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Impedance and polarization characteristics of H and IHI slot antennas

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2 Author(s)
Porter, B.G. ; Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA ; Gearhart, S.S.

Slot antennas can be end loaded to tune input impedance for use with active devices and to decrease overall slot length at a given resonant frequency. Cross polarization and impedance of end-loaded slots in an H configuration are analyzed. For an H antenna of approximately equal height and width, D-plane cross polarization was found to be -20 dB, and the resonant frequency decreased by 34% over a slot with a length equal to the width of the H. The cross polarization can be reduced with our new IHI configuration, which is introduced. The impedance at the second resonance can be tuned over a range of 26-82 Ω.

Published in:
Antennas and Propagation, IEEE Transactions on  (Volume:48 ,  Issue: 8 )

Date of Publication: Aug 2000

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