inset feed width in microstrip patch antenna

[sonu.su08]

plz can some one tell me how to calculate the "width of the inset feed in microstrip patch antenna" having dilectric constant 4.36 ,height of substrate is 1.5mm and frequency is 2.4835ghz...tell me the formula for this

 

[rameshrai]

you can use the ADS linecalc tool for this

 

[subasree09]

Try this one.. L=lamda/4, W=lamda/squareroot of (epsilon r)