Conformal Leaky Wave Antennas Based on SIW Structure with Circular Polarization

Document Type : Original Article

Authors

1 PhD student, Semnan University, Semnan, IranEngineering.Tehran.Iran.

2 Associate Professor, Semnan University, Semnan, Iran

3 Associate Professor, Shahid Sattari Aviation University, Tehran, Iran

4 Assistant Professor, Shahid Sattari Aviation University, Tehran, Iran

Abstract

In this article, a conformal leaky wave antenna with a substrate-integrated waveguide (SIW) structure on a new unit cell substrate is presented. The use of this new method eliminates the main problem of this type of antenna, which is the existence of a stop band (OSB), and enables the antenna to radiate in Broadside as well. In this article, after introducing the new unit cell, a flat leaky wave antenna with an integrated waveguide structure under the layer, which is able to continuously scan from -76.6 to +27 degrees by changing the feeding frequency, was designed and investigated. At the end, the proposed flat antenna is adapted on the surface of a cylinder with a radius of 425 mm. A conformal leaky wave antenna is able to continuously scan from -43 to +37 degrees by changing the feeding frequency. As a result, a scan with circular polarization from negative to positive angles, which also includes broadside radiation, has been obtained.

Keywords

Smiley face

References

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Radar
Volume 11, Issue 1
Serial number 29, spring and summer quarterly
August 2023
Pages 107-117

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History

  • Receive Date: 06 April 2023
  • Revise Date: 07 July 2023
  • Accept Date: 25 July 2023
  • Publish Date: 24 August 2023

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