I need to design sequential rotation feed network for patch antenna array . how can i find the width of the particular impedance to match final 50 ohm impedance.
You need a quarter wave long section of the geometric mean of 50 ohms and the impedance your patch would like. A microstrip calculator such as provided by Rogers will tell you how wide it is. There will also be a slight length correction to take account of the capacitance of the strep in width.
Thanks for the response Malcolm White . can you provide any further information regarding sequential feed network, like where can i find standard info about it.