Hostname: page-component-76fb5796d-skm99 Total loading time: 0 Render date: 2024-04-25T11:04:11.668Z Has data issue: false hasContentIssue false
  • English
  • Français

Compact bandpass filter with wide-stopband using substrate integrated waveguide cavities and short-circuited coplanar line

Published online by Cambridge University Press:  26 November 2019

Amit Ranjan Azad Open the ORCID record for Amit Ranjan Azad [Opens in a new window]  and
Akhilesh Mohan Open the ORCID record for Akhilesh Mohan [Opens in a new window]
Amit Ranjan Azad*
Affiliation:
Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana – 500078, India
Akhilesh Mohan
Affiliation:
Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, West Bengal – 721302, India
*
Author for correspondence: Amit Ranjan Azad, E-mail: amitranjanazad@gmail.com
Get access Rights & Permissions [Opens in a new window]

Abstract

This article presented a compact bandpass filter with wide-stopband performance. Two substrate integrated waveguide (SIW) cavities and a short-circuited coplanar line introduced between the two cavities are used to realize a compact third-order bandpass filter. The passband is generated by combining the resonant frequency of TE101 mode of the SIW cavities and the fundamental resonant frequency of the short-circuited coplanar line. The size of the proposed filter reduces significantly in comparison with conventional third-order SIW filters. Moreover, the center frequency (CF) and the bandwidth of the filter can be controlled by adjusting the structural parameters of the filter. In addition, the first higher-order mode TE102 of the SIW cavity is suppressed by minimizing the coupling of TE102 mode in order to obtain wide-stopband performance. The proposed filter is designed, fabricated, and measured, and the simulation and measurement results show a good agreement. The filter exhibits compact size, low loss, and a rejection higher than 20 dB up to 1.94f0.

Keywords

Bandpass filtercompact sizeshort-circuited coplanar linesubstrate integrated waveguidewidebandwide-stopband
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Issue 5 , June 2020 , pp. 345 - 351
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Deslandes, D and Wu, K (2001) Integrated microstrip and rectangular waveguide in planar form. IEEE Microwave and Wireless Components Letters 11, 68–70.CrossRefGoogle Scholar
2.Lee, B, Lee, T-H, Lee, K, Uhm, M-S and Lee, J (2015) K-band substrate-integrated waveguide resonator filter with suppressed higher-order mode. IEEE Microwave and Wireless Components Letters 25, 367–369.CrossRefGoogle Scholar
3.Jia, D, Feng, Q, Xiang, Q and Wu, K (2016) Multilayer substrate integrated waveguide (SIW) filters with higher-order mode suppression. IEEE Microwave and Wireless Components Letters 26, 678–680.CrossRefGoogle Scholar
4.Chen, X-P, Wu, K and Drolet, D (2009) Substrate integrated waveguide filter with improved stopband performance for satellite ground terminal. IEEE Transactions on Microwave Theory and Techniques 57, 674–683.CrossRefGoogle Scholar
5.Zhu, F, Hong, W, Chen, J-X and Wu, K (2012) Cross-coupled substrate integrated waveguide filters with improved stopband performance. IEEE Microwave and Wireless Components Letters 22, 633–635.CrossRefGoogle Scholar
6.Zhu, F, Hong, W, Chen, J-X and Wu, K (2013) Wide stopband substrate integrated waveguide filter using corner cavities. Electronics Letters 49, 50–52.CrossRefGoogle Scholar
7.Zhou, K, Zhou, C-X and Wu, W (2017) Resonance characteristics of substrate-integrated rectangular cavity and their applications to dual-band and wide-stopband bandpass filters design. IEEE Transactions on Microwave Theory and Techniques 65, 1511–1524.CrossRefGoogle Scholar
8.Shen, W (2018) Extended-doublet half-mode substrate integrated waveguide bandpass filter with wide stopband. IEEE Microwave and Wireless Components Letters 28, 305–307.CrossRefGoogle Scholar
9.He, Z, You, CJ, Leng, S, Li, X and Huang, Y-M (2017) Compact bandpass filter with high selectivity using quarter-mode substrate integrated waveguide and coplanar waveguide. IEEE Microwave and Wireless Components Letters 27, 809–811.CrossRefGoogle Scholar
10.Li, L, Wu, Z, Yang, K, Lai, X and Lei, Z (2018) A novel miniature single-layer eighth-mode SIW filter with improved out-of-band rejection. IEEE Microwave and Wireless Components Letters 28, 407–409.CrossRefGoogle Scholar
11.Azad, AR and Mohan, A (2018) Sixteenth-mode substrate integrated waveguide cavity filters. International Journal of RF and Microwave Computer-Aided Engineering 28, 1–8.CrossRefGoogle Scholar
12.Shen, W, Yin, W-Y, Sun, X-W and Wu, L-S (2013) Substrate-integrated waveguide bandpass filters with planar resonators for system-on-package. IEEE Transactions on Components, Packaging and Manufacturing Technology 3, 253–261.CrossRefGoogle Scholar
13.Chu, P, Hong, W, Dai, L, Tang, H, Chen, J, Hao, ZC, Zhu, X and Wu, K (2014) A planar bandpass filter implemented with a hybrid structure of substrate integrated waveguide and coplanar waveguide. IEEE Transactions on Microwave Theory and Techniques 62, 266–274.CrossRefGoogle Scholar
14.Shen, W, Yin, W-Y, Sun, X-W and Mao, J-F (2010) Compact coplanar waveguide-incorporated substrate integrated waveguide (SIW) filter. Journal of Electromagnetic Waves and Applications 24, 871–879.CrossRefGoogle Scholar
15.Azad, AR and Mohan, A (2018) Substrate integrated waveguide dual-band and wide-stopband bandpass filters. IEEE Microwave and Wireless Components Letters 28, 660–662.CrossRefGoogle Scholar
16.Hong, J-S and Lancaster, MJ (2001) Microstrip Filters for RF/Microwave Applications. New York: John Wiley and Sons, pp. 235–272.CrossRefGoogle Scholar