alice12
Newbie level 4
Hello
I am trying to find the best dimensions for a CPW line by momentum simulations in the frequency bandwidth [1,400] MHz.
I did some simulations, I found a |S11| around -50dB for these dimensions:
- W=3 mm, G=0.5 mm and ground plane 6 mm.
But this is the case of a 10cm line.
When I increase the length to 40cm, a peak appears at 250 MHz and it reaches -10dB.
I don't know if this is normal ! Or a simulation error that I did.
Can you help me?
Otherwise, please, have somebody an idea for the best dimensions to choose (for a finite ground planes CPW) to get a perfect 50Ohm line in my bandwidth ?
Thank you a lot !!
Alice.
I am trying to find the best dimensions for a CPW line by momentum simulations in the frequency bandwidth [1,400] MHz.
I did some simulations, I found a |S11| around -50dB for these dimensions:
- W=3 mm, G=0.5 mm and ground plane 6 mm.
But this is the case of a 10cm line.
When I increase the length to 40cm, a peak appears at 250 MHz and it reaches -10dB.
I don't know if this is normal ! Or a simulation error that I did.
Can you help me?
Otherwise, please, have somebody an idea for the best dimensions to choose (for a finite ground planes CPW) to get a perfect 50Ohm line in my bandwidth ?
Thank you a lot !!
Alice.