Hi Jian,
Shunt inductance that I am using is designed using a normal microstrip line of width w and length l with a via connection from the top metallic strip to the ground plane at one of the ends of the microstrip line. If the designed structure is small in order to avoid higher order modes, what should be the length of the extension line to be considered? Is it five times the dimension of the design or any arbitrary length can be considered?
With Regards,
MM_DEVILS.