodic defected ground structure for planar circuits.IEEE MICROWAVE AND GUIDED WAVE LETTERS,2000,10(4):131-133
[18]林强,张祖荫,郭伟.DGS微带线滤波器设计.现代雷达,2005,27(6):52-54
[19]曹毅,王光明.一种新型微带DGS低通滤波器设计.空间电子技术,2007(3):50-53
[20]Jun-Sik Yun,Geun-Young Kim,Jun-Seok Park,Dal Ahn,Kwang-Yong Kang, Jae-Bong Lim.A design of the novel coupled line bandpass filter using defected ground structure.IEEE M1T-S Digest,2000:327-330
[21]Jae-Jin Koo,Seongmin Oh,Mun-Su Hwang,etal.A New DGS Unequal Power Divider [J],Proceedings of the 37th European Microwave Conference,2007:556-559
[22]Jong-Sik Lim,Chul-Soo Kim,Jun-Seok Park,Dal Ahn,Sangwook Nam.Design of 10dB 90° branch line coupler using microstrip line with defected ground structure.ELECTRONICS LETTERS,2000,36(21):1784-1785
[23]Jong-Sik Lim,Sung-Won Lee,Chul-Soo Kim,Jun-Seok Park,Dal Ahn,Sangwook Nam.Application of defected ground structure in reducing the size of amplifiers.IEEE MICROWAVE AND GUIDED WAVE LETTERS,2002,12(7):261-263
[24]Si-Gyun Jeong,Do-Kyeong Hwang,Yong-Chae Jeong,Chul-Dong Kim.Amplifier design using 4 high impedance bias line with defect ground structure(DGS).IEEE M1T-S Digest,2002:1161-1164
[25]Jong-Sik Lim,Chul-Soo Kim,Dal Ahn,Yong-Chae Jeong,Sangwook Nam.Design of Low-Pass Filters Using Defected Ground Structure.IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES,2005,53(8):2539-2545
[26]Mrinal Kanti Mandal,Subrata Sanyal,A novel defected ground structure for planar circuits.IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS,2006,16(2):93-95
[27]Chul-Soo Kun,Jong-Sik Lim,Sang-wook Nam,Kwang-Yong Kang,Jong-Im Park,Geun-Young Kim,Dal Ahn.The equivalent circuit modeling of defected ground structure with spiral shape.IEEE MTT-S,2002:2125-2128
[28]Han-Jan Chen,Tsung-Hui Huang,Chin-Sheng Chang,Lih-Shan Chen,Na-Fu Wang,Yeong-Her Wang,Mau-Phon Houng,A novel cross-shape DGS applied to design ultra-wide stopband low-pass filters.IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS,2006,16(5):252-254
[29]Debatosh Guha,Sujoy Biswas,Manotosh Biswas.Concentric Ring-Shaped Defected Ground Structures for Microstrip Applications.IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS,2006,16(5):402-405
[30]Sio-Weng Ting,Kam-Weng Tam.Miniaturized microstrip lowpass filter with wide stopband using double equilateral U-shaped defected ground structure.IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS,2006,16(2):240-242
[31]Jun-Seok Park,Jun-Sik Yun and Choen-Seok Park,DGS resonator with interdigital capacitor and application to bandpass fiter design[J].Electronics Letters,2004, 40(7):433-434
[32]顾继慧,杨一飞,周虹,朱银霞.一种新型缺陷接地结构带通滤波器研究.南京理工大学学报,2008.32(6):763-766
[33][美]David M.Pdar,Microwave En百neering[M](中文版).北京:电子工业出版社,2007.
[34]George L.Matthaei,Leo Young,E.M.T.Jones,microwave filter,impedance-matching networks,and coupling structures,McGraw-Hill,1964
[35]J.L.Park,C.S.Kim,J.Kim,J.S.Park,Y.Qian,D.Ahn,T.Itoh.Modeling of a photonic bandgap and its application for the low-pass filter design.APMC'99 Proceedings,1999:331-334
[36]刘丹丹,肖高标.带DGS结构的宽带微带线准椭圆函数滤波器设计.信息技术,2007(3):51-55
[37]冯丰,肖高标.应用DGS结构的新型耦合SIR滤波器设计.信息技术,2007(3):59-62
[38]曹毅,王光明.一种改进的一维周期DGS微带线.现代雷达,2006,4(28):69-71
[39]张文剑,李征帆.有限元法结合多元Pade逼近提取缺陷接地结构的模型参数,上海交通大学学报,2006,40(3):407-410
[40]吕立明,周邦华.一种应用于微波平面电路的DGS新技术.遥测遥控,2005,26(2):38-43
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