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Antenna characteristics in practical applications

  • Jacob W.M. Baars
Part of the Astrophysics and Space Science Library book series (ASSL, volume 348)

Abstract

After the development of the basic equations, we now turn to application of these to practical situations in antenna theory, like calculations of efficiency, beamwidth and sidelobe level as well as the influence of defocus and other errors on the antenna’s characteristics. We shall develop formalisms and present results which are of use in the daily work of the antenna engineer and the radio astronomer.

Keywords

Phase Error Beam Width Main Beam Sidelobe Level Uniform Illumination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Baars, J.W.M., Dual-beam parabolic antennae in radio astronomy, Groningen, Wolters-Noordhof, 1970.Google Scholar
  2. Baars, J.W.M., The Measurement of large Antennas with cosmic Radio Sources, IEEE Trans. Antennas Propagat. AP-21, 461–474, 1973 [Gold, 171].CrossRefADSGoogle Scholar
  3. Born, M. and E. Wolf, Principles of Optics, 6th Ed. Oxford, Pergamon, 1980.Google Scholar
  4. Bracewell, R.N., Tolerance theory of large antennas, IEEE Trans. Antennas Propagat. AP-9, 49–58, 1961.CrossRefADSGoogle Scholar
  5. Cheng, J. and J.G. Mangum, Feed leg blockage and ground radiation pickup for Cassegrain antennas, MMA - Memo 197, 1998.Google Scholar
  6. Cogdell, J.R. and J.H. Davis, Astigmatism in reflector antennas, IEEE Trans. Antennas Propagat. AP-21, 565–567, 1973.CrossRefADSGoogle Scholar
  7. Emerson, D., Astigmatism measurements, NRAO/ALMA Internal Report, 2006Google Scholar
  8. Greve, A. and B.G. Hooghoudt, Quality evaluation of radio reflector surfaces, Astron. Astrophys. 93, 76–78, 1981 [Gold, 197].ADSGoogle Scholar
  9. Greve, A., Strehl number degradation by large-scale systematic surface deviations (on optical and radio reflectors), Appl. Opt. 19, 2948–2951, 1980.ADSCrossRefGoogle Scholar
  10. Greve, A., B. LeFloch, D. Morris, H. Hein and S. Navarro, Astigmatism in reflector antennas - Measurement and correction, IEEE Trans Antennas Propag. 42, 1345–1350, 1994.CrossRefADSGoogle Scholar
  11. Hartmann, D., P.M.W. Kalberla, W.B. Burton and U. Mebold, Stray radiation correction as applied to the Leiden/Dwingeloo survey of HI in the Galaxy, Astron. Astrophys. Suppl. Ser. 119, 115–151, 1996.CrossRefADSGoogle Scholar
  12. Hoerner, S. von, Measuring the gravitational astigmatism of a radio telescope, IEEE Trans. Antennas Propagat. AP-26, 315–318, 1978.CrossRefADSGoogle Scholar
  13. Jahnke, E. and F. Emde, Tables of functions, 4th Ed., New York, Dover, 1945.MATHGoogle Scholar
  14. Kraus, J.D., Radio Astronomy, New York, McGraw-Hill, 1966.Google Scholar
  15. Maanders, E.J., Enige aspecten van grondstation Antennes voor Satelliet Communicatie, Dissertation University of Gent, Belgium, 1975.Google Scholar
  16. Rusch, W.V.T., O. Sorensen and J.W.M. Baars, Radiation cones from feed-support struts of symmetric paraboloidal antennas, IEEE Trans. Antennas Propag. AP-30, 786–790, 1982.CrossRefADSGoogle Scholar
  17. Ruze, J., The effect of aperture errors on the antenna radiation pattern, Suppl. al Nouvo Cimento 9, 364–380, 1952.CrossRefGoogle Scholar
  18. Ruze, J., Lateral feed displacement in a paraboloid, IEEE Trans. Antennas Propagat. AP-13, 660–665, 1965.CrossRefADSGoogle Scholar
  19. Ruze, J., Antenna tolerance theory - a review, Proc. IEEE 54, 633–640, 1966 [Gold, 185].CrossRefGoogle Scholar
  20. Ruze, J., Feed support blockage loss in parabolic antennas, Microwave J., pp. 76–80, Dec. 1968 [Gold, 77].Google Scholar
  21. Scheffler, H., Über die Genauigkeitsanforderungen bei der Herstellung optischer Flächen für astronomische Teleskope, Z. Astrophys. 55, 1–20, 1962.MATHADSGoogle Scholar
  22. Silver, S., Microwave Antenna Theory and Design, MIT Rad. Lab Series 12, New York, McGraw-Hill, 1949.Google Scholar

Copyright information

© Springer 2007

Authors and Affiliations

  • Jacob W.M. Baars
    • 1
  1. 1.European Southern ObservatorySwisttal/BonnGermany

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