All Stories

  1. A miniature hext-band bandpass microstrip filter using stepped-impedance spiral resonators

    Article • Microwave and Optical Technology Letters, May 2015, Wiley

    Dr Z. M. Hejazi

  2. Reconfigurable multiband bandpass filters using short bridges resembling MEMS or pin diodes

    Article • December 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  3. Multiband bandpass filters with suppressed harmonics using a novel defected ground structure

    Article • Microwave and Optical Technology Letters, August 2014, Wiley

    Dr Z. M. Hejazi

  4. A fast design approach of compact microstrip multiband bandpass filters

    Article • Microwave and Optical Technology Letters, February 2012, Wiley

    Dr Z. M. Hejazi

  5. EM FULL-WAVE ANALYSIS AND TESTING OF NOVEL QUASI-ELLIPTIC MICROSTRIP FILTERS FOR ULTRA NARROWBAND FILTER DESIGN

    Article • Progress In Electromagnetics Research, January 2008, EMW Publishing

    Dr Z. M. Hejazi

  6. Design and Measurement of Self-Matched Dual-Frequency Coplanar Waveguide-Fed-Slot Antennas

    Article • IEEE Transactions on Antennas and Propagation, January 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  7. Modeling and simulation of novel ultra-narrowband miniature microstrip filters for mobile and wireless critical applications

    Article • Microwave and Optical Technology Letters, January 2005, Wiley

    Dr Z. M. Hejazi

  8. A new model to calculate the coupling coefficient for more accurate filter design and further development of narrowband-filter performance

    Article • Microwave and Optical Technology Letters, January 2005, Wiley

    Dr Z. M. Hejazi

  9. Lumped-element microstrip narrow bandpass tunable filter using varactor-loaded inductors

    Article • International Journal of Electronics, January 2003, Taylor & Francis

    Dr Z. M. Hejazi

  10. A hybrid CPW-to-slot dual-spiral antenna radiator for circular polarization

    Article • International Journal of Electronics, August 2002, Taylor & Francis

    Dr Z. M. Hejazi

  11. Compact superconducting dual-log spiral resonator with high Q-factor and low power dependence

    Article • IEEE Transactions on Applied Superconductivity, June 2002, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  12. Miniature HTS spiral cavity resonator for mobile telephone bands

    Article • International Journal of Electronics, January 1999, Taylor & Francis

    Dr Z. M. Hejazi

  13. Electrically small resonator using thick-film high-T/sub c/ superconducting wire helix

    Article • IEEE Transactions on Applied Superconductivity, January 1999, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  14. Corrections To "Accurate Distributed Inductance Of Spiral Resonators"

    Article • IEEE Microwave and Guided Wave Letters, June 1998, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  15. Accurate distributed inductance of spiral resonators

    Article • IEEE Microwave and Guided Wave Letters, April 1998, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  16. Compact dual-mode filters for HTS satellite communication systems

    Article • IEEE Microwave and Guided Wave Letters, January 1998, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi

  17. Calculation of distributed capacitances of spiral resonators

    Article • IEEE Transactions on Microwave Theory and Techniques, January 1997, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Z. M. Hejazi