The effect of loading Gregorian antennas on side-lobe levels

AFACAN E., Yazgan E.

CANADIAN JOURNAL OF PHYSICS, cilt.74, ss.685-691, 1996 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 74
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1139/p96-098
  • Dergi Adı: CANADIAN JOURNAL OF PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.685-691
  • Gazi Üniversitesi Adresli: Hayır

Özet

E- and H-plane radiation patterns of focus-fed, axially symmetric Gregorian antennas are analyzed using the generalized method of the geometrical theory of diffraction. Only the rim of the main reflector was loaded; in a smoothly tapered manner, but the whole surface of the subreflector was loaded. Loads are defined in terms of surface impedances. With the help of this analysis, the effect of the smoothly tapered rim loading on the far-field radiation patterns of Gregorian antennas can be studied in detail.