CSRR TİPİ META-REZONATÖRLERİ DEĞİŞTİREREK DALGA KILAVUZU FİLTRESİNİN ÇALIŞMA FREKANS BANDININ KAYDIRILMASI

Abstract

Bu çalışmada, rezonans frekansları 5,5 GHz, 6 GHz ve 6,5 GHz olan bant geçiren dalga kılavuzu filtreler simüle edilmiş ve CNC frezeleme yöntemi ile üretilmiştir. Ardından, simüle edilen ve ölçülen performans parametreleri elde edilmiş ve 1. dereceden 7. dereceye kadar filtrelerin performansları karşılaştırılmıştır. Tek bir WR-159 dalga kılavuzu yapısı kullanılarak, dalga kılavuzuna yerleştirilen CSRR tipi meta-rezonatörler değiştirilerek çalışma frekans bandı kolayca kaydırılabilir. Böylece, aynı dalga kılavuzu yapısı farklı frekans bandı bölgelerinde filtre olarak kullanılabilir. Ölçülen ekleme kaybı (IL) değerlerinin, sırasıyla 5,5 GHz, 6 GHz ve 6,5 GHz rezonans frekanslarında dalga kılavuzu filtreleri (WGF) için 0,3-1,88 dB, 0,06-0,49 dB ve 0,43-2,24 dB aralıklarında olduğu bulunmuştur. Simüle edilen ve ölçülen rezonans frekansları, tüm filtre dereceleri için birbiriyle iyi bir uyum göstermektedir ve bu değerler, bu çalışmada önerilen filtrelerin birçok uygulamada kullanılabilmesi için yeterlidir.

Keywords

• CNC Frezeleme
• CSRR
• Meta-Rezonatör
• Frekans Bandı Kaydırma
• Dalga Kılavuzu Filtre

Project Number

123E108

SHIFTING THE OPERATING FREQUENCY BAND OF THE WAVEGUIDE FILTER BY CHANGING CSRR TYPE META RESONATORS IN THE SINGLE WAVEGUIDE

Abstract

In this study, bandpass waveguide filters with resonant frequencies of 5.5 GHz, 6 GHz, and 6.5 GHz are simulated and fabricated by Computer Numerical Control (CNC) milling method. Then, the simulated and measured performance parameters are obtained and compared from 1st order to 7th filter order. By using the same WR-159 waveguide structure, the operating frequency band can be easily shifted by changing only Complementary Split Ring Resonator (CSRR)-type meta-resonators placed in the waveguide, so that the same waveguide structure can be used as a filter in different frequency band regions. The measured insertion loss (IL) values are found to be within the intervals of 0.3-1.88 dB, 0.06-0.49 dB, and 0.43-2.24 dB for the waveguide filters (WGF) at resonance frequencies of 5.5 GHz, 6 GHz, and 6.5 GHz, respectively. Simulated and measured resonance frequencies have good agreement with each other for all filter orders and these values are sufficient to use the filters proposed in this study in many applications.

Keywords

• CNC Milling
• CSRR
• Frequency Band Shifting
• Meta-resonator
• Waveguide Filter

Supporting Institution

TUBİTAK

Project Number

123E108

Thanks

This study is carried out within the scope of the project numbered 123E108 supported by TUBITAK (The Scientific and Technological Research Council of Turkey.

References

1. AbuHussain, M., Hasar, U. C., 2020. Design of X-Bandpass Waveguide Chebyshev Filter Based on CSRR Metamaterial for Telecommunication Systems. Electronics, 9 (1), 101.
2. Bage, A., 2024. E-Plane dual band bandstop waveguide filter for possible X-band applications. International Journal of Electronics Letters, 12 (3), 295–303.
3. Bage, A., Das, S., 2017. Stopband Performance Improvement of CSRR-Loaded Waveguide Bandpass Filters Using Asymmetric Slot Structures. IEEE Microw. Wireless Compon. Lett., 27 (8), 697–699. Bod, M., Hatefi Ardakani, H., 2018. A dual‐mode waveguide filter based on stereometamaterial CSRR resonator. Micro and Optical Tech Letters, 60 (12), 3003–3006.
4. Dogan, H., Genc, A., Abdo, A. N. A., Bicer, S., and Helhel, S. (2025). A novel modular CSRR-based SLA 3D printed waveguide filter for c-band radar applications: Suitable for various substrate thicknesses. International Journal of Microwave and Wireless Technologies, 17(10), 1749-1762.
5. Genc, A., and Dogan, H. (2025). Novel multi-functional and compact waveguide filter based on various meta-resonators for C-band applications. Engineering Science and Technology, an International Journal, 72, 102213.
6. Genç, A., Başyi̇ğit, B., Göksu, T., Helhel, S., 2018. Farklı Güç Oranları için Dikdörtgen Dalga Kılavuzu Güç Bölücülerinin Karakteristiklerinin İncelenmesi. Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi, 33 (1), 261–270.
7. Genc, A., Basyigit, I. B., Goksu, T., Helhel, S., 2017. Investigation of the performances of X-Ku band 3D printing pyramidal horn antennas coated with the different metals. 10th International Conference on Electrical and Electronics Engineering (ELECO), Bursa, 1012-1016.
8. Genç, A., Göksu, T., Helhel, S., 2018. 3D baskı ve bakır kaplama ile üretilen dalga kılavuzu dönüş elemanlarının performanslarının incelenmesi. Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi, 2018, Nisan 2018.

9. Genc, A., Goksu, T., Helhel, S., 2018. Fabrication of three‐dimensional printed rectangular waveguide T‐junction with in‐phase and equal power division. Micro & Optical Tech Letters, 60 (8), 2043–2048.
10. Genç, İ., Gözel, M. A., and Kahriman, M., 2025. Microwave sensor design with directional coupler-based CSRR structure for the characterization of the dielectric properties of solid materials. Measurement, 119548.
11. Gözel, F. N., Gözel, M. A., and Kahri̇Man, M. (2022). Varikap diyot kullanarak 700 mhz-1800 mhz frekans aralığında çalışan adaptif bant geçiren filtre tasarımı. International Journal of Innovative Engineering Applications, 6(1), 1-6. https://doi.org/10.46460/ijiea.1007567
12. Jin, J. Y., Lin, X. Q., Jiang, Y., Xue, Q., 2015. A Novel Compact E-Plane Waveguide Filter with Multiple Transmission Zeroes. IEEE Trans. Microwave Theory Techn., 63 (10), 3374–3380.
13. Kahriman, M., Coşkun, Ö., and Gözel, M. A. (2026). Geometric parameter tuning for bandwidth and filtering control in wideband directional coupler. Scientific Journal of Mehmet Akif Ersoy University, 9(1), 1-12. https://doi.org/10.70030/sjmakeu.1838079
14. Kelleci, C., Atalar, A., 2017. An Analytical Approach to the Design of Multiple Mode Rectangular Cavity Waveguide Filters. IEEE Trans. Microwave Theory Techn., 65 (8), 2857–2865.
15. Latif, M., Macchiarella, G., Mukhtar, F., 2020. A Novel Coupling Structure for Inline Realization of Cross-Coupled Rectangular Waveguide Filters. IEEE Access, 8, 107527–107538.
16. Li, M., He, W., Zheng, Q., Yang, X., Yi, Z., 2023. A narrow‐band overmoded rectangular waveguide filter for high‐power microwaves (HPMs). Micro & Optical Tech Letters, 65 (9), 2500–2506.
17. Mrvić, M. V., Potrebić, M. M., Tošić, D. V., 2017. Compact H-plane dual-band bandstop waveguide filter. J Comput Electron, 16 (3), 939–951.
18. Mrvic, M., Stefanovski-Pajovic, S., Potrebic, M., Tosic, D., 2017. Design of microwave waveguide filters with effects of fabrication imperfections. Facta Univ Electron Energ, 30 (4), 431–458.
19. Nimehvari Varcheh, H., Rezaei, P., 2022. Low‐loss X‐band waveguide bandpass filter based on rectangular resonators. Micro & Optical Tech Letters, 64 (4), 701-706.
20. Sorocki, J., et al., 2024. Low-Cost Method for Internal Surface Roughness Reduction of Additively Manufactured All-Metal Waveguide Components. IEEE Transactions on Microwave Theory and Techniques, 72 (8), 4519-4529.
21. Urul, B., Doğan, H., Başyi̇ğit, I. B., Genç, A., 2022. A novel broadband double-ring holed element metasurface absorber to suppress EMI from PCB heatsinks. Turkish Journal of Electrical Engineering and Computer Sciences, 30 (6), 2254–2267.