a parabolic dish antenna has a conical beam 2° wide, the directivity of the antenna is approximately
a) 20 dB b) 30 dB c) 40 dB d)50dB
i've read from some net files that directivity =(41253)/(BW theta χ BW phi) but even how does it shall it be in dBs ?
if i'm not right what is the right formula?
a) 20 dB b) 30 dB c) 40 dB d)50dB
i've read from some net files that directivity =(41253)/(BW theta χ BW phi) but even how does it shall it be in dBs ?
if i'm not right what is the right formula?
Attachments
-
602.8 KB Views: 153
-
145.3 KB Views: 92