CROSS-POLARIZATION REDUCTION FOR COMPACT OFFSET REFLECTOR ANTENNA USING CONJUGATE FEED

Authors

  • Balvant J. Makwana Asst Asst Prof, EC Department Government Engineering College, Rajkot, Gujarat, India
  • S. B.Sharma Former outstanding scientist, SAC, ISRO, Ahmedabad, Gujarat, India

Keywords:

horn; conjugate feed; cross polarization; compact offset reflector antenna; , multimode horn

Abstract

This paper presents the design of a conjugate matched feed to get significant cross polar level reduction in
secondary field pattern of offset reflector antenna system having very low F/D. This kind of feed will be advantageous in
many practical applications where the available space and weight for antenna structure is limited. The conjugate feed is
implemented in cylindrical waveguide by utilizing higher order modes, and in addition to fundamental
mode with proper amplitude and phase. The designed conjugate feed was then used to illuminate offset parabolic
reflector antenna with F/D of 0.4 and offset angle of 90 degree, the secondary far field radiation patterns were
computed. It is shown that significant reduction in the cross polarization level is observed compared to that of
illumination of offset reflector by conventional feed

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Published

2018-04-25

How to Cite

Balvant J. Makwana, & S. B.Sharma. (2018). CROSS-POLARIZATION REDUCTION FOR COMPACT OFFSET REFLECTOR ANTENNA USING CONJUGATE FEED. International Journal of Advance Engineering and Research Development (IJAERD), 5(4), 317–320. Retrieved from https://www.ijaerd.org/index.php/IJAERD/article/view/3065

Issue

Vol. 5 No. 4 (2018): Volume 5 Issue 4 April 2018

Section

Articles