low-pass filters;
microstrip filters;
fractals;
SEE VOL. 57;
DESIGN;
D O I:
10.1002/mop.27158
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:
Multiple Hilbert fractal lines with short circuits placed at specific positions are used to design two types of very compact planar low-pass filters with high rate of cutoff. A simple design procedure is fractals shown, based on estimation of quasi-lumped elements formed by the fractal line. Fabricated filters compare favorably with recently published filters, both in terms of size and performances. (c) 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2577-2581, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27158