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PIER PIER B PIER C PIER M PIER Letters
2005-08-23
Microstrip Line and CPW Fed Ultra Wideband Slot Antennas with U-Shaped Tuning Stub and Reflector
By
Ricky Chair,

    Dr. Ricky Chair

    Department of Electrical Engineering and Center for Applied Electromagnetic Systems Research (CAESR)

    University of Mississippi

    USA

    Homepage

Ahmed Kishk,

    Professor Ahmed Kishk

    Department of Electrical Engineering

    University of Mississippi

    USA

    Homepage

Kai-Fong Lee,

    Professor Kai-Fong Lee

    Department of Electrical Engineering

    The University of Mississippi

    USA

    Homepage

Charles Smith,

    Dr. Charles Smith

    Department of Electrical Engineering

    University of Mississippi

    USA

    Homepage

Darko Kajfez

    Dr. Darko Kajfez

    Department of Electrical Engineering and Center for Applied Electromagnetic Systems Research (CAESR)

    University of Mississippi

    USA

    Homepage

, Vol. 56, 163-182, 2006
doi:10.2528/PIER05060701
Abstract
Wideband printed rectangular slot antennas backed with reflectors for unidirectional radiation patterns are investigated. A U- shaped tuning stub is used to improve the matching. Two different feeding mechanisms are introduced. A rectangular slot excited by microstrip line feed with a U-shaped tuning stub gives an impedance bandwidth of 110% ( |S11| < −10 dB). When the rectangular slot is excited by a coplanar waveguide (CPW), it gives an impedance bandwidth of 120%. Both slot antennas radiate broadside across the matching band, with front-to-back ratios of 20 dB.
Citation
Ricky Chair, Ahmed Kishk, Kai-Fong Lee, Charles Smith, and Darko Kajfez, "Microstrip Line and CPW Fed Ultra Wideband Slot Antennas with U-Shaped Tuning Stub and Reflector," , Vol. 56, 163-182, 2006.
doi:10.2528/PIER05060701
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19. IE3D 10.1, Zeland Software Inc., Fremont, CA..

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