Design of low-pass filter with 3-interations Koch fractal Pi-shaped DGS

doi:10.19682/j.cnki.1005-8885.2018.0017

中国邮电高校学报(英文版) ›› 2018, Vol. 25 ›› Issue (3): 92-96.doi: 10.19682/j.cnki.1005-8885.2018.0017

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Design of low-pass filter with 3-interations Koch fractal Pi-shaped DGS

韩宇南¹,袁思雨²,孙晓昱¹,梅超凡¹

1. 北京化工大学
2. 北京邮电大学

收稿日期:2018-02-28 修回日期:2018-05-23 出版日期:2018-06-29 发布日期:2018-06-30
通讯作者: 韩宇南 E-mail:clark-han@139.com
基金资助:
中国国家自然科学基金

Design of low-pass filter with 3-interations Koch fractal Pi-shaped DGS

Received:2018-02-28 Revised:2018-05-23 Online:2018-06-29 Published:2018-06-30
Contact: Yu-Nan HAN E-mail:clark-han@139.com
Supported by:
National Nature Science Foundation of China

摘要/Abstract

摘要： A novel asymmetrical Pi-shaped defected ground structure (DGS) with 3-interations Koch fractal curves is proposed to design a microstrip low-pass filter (LPF) with ultra-wide stop-band (SB). The proposed LPFs with a single resonator and two cascaded resonators are both designed, simulated, manufactured and measured. Simulation and experiment results demonstrate that the designed LPF has a very sharp transition band (TB) and an ultra-wide SB performance compared with the existed similar symmetrical and asymmetrical DGS. The proposed LPF with two cascaded resonators is with a compact size of 36.8 mm×24.0 mm, a very low insertion loss of less than 0.7 dB under 1.9 GHz, and a wide SB from 2.2 GHz to 8 GHz with rejection of larger than 30 dB.

关键词: low-pass ?lter, defected ground structure, Koch fractal curve, broad stop-band

Abstract: A novel asymmetrical Pi-shaped defected ground structure (DGS) with 3-interations Koch fractal curves is proposed to design a microstrip low-pass filter (LPF) with ultra-wide stop-band (SB). The proposed LPFs with a single resonator and two cascaded resonators are both designed, simulated, manufactured and measured. Simulation and experiment results demonstrate that the designed LPF has a very sharp transition band (TB) and an ultra-wide SB performance compared with the existed similar symmetrical and asymmetrical DGS. The proposed LPF with two cascaded resonators is with a compact size of 36.8 mm×24.0 mm, a very low insertion loss of less than 0.7 dB under 1.9 GHz, and a wide SB from 2.2 GHz to 8 GHz with rejection of larger than 30 dB.

Key words: low-pass ?lter, defected ground structure, Koch fractal curve, broad stop-band

中图分类号:

TN713.5

参考文献

1. La D S, Guo J W, Liu Y, et al. Compact parallel coupled line band-pass filter design with open stub. Journal of Beijing University of Posts and Telecommunications, 2017, 40 (2): 93–96(in Chinese).

2. Yao Y D, Zeng Z B. Design of a wideband common-mode filter using approximate closed-loop pattern of compact C-shaped defected ground structure. Journal of China Universities of Posts and Telecommunications, 2017, 24(3): 70–74.

3. Zhang H X, Zhang X D, He P F. Miniaturized dual-band bandpass filter using defected ground structure. Chinese Journal of Radio Science, 2016, 31(2): 363–367 (in Chinese).

4. Wen Z L, Han Y N, Sun X Y, et al. Design of miniaturized low-pass filter with improved Koch fractal DGS. Proceedings of the 5th International Symposium on Electromagnetic Compatibility (EMC-Beijing'17), Oct 28-31, 2017, Beijing, China. Piscataway, NJ, USA: IEEE, 2017: 4p.

5. Cao S H, Han Y N, Chen H, et al. An ultra-wide stop-band LPF using asymmetric Pi-shaped Koch fractal DGS. IEEE Access, 2017, 5: 27126–27131.

6. Kuo J T, Eric S. Microstrip stepped impedance resonator bandpass filter with an extended optimal rejection bandwidth. IEEE Transactions on Microwave Theory Technology, 2003, 5(5): 1554–1559.

7. Lee C H, Hsu C I G, Jhuang H K. Design of a new tri-band microstrip BPF using combined quarter-wavelength SIRs. IEEE Microwave Wireless Letters, 2006, 16(11): 594–596.

8. Kim C S, Park J S, Ahn D, et al. A novel 1-D periodic defected ground structure for planar circuits. IEEE Microwave Guided Wave Letters, 2000, 10(4): 131–133.

9. Kufa M, Raida Z. Lowpass filter with reduced fractal defected ground structure. Electronics Letters, 2013, 49(3): 199–201.

10. Ojaroudi N, Ojaroudi Y, Ojaroudi S. Novel design of UWB band-stop fiter (BSF) based on Koch fractal structures. Applied Computational Electromagnetics Society Journals, 2015, 30(1): 117–119.

11. de Dios Ruiz D, Martínez F L, Hinojosa J. 1D Koch fractal electromagnetic bandgap microstrip structure with r/a ratios higher than 0.5. Microwave and Optical Technology Letters, 2011, 53(3): 646–649.

12. Kumar A, Prajapati P R, Arya A, et al. Design studies on microstrip filter with Peano fractal defected ground structure. Proceedings of the 11th International Conference on Industrial and Information Systems (ICIIS’16), Dec 3-4, 2016, Roorkee, India, Piscataway, NJ, USA: IEEE, 2016: 576–581.

13. Han Y N, Yang B, Guo Q. Design of low-pass filters with ultra-wide stopband using novel asymmetric DGS. Proceedings of the 2013 IEEE International Symposium on Electromagnetic Compatibility (EMC’13), Aug 5-9 2013, Denver, Co, USA. Piscataway, NJ, USA: IEEE, 2013: 636–639 .

Design of low-pass filter with 3-interations Koch fractal Pi-shaped DGS

Design of low-pass filter with 3-interations Koch fractal Pi-shaped DGS

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