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Horn Antennas

Horn Antennas

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Horn Antennas

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  1. Horn Antennas INEL 6069 Dr. Sandra Cruz-Pol ECE, UPRM CAPT 13

  2. Horn Antennas • Invented in late 1800’s. Studied in 1930’s • Most widely used microwave antenna • Used as feed element • Radio astronomy • Satellite tracking • Communication dishes • Universal standard for calibration and gain measurement of other antennas.

  3. Types • H-plane • E-plane • Pyramidal • Conical

  4. H-plane horn Antenna l/bDH a1 /l

  5. Directivity - H-plane horn Fresnel Integrals S(x) & C(x) • Can be computed from • Or from GH and D are plotted on the fig.13.16 &17 of Balanis. • HPBW is found from fig. 13.15.

  6. Fig 13.17

  7. E-plane horn

  8. Directivity - E-plane horn Fresnel Integrals S(x) & C(x) • Can be computed from • Or from GE from fig. 13.9 and D is plotted on the fig.13.8 of Balanis. • HPBW is found from fig. 13.7.

  9. E plane horn antenna l/aDE 2ye b1 /l

  10. Pyramidal Horn

  11. Optimum pyramidal horn design