simulating a quarter wavelength transmission line with spectre
时间：04-06
整理：3721RD
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hi guys,
i'm trying to run a seemingly simple simulation of finding the width and physical length of a transmission line using spectre for a quarter wavelength transmission line.
1) the simple circuit
2) checking the phase of S21 @ 60GHz to find the required physical length of a 0.25 lambda using physical length = |phase of S21| * lambda / 360 degrees
it's about -19 degree so the physical length is calculated to be about 471um (which i think it's ridiculously long?)
3) as for the characteristic impedance, i need a 50 ohm transmission line of course because both ports are 50 ohm (i've set them to default). so I'm going to do a sweep and check the ZM1 to make sure i have 50 for real and 0 for imaginary?
I would like to know whether are my steps right and if not, how can i improve it or there's an alternate way to do it IN CADENCE SPECTRE. Thanks a bunch!
natnoraa
i'm trying to run a seemingly simple simulation of finding the width and physical length of a transmission line using spectre for a quarter wavelength transmission line.
1) the simple circuit
2) checking the phase of S21 @ 60GHz to find the required physical length of a 0.25 lambda using physical length = |phase of S21| * lambda / 360 degrees
it's about -19 degree so the physical length is calculated to be about 471um (which i think it's ridiculously long?)
3) as for the characteristic impedance, i need a 50 ohm transmission line of course because both ports are 50 ohm (i've set them to default). so I'm going to do a sweep and check the ZM1 to make sure i have 50 for real and 0 for imaginary?
I would like to know whether are my steps right and if not, how can i improve it or there's an alternate way to do it IN CADENCE SPECTRE. Thanks a bunch!
natnoraa