| BNKLT无铅压电陶瓷梯形中频带通滤波器的研制 |
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| 引用本文： | 李灵芝,肖定全,赁敦敏,朱建国,余萍.BNKLT无铅压电陶瓷梯形中频带通滤波器的研制[J].压电与声光,2007,29(1):36-37,41. |
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| 作者姓名： | 李灵芝 肖定全 赁敦敏 朱建国 余萍 |
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| 作者单位： | 四川大学,材料科学系,四川,成都,610064 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;国家高技术研究发展计划(863计划);高等学校博士学科点专项科研项目 |
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| 摘 要： | 利用发明的Bi0.5(Na1-x-yKxLiy)0.5]TiO3(BNKLT)系无铅压电陶瓷,采用全电极径向振动模式制作了插入损耗小于6 dB,阻带损耗大于30 dB,频率特性曲线平滑,并具有良好选择性的中频(IF=460 kHz)多节带通滤波器。与含铅压电陶瓷多节滤波器相比,BNKLT无铅压电陶瓷滤波器的特性有待进一步改进。
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| 关 键 词： | 无铅压电陶瓷 全电极径向振动模式 梯形带通滤波器 插入损耗 |
| 文章编号： | 1004-2474（2007）01-0036-02 |
| 修稿时间： | 2005-07-08 |
Fabrication of Ladder Middle Frequency Passband Filte Using BNKLT Lead-free Piezoelectric Ceramics |
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| LI Ling-zhi,XIAO Ding-quan,LIN Dun-min,ZHU Jian-guo,YU Ping.Fabrication of Ladder Middle Frequency Passband Filte Using BNKLT Lead-free Piezoelectric Ceramics[J].Piezoelectrics & Acoustooptics,2007,29(1):36-37,41. |
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| Authors: | LI Ling-zhi XIAO Ding-quan LIN Dun-min ZHU Jian-guo YU Ping |
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| Affiliation: | Dept. of Materials Science, Sichuan University, Chengdu 610064, China |
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| Abstract: | BNKLT lead-free piezoelectric ceramics invented were used for making ladder middle frequency passband ceramic filters.Using the full electrode radial vibration mode of the resonance samples,the BNKLT system is fabricated into the multi-section ladder passband filter.The passband filter has good choose character with the curve smooth and the loss insertion no more than 6 dB and the out-band attenuation more than 30 dB.The center frequency is about 460 kHz.Compared with the lead-based multi-section filter,the out-band attenuation of the BNKLT lead-free filter needs to be further improved. |
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| Keywords: | BNKLT |
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