Cross-Coupled Line Bandpass Filter Based on Modified Parallel-Coupled Line Structure
Fajri Darwis (1*), Enjel Al Birr Rahayu (2), Sutrisno Sutrisno (3), Hanny Madiawati (4), Taufiqqurrachman Taufiqqurrachman (5), Arie Setiawan (6), Erry Dwi Kurniawan (7), Yusuf Nur Wijayanto (8) (1) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia - [ https://www.scopus.com/authid/detail.uri?authorId=56586031900 ]
(2) Departement Electrical Electronic Engineering, Polytechnic State of Bandung - Indonesia
(3) Departement Electrical Electronic Engineering, Polytechnic State of Bandung - Indonesia
(4) Departement Electrical Electronic Engineering, Polytechnic State of Bandung - Indonesia
(5) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia
(6) Graduate School of Engineering, Mie University - Japan
(7) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia
(8) Research Center for Telecommunication, National Research and Innovation Agency - Indonesia
(*) Corresponding Author
Received: April 11, 2022; Revised: June 06, 2022
Accepted: June 14, 2022; Published: August 31, 2022
Abstract
This paper presents a study of a narrow bandwidth of the bandpass filter with a cross-coupled line structure. This structure was designed to have a good filter selectivity with the transmission zeros and a simple design. Since the structure has a cross shape, cross-coupling between the resonators consequently occurs. This interferes with the passband of the filter. Optimization in the size of the coupled lines and transmission lines was done to minimize the interference. Rogers RT/duroid 5880 was used as a substrate to fabricate the bandpass filter to verify the proposed design. As a result, the fabricated cross-coupled line bandpass filter has an 80 MHz of 3 dB bandwidth with operating frequency ranges from 2.97 GHz to 3.05 GHz. The bandwidth is reduced by 20 % from the specification.It shows that the cross-coupled line structure can yield a narrow bandwidth. Based on the 3 dB bandwidth, the center frequency is shifted 0.33 % above the specification. Meanwhile, the return loss and insertion loss of the proposed bandpass filter successfully comply with the required specifications. In conclusion, the proposed bandpass filter can be applied to S-Band applications that require narrow bandwidth.
http://dx.doi.org/10.55981/jet.474 Keywords
References
D.-S. La, X. Guan, H.-C. Li, Y.-Y. Li, J.-W. Guo, “Design of broadband band-pass filter with cross-coupled line structure,” International Journal of Antennas and Propagation, vol. 2020, Art. No. 5257325, pp. 1–5, Jul. 2020. Crossref
T. Firmansyah, M. Alaydrus, Y. Wahyu, E. T. Rahardjo and G. Wibisono, “A highly independent multiband bandpass filter using a multi-coupled line stub-SIR with folding structure,” IEEE Access, vol. 8, pp. 83009–83026, Apr. 2020. Crossref
E. G. Sahin, A. K. Gorur, C. Karpuz and A. Gorur, “Design of wideband bandpass filters using parallel-coupled asymmetric three line structures with adjustment elements,” in Proc. EuMC’19, 2019, pp. 464–467. Crossref
P. Vryonides, S. Arain, A. Quddious and S. Nikolaou, “Open-/short- circuited coupled-line structures for the design of high-selectivity bandpass filter,” in Proc. EuMC’20, 2021, pp. 128–131. Crossref
K.-D. Xu, D. Li and Y. Liu, “High-selectivity wideband bandpass filter using simple coupled lines with multiple transmission poles and zeros,” IEEE Microw. Wirel. Compon. Lett., vol. 29, no. 2, pp. 107–109, Feb. 2019. Crossref
T. Djeddi, M. Elsaadany, S. Shams, and W. Hamouda, “Compact ultra-wideband printed bandpass filter based on coupled-line resonator loading,” in ANTEM’18, 2018, pp. 1–2. Crossref
T.K. Das, and S. Chatterjee, “Spurious harmonic suppression in a folded parallel-coupled microstrip bandpass filter by using triangular corrugations,” in Proc. DevIC’17, 2017, pp. 391–395. Crossref
M. N. Hushim, N. A. Wahab, T. S. A. T. M. Zin, and N. Ghazali, “Interconnected coupled lines resonator topology for bandpass filter application,” Int. J. Electr. Comput. Eng., vol. 10, no. 3, pp. 2523–2534, 2020. Crossref
W. Nie, Z. C. Han, Y. H. Wang, L. B. Xie, and M. Zhou, “Novel dual-band bandpass filters using short-circuited coupled-line resonator,” in Proc. IMWS-AMP’20, 2020, pp. 1–3. Crossref
R. Camdoo, S. M. Lau and H. T. Su, “Compact cross-coupled half-mode substrate integrated waveguide bandpass filter,” in Proc. APMC’17, 2017, pp. 706–709. Crossref
N. N. Al-Areqi, N. Seman, and T. A. Rahman, “Parallel-coupled line bandpass filter design using different substrates for fifth generation wireless communication applications,” in Proc. ISAP’15, 2015, pp. 1–4.
F. Darwis, A. Setiawan and P. Daud, “Performance of narrowband hairpin bandpass filter square resonator with folded coupled line,” in Proc. ISITIA’16, 2016, pp. 291–294. Crossref
N. Ismail, S. M. Ulfah, I. Lindra, A. S. Awalluddin, I. Nuraida, and M. A. Ramdhani, “Microstrip hairpin bandpass filter for radar S-Band with dumbbell-DGS,” in Proc. ICWT’19, 2019, pp. 1–4. Crossref
A. Özkan, and B. Saka, “S-Band voltage tunable microstrip combline filter design,” in Proc. EMC Turkiye’19, 2019, pp. 1–3. Crossref
M. S. Anwar and H. R. Dhanyal, "Design of S-band combline coaxial cavity bandpass filter," in ProcIBCAST’18, 2018, pp. 866–869. Crossref
N. V. Ivanov and A. S. Korotkov, “S-Band microstrip bandpass filter design based on new approach to coupling coefficients calculation,” in Proc. EexPolytech’18, 2018, pp. 60–63. Crossref
T. Praludi, Y. Sulaeman, Y. Taryana, and B.E. Sukoco, “Bandpass filter microstrip using octagonal shape for S-band radar,” in Proc. ICRAMET’17, 2017, pp. 145–148. Crossref
R. A. Maulidini, M. Hidayat, and T. Praludi, “Band-pass filter microstrip at 3 GHz frequency using square open-loop resonator for S-Band radar applications,” Jurnal Elektronika dan Telekomunikasi, vol. 20, no. 2, pp. 53–59, Dec. 2020. Crossref
A. Munir, H. Muhaimin, M.S. Arifianto, Chairunnisa, M.R. Effendi, and A.B. Suksmono, “Wideband BPF composed of planar inverted-F shaped for S-band frequency application,” in Proc. QiR’17, 2017, pp. 79–82. Crossref
G.L. Matthaei, L. Young, and E.M.T. Jones, Microwave Filters, Impedance-Matching Network, And Coupling Structures, Nort Bergen, NJ, USA: BookMart Press, 1985.
J.-S. Hong, and M.J. Lancester, Microstrip Filters for RF/Microwave Applications, 2nd ed., USA: John Wiley & Sons, 2011.
Article Metrics
Metrics powered by PLOS ALM
Refbacks
- There are currently no refbacks.
Copyright (c) 2022 National Research and Innovation Agency
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Email this article 
