A Simple UWB Microstrip Band-Pass Filter with an Ultra-Wide Stopband Using Parallel Coupled lines and Hairpin Resonators

Document Type : Research Paper

Authors

1 Department of Information and communications technology, Amin University, Tehran, Iran.

2 Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

Abstract

In this paper a simple ultra-wide band (UWB) microstrip band pass filter (BPF) with an ultra-wide stopband using novel dual hairpin resonators and parallel-coupled lines is proposed. The proposed filter has a wide pass band of 3.1 to 10.2 GHz with only 0.1 dB insertion loss. This wide pass band of 7.1 GHz, shows 106.7% fractional band width (FBW). The proposed BPF not only correctly operates at the ultra-wide pass band, but also provides an ultra-wide stopband from 12.8 to 28.2 GHz with more than 20 dB attenuation level. The proposed BPF has a very simple structure, which consists of four novel hairpin resonators and simple parallel-coupled lines. The proposed BPF has a compact size, which the overall circuit size of the device is only 11.7 mm × 7.2 mm (0.35 λ × 0.22 λ), where λ, is calculated at the center frequency of 6.65 GHz. The proposed device is simulated, fabricated and tested. The measured results confirm the correct performance of the proposed BPF.

Keywords

References

[1] D.S. La, X. Guan, M.Y. Wang, and R.Q. Mi, “Compact wideband bandpass filter based on coupled line stub with high selectivity,” AEU-International Journal of Electronics and Communications, vol. 138, no. 1, pp. 153872-153878, Aug. 2021.
[2] S.W. Lan, M.H. Weng, C.Y. Hung, and S.J. Chang, “Design of a compact ultra-wideband bandpass filter with an extremely broad stopband region,” IEEE Microwave and Wireless Components Letters. vol. 26, no. 6, pp. 392-394, May 2016.
[3] H.N. Shaman and J.S. Hong, “Compact wideband bandpass filter with high performance and harmonic suppression,” European Microwave Conference, Munich, Germany, pp. 528-531, Oct. 2007.
[4] J. Garcia-Garcia, J. Bonache, and F. Martin, “Application of electromagnetic bandgaps to the design of ultra-wide bandpass filters with good out-of-band performance,” IEEE Trans. Microwave Theory and Techniques. vol. 54, no. 12, pp. 4136-4140, Dec. 2006.
[5] A.N. Ghazali and S. Pal, “Microstrip based UWB filter with controllable multiple notches and extended upper stopband,” International Conference on Emerging Trends in Communication, Control, Signal Processing and Computing Applications (C2SPCA), Bangalore, India, pp. 1-5, Oct. 2013.
[6] M. Danaeian, F. Zarezadeh, M.H. Gholizadeh, A.R. Mozneb, and J. Khalilpour, “A compact and sharp rejection ultra-wideband bandpass filter based on short and open stub-loaded multiple mode resonators,” Journal of Electrical Engineering & Technology. vol. 15, no. 1, pp. 469-476, Jan. 2020.
[7] T.B. Lim, S. Sun, and L. Zhu, “Compact ultra-wideband bandpass filter using harmonic-suppressed multiple-mode resonator,” Electronics Letters, vol. 43, no. 22, pp. 1205-1206, Oct. 2007.
[8] C.Y. Hung, M.H. Weng, R.Y. Yang, and Y.K. Su, “Design of the compact parallel coupled wideband bandpass filter with very high selectivity and wide stopband,” IEEE Microwave and Wireless Components Letters, vol. 17, no. 7, pp. 510-512, July 2007.
[9] A.M. Abbosh, “Design method for ultra-wideband bandpass filter with wide stopband using parallel-coupled microstrip lines,” IEEE Trans. Microwave Theory and Techniques. vol. 60, no. 1, pp. 31-38, Nov. 2011.
[10] X.H. Wu and Q.X. Chu, “Compact differential ultra-wideband bandpass filter with common-mode suppression,” IEEE Microwave and Wireless Components Letters. vol. 22, no. 9, pp. 456-458, Aug. 2012.
[11] M. Jamsai, N. Angkawisittpan, and A. Nuan-On, “Design of a compact ultra-wideband bandpass filter using inductively compensated parallel-coupled lines,” Electronic,. vol. 10, no. 21, pp. 2575-2587, Oct. 2021.
[12] S. Roshani, S. Koziel, S. Roshani, F.S. HashemiMehr, and S. Szczepanski, “Design and implementation of a dual-band filtering Wilkinson power divider using coupled T-shaped dual-band resonators,” Energies, vol. 15, no. 3, pp. 1189-1201, Feb. 2022.
 [13] P. Rostami and S. Roshani, “A miniaturized dual band Wilkinson power divider using capacitor loaded transmission lines,” AEU-International Journal of Electronics and Communications, vol. 90, no. 1, pp. 63-68, June 2018.
[14] S. Roshani, S. Roshani, M.B. Jamshidi, M. Karimi, and N. Mahtabi, “A Dual Band Microstrip Branch Line Coupler with Harmonics Suppression Using LPF and Open-Ended Stubs,” 2021 Photonics and Electromagnetics Research Symposium (PIERS), IEEE Conf, Hangzhou, China, pp. 1597-1604, 2021 Nov. 2021.
[15] M.F. Haider, F. You, W. Shi, S. Ahmad, and T. Qi, “Broadband power amplifier using hairpin bandpass filter matching network,” Electronics Letters, vol. 56, no. 4, pp. 182-184, Feb. 2020.
[16] X. Qi, F. Xiao, “Filtering Power Amplifier With up to 4th Harmonic Suppression,” IEEE Access, vol. 8, no. 1, pp. 29021-29026, Feb. 2020.
[17] S.k. Bavandpour, S. Roshani, A. Pirasteh, S. Roshani, and H. Seyedi, “A compact lowpass-dual bandpass diplexer with high output ports isolation,” AEU-International Journal of Electronics and Communications. vol. 135, no. 1, pp. 1537-1548, June 2021. 
[18] Y. Rao, H.J. Qian, B. Yang, R . Gómez-García, and X. Luo, “Dual-band bandpass filter and filtering power divider with ultra-wide upper stopband using hybrid microstrip/DGS dual-resonance cells,” IEEE Access, vol. 8, no. 1, pp. 23624-23637, Jan. 2020.
[19] D.S. Jose, A.S. Kumar, and T. Shanmugantham, “A band pass coupled line filter with DGS for ultra-wide band application,” Procedia Computer Science, vol. 171, no. 1, pp. 561-567, Jan. 2020.
[20] S. Cao, Y. Han, H. Chen, and J. Li, “An ultra-wide stop-band LPF using asymmetric Pi-shaped Koch fractal DGS,” IEEE Access, vol. 5, no. 1, pp. 27126-27131, Nov. 2017.
[21] M.M. Hajamohideen and S.B. Suseela, “Compact multiple electromagnetic band gap (EBG) cells based ultra wide band (UWB) filter with improved stop-band characteristics,” Circuit World, vol. 48, no. 1, pp. 105-110, Jan. 2021.
[22] H. Chu, X.Q. Shi, and Y.X. Guo, “Ultra-wideband bandpass filter with a notch band using EBG array etched ground,” Journal of Electromagnetic Waves and Applications, vol. 25, no. 2, pp. 203-209, Jan. 2011. 
[23] G. Ramakrishnan and R. Sivakumar, “Miniaturised ultra‐wideband band‐pass filter using quasi-lumped symmetrical EBG,” The Journal of Engineering, vol. 11, no. 1, pp. 589-594, Nov. 2017.  
[24] S. Sun and L. Zhu, “Capacitive-ended interdigital coupled lines for UWB bandpass filters with improved out-of-band performances,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 8, pp. 440-442, July 2006.
[25] P. Cai, Z. Ma, X. Guan, X. Yang, Y. Kobayashi, T. Anada, and G. Hagiwara, “A compact UWB bandpass filter using two-section open-circuited stubs to realize transmission zeros,” 2005 Asia-Pacific Microwave Conference Proceedings IEEE conf, Suzhou, China, pp. 4-8, Dec. 2005.
[26] K. Li, D. Kurita, and T. Matsui, “A novel UWB bandpass filter and its application to UWB pulse generation,” 2005 IEEE International Conference on Ultra-Wideband, Zurich, Switzerland, pp. 446-451, Sep. 2005.
[27] T.N. Kuo, S.C. Lin, and C.H. Chen, “Compact ultra-wideband bandpass filters using composite microstrip–coplanar-waveguide structure,” IEEE Trans. Microwave Theory and Techniques. vol. 54, no. 10, pp. 3772-3778, Oct. 2006.
[28] P.K. Singh, S. Basu, and Y.H. Wang, “Planar ultra-wideband bandpass filter using edge coupled microstrip lines and stepped impedance open stub,” IEEE Microwave and Wireless Components Letters, vol. 17, no. 9, pp. 649-651, Aug. 2007.

Files

Share

How to cite

Statistics