An ultra-wide band printed small aperture tapered slot phased array antenna covering 6-18GHZ


  • G. NagaPavani V.R.Siddhartha Engineering College
  • Ch. Lakshmi Prasanna V.R.Siddhartha Engineering College
  • Dr. N.N. Sastry V.R.Siddhartha Engineering College





Ultra Wideband, Phased Arrays, Printed Tapered Slot Antenna, Parametric Analysis, Grating Lobes.


For phased array applications covering ultra wide bandwidth, it is necessary to restrict the size of the aperture to less than λ/2 at highest frequency of operation. For 6-18 GHz coverage, an aperture size of less than 9.76mm is required for scanning to ±450 without appearance of grating lobes and occurrence of element pattern nulls over the band. Meeting this requirement a printed tapered slot antenna has been designed with the above aperture size. Detailed parametric studies have been carried out over 6-18 GHz and dimensions have been opti-mized for return loss. The design has been carried out with HFSS software. A return loss of less than -7.5dB across 5.6 - 20 GHz has been obtained for a single antenna. Also satisfactory radiation patterns have been obtained.



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