Progress In Electromagnetics Research B
ISSN: 1937-6472
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 87 > pp. 39-60


By Y. P. Lim, S. Cheab, S. Soeung, and P. W. Wong

Full Article PDF (1,300 KB)

In this paper, we present the design and fabrication of a novel class of emerging waveguide filters based on chained-functions at the millimeter-wave band. The derivation of chained-functions by chaining of prescribed generalized Chebyshev seed functions based on the partition theory is presented in details, and the implementation to waveguide technology is proposed and evaluated. The waveguide filter is fabricated through two different technologies, namely the Computer Numerical Control (CNC) milling technology and the Direct Metal Laser Sintering (DMLS) based additive manufacturing technology. The chained-function filters, which lie in between the Butterworth and Chebyshev filters, inherit the salient properties of both Butterworth and Chebyshev filters. Therefore, the chained-function waveguide filter exhibits filtering responses that have a superior rejection property and a lower loss with reduced sensitivity to fabrication tolerance than the standard Chebyshev waveguide filter. The efficiency of the proposed waveguide filter is confirmed both theoretically and empirically, using the CNC and DMLS processes. The issues of a higher manufacturing tolerance and apparent surface roughness associated with the DMLS method are found to be electrically insignificant when the chained-function concept is adopted in waveguide filter design. In general, the measured results of all the realized waveguide filters agree well to those of the simulation models. These results positively demonstrate that the chained-function concept has robust properties for rapid, high-performance, low-cost, and sustainable filter design and implementation, particularly for higher millimeter-wave frequency bands and for narrow-band applications.

Y. P. Lim, S. Cheab, S. Soeung, and P. W. Wong, "On the Design and Fabrication of Chained-Function Waveguide Filters with Reduced Fabrication Sensitivity Using CNC and DMLS," Progress In Electromagnetics Research B, Vol. 87, 39-60, 2020.

1. Chrisostomidis, C. E. and S. Lucyszyn, "Seed function combination selection for chained function filters," IET Microwaves, Antennas Propag., Vol. 4, No. 6, 799-807, 2010.

2. Chrisostomidis, C. E. and S. Lucyszyn, "On the theory of chained-function filters," IEEE Trans. Microw. Theory Tech., Vol. 53, No. 10, 3142-3151, 2005.

3. Guglielmi, M. and G. Connor, "Chained function filters," IEEE Microw. Guid. Wave Lett., Vol. 7, No. 12, 390-392, 1997.

4. Chrisostomidis, C. E., M. Guglielmi, P. Young, and S. Lucyszyn, "Application of chained functions to low-cost microwave band-pass filters using standard PCB etching techniques," 2000 30th European Microwave Conference, 1-4, 2000.

5. Hunter, I., Theory and Design of Microwave Filters, 368 pages, The Institution of Engineering and Technology, 2001.

6. Cameron, R. J., "General coupling matrix synthesis methods for Chebyshev filtering functions," IEEE Trans. Microw. Theory Tech., Vol. 47, No. 4, 433-442, 1999.

7. Lim, Y. P., Y. L. Toh, S. Cheab, S. Lucyszyn, and P. W. Wong, "Coupling matrix synthesis and design of a chained-function waveguide filter," 2018 Asia-Pacific Microwave Conference (APMC), 103-105, 2018.

8. Cameron, R. J., "Advanced coupling matrix synthesis techniques for microwave filters," IEEE Trans. Microw. Theory Tech., Vol. 51, No. 1, 1-10, 2003.

9. Cameron, R. J., C. M. Kudsia, and R. R. Mansour, Microwave Filters for Communication Systems, Chapters 1–30, Wiley-Interscience, 2018.

10. Muller, A. A., J. Favennec, and E. Sanabria-Codesal, "Coupling matrix filter synthesis based on reflection matrices," 2015 Asia-Pacific Microwave Conference (APMC), Vol. 1, 1-3, 2015.

11. Muller, A. A., A. Moldoveanu, V. Asavei, E. Sanabria-Codesal, and J. F. Favennec, "Lossy coupling matrix filter synthesis based on hyperbolic reflections," 2016 IEEE MTT-S International Microwave Symposium (IMS), 1-4, 2016.

12. Leal-Sevillano, C. A., J. R. Montejo-Garai, J. A. Ruiz-Cruz, and J. M. Rebollar, "Low-loss elliptical response filter at 100 GHz," IEEE Microw. Wirel. Components Lett., Vol. 22, No. 9, 459-461, 2012.

13. Liao, X., L. Wan, Y. Yin, and Y. Zhang, "W-band low-loss bandpass filter using rectangular resonant cavities," IET Microwaves, Antennas Propag., Vol. 8, No. 15, 1440-1444, 2014.

14. Leal-Sevillano, C. A., T. J. Reck, G. Chattopadhyay, J. A. Ruiz-Cruz, J. R. Montejo-Garai, and J. M. Rebollar, "Development of a wideband compact orthomode transducer for the 180–270 GHz band," IEEE Trans. Terahertz Sci. Technol., Vol. 4, No. 5, 634-636, 2014.

15. Zhuang, J.-X., W. Hong, and Z.-C. Hao, "Design and analysis of a terahertz bandpass filter," 2015 IEEE International Wireless Symposium (IWS 2015), 1-4, 2015.

16. Shang, X., et al., "W-band waveguide filters fabricated by laser micromachining and 3-D printing," IEEE Trans. Microw. Theory Tech., Vol. 64, No. 8, 2572-2580, 2016.

17. Vanin, F. M., D. Schmitt, and R. Levy, "Dimensional synthesis for wide-band waveguide filters and diplexers," IEEE Trans. Microw. Theory Tech., Vol. 52, No. 11, 2488-2495, 2004.

18., “ANSOFT HFSS,” ANSYS Electromagnetic Suite 18.0, SAS IP, Inc., US, 2013.

19. Damou, M., K. Nouri, M. Feham, and M. Chetioui, "Design and optimization of rectangular waveguide filter based on direct coupled resonators," Int. J. Electron. Telecommun., Vol. 63, No. 4, 375-380, 2017.

20. Shang, X., W. Xia, and M. J. Lancaster, "The design of waveguide filters based on cross-coupled resonators," Microwave and Optical Technology Letters, Vol. 56, No. 1, 3-8, 2014.

21. Chieh, J. S., M. Civerolo, and A. Clawson, "A ultra wideband radial combiner for X/Ku-band using CNC and DMLS processes," IEEE Microw. Wirel. Components Lett., Vol. 25, No. 5, 286-288, 2015.

© Copyright 2010 EMW Publishing. All Rights Reserved