Electromagnetic theory of the reflector antenna

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


In this chapter we develop the general theory of the reflector antenna with a primary source of radiation (the “feed”) in the focal point. We will not attempt to present a full rigorous theory of the radiation characteristics over the entire space around the antenna. Rather our primary interest is to find a representation of the radiation pattern in a limited solid angle around the boresight axis with a sufficient accuracy to reliably derive the important antenna parameters, as gain, sidelobe level, beam efficiency, etc. We include the influence of the finite distance of the field-point from the antenna. Thus we describe the radiation function both in the Fraunhofer (farfield) region at infinite distance, as well as in the Fresnel region, where the distance to the field point is finite.


Field Point Electromagnetic Theory Radiation Function Aperture Distribution Reflector Antenna 
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Copyright information

© Springer 2007

Authors and Affiliations

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

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