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X-band directive single microstrip patch antenna using dielectric parasite

X-band directive single microstrip patch antenna using dielectric parasite

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A new method to enhance the gain of a single microstrip patch antenna using spaced superstates as a dielectric parasite is presented. The experimental results of radiation pattern using alumina parasites with different thicknesses and spacings are given. The minimum beamwidth obtainable with a single patch using present studies is only 18° with symmetric lobes in the H and E planes. This simple method can also be used to vary the beamwidth of the patch between 18 and 125° with proper choice of parasite parameters.

References

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      • R.Q. Lee , F.K. Lee , Bobinckok . Characteristics of a two layer electromagnetically coupled rectangular patch antenna. Electron. Lett. , 1070 - 1072
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      • R.Q. Lee , K.F. Lee . Gain enhancement of microstrip antennas with overlaying parasitic directors. Electron. Lett. , 11 , 656 - 658
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      • A. Hendersen , J.R. James , A. Fray . Magnetised microstrip antenna with pattern control. Electron. Lett. , 1 , 45 - 47
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      • R. Afzalzadeh , R.N. Karekar . Effect of dielectric protecting superstate on radiation pattern of microstrip patch antenna. Electron. Lett. , 13 , 1218 - 1219
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      • Afzalzadeh, R.: `Studies on the effects of overlays on microstrip patch antenna and rejection filter', 1991, Ph.D. dissertation, Poona University, Physics Department, Pune, India, 411007.
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