how to calculate antenna gain
Hi,
I have a doubt.
Pr=power received from the patch antenna
Pt=power transmitted from the patch antenna
R=distance
lambda=wave length
Gt=gain of transmitting antenna (the patch antenna)
Gr=gain of receiving antenna (the term include the losses of the receiving system)
Pgr=3.14
So,
Gt= (4PgrR/lambda)2 Pr/(Pt*Gr)
Gt (dBi)= 10 log Gt
I have the values:
Pr= -5dBm
Pt=20dBm
Gr=? ( don't know)
R=distance which is 1.8meter
What I will get in Gt? What is actually Gr? I know it stands for gain of receiver but don't know how to figure the value. Can anyone tell me?
Can anyone help me to calculate the gain in dBi which is Gt.
Waiting for your reply.
thank you.
Regards,
Saran