Jun 11, 2015 #1 K kato Junior Member level 3 Joined Jun 25, 2007 Messages 26 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 1,487 Hello, I have a coaxial line of length L. run it at frequency f. No dielectric just one PEC cylinder in a vacuum cylinder. Defined waveguide ports. since this is a TEM mode, I would expect the s21 phase to be 2*pi*L/wl. It's not! What am I missing? Thanks
Hello, I have a coaxial line of length L. run it at frequency f. No dielectric just one PEC cylinder in a vacuum cylinder. Defined waveguide ports. since this is a TEM mode, I would expect the s21 phase to be 2*pi*L/wl. It's not! What am I missing? Thanks
Jun 12, 2015 #2 P PlanarMetamaterials Advanced Member level 4 Joined Jun 13, 2012 Messages 1,476 Helped 407 Reputation 818 Reaction score 385 Trophy points 1,363 Location Edmonton, Canada Activity points 9,960 kato said: No dielectric just one PEC cylinder in a vacuum cylinder. Click to expand... How is this a coaxial line? Have you confirmed the excited mode is correct?
kato said: No dielectric just one PEC cylinder in a vacuum cylinder. Click to expand... How is this a coaxial line? Have you confirmed the excited mode is correct?