Lowpass filter with sharp roll-off and wide stopband using LTCC technology

被引:0
|
作者
Zhou, C. X. [1 ]
Guo, Y. X. [2 ]
Wu, W. [1 ]
机构
[1] Nanjing Univ Sci & Technol, Ministerial Key Lab JGMT, Nanjing, Jiangsu, Peoples R China
[2] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore, Singapore
关键词
Lowpass filter; stripline; coupled lines;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A compact lowpass filter (LPF) with both sharp roll-off and wide stopband is presented in this paper. The proposed LPF is realized by cascading modified hairpin unit consisting of one U-shape stripline and one pair of offset-coupled striplines with multilayer low-temperature co-fired ceramic (LTCC) technology. By controlling the relatively positions vertically and horizontally of the offset-coupled striplines, we can get the tunable even-mode and odd-mode impedances of coupled lines in wide range. Measured results indicate that the designed filter has an ultra-wide stopband rejection better than 10 dB up to 20 GHz and a sharp roll-off of 81 dB/GHz. Furthermore, the size of the filter is only 4.54 x 3.37 mm(2).
引用
收藏
页码:468 / 470
页数:3
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