S波低温共烧陶瓷巴伦滤波器小型化设计
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摘要
利用低温共烧陶瓷叠层工艺设计了一款具有带通响应的紧凑型低温共烧陶瓷巴伦滤波器。微型化的巴伦采用Marchand Balun结构和LTCC的立体集成结构,巴伦内部带状线利用宽边带状线结构,采用一种螺旋化方式,减小巴伦的体积。经过电磁仿真优化和实际加工滤波器的测试结果表明:滤波器在2 400 MHz～2 500 MHz插入损耗小于3.2 dB,不平衡端驻波比小于2.0,相位差为180°±10°。
A low-temperature co-fired ceramic Balun filter with a bandpass response was designed using a low-temperature co-fired ceramic laminate process. The miniaturized Balun uses the three-dimensional integrated structure of the Marchand Balun structure and the LTCC(Low Temperature Co-fired Ceramic). The Balun internal stripline utilizes a broad-side stripline structure and uses a spiraling method to reduce the volume of the Balun. After the electromagnetic simulation optimization and actual processing filter test results show that:the filter insertion loss is less than 3.2 dB in 2 400 MHz～2 500 MHz,unbalanced end VSWR is less than 2.0,and the phase difference is 180°±10°.
A low-temperature co-fired ceramic Balun filter with a bandpass response was designed using a low-temperature co-fired ceramic laminate process. The miniaturized Balun uses the three-dimensional integrated structure of the Marchand Balun structure and the LTCC(Low Temperature Co-fired Ceramic). The Balun internal stripline utilizes a broad-side stripline structure and uses a spiraling method to reduce the volume of the Balun. After the electromagnetic simulation optimization and actual processing filter test results show that:the filter insertion loss is less than 3.2 dB in 2 400 MHz～2 500 MHz,unbalanced end VSWR is less than 2.0,and the phase difference is 180°±10°.
引文
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[15] 张丽华,张金利.LTCC工艺技术研究[J].半导体技术,2010,35(8):810-812.
[2] Yeung J K,Wu K L.Anintegrated RF Balanced-Filter with Enhanced Rejection Characteristics[C]//IEEE MTT-S Int Microw Symp Dig,2005:713-716.
[3] Oliver B M.Directional Electromagnetic Couplers[J].Proceedings of the Ire,1954,42(11):1686-1692.
[4] Paul Shelton J.Impedance of Offset Parallel-Coupled Strip Transmission Lines[J].IEEE Trans Microwave Theory and Techniques,1966,MTT-14(1):7-15.
[5] Yorozu Y,Hirano M,Oka K,et al.Electron Spectroscopy Studies on Magneto-Optical Media and Plastic Substrate Interface[J].IEEE Translation Journal on Magnetics in Japan,1987,2(8):740-741.
[6] 黄小晖,吴国安.多传输零点LTCC带通滤波器的设计与实现[J].半导体技术,2011,36(12):957-961.
[7] 邓贤进,李家胤,张健.微波腔体滤波器的快速设计与仿真[J].微波学报,2006,22(4):53-56.
[8] 程兴,苏涛,梁昌洪.交叉耦合微波滤波器传输零点的独立性分析[J].微波学报,2006,22(1):34-38.
[9] 黄小晖,吴国安.多传输零点LTCC带通滤波器的设计与实现[J].半导体技术,2011,36(12):957-961.
[10] 黄凯,张申,卑璐璐.基于反耦合线的宽带带通滤波器设计[J].电子元件与材料,2015,34(4):39-42.
[11] 雷振亚.射频/微波电路导论[M].西安:西安电子科技大学出版社,2005.
[12] 许佳,覃亚丽,吴小燕,等.LTCC 带通滤波器的实现[J].电子元件与材料,2005,24(1):45-48.
[13] 尉旭波,曾志毅,王浩勤,等.LTCC抗EMI 滤波器研制[J].电子元件与材料,2008,27(6):9-11.
[14] 翁玲,曹晓宁,徐行,等.带磁芯励磁线圈的阻抗匹配[J].传感技术学报,2017,30(9):1330-1334.
[15] 张丽华,张金利.LTCC工艺技术研究[J].半导体技术,2010,35(8):810-812.