volume | PIER Journals

Abstract

In this work, a substrate integrated waveguide slot array filtering antenna for dual band applications is presented. This novel design performs the functions of both a filter and an antenna simultaneously. The main intention of this work is to design a circuit that separates the frequencies in a dual band operation. The antenna is designed as an integration of two parts; the upper part operates at 10.2 GHz while the lower part operates at 16.4 GHz. In each part, an array of five longitudinal slots is incorporated, as well as a SIW antenna with complementary split ring resonators that operate as a band pass filter at the front end. Each slot array antenna is designed for a specific frequency band, and its function depends upon its preceding band pass filter. The two band pass filters allow only signals from the frequency bands for which they are designed, to their corresponding slot array antennas. This technique, along with properly spaced metal vias of the SIW antenna, prevents any leakage and hence reduces interference in dual band operation. Both the band pass filter and the antenna can be built on the same planar board. The antenna is fed through a microstrip to SIW taper transition. CST Microwave Studio software is used for optimization and simulation of the structure. The antenna was built on an RT Duroid 5880 and tested to investigate practical validation. The antenna has a bandwidth of 1.9 GHz, from 9.2 GHz to 11.1 GHz in the X-band, and 2.2 GHz, from 15.6 GHz to 16.9 GHz in the Ku band. The gain pattern is unidirectional in nature and has low side lobe levels of -24 dB and -21 dB at resonant frequencies. A noticeable difference that is greater than 20 dB between co-polarization and cross-polarization is observed. The dimensions of the antenna are 56 mm x 32 mm x 0.508 mm. There is an excellent similarity between the simulated and measured results.

1. Mao, C. X., Y. Zhang, X. Y. Zhang, P. Xiao, Y. Wang, and S. Gao, "Filtering antennas: Design methods and recent developments," IEEE Microwave Magazine, Vol. 22, No. 11, 52-63, 2021.
doi:10.1109/MMM.2021.3102199 Google Scholar

2. Liang, G.-Z., F.-C. Chen, H. Yuan, K.-R. Xiang, and Q.-X. Chu, "A high selectivity and high efficiency filtering antenna with controllable radiation nulls based on stacked patches," IEEE Transactions on Antennas and Propagation, Vol. 70, No. 1, 708-713, 2022.
doi:10.1109/TAP.2021.3098563 Google Scholar

3. Zhang, Y.-M., S. Zhang, G. Yang, and G. F. Pedersen, "A wideband filtering antenna array with harmonic suppression," IEEE Transactions on Microwave Theory and Techniques, Vol. 68, No. 10, 4327-4339, 2020.
doi:10.1109/TMTT.2020.2993307 Google Scholar

4. Dng, C. F., Z. Y. Zhang, and M. Yu, "Simple dual-polarized filtering antenna with enhanced bandwidth for base station applications," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 6, 4354-4361, 2020.
doi:10.1109/TAP.2020.2975282 Google Scholar

5. Yang, S. J., Y. M. Pan, L.-Y. Shi, and Z. Y. Zhang, "Millimeter-wave dual-polarized filtering antenna for 5G applications," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 7, 5114-5121, 2020.
doi:10.1109/TAP.2020.2975534 Google Scholar

6. Wang, H.-Y., G. Zhao, R.-Y. Li, and Y.-C. Jiao, "A low-profile half-mode substrate integrated waveguide filtering antenna with high frequency selectivity," Progress In Electromagnetics Research Letters, Vol. 99, 35-43, 2021. Google Scholar

7. Xie, H. Y., B. Wu, Y.-L. Wang, C. Fan, J.-Z. Chen, and T. Su, "Wideband SIW filtering antenna with controllable radiation nulls using dual-mode cavities," IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 9, 1799-1803, 2021.
doi:10.1109/LAWP.2021.3097214 Google Scholar

8. Hua, C., X. Jin, and M. Liu, "Design of compact vertically stacked SIW end-fire filtering antennas with transmission zeros," Progress In Electromagnetics Research Letters, Vol. 87, 67-73, 2019.
doi:10.2528/PIERL19072205 Google Scholar

9. Altaf, A., W. Abbas, and M. Seo, "A wideband SIW-based slot antenna for D-band applications," IEEE Antennas and Wireless Propagation Letters, Vol. 20, No. 10, 1868-1872, 2021.
doi:10.1109/LAWP.2021.3097395 Google Scholar

10. Diman, A. A., et al. "Efficient SIW-feed network suppressing mutual coupling of slot antenna array," IEEE Transactions on Antennas and Propagation, Vol. 69, No. 9, 6058-6063, 2021.
doi:10.1109/TAP.2021.3069557 Google Scholar

11. Zheng, D., Y.-L. Lyu, and K. Wu, "Longitudinally slotted SIW leaky-wave antenna for low cross-polarization millimeter-wave applications," IEEE Transactions on Antennas and Propagation, Vol. 68, No. 2, 656-664, 2020.
doi:10.1109/TAP.2019.2940469 Google Scholar

12. El Misilmani, H. M., M. Al-Husseini, and K. Y. Kabalan, "Design of slotted waveguide antennas with low sidelobes for high power microwave applications," Progress In Electromagnetics Research C, Vol. 56, 15-28, 2015.
doi:10.2528/PIERC14121903 Google Scholar

13. Kachhia, J., A. Patel, A. Vala, R. Patel, and K. Mahant, "Logarithmic slots antennas using substrate integrated waveguide," International Journal of Microwave Science and Technology, Vol. 2015, 1-11, 2015.
doi:10.1155/2015/629797 Google Scholar

14. Farrall, A. J. and P. R. Young, "Integrated waveguide slot antennas," IEEE Electronics Letters, Vol. 40, 974-975, 2004.
doi:10.1049/el:20045505 Google Scholar

15. Zamzam, K. and J. Bornemann, "New wideband transition from microstrip line to substrate integrated wave guide," IEEE Transactions on Microwave Theory and Techniques, Vol. 62, No. 12, 2983-2989, 2014.
doi:10.1109/TMTT.2014.2365794 Google Scholar

16. Fu, W., Z. Li, P. Liu, J. Cheng, and X. Qiu, "Modeling and analysis of novel CSRRs-loaded dual-band band pass SIW filters," IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 68, No. 7, 2352-2356, 2021.
doi:10.1109/TCSII.2021.3052574 Google Scholar

17. Soundarya, G. and N. Gunavathi, "Compact dual-band SIW band pass filter using CSRR and DGS structure resonators," Progress In Electromagnetics Research Letters, Vol. 101, 79-87, 2021.
doi:10.2528/PIERL21091301 Google Scholar

18. Rayala, R. K. and S. Raghavan, "Articial neural network based SIW band pass filter design using complementary split ring resonators," Progress In Electromagnetics Research C, Vol. 115, 277-289, 2021.
doi:10.2528/PIERC21072305 Google Scholar

Dr. Ayyadevara Murali Maruti

Dr. Bhavan S. Naga Kishore