CONTENTS

 1 Introduction  1
2 Technical considerations for multiple-feed receiving earth station antennas  2
       2.1 Antenna beam performance  2
       2.2 Inherent mis-pointing  3
3 Antenna beam plots for multiple-feed 12 GHz BSS receiving earth station antennas  4
        3.1 Dual-feed receiving antenna  4
       3.2 Triple-feed receiving antenna  6
        3.3 Five-feed receiving antenna  8
 4     Conclusions  10