9 Sep
2006
9 Sep
'06
9:04 p.m.
Clarification, or more fuel to the fire... For a *fixed overall physical size (aperture)*, antenna gain is proportional to f^2 Pathloss is proportional to 1/f^2 So then the total link budget actually *increases* with increasing frequency (f^2*f^2/f^2=f^2), since you have an antenna at both ends, subject to the assumption stated initially. There are several 2nd-order terms to consider overall, such as decreasing transmitter power as frequency increases, thermal/galactic noise variations with freq, etc., but *for a given size* higher is better.