1. INEL 6069 Dr. Sandra Cruz-Pol ECE, UPRM CAPT 13
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/b DH
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 &17 of Balanis.
HPBW is found from fig

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 and D is plotted on the fig.13.8 of Balanis.
HPBW is found from fig

9. E plane horn antenna
l/a DE
2ye
b1 /l

10. Pyramidal Horn

11. Optimum pyramidal horn design