2015.7 - 至今 厦门大学，电子科学系/电磁声学研究院，助理教授（硕士生导师） 2012.9 - 2014.9 杜克大学，电子与计算机工程系，国家公派联合培养博士 2009.9 - 2015.6 电子科技大学，电子工程学院，极高频复杂系统国防重点学科实验室，电磁场与微波技术，工学博士 2005.9 - 2009.7 电子科技大学，电子工程学院，电磁场与无线技术，工学学士

微波毫米波无源器件/有源电路及系统前端、平面微带天线、毫米波天线/天线阵、基于新型/超材料的微波电路设计、忆阻器。

[43] Wenxun Li, Kai Da Xu*, Xiaohong Tang, Yang Yang,and Qing Huo Liu, “Substrate integrated waveguide cavity-backed slot array antenna using high-order radiation modes for dual-band applications in K-band,” IEEE Transactions on Antennas and Propagation, 2017. (minor revision) (SCI) [42] Yanhui Liu, Xin Huang, Kai Da Xu*, Zhengyong Song, Shiwen Yang and Qing Huo Liu, “Pattern synthesis of unequally spaced linear arrays including mutual coupling using iterative FFT via virtual active element pattern expansion,” IEEE Transactions on Antennas and Propagation, 2017. (Accepted) (SCI) [41] Jing Ai, Yonghong Zhang, Kai Da Xu*, Mengkui Shen, and William T. Joines, “Miniaturized frequency controllable bandstop filter using coupled line stubs loaded shorted SIR for tri-band application,” IEEE Microw. Wireless Compon Lett., 2017. (Accepted) (SCI) [40] Mengze Li, Kai Da Xu*, Jing Ai, and Yanhui Liu, “Compact diplexer using short stub-loaded composite right/left-handed resonators,” Microwave and Optical Technology Letters, vol. 59, no. 6, pp. 1470-1474, 2017. (SCI) [39] Junlin Tang, Kai Da Xu*, Yuan Zeng, Guangrong Yue, and Shaoqian Li, “Effect of phase shifter quantization error on the performance of millimeter wave beam steering,”IEICE Transactions on Communications, vol. E100-B, no.10, pp.-, Oct. 2017. (SCI) [38] Kaida Xu, Mengze Li, Yanhui Liu, Jing Ai and Yecheng Bai, “Compact triple mode bandpass filters using dual-stub-loaded spiral resonators,” Radioengineering, vol. 26, no. 1, pp. 23-29, 2017. (SCI) [37] Pengfei You, Yanhui Liu, Kaida Xu, Chunhui Zhu, and Qing Huo Liu, “Generalization of GA-FFT for synthesizing unequally spaced linear array shaped pattern including coupling effects,” IET Microwaves, Antennas & Propagation, vol. 11, no. 6, pp. 827-832, 2017. (SCI) [36] Qun Li, Yonghong Zhang, Daotong Li, and Kaida Xu, “Compact low-pass filters with deep and ultra-wide stopband using tri- and quad-mode resonators,” IET Microwaves, Antennas & Propagation, vol. 11, no. 5, pp. 743-748, 2017. (SCI) [35] Hao Peng, Xinlin Xia, Serioja Ovidiu Tatu, Kai-Da Xu*, Jun Dong, and Tao Yang, “Broadband phase shifters using comprehensive compensation method,” Microwave and Optical Technology Letters, vol. 59, no. 4, pp. 766-770, 2017.(SCI) [34] Kai Da Xu, Han Xu, Yanhui Liu, Qing Huo Liu, and Qingsheng Zeng, “A printed quasi-Yagi antenna with dual-stub-loaded parasitic strip director for bandwidth enhancement,” Microwave and Optical Technology Letters, vol. 59, no. 2, pp. 447-451, Feb. 2017. (SCI) [33] Kaida Xu, Han Xu, Yanhui Liu, Jing Ai and Qing Huo Liu, “Short- and open-stub loaded spiral resonator and its application in planar microstrip filters,” IET Microwaves, Antennas & Propagation, vol. 11, no. 3, pp. 363-369, 2017.(SCI) [32] Yingjiang Guo, Xiaohong Tang, Kaida Xu*, and Jing Ai, “Dual high-selectivity band-notched UWB monopole antenna using simple dual-mode resonator and high-impedance lines,” International Journal of Microwave and Wireless Technologies, vol. 9, no. 4, pp. 923-929, 2017. (SCI) 2016 [31] Kaida Xu, Xueshi Li, Yingjiang Guo, and Qing Huo Liu, “Simple memristive SPICE macro-models and reconfigurability in filter and antenna,” Radioengineering, vol. 25, no. 4, pp. 700-706, 2016. (SCI) [30] Ying Jiang Guo, Xiao Hong Tang, and Kai Da Xu*, “Dual high-selectivity band-notched ultra-wideband filter with improved out-of-band rejection,” Applied Computational Electromagnetics Society Journal, vol. 31, no. 9, pp. 1072-1078, 2016. (SCI) [29] Kai-Da Xu, Ye-ChengBai, Chun-Hui Zhu, Yan-Hui Liu, and Qing-Huo Liu, “Compact bandpass filters using multi-stub loaded spiral short-ended resonator,” Microwave and Optical Technology Letters, vol. 58, no. 11, pp. 2738-2741, 2016. (SCI) [28] Xue-Shi Li, Kai-Da Xu*, and Yuan-Mei Xu, “Reactive impedance surface based multisystem satellite navigation antenna,”Microwave and Optical Technology Letters, vol. 58, no. 11, pp. 2764-2769, 2016. (SCI) [27] Jing Ai, Yonghong Zhang, Kaida Xu*, Yang Yang, Yin Tian, and William T. Joines, “Miniaturised X-band balanced microwave limiter based on thin film hybrid integrated circuit technology,” IET Electron. Lett., vol. 52, no. 15, pp. 1318-1319, 2016. (SCI) [26] Lirong Zhang, Shanshan Wu, Kaida Xu, Shuang Yan, Jinfeng Zhu, Timothy Lin and Qing Huo Liu, “Ultrathin plasmonic frequency selective surface with subwavelength hole arrays,” Microwave and Optical Technology Letters, vol. 58, no. 9, pp. 2171-2176, 2016. (SCI) [25] Jing Ai, Yonghong Zhang, Kaida Xu*, Daotong Li, and Yong Fan, “Miniaturized quint-band bandpass filter based on multi-mode resonator and λ/4 resonators with mixed electric and magnetic coupling,” IEEE Microw. Wireless Compon Lett., vol. 26, no. 5, pp. 343-345, May 2016. (SCI) [24] Jing Ai, Yonghong Zhang, Kaida Xu*, Yingjiang Guo, William T. Joines, and Qing Huo Liu, “Compact sext-band bandpass filter based on a single multi-mode resonator with high band-to-band isolations,” IET Electron. Lett., vol. 52, no. 9, pp. 729-731, 2016. (SCI) [23] Yingjiang Guo, Xiaohong Tang, and Kaida Xu*, “Ultra-wideband power divider with a controllable notched band,”Electromagnetics, vol. 36, no. 3, pp. 214-223, 2016. (SCI) [22] Jing Ai, Yonghong Zhang, Kai-Da Xu*, Daotong Li, and Qing Huo Liu, “Design of a high-selectivity quad-band bandpass filter based on λ/4 resonators with alternative J/K inverters,” AEÜ - International Journal of Electronics and Communications,vol. 70, no. 8, pp. 1028-1033, August, 2016. (SCI) [21] Xida Deng, Zhigang Wang, Kaida Xu, and Bo Yan, “Compact full Ka-band waveguide directional coupler based on large aperture array,” IET Electron. Lett., vol. 52, no. 11, pp. 936-937, 2016. (SCI) [20] Yingjiang Guo, Xiaohong Tang, and Kaida Xu, “Electronically reconfigurable notch filter for cognitive radios application,” Journal of Computational and Theoretical Nanoscience, vol. 13, no. 10, pp. 6901-6905, 2016. (SCI) [19] Xida Deng, Kaida Xu*, Zhigang Wang, and Bo Yan, “Novel microstrip ultra-wideband bandpass filter using radial-stub-loaded structure,” Applied Computational Electromagnetics Society Express Journal, vol. 1, no. 1, pp. 20-23, 2016. (SCI) 2015 [18] K. D. Xu, Y. H. Zhang, R. J. Spiegel, Y. Fan, W. T. Joines and Q. H. Liu, “Design of a stub-loaded ring-resonator slot for antenna applications,” IEEE Transactions on Antennas and Propagation, vol. 63, no. 2, pp. 517-524, Feb. 2015. (SCI) [17] K. D. Xu, Y. H. Zhang, X. S. Li, J. Ai, Y. Fan and W. T. Joines, “A compact stub-loaded composite right/left-handed resonator and its application in bandpass filters,” Microwave and Optical Technology Letters, vol. 57, no. 9, pp. 1999-2002, 2015. (SCI) [16] K. D. Xu*, Y. H. Zhang, J. Ai and Q. H. Liu, “Microstrip tri-mode bandpass filters using modified ring resonators,” Progress In Electromagnetics Research C, vol. 58, pp. 135-142, 2015. [15] K. D. Xu, Y. H. Zhang, Y. Fan, W. T. Joines* and Q. H. Liu, “Microstrip dual-mode bandpass filter design using pie-section truncated semi-circle and quarter-circle resonators,” IET Microwaves, Antennas & Propagation, vol. 9, no. 3, pp. 224-229, Feb. 2015. (SCI) [14] D.T. Li, Y.H. Zhang*, K.D. Xu, K.J. Song, and L.W. Li, “Compact wideband bandpass filter using improved triple-mode resonator with broad upper stopband,” Applied Computational Electromagnetics Society Journal, vol. 30, no. 7, pp. 779-784, 2015. (SCI) [13] D.T. Li, Y.H. Zhang*, K.D. Xu, K.J. Song, and L.W. Li, “Compact dual-wideband bandpass filter with good selectivity using side-coupled λ／4 shorted SIR,” Journal of Electromagnetic Waves and Applications, vol. 29, no. 1, pp. 69-79, 2015. (SCI) [12] D.T. Li, Y.H. Zhang*, K.J. Song, K.D. Xu and L.W. Li, “Miniaturized Close-Dual-Band Bandpass Filter Based on Short Stub-Loaded SIRs,” Electromagnetics, vol. 35, no. 1, pp. 49-58, 2015. (SCI) [11] Xueshi Li*, Kaida Xu, Dongyue Zhou, Fei Du and Zhimin Liu, “Metamaterial extends patch antenna bandwidth,” Microwaves & RF, vol.54, no. 5, pp. 58-64, 2015. 2014 [10] K. D. Xu*, Y. H. Zhang, L. Wang, Y. Fan, M. Q. Yuan, W. T. Joines and Q. H. Liu,“Two memristor SPICE models and their applications in microwave devices,” IEEE Transactions on Nanotechnology, vol. 13, no. 3, pp. 607-616, May. 2014. (SCI) [9] K. D. Xu, Y. H. Zhang, J. L. W. Li, W. T. Joines* and Q. H. Liu, “Compact ultra-wideband bandpass filter using quad-T-stub-loaded ring structure,” Microwave and Optical Technology Letters, vol. 56, no. 9, pp. 1988-1991, Sep. 2014. (SCI) [8] K. D. Xu, Y. H. Zhang, Y. Fan, J. L. W. Li, W. T. Joines* and Q. H. Liu, “Planar dual- and tri-band bandpass filters using single improved ring resonator and simple feed scheme,” Microwave and Optical Technology Letters, vol. 56, no. 3, pp. 574-577, March. 2014. (SCI) [7] K. D. Xu, Y. H. Zhang*, J. L. W. Li, W. T. Joines and Q. H. Liu, “Miniaturized notch-band UWB bandpass filters using interdigital-coupled feed-line structure,” Microwave and Optical Technology Letters, vol. 56, no. 10, pp. 2215-2217, Oct. 2014. (SCI) 2011-2013 [6] K. D. Xu*, Y. H. Zhang, D. T. Li, Y. Fan, W. T. Joines and Q. H. Liu, “Novel design of a compact triple-band bandpass filter using short stub-loaded SIRs and embedded SIRs structure,” Progress In Electromagnetics Research, vol. 142, pp. 309-320, 2013. (SCI) [5] K. D. Xu*, Y. H. Zhang, W. T. Joines, Q. H. Liu and Y. Fan, “Tri-band bandpass filter using short stub-loaded dual-mode resonators,” Microwave Journal, vol. 56, no. 9, pp. 122-130, Sep. 2013. (SCI) [4] K. D. Xu*, Y. H. Zhang, Y. Yang, W. T. Joines, Q. H. Liu and Y. Fan, “A tri-mode bandpass filter using capacitive and inductive source-load coupling,” Microwave Journal, vol. 56, no. 5, pp. 178-188, May 2013. (SCI) [3] K. D. Xu*, Y. H. Zhang, Y. Fan, W. T. Joines and Q. H. Liu, “Novel circular dual-mode filter with both capacitive and inductive source-load coupling for multiple transmission zeros,” Journal of Electromagnetic Waves and Applications, vol. 26, pp. 1675-1684, 2012. (SCI) [2] Fuqun Zhong*, Bo Zhang, Yong Fan, Minghua Zhao and Kaida Xu. “Development of an improved sub-harmonic mixer based on planar schottky diodes at 94 GHz,” Research Journal of Applied Sciences, Engineering and Technology, vol. 4, no. 13, pp. 1895-1898, 2012. (EI) [1] K.-D. Xu*, Y.-H. Zhang, C.-L. Zhuge, and Y. Fan, “Miniaturized dual-band bandpass filter using short stub-loaded dual-mode resonators,” Journal of Electromagnetic Waves and Applications, vol. 25, pp. 2264-2273, 2011. (SCI)