Vol. 17

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2011-02-14

Accurate Modeling of Coupling Junctions in Dielectric Covered Waveguide Slot Arrays

By Giuseppe Mazzarella and Giorgio Montisci
Progress In Electromagnetics Research M, Vol. 17, 59-71, 2011
doi:10.2528/PIERM10122804

Abstract

This paper investigate the near-field interaction between the coupling slot and the radiating ones in a dielectric-covered waveguide slot array environment. This interaction can strongly affect the array aperture distribution and input match, mainly when each radiating guide contains few slots or the slot offsets are small. We propose a full-wave Method of Moments approach, taking also into account the waveguide wall thickness, to evaluate this interaction. The use of entire domain basis functions allows to get a small and well-conditioned linear system. The results presented in this paper show that the coupling due to high-order modes in the region of the junction can significantly modify the radiating slot voltage, mainly when the offset is small, and also the array input match, though to a lesser extent.

Citation


Giuseppe Mazzarella and Giorgio Montisci, "Accurate Modeling of Coupling Junctions in Dielectric Covered Waveguide Slot Arrays," Progress In Electromagnetics Research M, Vol. 17, 59-71, 2011.
doi:10.2528/PIERM10122804
http://www.jpier.org/PIERM/pier.php?paper=10122804

References


    1. Elliott, R. S., "An improved design procedure for small arrays of shunt slots," IEEE Trans. Antennas Propagat., Vol. 31, 48-53, 1983.
    doi:10.1109/TAP.1983.1143002

    2. Elliott, R. S. and W. R. O'Loughlin, "The design of slot arrays including internal mutual coupling," IEEE Trans. Antennas Propagat., Vol. 34, 1149-1154, 1986.
    doi:10.1109/TAP.1986.1143947

    3. Mazzarella, G. and G. Panariello, "Evaluation of the edge effects in slot arrays using the geometrical theory of diffraction," IEEE Trans. Antennas Propagat., Vol. 37, 392-395, 1989.
    doi:10.1109/8.18737

    4. Rengarajan, R. S. and G. M. Shaw, "Accurate characterization of coupling junctions in waveguide-fed planar slot arrays," IEEE Trans. Microwave Theory Technique, Vol. 42, 2239-2247, 1994.
    doi:10.1109/22.339748

    5. Katehi, P. B., "Dielectric-covered waveguide longitudinal slots with finite wall thickness," IEEE Trans. Antennas Propagat., Vol. 38, 1039-1045, 1990.
    doi:10.1109/8.55615

    6. Mazzarella, G. and G. Montisci, "A rigorous analysis of dielectric-covered narrow longitudinal shunt slots with finite wall thickness," Electromagnetics, Vol. 19, 407-418, 1999.
    doi:10.1080/02726349908908660

    7. Mazzarella, G. and G. Montisci, "Full-wave analysis of dielectric-covered radiating series slots," Microwave and Optical Technology Letters, Vol. 20, 67-72, 1999.
    doi:10.1002/(SICI)1098-2760(19990105)20:1<67::AID-MOP18>3.0.CO;2-5

    8. Mondal, M. and A. Chakraborty, "Resonant length calculation and radiation pattern synthesis of longitudinal slot antenna in rectangular waveguide," Progress In Electromagnetics Research Letters, Vol. 3, 187-195, 2008.
    doi:10.2528/PIERL08042204

    9. Mazzarella, G. and G. Montisci, "Wideband equivalent circuit of a centered-inclined waveguide slot coupler," Journal of Electromagnetic Waves and Applications, Vol. 14, No. 1, 133-151, 2000.
    doi:10.1163/156939300X00671

    10. Casula, G. A., G. Mazzarella, and G. Montisci, "Effective analysis of a microstrip slot coupler," Journal of Electromagnetic Waves and Applications, Vol. 18, No. 9, 1203-1217, 2004.
    doi:10.1163/1569393042955333

    11. Zawadzki, M. , S. Rengarajan, R. E. Hodges, and J. Chen, "Lowsidelobe slot arrays for the Juno microwave radiometer," IEEE Antennas and Propagat. Society Int. Symp., Vol. 1, 1-4, 2010.
    doi:10.1109/APS.2010.5561812

    12. Casula, G. A. and G. Montisci, "Design of dielectric-covered planar arrays of longitudinal slots," IEEE Antennas and Wireless Propagation Letters, Vol. 8, 752-755, 2009.
    doi:10.1109/LAWP.2009.2021963