M.S. Kheir, H.F. Hammad, and A. Omar, "Broadband material characterization using traveling-wave whispering-gallery-mode dielectric resonators," Progress In Electromagnetics Research B, vol. 43, pp. 35-52, 2012.
 A. Boutejdar, A. Omar, and E. Burte, "Compensating for DGS filter loss," Microwaves & RF, vol. 3, February 2012.
 A. Boutejdar and A. Omar, "Design, Entwicklung, und Realisierung des DMS-DGS-Mikrostreifen-Filters," Radar, Communication and Measurement, RADCOM 2012 (Hamburg, Germany), 2012.
 A. Boutejdar, A. Omar, E. Burte, and A. Batmanov, "Design of a new wide stop band low pass filter using a vertically coupled DMS-DGS-resonators and interdigital capacitors," EUROEM 2012 (Toulouse, France), 2012.
 A. Boutejdar, S. Boutejdar, A. Omar, and E. Burte, "Design of Planar/Coplanar Compact Band-Stop Filter Using SGS Resonators and Multi-Interdigital Capacitors," Recent Patents on Electrical & Electronic Engineering, vol. 5, pp. 207-210, 2012.
 B. Panzner, A. Jöstingmeier, and A. Omar, "A novel multimodal waveguide technique for the broadband characterization of dielectric material parameters," 9th International Multi-Conference on Systems, Signals and Devices, SSD 2012 (Chemnitz, Germany), 2013.
 B. Panzner, A. Jöstingmeier, and A. S. Omar, "Investigation on the aperture size for SAR focusing of subsurface targets," 13th International Radar Symposium, IRS 2012 (Warsaw, Poland), 2012, pp. 450-453.
 A. Gaber and A. Omar, "Fundamentals of position estimation techniques," in Workshop on Wireless Positioning and Tracking in Indoor and Urban Environments: Methods, Architectures and Applications, IEEE MTT-S Symp. (Montreal), 2012.
 A. Gaber and A. Omar, "Sub-nanosecond accuracy of TDOA estimation using matrix pencil algorithms and IEEE 802.11," International Symposium on Wireless Communication Systems, ISWCS (Paris), 2012, pp. 646-650.
 A. Gaber and A. Omar, "A study of TDOA estimation using matrix pencil algorithms and IEEE 802.11ac," Ubiquitous Positioning, Indoor Navigation and Location Based Service, UPINLBS (Helsinki), 2012, pp. 1-8.
 M. Challal, A. Boutejdar, M. Dehmas, A. Azrar, and A. Omar, "Compact microstrip low-pass filter design with ultra-wide reject band using a novel quarter-circle DGS shape," ACES Journal, vol. 27, pp. 808–815, 2012.