volume | PIER Journals

Abstract

A band-pass filter utilizing a dual-mode Substrate Integrated Waveguide (SIW) cavity, enhanced by a novel Defected Ground Structure (DGS) is proposed in this paper. The SIW cavity operates in TE₁₁₀ and TE₁₂₀ modes, and the electric field of TE₁₁₀ is modified by introducing a series of metallized disturbance holes at the center of SIW cavity to increase the resonant frequency of TE₁₁₀ mode to that of TE₁₂₀ mode, thereby forming a passband with two transmission poles. A DGS that combines a dumbbell structure with a Complementary Split Ring Resonator (CSRR) is employed on the ground plane of the filter to improve the stopband rejection and suppress the parasitic passband. EM simulation and measurement results suggest that the center frequency of the filter is 4.8 GHz. It achieves a 3 dB-bandwidth of 300 MHz, with its insertion loss in the passband up to 0.5 dB and return loss greater than 20 dB. The designed DGS introduces a transmission zero near 7.2 GHz to suppress the parasitic passband and enhance the selectivity of the filter, while maintaining the original insertion loss and return loss within the passband. Its overall layout is simple and innovative. The designed filter is specifically engineered for application in the receiver of Nonlinear Junction Detection (NLJD) systems, aiming to suppress interference signals and allow only the second harmonic to pass through, which holds certain practical significance in RF engineering.

1. Bozzi, Maurizio, Anthimos Georgiadis, and Kaijie Wu, "Review of substrate-integrated waveguide circuits and antennas," IET Microwaves, Antennas & Propagation, Vol. 5, No. 8, 909-920, 2011.

2. Chen, Xiao-Ping and Ke Wu, "Substrate integrated waveguide filters: Design techniques and structure innovations," IEEE Microwave Magazine, Vol. 15, No. 6, 121-133, 2014.

3. Nwajana, Augustine O. and Emenike Raymond Obi, "A review on SIW and its applications to microwave components," Electronics, Vol. 11, No. 7, 1160, 2022.

4. Jin, Cheng and Zhongxiang Shen, "Compact triple-mode filter based on quarter-mode substrate integrated waveguide," IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 1, 37-45, 2014.

5. Yang, Xian-Long, Xiao-Wei Zhu, and Xiang Wang, "Dual-band substrate integrated waveguide filters based on multi-mode resonator overlapping mode control," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 70, No. 6, 1971-1975, 2023.

6. Chu, Peng, Wei Hong, Mingguang Tuo, Kai-Lai Zheng, Wen-Wen Yang, Feng Xu, and Ke Wu, "Dual-mode substrate integrated waveguide filter with flexible response," IEEE Transactions on Microwave Theory and Techniques, Vol. 65, No. 3, 824-830, 2017.

7. Qiu, Liang-Feng, Lin-Sheng Wu, Bing Xie, Wen-Yan Yin, and Jun-Fa Mao, "Substrate integrated waveguide filter with flat passband based on complex couplings," IEEE Microwave and Wireless Components Letters, Vol. 28, No. 6, 494-496, 2018.

8. Khandelwal, Mukesh Kumar, Binod Kumar Kanaujia, and Sachin Kumar, "Defected ground structure: Fundamentals, analysis, and applications in modern wireless trends," International Journal of Antennas and Propagation, Vol. 2017, No. 1, 2018527, 2017.

9. Xu, Shanshan, Kaixue Ma, Fanyi Meng, and Kiat Seng Yeo, "Novel defected ground structure and two-side loading scheme for miniaturized dual-band SIW bandpass filter designs," IEEE Microwave and Wireless Components Letters, Vol. 25, No. 4, 217-219, 2015.

10. Kumar, Chandrakanta and Debatosh Guha, "Reduction in cross-polarized radiation of microstrip patches using geometry-independent resonant-type defected ground structure (DGS)," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 6, 2767-2772, 2015.

11. Wei, Kun, Jian-Ying Li, Ling Wang, Zi-Jian Xing, and Rui Xu, "Mutual coupling reduction by novel fractal defected ground structure bandgap filter," IEEE Transactions on Antennas and Propagation, Vol. 64, No. 10, 4328-4335, 2016.

12. Chen, Tianyi, Wenxuan Tang, Jing Mu, and Tie Jun Cui, "Microwave metamaterials," Annalen Der Physik, Vol. 531, No. 8, 1800445, 2019.

13. Xu, Hanyue, Ying Wang, Farhan A. Ghaffar, and Langis Roy, "Reconfigurable microwave filters implemented using field programmable microwave substrate," IEEE Transactions on Microwave Theory and Techniques, Vol. 69, No. 2, 1344-1354, 2021.

14. Yang, Cheng, Chu-Ming Guo, Jie Xu, and Hai-Feng Zhang, "Device design for multitask graphene electromagnetic detection based on second harmonic generation," IEEE Transactions on Microwave Theory and Techniques, Vol. 72, No. 7, 4174-4182, 2024.

15. Yang, Cheng, Chu-Ming Guo, Yu-Xin Wei, and Hai-Feng Zhang, "Electromagnetic detection design in liquid crystals janus metastructures based on second harmonic generation," IEEE Transactions on Instrumentation and Measurement, Vol. 73, 1-11, 2024.
doi:10.1109/JPROC.2024.3436513

16. Tomassoni, Cristiano, Lorenzo Silvestri, Maurizio Bozzi, and Luca Perregrini, "Substrate-integrated waveguide filters based on mushroom-shaped resonators," International Journal of Microwave and Wireless Technologies, Vol. 8, No. 4-5, 741-749, 2016.

17. Moscato, Stefano, Cristiano Tomassoni, Maurizio Bozzi, and Luca Perregrini, "Quarter-mode cavity filters in substrate integrated waveguide technology," IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 8, 2538-2547, 2016.

18. Chu, Peng, Wei Hong, Mingguang Tuo, Kai-Lai Zheng, Wen-Wen Yang, Feng Xu, and Ke Wu, "In-line ports dual-mode substrate integrated waveguide filter with flexible responses," IEEE Microwave and Wireless Components Letters, Vol. 28, No. 10, 882-884, 2018.

19. Chu, Peng, Peng Zhu, Jianguo Feng, Lei Guo, Long Zhang, Fang Zhu, Leilei Liu, Guo Qing Luo, and Ke Wu, "Substrate integrated waveguide filter with flexible mixed coupling," IEEE Transactions on Microwave Theory and Techniques, Vol. 71, No. 9, 4003-4011, 2023.

20. Mazzaro, Gregory J., "Nonlinear junction detection vs. electronics: System design and improved linearity," 2020 IEEE International Radar Conference (RADAR), 654-658, Washington, DC, USA, 2020.

21. Li, Jian, Wenxian Zheng, Xueming Wei, Yongjun Huang, and Guangjun Wen, "Millimeter-wave substrate integrated waveguide bandpass filters based on stepped-impedance E-shaped defected ground structures," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 32, No. 11, e23340, 2022.

Dr. Boyan Zhang

Professor Minquan Li

Dr. Guocui Zhu

Dr. Yongkang Yuan

Ms. Chen Li

Dr. Shuang Xiao

Dr. Xin Qu