All Title Author
Keywords Abstract


小型化交指型LTCC带通滤波器设计
The Design of a Miniaturized Interdigital LTCC Bandpass Filter

DOI: 10.12677/HJWC.2016.62005, PP. 33-38

Keywords: 带通滤波器,交指型,加载电容,低温共烧陶瓷,小型化,交叉耦合
Bandpass Filter
, Interdigital, Capacitance-Loading, Low Temperature Co-Fired Ceramic, Miniaturization, Cross-Coupling

Full-Text   Cite this paper   Add to My Lib

Abstract:

本文提出了一种基于LTCC技术的小型化交指型带通滤波器的设计方法,通过在交指线末端加载对地电容,压缩了谐振器尺寸,将对地电容布置在分立的空间中,避免了电容间的耦合干扰,引入非相邻谐振器间交叉耦合,在通带两端各产生一个零点,提高了边带抑制。设计了一款中心频率2.3 GHz,带宽200 M交指型带通滤波器,插损小于2.5 dB,通带波动优于0.5 dB,利用三维仿真软件HFSS建模及优化,并利用LTCC工艺加工制造,尺寸仅为3 mm × 2 mm × 1.5 mm,经测试,实际测试曲线与仿真曲线符合较好,验证了设计的有效性。
A method of designing miniaturized interdigital bandpass filter based on LTCC technology was proposed, through loading ground capacitance at the end of interdigital transmission line, com-pressed the volume of resonator, to arrange the ground capacitance in discrete space, avoided the coupling interference between themselves, then cross-coupling was introduced between nonad-jacent resonator, generated two transmission zeros on both sides of the passband and improved the sideband suppression. A interdigital bandpass filter with center frequency 2.3 GHz and bandwidth 200 M was designed, the insertion loss was less than 2.5 dB, passband fluctuation was better than 0.5 dB, HFSS was used to construct the 3D model and optimize the simulated results, then fa-bricated the filter with LTCC technology, the size was only 3 mm × 2 mm × 1.5 mm, the measured curves confirmed well with the simulated curves, verified the validity of the design.

References

[1]  甘本袯, 吴万春. 现代微波滤波器的结构与设计[M]. 北京: 科学出版社, 1972.
[2]  李雁, 戴永胜. 一种基于LTCC技术的UHF波段高性能带通滤波器[J]. 固体电子学研究与进展, 2014, 34(4): 367-380.
[3]  陈凯, 宋长宝, 杨景曙. 基于交指结构的可调带通滤波器的设计[J]. 微电子学, 2012, 42(3): 327-330.
[4]  岳义崴, 延波. X波段LTCC交指型滤波器[J]. 微波学报, 2014, 30(3): 135-137.
[5]  陈军, 朱晓维, 居万晨. X波段微带交叉耦合带通滤波器的设计[J]. 微波学报, 2014, 30(2): 54-57.
[6]  Yasushi, H. (2008) Super-Compact Planar Ultra-Wideband (UWB) Bandpass Filter Composed of Capacitor-Loaded E-Shaped Electrodes. European Microwave Conference, 361-364.
[7]  乔冬春, 戴永胜. 高性能电容加载 LTCC 带通滤波器的研究[J]. 电子元件与材料, 2015, 34(12): 68-71.
[8]  田增山, 王福江, 曾康健, 等. LTE频段平行耦合微带线带通滤波器设计[J]. 电子元件与材料, 2015, 34(3): 33-37.
[9]  杨虹, 陈静, 刘云龙, 杨浩澜. 一种基于多模谐振器的超宽带带通滤波器设计[J]. 电子元件与材料, 2015(34): 61- 65.
[10]  魏峰, 黄丘林, 史小卫, 等. 一种新型超宽带带通滤波器的设计与实现[J]. 微波学报, 2010(26): 48-51.
[11]  程兴, 苏涛, 梁昌洪. 交叉耦合滤波器设计与传输零点的独立性分析[J]. 微波学报, 2006, 22(1): 34-38.
[12]  陈世勇, 雷剑梅, 胡旭, 等. 一种具有传输零点的Hairpin带通滤波器设计[J]. 电路与系统学报, 2005, 10(4): 145- 147.

Full-Text

comments powered by Disqus