Advertisement

Shaped Corrugated Horns for Cosmic Microwave Background Anisotropy Measurements

  • B. Maffei
  • P. A. R. Ade
  • C. E. Tucker
  • E. Wakui
  • R. J. Wylde
  • J. A. Murphy
  • R. M. Colgan
Article

Abstract

Novel corrugated horn have been modelled, manufactured and measured which give low-sidelobe patterns required by CMB Anisotropy experiments. These horns have a Back-to-Back structure with mode filtering at their centres. They are corrugated to give axial symmetric low-sidelobe patterns, profiled to reduce their length, and have a Gaussian flare at their entrance apertures to further suppress sidelobes to -40dB. Modelling and experimental results show excellent agreement to well below 50 dB.

anisotropy Back-to-Back CMB corrugated gaussian profile 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    HFI — Planck surveyor answer to ESA AO, Feb 98Google Scholar
  2. [2]
    S.E. Church et al, “A compact high-efficiency feed structure for Cosmic Microwave Background Astronomy at millimetre wavelengths”, 30th ESLAB symposium, ESA-ESTEC 1996.Google Scholar
  3. [3]
    R. Gonzalo et al, “New approach to the design of corrugated horn antennas”, 20th ESTEC Antenna workshop, 1997Google Scholar
  4. [4]
    C. del Rio et al, "Optimal Antenna Horn Design to Excite High-Order Gaussian Beam Modes from TE0m Smooth Circular Waveguide Modes", IEEE Transactions Antennas & Propagation, AP-47, 1440, 1999.Google Scholar
  5. [5]
    P.J.B. Clarricoats and A.D. Olver, "Corrugated Horns for Microwave antennas", IEE Electromagnetic Waves Series 18, Peter Peregrinus (London), 1984.Google Scholar
  6. [6]
    A.D. Olver et al, "Microwave Horns and Feeds", IEE Electromagnetic Waves Series 39, IEEE Press, 1994.Google Scholar
  7. [7]
    R. Colgan et al, "A scattering matrix description of partially coherent few-moded corrugated horn antennas", 11th International Symposium on Space Terahertz Technology, Ann Arbor, Michigan, May 2000.Google Scholar
  8. [8]
    R.J. Wylde and D.H. Martin, "Gaussian beam mode analysis and phase centres of corrugated horns", IEEE Trans. Microwave Theory Tech., MTT-41, 1691, 1991.Google Scholar

Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • B. Maffei
    • 1
  • P. A. R. Ade
    • 1
  • C. E. Tucker
    • 1
  • E. Wakui
    • 1
  • R. J. Wylde
    • 1
  • J. A. Murphy
    • 2
  • R. M. Colgan
    • 2
  1. 1.Physics DepartmentQueen Mary and Westfield CollegeLondonEngland
  2. 2.Experimental Physics DepartmentNational University of IrelandMaynoothIreland

Personalised recommendations