53e24034-abbf-4b22-a6f2-2b1980379ccf20210406081201183wseamdt@crossref.orgMDT DepositWSEAS TRANSACTIONS ON COMMUNICATIONS2224-28641109-274210.37394/23204http://wseas.org/wseas/cms.action?id=40212320212320212010.37394/23204.2021.20https://wseas.org/wseas/cms.action?id=23291YuanzhiLiuUniversity of Ottawa, Ottawa, K1N 6N5 CanadaMustapha C.E.YagoubUniversity of Ottawa, Ottawa, K1N 6N5 CanadaThis paper proposes a substrate integrated waveguide (SIW) filtering slot antenna. Based on four SIW cavity resonators and a slot locating on the last resonator, a filtering antenna was designed, targeting the near 20 GHz satellite communication band. Simulated in the Ansys-HFSS commercial software, it exhibits a - 10 dB impedance bandwidth of 1.5 GHz and a flat gain of 5.5 dBi in the operating frequency band. Besides, the filtering antenna has good selectivity at passband edges and features such as compact size, low profile, and low cost, making it suitable for Ka-band satellite ground terminals.4620214620216365https://www.wseas.org/multimedia/journals/communications/2021/a165104-006(2021).pdf10.37394/23204.2021.20.8https://www.wseas.org/multimedia/journals/communications/2021/a165104-006(2021).pdf10.1109/lawp.2013.2271972X. Chen, F. Zhao, L. Yan and W. Zhang, “A compact filtering antenna with flat gain response Within the Passband,” IEEE Antennas and Wireless Propag. Lett., vol. 12, pp. 857-860, July 2013. 10.1109/lawp.2011.2147750C. Lin and S. Chung, “A compact filtering microstrip antenna with quasi-elliptic broadside antenna gain response,” IEEE Antennas and Wireless Propag. Lett., vol. 10, pp. 381-384, Apr. 2011. F. Chen, H. Hu, R. Li, Q. Chu, and M. J. Lancaster, “Design of filtering microstrip antenna array with Reduced sidelobe level,” IEEE Trans. on Antennas Propag., vol. 65, no. 2, pp. 903-908, Feb. 2017. 10.1109/tmtt.2011.2160986C. Lin and S. Chung, “A Filtering Microstrip Antenna Array,” IEEE Trans. Microwave Theory Tech., vol. 59, no. 11, pp. 2856-2863, Nov. 2011. L. Li and G. Liu, “A differential microstrip antenna with filtering response,” IEEE Antennas and Wireless Propag. Lett., vol. 15, pp. 1983-1986, Mar. 2016. 10.1109/icramet51080.2020.9298602Y. Liu, G. Bai and M.C.E. Yagoub, “A 79GHz series fed microstrip patch antenna array with bandwidth enhancement and sidelobe suppression,” in 2020 Int. Conf. on Radar, Antenna, Microw., Electronics, and Telecomm., pp. 155-158, Tangerang, Indonesia, Nov. 2020. 10.1109/tap.2015.2513075S. Park, D. Shin, and S. Park, “Low side-lobe substrate-integrated-waveguide antenna array using broadband unequal feeding network for millimeter-wave handset device,” IEEE Trans. on Antennas Propag., vol. 64, pp. 923-932, Dec. 2015. 10.23919/usnc/ursi49741.2020.9321630Y. Liu, M.C.E. Yagoub, and M. Nassor, “Omni-directional antenna array with improved gain for 5G communication systems,” in 2020 IEEE USNC-CNC-URSI North American Radio Science Meeting (Joint with AP-S Symp.), pp. 33-34, Montreal, QC, Canada, July 2020. Ansys® High Frequency Structure Simulator, Release 19.1. 10.1109/tmtt.2009.2013316X. Chen, K. Wu, and D. Drolet, “Substrate integrated waveguide filter with improved stopband performance for satellite ground terminal,” IEEE Trans. Microw. Theory Techn., vol. 57, pp. 674-683, Mar. 2009. 10.1109/lmwc.2010.2049258Q. Zhang, W. Yin, S. He, and L. Wu, “Compact substrate integrated waveguide (SIW) bandpass filter with complementary split-ring resonators (CSRRs),” IEEE Microw. Wireless Compon. Lett., vol. 20, no. 8, pp. 426-428, Aug. 2010. 10.1109/lmwc.2012.2221690L. Szydlowski, N. Leszczynska, A. Lamecki, and M. Mrozowski, “A substrate integrated waveguide (SIW) bandpass filter in a box configuration with frequency-dependent coupling,” IEEE Microw. Wireless Compon. Lett., vol. 22, no. 11, pp. 556-558, Nov. 2012.