Design, Simulation And Fabrication of A Low-Cost Smart Antenna with High Radiation Pattern Diversity

Document Type : Original Article

Authors

1 imam Hussein university M.sc. student

2 imam hussain university

3 ihu

Abstract

In this paper a low profile, low-cost smart antenna which has a high gain and high radiation pattern diversity is presented. This antenna is actually an advanced ESPAR antenna which is made up of a “short monopole” and 12 “folded monopoles”. The short monopole is in the center and is used as the driven element and the 12 folded monopoles are used as parasitic elements. The coupling between the driven element and the parasitic elements creates a capacitive load for the driven element, which causes the antenna to become low-profile. By turning on and off 12 "PIN diodes" at the bottom of the parasitic elements, the beam can be rotated. The dimensions of the proposed antenna fabricated in the S band are reduced by 30% compared to the conventional smart antennas of this band. The antenna height is less than 24mm (0.186λ @ 2.4 GHz), the front to back ratio is 22.4dB and antenna's maximum gain at 2.4GHz is 8.26dBi.

Keywords

References

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History

  • Receive Date: 07 January 2019
  • Revise Date: 19 February 2019
  • Accept Date: 06 March 2019

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