非对称带状传输线T型接头等效电路分析方法
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摘要
T型接头被广泛应用于低温共烧陶瓷Low Temperature Co-fired Ceramic (LTCC)集成电路系统中,其不连续性结构会引入传输损耗,传统的分析方法没有考虑这部分损耗,导致电路分析结果不够准确。针对这个问题,提出了一种新颖的非对称带状传输线T型接头等效电路分析方法。将已获得的微带开路线不连续性等效电路模型及理论移植到非对称带状传输线中,获得了T型接头的等效电路模型,运用传输线基本理论推导出了T型接头的散射参数计算公式,经实例验证,运用等效电路分析法和IE3D软件仿真所得的散射参数吻合良好,且平均误差小于3%。
T-junctions are widely used in low temperature co-fired ceramic(LTCC) integrated circuit system,and the structure of the discontinuity may introduce transmission loss,and the traditional analytical method does not consider this kind of loss,which results in inaccurate circuit analysis results.In order to solve this problem,this paper proposes a novel equivalent circuit analytical method of T-junctions for asymmetric striplines.The obtained open circuit discontinuity equivalent circuit model and theory of microstrip lines are transplanted to asymmetric striplines.The equivalent circuit model of T-junctions is obtained,and the formula of scattering parameters of T-junctions is deduced by using basic transmission line theory.The practical example show that the results of equivalent circuit analytical method obtained in this paper are in good agreement with simulation software IE3 D results,and the average error of scattering parameters is less than 3%.
T-junctions are widely used in low temperature co-fired ceramic(LTCC) integrated circuit system,and the structure of the discontinuity may introduce transmission loss,and the traditional analytical method does not consider this kind of loss,which results in inaccurate circuit analysis results.In order to solve this problem,this paper proposes a novel equivalent circuit analytical method of T-junctions for asymmetric striplines.The obtained open circuit discontinuity equivalent circuit model and theory of microstrip lines are transplanted to asymmetric striplines.The equivalent circuit model of T-junctions is obtained,and the formula of scattering parameters of T-junctions is deduced by using basic transmission line theory.The practical example show that the results of equivalent circuit analytical method obtained in this paper are in good agreement with simulation software IE3 D results,and the average error of scattering parameters is less than 3%.
引文
[1]李菁,刘培文.一种LTCC滤波器的快速设计与实现[J].无线电工程,2018,48(3):230-234.
[2]戈江娜.基于LTCC基板的Ku波段宽带八通道T/R组件设计与实现[J].舰船电子对抗,2016,39(2):74-78.
[3]刘巍巍,江肖力,梁栋,等.L波段LTCC高抑制宽阻带低通滤波器[J].无线电工程,2017,47(8):48-51.
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[5]姜保政.基于合成渐近线技术的非对称带状线CAD公式[C]∥中国电子学会2005年全国微波毫米波会议论文集(第3册),2006:4.
[6]于正永.基于LTCC的传输线特性研究[D].南京:南京理工大学,2008.
[7]印筱路.新型LTCC功分器研究与设计[D].南京:南京邮电大学,2017.
[8]郭婧,汪常娥.X波段交叉耦合型SIR带通滤波器的设计[J].微波学报,2014,30(S1):161-164.
[9]褚庆昕,周竞科.悬置带状线T接头等效电路的提取[J].华南理工大学学报(自然科学版),2009,37(1):6-9.
[10]田歌,杨瑾屏,史生才,等.三端口T型接头建模研究及高性能分支线耦合器设计[J].电子学报,2014,42(1):199-203.
[11]Zeland Software,Inc.IE3D Simulator ver.10.2[S],2004.
[12]TANG Wanchun,CHOW Y L,TSANG K F.Different Microstrip Line Discontinuities on a Single Field-based Equivalent Circuit Model[J].IEEE Proc-Microw Antennas Propag,2004,151(3):256-262.
[13]廖承恩.微波技术基础[M].西安:西安电子科技大学出版社,1994.
[14]王子宇,张肇仪,徐承和.射频电路设计─理论与应用[M].北京:电子工业出版社,2002.
[15]BANDLER J W,BIERNACKI R M,CHEN S H,et al.Space Mapping Technique for Electromagnetic Optimization[J].IEEE Trans.Microwave Theory Tech.,1994,42:2536-2544.
[16]BANDLER J W,CHENG Q S,NIKOLOVA N K,et al.Implicit Space Mapping Optimization Exploiting Preassigned Parameters[J].IEEE Trans.Microwave Theory Tech.,2004,52:378-385.
[2]戈江娜.基于LTCC基板的Ku波段宽带八通道T/R组件设计与实现[J].舰船电子对抗,2016,39(2):74-78.
[3]刘巍巍,江肖力,梁栋,等.L波段LTCC高抑制宽阻带低通滤波器[J].无线电工程,2017,47(8):48-51.
[4]王秉中,洪劲松.非对称带状线间隙的人工神经网络模型[J].电子科技大学学报,1999(4):362-365.
[5]姜保政.基于合成渐近线技术的非对称带状线CAD公式[C]∥中国电子学会2005年全国微波毫米波会议论文集(第3册),2006:4.
[6]于正永.基于LTCC的传输线特性研究[D].南京:南京理工大学,2008.
[7]印筱路.新型LTCC功分器研究与设计[D].南京:南京邮电大学,2017.
[8]郭婧,汪常娥.X波段交叉耦合型SIR带通滤波器的设计[J].微波学报,2014,30(S1):161-164.
[9]褚庆昕,周竞科.悬置带状线T接头等效电路的提取[J].华南理工大学学报(自然科学版),2009,37(1):6-9.
[10]田歌,杨瑾屏,史生才,等.三端口T型接头建模研究及高性能分支线耦合器设计[J].电子学报,2014,42(1):199-203.
[11]Zeland Software,Inc.IE3D Simulator ver.10.2[S],2004.
[12]TANG Wanchun,CHOW Y L,TSANG K F.Different Microstrip Line Discontinuities on a Single Field-based Equivalent Circuit Model[J].IEEE Proc-Microw Antennas Propag,2004,151(3):256-262.
[13]廖承恩.微波技术基础[M].西安:西安电子科技大学出版社,1994.
[14]王子宇,张肇仪,徐承和.射频电路设计─理论与应用[M].北京:电子工业出版社,2002.
[15]BANDLER J W,BIERNACKI R M,CHEN S H,et al.Space Mapping Technique for Electromagnetic Optimization[J].IEEE Trans.Microwave Theory Tech.,1994,42:2536-2544.
[16]BANDLER J W,CHENG Q S,NIKOLOVA N K,et al.Implicit Space Mapping Optimization Exploiting Preassigned Parameters[J].IEEE Trans.Microwave Theory Tech.,2004,52:378-385.