What is the role of dielectric permitivity in antenna design. FOr example what is different between when epslon is 2.3 , 2.3 and 2.5 . WHy we choose 2.2 instead of 2.5.
In which case we will think of changing the permitivity of substrate when the design of antenna is fail ( not as expected ) -by your experience
Increase the dieclectric constant, decrease the size.
But it is not the main factor to decide which dielectric constant is choosen, If you design antenna in 5.8 Ghz, which dielectric you will chosse, 2.2 or 2.5 ??? What is different between them