hi,
i want to design an expeonential tapered microstrip line for impedance transformation from 50 to 100 ohms.now i caluclate w(width of M/S) using tline calcuator and w2=5w.now for exponent factor of m/s line i used a=1/L* ln(z0/ZL) but i dont know how to find exponent factor for ground???that is also tapered in such a way that its widt and M/S line width match at end??if anyone knows it please guide me i am stucked because of this. thanks