International Journal of Infrared and Millimeter Waves

, Volume 18, Issue 9, pp 1697–1711 | Cite as

Characterization of corrugated feed horns at 216 and 300 GHz

  • M. T. Chen
  • C. -Y. E. Tong
  • S. Paine
  • R. Blundell


We present measurements of the near-field beam profiles of two corrugated feed horns with center frequencies of 216 and 300 GHz. Both co-polar and cross-polar components of the electric field have been probed across the operation band of the horns. A full-wave numerical near-field transformation, based on a vector Kirchhoff integral, is implemented to transform the measured field to the horn aperture for a comparison with the ideal aperture field. From the overlap integral of the transformed and the ideal field, we conclude that the field radiated by these horns is the HE11 mode, to a purity of better than 99%.


corrugated feed horn near-field measurement Kirchhoff integral 


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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • M. T. Chen
    • 1
  • C. -Y. E. Tong
    • 2
  • S. Paine
    • 2
  • R. Blundell
    • 2
  1. 1.Institute of Astronomy and AstrophysicsAcademia SinicaTaipeiTaiwan 115
  2. 2.Harvard-Smithsonian Center for AstrophysicsCambridgeUSA

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