High-Performance Low-Pass Filter Using Stepped Impedance Resonator and Defected Ground Structure

被引：6
|
作者：
Zhang, Jin [1 ,2 ,3 ]
Yang, Ruosong [2 ]
Zhang, Chen [2 ]
机构：
[1] Jinling Inst Technol, Sch Elect & Informat Engn, Nanjing 211169, Jiangsu, Peoples R China
[2] Natl & Local Joint Engn Lab RF Integrat & Microas, Nanjing 210023, Jiangsu, Peoples R China
[3] Southeast Univ, Sch Elect Engn, Nanjing 210096, Jiangsu, Peoples R China
来源：
ELECTRONICS | 2019年 / 8卷 / 04期
关键词：
low-pass filter (LPF); stepped impedance resonator (SIR); hairpin resonator; internal coupling; defected ground structure (DGS); DESIGN;
D O I：
10.3390/electronics8040403
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A microstrip low-pass filter (LPF) using reformative stepped impedance resonator (SIR) and defected ground structure (DGS) is proposed in this paper. The proposed filter not only possesses the advantage of high frequency selectivity of SIR hairpin LPF with internal coupling, but also possesses the large stop-band (SB) bandwidth by adjusting the number and area of DGS units. The LPF proposed in this paper possesses the properties of miniaturization, wide SB, high selectivity, and low pass-band ripple (PBR) simultaneously. The characteristic parameters of the proposed LPF is that: the pass-band (PB) is 0 similar to 2 GHz, the PBR is 0.5 dB, the SB range is from 2.4 GHz to 9 GHz when the attenuation is under 20 dB, and the maximal attenuation could reach 45 dB in the SB. The size of this proposed LPF is 0.13 l similar to 0.09 l; l is the corresponding wavelength of the upper PB edge frequency of 2 GHz.
引用
收藏
页数：12
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