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黃謀勤
黃謀勤
教授
組　　　別：
電波組
辦　公　室：
ED927
電　　　話：
(03)5712121ext54546
信　　　箱：
malcolm.ng@ieee.org
實驗室名稱：
天線實驗室
實驗室位置：
ED 923
實驗室分機：
#54593
研究　主題：
天線設計, 電磁理論
  • 個人簡歷
    黃謀勤於2001年在新加坡國立大學取得電機工程學士學位，並於2004年2月及2005年12月分別在瑞典哥德堡查爾莫斯理工大學取得工程學碩士和博士學位，專業均為電機工程。在2006年至2008年期間，他曾在加拿大曼尼托巴大學電機與電腦工程系擔任博士後研究員。隨後，他前往加拿大蒙特利爾的康考迪亞大學進行另一年的博士後研究工作。2009年8月，他加入台灣新竹國立交通大學電機工程系，最初以助理教授身分，並自2012年8月起擔任副教授。他在2002年至2006年期間積極參與瑞典國防研究機構資助的研究項目。2004年秋季，他曾在意大利錫耶納大學進行為期數月的研究訪問。同年12月，他應邀IEEE克羅地亞分會活動在克羅地亞的札格雷布大學進行了訪問並發表了一場IEEE演講。他是IEEE的高級會員。在2006年至2009年期間，他積極參與了多項由加拿大工業界和國家研究機構支持的項目。自2009年8月以來，他一直在台灣國家科學委員會和科技部獲得研究項目資助。他是IET Microwaves, Antennas and Propagation的副編輯。黃謀勤博士於2007年獲得了國際無線電科學聯盟（URSI）青年科學家獎，並於2013年和2014年獲得了國立交通大學的教學優異獎。

  • 經歷與榮譽

    Awards

    o 校內榮譽事項    2014    優良教學獎    交通大學
    o 校內榮譽事項    2013    優良教學獎    交通大學
    o 校外榮譽事項    2007    URSI Young Scientist Award    Union Radio Scientifique Internationale
    o 校外榮譽事項    2007    Marquis Who's Who in Asia    
    o 校外榮譽事項    2006    Marquis Who's Who in Science and Engineering
     

    Professional Experience

    o 教授, 陽明交大 電信所 (2020.8 ~ present)
    o 副教授, 陽明交大 電信所 (2012.8 ~ 2020.7)
    o 助理教授, 陽明交大 電信所 (2009.8 ~ 2012.7)
    o 博士後研究員, ECE Dept., Concordia Univ., Canada, (2008.10 ~ 2009.9)
    o 博士後研究員 ECE Dept., Applied Electromagnetics, Univ. of Manitoba, Canada, (2006.9 ~ 2008.9)
    o 訪問學者, Department of Information Engineering, University of Siena, Italy(2004.9 ~ 2004.12
    o 研究助理, Antenna Group, Chalmers University of Technology, Sweden, (2001.6 ~ 2006.7)

  • 研究主題

    主題一:

    Metasurface lenses

    ng_1.png

    現今，超材料這個主題已經被廣泛研究，其在諸多領域例如，光學，光子學，天線，感測，影像和光譜學等方面均具有很高的潛力。而由二維的週期性金屬貼片構成的超穎介面透鏡已曾被提出。超穎介面除了可以合成出多種於自然界中較難取得的材質特之外，相較於傳統的透鏡，此種實現的方法可以達到降低成本，節省空間效益與輕量化的目的。
    本文將倫柏格透鏡應用於表面波天線。然而，在基礎理論的分析當中，大部分的問現都沒有提及關於波的傳遞方向之於週期性結構的色散關係市的探討。因此本文將提出另一種週期性的排列方式以合成倫伯格透鏡。首先，將波傳遞的方向考量帶進色散關係式加以分析。接著，透過比較兩種週期性排列的透進來驗證前面所提出的理論。除此之外，利用孔徑天線的特性定義出此天線的孔徑，並且將其表現透過各種效率的計算以達到特徵與量化的目的。除此之外，於文末將會提出一種新的合成方式改良作為表面波天線的表現。

    [1] J. A. Dockrey, M. J. Lockyear, S. J. Berry, S. A. R. Horsley, J. R. Sambles, and A. P.Hibbins, “Thin metamaterial Luneburg lens for surface waves” Electromagnetic andAcoustic Materials Group, Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom, March 2013. (Link)
    [2] L. Yin, V. K. Vlasko-Vlasov, J. Pearson, J. M. Hiller, J. Hua, U. Welp, D. E. Brown, and C. W. Kimball, “Subwavelength focusing and guiding of surface plasmons,” Nano. Lett. 5, 1399–1402 (2005). (Link)
    [3] O. Quevedo-Teruel, M. Ebrahimpouri, M. Kehn, “Ultra Wide Band Metasurface Lenses Based on Off-Shifted Opposite Layers,” IEEE Antennas Wireless Propag.Lett., vol. 15, pp. 484-487, 2016. (Link)
    [4] S. Maci, G. Minatti, M. Casaletti, and Marko Bosiljevac, “Metasurfing: Addressing Waves on Impenetrable Metasurfaces,” IEEE antennas and wireless propagation letters, vol. 10, 2011. (Link)
    [5] M. Casaletti, F. Caminita, and S. Maci, “A Luneburg lens designed by using a variable artificial surface,” in Proc. IEEE Antennas Propag. Society Int. Symp. (APSURSI), Jul. 11–17, 2010, pp. 1–4. (Link)
    [6] L. Xue and V. F. Fusco, “Printed holey plate Luneburg lens,” Microw. Opt. Technol. Lett., vol. 50, pp. 378–380, Dec. 2007. (Link)

    主題二:

    Holographic leaky-wave antennasng_2.png
     

    全息漏波天線已經發展幾年的時間，這是一種透過全息理論設計出的指向性漏波天線，天線平面是由 PCB 板以及表面的次波長金屬片所組成。當我們饋入一個已知的表面波，天線就會輻射一個筆型波束在我們所期望的角度，如果改變表面金屬片的排列，波束的輻射角度也會因此變化，根據這種特性，我們想更近一步發展波束轉向的技術，並利用機械式如旋轉的結構而非主動式電路來達成。在這篇論文中，天線平面被分割成好幾個部分，每個部份擁有各自的全息表面，然後利用金屬罩覆蓋住不需要的部分，只有露出來的部分天線能夠正常輻射，藉由旋轉金屬罩來調整能夠輻射的部分，輻射的角度就會因此改變以達到波束轉向的效果。

    [1] D. Sievenpiper, J. Colburn, B. Fong, J. Ottusch, and J. Visher, “Holographic artificial impedance surfaces for conformal antennas,” presented at the IEEE Antennas and Propagation Symposium Digest, Washington DC, Jul. 5, 2005. (Link)
    [2] Dan Sievenpiper, James Schaffner, Robert Loo, Gregory Tangonan, Samuel Ontiveros, and Rick Harold, “A Tunable Impedance Surface Performing as a Reconfigurable Beam Steering Reflector," IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 50, NO. 3, MARCH 2002. (Link)
    [3] An Overview of the Theory and Applications of Metasurfaces: The Two-Dimensional Equivalents of Metamaterials. (Link)
    [4] D. Sievenpiper, L. Zhang, R. Broas, N. Alexopolous, and E. Yablonovitch, “High-impedance electromagnetic surfaces with a
    forbidden frequency band,” IEEE Trans. Microw. Theory Tech., vol. 47, pp. 2059–2074, Nov. 1999. (Link)
    [5] Sivaseetharaman Pandi, “Holographic Metasurface Leaky Wave Antennas”, A Dissertation Presented in Partial Fullment of the Requirements for the Degree Doctor of Philosophy. (Link)
    [6] W. Kock, “Microwave holography,” Microwaves, vol. 7, no. 11, pp. 46–54, Nov. 1968. (Link)
    [7] Christian Rusch, “Holographic Antennas”, Handbook of Antenna Technologies, Springer Science + Business Media Singapore 2015. (Link)
    [8] P. Checcacci, V. Russo, and A. Scheggi, “Holographic antennas,” IEEE Trans. Antennas Propag., vol. 18, no. 6, pp. 811–813, Nov. 1970. (Link)
    [9] Bryan H. Fong, Joseph S. Colburn, John J. Ottusch, John L. Visher, and Daniel F. Sievenpiper, “Scalar and Tensor Holographic Artificial Impedance Surfaces," IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 58, NO. 10, OCTOBER 2010. (Link)
    [10] Ming Yao and Jia Lin Li, “Beam reconfigurable holographic artificial impedance surface at terahertz band”, Journal of Physics D: Applied Physics, Published 6 February 2019. (Link)
    [11] S. Ramo, J. R. Whinnery, and T. Van Duzer, Fields and Waves in Communication Electronics, 2nd ed. New York: Wiley, 1984.

    主題三:

    Analysis of grated/corrugated structures by asymptotic boundary conditions

     

    ng_3.png


    經典矢量勢分析的方法以及漸近條帶邊界條件（ASBC）用於處理包裹在芯介電圓柱棒上的導電條帶光柵介電管。憑藉週期性紋理表面，該結構能夠表現出促進強表面場定位和波傳播的等離子體行為，從而將其自身作為圓柱形表面波波導或天線。它還可以配置為表現出電磁帶隙 (EBG) 特性，從而產生所謂的圓柱形 EBG 結構。與芯棒導電的典型對應物相反，芯電介質在本文中被證明對於實現寬總帶隙至關重要，其中既不存在慢表面波也不存在快空間波，這是導電芯棒版本無法實現的，只能提供表面波帶隙，就像文獻中許多其他人一樣也忽略了對快空間波的抑制。 通過同軸連接各種這樣的桿結構，每個桿結構都有自己獨特的總帶隙、多頻率、多功能圓柱形天線，即使在同時操作的情況下也可以減輕帶間干擾，當任何一個桿的通帶（其中 它的工作頻率位於）落在所有其他的總帶隙內，如本文所調查的。 還對製造的原型進行了測量，得出的實驗結果與理論預測非常吻合。

    [1] S. A. Maier, S. R. Andrews, L. Martín-Moreno, and F. J. García-Vidal, ‘‘Terahertz surface plasmon-polariton propagation and focusing on periodically corrugated metal wires,’’ Phys. Rev. Lett., vol. 97, pp. 176805-1–176805-4, Oct. 2006. (Link)
    [2] Y. Chen, Z. Song, Y. Li, M. Hu, Q. Xing, Z. Zhang, L. Chai, and C.-Y. Wang, ‘‘Effective surface plasmon polaritons on the metal wire with arrays of subwavelength grooves,’’ Opt. Exp., vol. 14, no. 26, pp. 13021–13029, Dec. 2006. (Link)
    [3] G. K. Palikaras, A. P. Feresidis, and J. C. Vardaxoglou, ‘‘Cylindrical electromagnetic bandgap structures for directive base station antennas,’’ IEEE Antennas Wireless Propag. Lett., vol. 3, pp. 87–89, 2004. (Link)
    [4] G. K. Palikaras, A. P. Feresidis, and J. C. Vardaxoglou, ‘‘Cylindrical EBG surfaces for omni-directional wireless LAN antennas,’’ in Proc. IEEE Antennas Propag. Soc. Int. Symp., Washington, DC, USA, Jul. 2005, pp. 339–342. (Link)
     

  • 期刊論文
    • T. -C. Yang, Y. -K. Chen and M. Ng Mou Kehn, "Metasurface cloaking lens designed by the ray insertion method," IEEE Antennas and Wireless Propagation Letters, doi: 10.1109/LAWP.2023.3246843.
    • M. Ng Mou Kehn and C.-Y. Wu, Analysis by asymptotic boundary conditions of strip-grated dielectric pipe over dielectric rod with wide total band-gap as multi-frequency cylindrical leaky-wave antennas, IEEE Access, vol. 10, pp. 108651-108667, 2022, doi: 10.1109/ACCESS.2022.3213802.
    • M. Ng Mou Kehn and J. H. Liao, "Multiple stacks of rotated metal strip gratings for high-gain bandwidth enhancement and gain control of overlying dipoles – analysis by asymptotic strips boundary conditions", IEEE Transactions on Antennas and Propagation, vol. 70, no. 12, pp. 11867-11880, Dec. 2022, doi: 10.1109/TAP.2022.3209692.
    • M. Ng Mou Kehn and J.-H. Liao, "Supplementary material: multiple stacks of rotated metal strip gratings for high-gain bandwidth enhancement and gain control of overlying dipoles – analysis by asymptotic strips boundary conditions", IEEE Transactions on Antennas and Propagation, vol. 70, no. 12, Dec. 2022.
    • M. Ng Mou Kehn, E. Rajo-Iglesias, and T. C. Yang, “W-Band 76 to 81 GHz millimeter-wave comb-line array for automotive short range radar”, Radio Science, vol. 57, no. 4, pp. 1–14, Apr. 2022.
    • M. Ng Mou Kehn and C. Z. Chen, “Analysis of leaky-wave radiation from corrugated parallel-plate waveguides with steerable beams by rotatable corrugations,” IEEE Transactions on Antennas and Propagation, vol. 69, no. 9, pp. 5455-5468, Sept. 2021.
    • J. Y. Wang, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Design of a planar array of low profile horns at 28 GHz,” Sensors, 20, 6989, pp. 1-15, 2020.
    • M. Ng Mou Kehn, “Enhancements of applications entailing higher-order Floquet harmonics of penetrable metallic gratings with bars loaded with conducting fins and stratified dielectric covers on both sides,” Progress in Electromagnetic Research, vol. 88, pp. 19-34, 2020.
    • M. Ng Mou Kehn, C. K. Hsieh, and E. Rajo-Iglesias, "Array of horns fed by a transverse slotted groove gap waveguide at 28 GHz," Sensors, 20, 5311, pp. 1-15, 2020.
    • M. Ng Mou Kehn, “Moment method treatment of corrugations with fins over ridges and stratified covers using dyadic cavity and multilayer green's functions for studies of higher-order diffraction modes,” Progress in Electromagnetic Research, vol. 88, pp. 1-18, 2020.
    • M. Ng Mou Kehn and W. Y. Lai, "Modal analysis of gratings with conducting strip-loaded bars and sandwiched between multiple dielectric layers," IEEE Transactions on Antennas and Propagation, vol. 68, no. 6, pp. 5027-5032, June 2020, doi: 10.1109/TAP.2019.2955214.
    • M. Ng Mou Kehn and W. Y. Lai, "Characterization of extraordinary transmission through conducting screens pierced by arrays of rectangular flared holes for quantitative comparison among various taper profiles and study of metal losses," OSA Continuum, vol. 2, no. 9, pp. 2728-2754, Sep. 2019.
    • W.-Y. Lai and M. Ng Mou Kehn, "Analysis of doubly-stacked rotated gratings using asymptotic corrugations boundary conditions," IEEE Transactions on Antennas and Propagation, vol. 67, no. 7, pp. 4693-4707, Jul. 2019.
    • Y.-C. Yang and M. Ng Mou Kehn, "Analysis of strip-grated dielectric-coated rods by asymptotic strip boundary conditions for studies of dielectric losses and field localization," IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 5, pp. 1740-1752, May 2019.
    • Y.-C. Yang and M. Ng Mou Kehn, "Supplementary material: analysis of strip-grated dielectric-coated rods by asymptotic strip boundary conditions for studies of dielectric losses and field localization," IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 5, pp. 1-5, May 2019.
    • C. F. Chin and M. Ng Mou Kehn, "Efficient analysis of longitudinally corrugated rods using asymptotic boundary conditions for investigation of conductor losses and plasmonic field localization," IEEE Transactions on Antennas and Propagation, vol. 67, no. 5, pp. 3185-3199, May 2019.
    • M. Ng Mou Kehn, "Modal analysis of metallic screen with finite conductivity perforated by an array of subwavelength rectangular flared holes," Opt. Exp., vol. 26, no. 25, pp. 32981-33004, Oct. 2018.
    • M. Ng Mou Kehn, “Extraordinary transmission through subwavelength hole arrays for general oblique incidence – mechanism as related to surface wave dispersion and Floquet lattice diagrams,” Progress in Electromagnetic Research, vol. 82, pp. 49-71, 2018.
    • H. C. Chou, N. L .Tung, and M. Ng Mou Kehn, "The double-focus generalized Luneburg lens design and synthesis using metasurfaces," IEEE Transactions on Antennas and Propagation, vol. 66, no. 9, pp. 4936-4941, Sep. 2018.
    • J. Y. Li and M. Ng Mou Kehn, "The 90o rotating Eaton lens synthesized by metasurfaces," IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 7, pp. 1247-1251, May 2018.
    • J. W. Yang, W. Y. Lai, H. C. Chou, and M. Ng Mou Kehn, "Compact Mikaelian lens synthesized by metasurfaces," IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 3, pp. 397-400, Mar. 2018.
    • M. Ng Mou Kehn and J. Y. Li, "Modal analysis of corrugated plasmonic rods for the study of field localization, conductor attenuation and dielectric losses," IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 4, pp. 1684-1700, Apr. 2018.
    • K. C. Chen, J. W. Yang, Y. C. Yang, C. F. Khin, and M. Ng Mou Kehn, "Plasmonic Luneburg lens antenna synthesized by metasurfaces with hexagonal lattices," Optics Express, vol.25, no. 22, Oct. 2017.
    • M. Ng Mou Kehn, "Corrugated waveguides with stepped ridges and stratified core: reduction of metal and aperture losses and study of thermal and RF breakdown," IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 5, pp. 1407-1421, May 2017.
    • M. Ng Mou Kehn, "Corrugated waveguides with stepped ridges and stratified core for high-power transmission: modal analysis by radial-cavity and concentric multilayer Green's functions," IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 11, pp. 3409-3428, Nov 2016.
    • O. Quevedo-Teruel, M. Ebrahimpouri, and M. Ng Mou Kehn, "Ultra wide band metasurface lenses based on off-shifted opposite layers," IEEE Antennas and Wireless Propagation Letters, vol. 15, pp. 484-487, Oct 2015.
    • M. Ng Mou Kehn, "Modal analysis of substrate integrated waveguides with rectangular via-holes using cavity and multilayer Green's functions," IEEE Transactions on Microwave Theory and Techniques, vol. 62, no. 10, pp. 2214-2231, Oct 2014.
    • M. Ng Mou Kehn, "Corrugated surfaces with tailorable dark sectors within prescribed frequency bands," IEEE Transactions on Antennas and Propagation, vol. 62, no. 10, pp. 5133-5147, Oct 2014.
    • M. Ng Mou Kehn, "Modal analysis of all-walls longitudinally corrugated rectangular waveguides using asymptotic corrugations boundary conditions," IEEE Transactions on Microwave Theory and Techniques, vol. 61, no. 11, pp. 3821-3837, Nov 2013.
    • M. Ng Mou Kehn, "Efficiency enhancement of single off-axis and multiple overlapping beam reflectors using dielectric-covered focal plane array feeds" Radio Science, vol. 48, issue 1, pp. 69–88, Jan/Feb 2013. DOI: 10.1002/rds.20022
    • M. Ng Mou Kehn, "Rapid surface-wave dispersion and plane-wave reflection analyses of planar corrugated surfaces by asymptotic corrugations boundary conditions even for oblique azimuth planes", IEEE Transactions on Antennas and Propagation, vol. 61, no. 5, pp. 2695-2707, May 2013.
    • S. Y. Yang and M. Ng Mou Kehn, "A bisected miniaturized ZOR antenna with increased bandwidth and radiation efficiency", IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 159-162, 2013.
    • L. Shafai and M. Ng Mou Kehn, "Spherical slotted antenna coated with double layer of materials having combinations of singly and doubly negative parameters and consequences of mode resonances", Progress in Electromagnetics Research (PIER) B, vol. 45, 223-249, 2012.
    • E. Pucci, E. Rajo-Iglesias, M. Ng Mou Kehn, and O. Quevedo-Teruel, "Enhancing the efficiency of compact patch antennas composed of split ring resonators by using lumped capacitors", IEEE Antennas and Wireless Propagation Letters, vol. 11, pp. 1362-1365, 2012.
    • M. Ng Mou Kehn, “Moment method analysis of plane-wave scattering from planar corrugated surfaces using parallel-plate cavity Green's functions and derivation of analytic reflection-phase formulas for both polarizations and oblique azimuth planes”, Radio Science, vol. 47, RS3008, Jun 2012, doi:10.1029/2011RS004938 (17 pages).
    • M. Ng Mou Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Reconfigurable Loaded Planar Inverted F-Antenna Using Varactor Diodes”, IEEE Antennas and Wireless Propagation Letters, vol. 10, pp. 466-468, May 2011.
    • O. Quevedo-Teruel, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Dual-band patch antennas based on short-circuited split ring resonators”, IEEE Transactions on Antennas and Propagation, vol. AP-59, no. 8, pp. 2758-2765, Aug 2011.
    • M. Ng Mou Kehn and L. Shafai, “Wideband radiation enhancement of waveguide arrays operated as feeds for reflector antennas and phased arrays using matching covers composed of microstrip patch arrays and comparison with conventional dielectric sheath tuners”, Radio Science, vol. 45, RS1006, doi:10.1029/2008RS003961, Feb 2010 (19 pages).
    • M. V. Ivashina, M. Ng Mou Kehn, P.-S. Kildal, and R. Maaskant, “Reply to comments on ‘Decoupling efficiency of a wideband Vivaldi focal plane array feeding a reflector antenna’,” IEEE Transactions on Antennas and Propagation, vol. AP-58. no. 3, pp. 1016-1017, Mar 2010.
    • M. Ng Mou Kehn and L. Shafai, “Proper interpretation of source excitations for resolving ostensible excessive power gains of metamaterial resonances”, IET Electronics Letters, vol. 45, no. 12, pp. 599-601, Jun 2009.
    • M. Ng Mou Kehn and L. Shafai, “Improved matching of waveguide focal plane arrays using patch array covers as compared to conventional dielectric sheets”, IEEE Transactions on Antennas and Propagation, vol. AP-57, no. 10, pp. 3062-3076, Oct. 2009.
    • M. Ng Mou Kehn and L. Shafai, “Characterization of dense focal plane array feeds for parabolic reflectors in achieving closely-overlapping or widely-separated multiple beams”, Radio Science, vol. 44, RS3014, doi:10.1029/2008RS003953, Jun 2009. (25 pages) 
    • M. Ng Mou Kehn, M. V. Ivashina, P.-S. Kildal, and R. Maaskant, “Definition of unifying decoupling efficiency of different array antennas – case study of dense focal plane array feed for parabolic reflector”, International Journal of Electronics and Communications, May 2009. 
    • O. Quevedo-Teruel, E. Rajo-Iglesias, and M. Ng Mou Kehn, “Numerical and experimental studies of split ring resonators loaded on the sidewalls of rectangular waveguides”, IET Microwaves, Antennas & Propagation, vol. 3, no. 8, pp. 1262-1270, doi: 10.1049/iet-map.2008.0313, 2009.
    • E. Rajo-Iglesias, O. Quevedo-Teruel, and M. Ng Mou Kehn, “Multi-band SRR loaded rectangular waveguide”, IEEE Transactions on Antennas and Propagation, vol. AP-57, no. 5, pp. 1570-1574, May 2009. 
    • M. V. Ivashina, M. Ng Mou Kehn, P.-S. Kildal, and R. Maaskant, “Decoupling efficiency of a wideband Vivaldi focal plane array feeding a reflector antenna”, IEEE Transactions on Antennas and Propagation, vol. AP-57, no. 2, pp. 373-382, Feb 2009. 
    • A. Foroozesh, M. Ng Mou Kehn, and L. Shafai, “Application of artificial ground planes in dual-band orthogonally-polarized low-profile high-gain planar antenna design”, Progress in Electromagnetics Research (PIER), vol. PIER 84, pp. 407-436, 2008.
    • M. Ng Mou Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “Split ring resonator loaded waveguides with multiple stopbands”, IET Electronics Letters, vol. 44, no. 12, pp. 714-716, Jun 2008.
    • A. Foroozesh, L. Shafai, and M. Ng Mou Kehn, “Application of polarization and angular dependent artificial ground planes in compact planar high-gain antenna design”, Radio Science, vol. 43, RS6S03, doi:10.1029/2007RS003795, Nov 2008.
    • M. Ng Mou Kehn, L. Shafai, and S. Noghanian, “Permittivity measurement of disk and annular dielectric samples using coaxial transmission-line fixtures – Part I: Theory and formulation”, IEEE Canadian Journal of Electrical and Computer Engineering, vol. 34, no. 1-2, pp. 21-29, Winter/Spring, 2009.
    • M. Ng Mou Kehn, L. Shafai, F. Safari, and S. Noghanian, “Permittivity measurement of disk and annular dielectric samples using coaxial transmission-line fixtures – Part II: Simulation of the experimental procedure and accuracy analyses”, IEEE Canadian Journal of Electrical and Computer Engineering, vol. 34, no. 1-2, pp. 31-41, Winter/Spring, 2009.
    • M. Ng Mou Kehn, M. Nannetti, A. Cucini, S. Maci, and P.-S. Kildal, “Analysis of dispersion in dipole-FSS loaded hard rectangular waveguide,” IEEE Transactions on Antennas and Propagation, vol. AP-54, no. 8, pp. 2275-2282, Aug. 2006.
    • M. Ng Mou Kehn and P.-S. Kildal, “Miniaturized rectangular hard waveguides for use in multi-frequency phased arrays”, IEEE Transactions on Antennas and Propagation, vol. AP 53, no. 1, pp. 100-109, Jan 2005. 
    • J. Yang, U. Carlberg, P.-S. Kildal, and M. Ng Mou Kehn, “A fast mode analysis for waveguides of arbitrary cross section with multiple regions by using a spectrum of two-dimensional solutions and asymptotic waveform evaluation”, IEEE Transactions on Microwave Theory and Techniques, vol. MTT 52, no. 6, pp. 1615-1621, June 2004. 

  • 會議論文
    • M. Ng Mou Kehn and P.-S. Kildal, “Analyzing propagation characteristics of hard waveguides using FDTD”, Proc. IEEE AP-S Int. Symp. 2002, vol. 3, pp. 790-793, San Antonio, USA, Jun. 2002.
    • M. Ng Mou Kehn and P.-S. Kildal, “Study of propagation in compact hard quasi-TEM waveguides for use in multi-frequency antenna arrays”, Proc. Antenn 03 Nordic Antenna Symp., pp. 243-248, Kalmar, Sweden, May 2003.
    • M. Ng Mou Kehn and P.-S. Kildal, “Investigation of dielectric-loaded hard-walled rectangular waveguides using a numerical spectral domain technique”, Proc. IEEE AP-S Int. Symp. 2003, vol. 2, pp. 1157-1160, Columbus, USA, Jun. 2003.
    • M. Ng Mou Kehn and P.-S. Kildal, “The N-Guide: a novel miniaturized hard quasi-TEM waveguide”, Proc. IEEE AP-S Int. Symp. 2003, vol. 2, pp. 1111-1114, Columbus, USA, Jun. 2003.
    • M. Ng Mou Kehn and P.-S. Kildal, “Miniaturized hard waveguides for use in multi-frequency arrays”, Proc. 27th ESA Antenna Technology Workshop on Innovative Periodic Antennas: Electromagnetic Bandgap, Left-Handed Materials, Fractal and Frequency Selective Surfaces, Santiago de Compostela, Spain, Mar. 2004.
    • M. Ng Mou Kehn, P.-S. Kildal and S. P. Skobelev, “Miniaturized dielectric-loaded rectangular waveguides for use in multi-frequency arrays”, Proc. IEEE AP-S Int. Symp. 2004, vol. 1, pp. 803-806, Monterey, USA, Jun. 2004.
    • M. Ng Mou Kehn, M. Nannetti, S. Maci, and P.-S. Kildal, “Moment method computation of miniaturized rectangular hard waveguide with passband and stopband”, Proc. IEEE AP-S Int. Symp. 2005, vol. 2B, pp. 630-633, Washington DC, USA, Jul. 2005.
    • M. Ng Mou Kehn, S. Hrabar, S. Skokic, S. Maci, and P.-S. Kildal, “Experimental study of strip dipole FSS-loaded rectangular waveguide”, Proc. IEEE AP-S Int. Symp. 2005, vol. 2B, pp. 671-674, Washington DC, USA, Jul. 2005.
    • M. Ng Mou Kehn, S. Hrabar, S. Skokic, M. Nannetti, S. Maci, and P.-S. Kildal, “Transverse strip arrays used as hard surfaces and AMCs in miniaturized quasi-TEM waveguides”, EPFL LATSIS Symposium, Switzerland, 2005.
    • M. Ng Mou Kehn and P.-S. Kildal, “Fundamental limitations of focal plane arrays characterized in terms of radiation efficiencies of their embedded element patterns”, Proc. IEEE AP-S Int. Symp. 2006, pp. 4319-4322, Albuquerque, NM, USA, Jul. 2006.
    • M. V. Ivashina, M. Ng Mou Kehn, P.-S. Kildal, and R. Maaskant, “Control of reflection and mutual coupling losses in maximizing efficiency of dense focal plane arrays”, Proc. European Conference on Antennas and Propagation (EuCAP), 2006, Nice, France, Nov. 2006.
    • M. Ng Mou Kehn and E. Rajo-Iglesias, “Moment method analysis of dispersion in SRR-type FSS loaded rectangular waveguides using spectral domain Green’s functions and RWG basis functions”, Proc. IEEE AP-S Int. Symp. 2007, pp. 165-168, Honolulu, Hawaii, USA, Jun. 2007.
    • M. Ng Mou Kehn, E. Rajo-Iglesias, and O. Quevedo-Teruel, “Parametric study of dispersion and filtering capabilities of SRR-type FSS loaded rectangular waveguides”, Proc. IEEE AP-S Int. Symp. 2007, pp. 2365-2368, Honolulu, Hawaii, USA, Jun. 2007.
    • M. Ng Mou Kehn, L. Shafai, and S. Noghanian, “Accuracy improvement of a permittivity measurement technique for cylindrical dielectric samples”, Proc. International Symposium on Electromagnetic Theory (EMTS) 2007, Ottawa, ON, Canada, Jul. 2007.
    • M. V. Ivashina, M. Ng Mou Kehn, P.-S. Kildal, R. Maaskant, and M. Franzen, “Radiation efficiency as a fundamental limitation of wideband dense arrays for multi-beam applications”, Proc. 29th ESA Antenna Workshop on Multiple Beams and Reconfigurable Antennas, ESTEC, Noordwijk, The Netherlands, 18-20 Apr. 2007.
    • E. Rajo-Iglesias, M. Ng Mou Kehn, and O. Quevedo-Teruel, “Investigation of SRR-type FSS loaded rectangular waveguides with narrow backward traveling modal passband for use as waveguide filters”, Proc. URSI-CNC/USNC National Radio Science Meeting, Ottawa, ON, Canada, Jul. 2007.
    • M. V. Ivashina, M. Ng Mou Kehn, P.-S. Kildal, and R. Maaskant, “On the limitation of dense focal plane array feeds for multi-beam reflector antennas characterized by the radiation efficiency”, Proc. URSI-CNC/USNC National Radio Science Meeting, Ottawa, ON, Canada, Jul. 2007.
    • A. Foroozesh, M. Ng Mou Kehn, and L. Shafai, “Investigation of the soft/hard surface ground plane effects on far-field radiation properties of high-gain planar antennas with Hertzian dipole excitation”, Proc. URSI-CNC/USNC National Radio Science Meeting, Ottawa, ON, Canada, Jul. 2007.
    • M. V. Ivashina, M. Ng Mou Kehn, and P.-S. Kildal, “Optimal number of elements and element spacing of wide-band focal plane arrays for a new generation radio telescope”, Proceedings of European Conference on Antennas and Propagation (EuCAP), 2007, Edinburgh, UK, Nov. 2007.
    • E. Rajo-Iglesias, O. Quevedo-Teruel, and M. Ng Mou Kehn, “Optimized design of a miniaturized waveguide with SRR-loaded lateral walls”, Proceedings of European Conference on Antennas and Propagation (EuCAP), 2007, Edinburgh, UK, Nov. 2007.
    • M. Ng Mou Kehn, L. Shafai, F. Safari, and S. Noghanian, “Permittivity measurement of annular dielectric samples using a quadratic curve fitting technique”, Proc. IEEE AP-S Int. Symp. 2008, San Diego, CA, Jul. 2008.
    • M. Ng Mou Kehn, A. Foroozesh, and L. Shafai, “Parametric studies of high impedance AMC surfaces realized by periodic array of arbitrarily shaped metallizations printed over grounded dielectric substrates”, Proc. IEEE AP-S Int. Symp. 2008, San Diego, CA, Jul. 2008.
    • M. Ng Mou Kehn and L. Shafai, “Investigation of dielectric sheath and periodic microstrip patch arrays as matching layers over waveguide arrays”, IEEE AP-S Int. Symp. 2008, San Diego, CA, Jul. 2008.
    • M. Ng Mou Kehn, L. Shafai, and P.-S. Kildal, “Parametric characterization of parabolic reflector antennas fed by focal plane arrays”, submitted to IEEE AP-S Int. Symp. 2008, San Diego, CA, Jul. 2008.
    • M. Ng Mou Kehn and L. Shafai, “Off-axis beam efficiencies of parabolic reflectors fed by focal plane arrays comprising hard rectangular waveguides”, Proc. URSI General Assembly, 2008, Chicago, IL, Aug. 2008.
    • L. Shafai and M. Ng Mou Kehn, “Anomalous power radiation from material and metamaterial resonances”, Proceedings of International Symposium on Antennas and Propagation, 2008, Taipei, Taiwan, 27-30 Oct 2008.
    • L. Shafai and M. Ng Mou Kehn, “Source Excitation Effects on Power Radiation from Material and Metamaterial Resonances”, Proceedings in 13th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 15-18 Feb 2009.
    • M. Ng Mou Kehn, A. Foroozesh, and L. Shafai, “Parametric Study of EBG Bandwidth for Grounded Square Patch Arrays By Dispersion Analysis”, Proceedings in 13th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 15-18 Feb 2009.
    • L. Shafai, M. Ng Mou Kehn, and A. Foroozesh, “Relationship between the source excitation, electromagnetic field solutions and the resonance of modes in material structures”, IEEE AP-S Int. Symp. 2009, Charleston, SC, Jun 2009.
    • O. Quevedo-Teruel, M. Ng Mou Kehn, L. Inclán- Sánchez, and E. Rajo-Iglesias, “Optimization Considerations for the Design of Periodic Structures and Metamaterials”, Third Young Scientist Meeting on Metamaterials YSMM, 2009, Aula de Grados, Escuela Politecnica Superior, Universidad Carlos III de Madrid, Leganes (Madrid), Spain.
    • P.-S. Kildal and M. Ng Mou Kehn, “The ridge gap waveguide as a wideband rectangular hard waveguide”, Proceedings in European Conference on Antennas and Propagation 2010, 12-16 April 2010, Barcelona.
    • O. Quevedo-Teruel, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Compact SRR-shaped dual band patch antenna”, International Review of Progress in Applied Computational Electromagnetics ACES Symposium 2010, April 25–29, Tampere, Finland.
    • M. Ng Mou Kehn, M. Ivashina, and L. Shafai, “Performance of multi-beam reflectors fed by phased array feeds with impedance-matching layers”, Proceedings in IEEE AP-S Int. Symp. 2010, Toronto, ON, Canada, Jul. 2010.
    • O. Quevedo-Teruel, M. Ng Mou Kehn, E. Pucci, and E. Rajo-Iglesias, “On the increase of the effciency and bandwidth of compact PIFAs based on SRR by making use of lumped capacitors”, Proceedings in IEEE AP-S Int. Symp. 2010, Toronto, ON, Canada, Jul. 2010.
    • M. Ng Mou Kehn, E. Rajo-Iglesias, and O. Quevedo-Teruel, “Waveguide filters with multiple passbands and stopbands achieved by bed of nails implanted within sidewall dielectric loadings”, Proceedings in 14th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 5-9 Jul 2009, Ottawa, ON, Canada.
    • C. J. Sanchez-Fernandez, O. Quevedo-Teruel, J. Requena-Carrion, L. Inclan-Sanchez, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Reconfigurable multilayer patch antennas based on metamaterials”, Proceedings in European Conference on Antennas and Propagation 2010, 12-16 April 2010, Barcelona.
    • S.-Y. Yang, M. Ng Mou Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “A compact antenna based on SRR and spiral with increased bandwidth and radiation efficiency”, Proceedings in IEEE AP-S Int. Symp. 2011, Spokane, USA, Jul. 2011.
    • T.-L. Yen, M. Ng Mou Kehn, O. Quevedo-Teruel, and E. Rajo-Iglesias, “A new discovery for increasing the total efficiency of a multiband microstrip antenna using a modified split ring resonator with a configurable mechanism”, Proceedings in IEEE AP-S Int. Symp. 2011, Spokane, USA, Jul. 2011.
    • T.-L. Yen and M. Ng Mou Kehn, “Analysis of Surface-Wave Dispersion Properties of Infinite Planar Corrugated Surfaces Using Asymptotic Corrugations Boundary Conditions”, Proceedings in Asia-Pacific Microwave Conference (APMC) 2012, Dec 2012.
    • C.-J. Huang and M. Ng Mou Kehn, “Improved characterization of high impedance surfaces for better designs of low profile antennas”, Proceedings in Asia-Pacific Microwave Conference (APMC) 2012, Dec 2012.
    • Y.-C. Chiou and M. Ng Mou Kehn, “Modal analysis of a periodic array of metallic pins embedded within a grounded dielectric substrate entailing an asymptotic approach with vanishing unit-cell size”, Proceedings in Asia-Pacific Microwave Conference (APMC) 2012, Dec 2012.
    • P. C. Tsai and M. Ng Mou Kehn, "Compact Electromagnetic Bandgap Surfaces with Lumped Elements", Proceedings in Asia-Pacific Microwave Conference (APMC) 2012, Dec 2012.
    • M. Ng Mou Kehn, "Sectoral Band-Gap of Planar Corrugated Surfaces by Asymptotic Corrugations Boundary Conditions", Proceedings in IEEE AP-S Int. Symp. 2013, Florida, USA, Jul. 2013.
    • M. Ng Mou Kehn, T.-S. Chu Ko, Y.-H. Liang, and Y.-C. Chiou, "Asymptotic Methods for Rapid Field Solutions and Dispersion Analysis of Periodic Structures as Metamaterials", submitted to Asia-Pacific Radio Science Conference AP-RASC 2013, Taipei, Taiwan, Sept. 2013.
    • N. K. Yeh and M. Ng Mou Kehn, "Analysis of substrate integrated waveguides by asymptotic strips boundary conditions," Proceedings in IEEE AP-S Int. Symp. 2014, Memphis TN, USA, Jul. 2014.
    • Y. Liang and M. Ng Mou Kehn, "Analysis of strip grating structure with ASBC,"  Proceedings of International Symposium on Antennas and Propagation (ISAP) 2014, Kaohsiung, Taiwan, Dec 2014.
    • N. Yeh and M. Ng Mou Kehn, "Analysis of substrate integrated waveguides by transverse resonant technique," Proceedings of International Symposium on Antennas and Propagation (ISAP) 2014, Kaohsiung, Taiwan, Dec 2014.
    • W. C. Chao and M. Ng Mou Kehn, "An approximate method of obtaining surface-wave band gap from reflection phase plots for mushroom structures," Proceedings of International Symposium of Antennas and Propagation (ISAP) 2014, Kaohsiung, Taiwan, Dec 2014.
    • I. Shevchenko and M. Ng Mou Kehn, "Rapid surface-wave analysis of corrugated rods using asymptotic corrugations boundary conditions," Proc. IEEE Antennas Propag. Symp., 2015, Vancouver, B. C., Canada, Jul. 2015.
    • O. Quevedo-Teruel, M. Ebrahimpouri, and M. Ng Mou Kehn, "Planar lenses by tailoring holey waveguides," Proc. IEEE Int'l Sympos. Antennas Propag. & N. American Radio Sci. Meeting, Jul. 2015, Vancouver, B. C., Canada.
    • C. W. Pan, M. Ng Mou Kehn, and O. Quevedo-Teruel, "Microwave focusing lenses by synthesized with positive or negative refractive index split-ring resonantor materials," Proc. International Workshop on Electromagnetics (iWEM) 2015, Hsinchu, Taiwan, Nov. 2015.
    • Z. L. Chen, M. Ng Mou Kehn, and O. Quevedo-Teruel, "Artificial Maxwell fisheye lens design and synthesis with using metasurface structure," Proc. International Workshop on Electromagnetics (iWEM) 2015, Hsinchu, Taiwan, Nov. 2015.
    • K. H. Hsieh, M, Ng Mou Kehn, and O. Quevedo-Teruel, "The manipulation of surface plasmon polaritons and design of Luneburg lens based on periodic patch arrays," Proc. International Workshop on Electromagnetics (iWEM) 2015, Hsinchu, Taiwan, Nov. 2015.
    • C. J. Syue, M. Ng Mou Kehn, and O. Quevedo-Teruel, "Compact Mikaelian lens design using metasurface structure," Proc. International Symposium on Antennas & Propagation (ISAP) 2016, Okinawa, Japan, Oct. 2016. 
    • E. Rajo-Iglesias and M. Ng Mou Kehn, "Applications of soft and hard surfaces in the era of metamaterials", Proceedings in European Conference on Antennas and Propagation 2017, Paris, France, 19-24 March 2017.
    • Y.-C. Yang and M. Ng Mou Kehn, "Analysis of strip-grated conducting rod using asymptotic strip boundary conditions," Proc. IEEE Int'l Sympos. Antennas Propag. & N. American Radio Sci. Meeting, Jul. 2018, Boston, MA, USA.
    • H.-C. Chou and M. Ng Mou Kehn, "Compact double-focus generalized Luneburg lens synthesized by metasurfaces," Proc. Asia Pacific Wireless Communications Symposium (APWCS), Hsinchu, Taiwan, Aug 22-24, 2018.
    • J.-W. Yang and M. Ng Mou Kehn, "Analysis of longitudinally corrugated cones using asymptotic corrugation boundary conditions," Proc. Asia Pacific Wireless Communications Symposium (APWCS), Hsinchu, Taiwan, Aug 22-24, 2018.
    • C.-F. Chin and M. Ng Mou Kehn, "Modal analysis of longitudinal corrugated rods using asymptotic boundary conditions," Proc. International Symposium on Antennas & Propagation (ISAP) 2018, Busan, S. Korea, Oct. 2018.
    • W.-Y. Lai and M. Ng Mou Kehn, “Analysis of rotated corrugated parallel plate waveguide using asymptotic corrugation boundary conditions, ” Proc. IEEE Int'l Sympos. Antennas Propag. & N. American Radio Sci. Meeting, Jul. 2019, Atlanta, GA, USA.
    • C.-K. Hsieh, M. Ng Mou Kehn, and E. Rajo-Iglesias, “Design of a transverse slot array in groove gap waveguide using horns at 28 GHz band,” ” Proc. IEEE Int'l Sympos. Antennas Propag. & N. American Radio Sci. Meeting, Jul. 2019, Atlanta, GA, USA.
    • T. -H. Ko, W. -M. Hsu, P. -L. Kao, M. N. Mou Kehn, H. -T. Chou and M. Ivashina, "Millimeter Wave Antennas Using Gap Waveguides with Beam Steerability at Fixed Frequencies for Beyond 5G Mobile Communications," 2021 International Symposium on Antennas and Propagation (ISAP), Taipei, Taiwan, 2021, pp. 1-2, doi: 10.23919/ISAP47258.2021.9614494.
    • M. V. Ivashina, A. R. Vilenskiy, H.-T. Chou, J. Oberhammer, and M. Ng Mou Kehn, “Antenna technologies for beyond-5G wireless communications,” Proc. Int. Symp. Antennas Propag., Taipei, Taiwan, 2021, pp. 1-2.
    • Y.-Z. Tsai, A. Vilenskiy, M. Ivashina, and M. Ng Mou Kehn, “Millimeter-wave holographic metasurface leaky-wave multi-beam antennas with gain and polarization control”, Proc. IEEE Int'l Sympos. Antennas Propag. & N. American Radio Sci. Meeting, Jul. 2023, Portland, OR, USA.
    • V. Chernikov, A. Vilenskiy, S. Agneessens, L. Manholm, M. Ng Mou Kehn, and M. Ivashina, “A Teflon-filled open-ended circular waveguide focal plane array used for sway compensation in W-band 50dB-gain backhaul reflector antennas,” Proc. International Conference on Electromagnetics in Advanced Applications (ICEAA) 2023, Venice, Italy, Oct. 2023. 
    • A.-C. Li, P.-H. Wang, and M. Ng Mou Kehn, “Analysis of rotated strip gratings for synthesis of holographic leaky wave antennas”, Proc. Asia Pacific Microw. Conf. (APMC) 2023, Taipei, Dec. 2023.

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