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Thanks for your apply. I tried to use group delay results to calculate GVD in HFSS.
The group delay dispersion (also sometimes called second-order dispersion) of an optical element is a quantitative measure for chromatic dispersion. It is defined as the derivative of the group delay, or the...
What are the parameters that characterize the presence of dominant mode and higher order mode components in a transmission line？How to identify the proportions~
group delay？ or other parameters？
Hello Azulykit,
Thanks for your reply. It's my pleasure to communicate with you.
I think the transmission line should have low loss, broadband performance. And this is also my PhD thesis, though I think it is hard for me to deaign a new low loss, broadband TL. I am trying to design a new TL...
Thanks！ I agree with you. The impedance calculator is not include the vias metal wall.
1641976523
Thanks for your reply. It's my pleasure to communicate with you.
Yes, I am trying to design broadband transmission line (Frequency: DC- 110GHz). If the TL has the advantages of broadband, low...
The width of the center conductor is 0.4mm. I tried a smaller size (0.25mm), and it still observe resonances at high frequencies, the transmission loss is bad.
Thanks for your replay. The total width is 8mm. And I changed the total width(5mm/3mm) to see the simulation results.
1641289621
Thanks for your replay. "The vias can be placed 1/8 .. 1/16 Lambda pitch space." Is the wavelength corresponding to the central frequency(corresponding to...
I simulated GCPW, the working frequency band is 1-110GHz, the length is 20mm, and the GCPW loss S21 is very poor; may I make a mistake in my simulation.
Does GCPW have vias? Should the ground on both sides of the upper center conductor be connected to the ground on the lower GND? In the paper...
Thank you.
When a novel transmission line is proposed, the article analyzes the attenuation constant first, or the attenuation constant and S21 are analyzed at the same time in some papers.
S21 (insertion loss) does not correspond to attenuation constant, as shown in the figure, it maybe...
In HFSS, the attenuation constant is solved: by the equation re(Gamma)/1000*8.686 (dB/mm);
Does the attenuation include radiation losses?
The S21 is bad, however the total attenuation have good profermance. I dont know the reason, who can help me?
What is the difference between attenuation and...
What is the meaning of S(1:3;2:1)?
Reference Linkbase:
（1）http://blog.csdn.net/weixin_44323997/article/details/118786941
（2）http://www.edatop.com/hfss/1207.html
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