Is possible to get very narrow beamwidth antenna


Is possible to make 60 dBi sector or patch antenna by make its beam width 0.17°/0.17° only ?

how to calculate ideal dimensions against frequency at this range of beam width ?

Best Answer

The practical answer is that a \$60\$ dBi gain antenna is very large both physically and electrically. I would not expect that one could build one using reasonable technology.

Gain can be estimated based on the effective aperture surface area.

$$\text{gain (in dBi)} = 10 \log \left( 4 \pi \times \frac{\text{area}}{\text{wavelength}^2} \right)$$