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## Hfss Characteristic Impedance |

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52 Threads found on edaboard.com: **Hfss Characteristic Impedance**

Do you have access to software such as **hfss**? I know in **hfss** in particular, you can place a waveport over your TL and it will solve for the modal **impedance**(s). There are probably several other numerical solvers to achieve the same results.

RF, Microwave, Antennas and Optics :: 02-22-2017 15:26 :: PlanarMetamaterials :: Replies: **1** :: Views: **788**

Which version of CST studio you are using? Use **hfss** for microwave simulation.

RF, Microwave, Antennas and Optics :: 11-15-2016 06:11 :: shb264 :: Replies: **2** :: Views: **864**

Good evening.
I am simulating in **hfss** a short dipole, as well as a small loop antenna. The purpose is calculating the coupling between two short dipoles or two short loops. To match these antennas I use as excitation a lumped port with the same resistance and opposite reactance than the measured Zin, however, when I use this lumped port whith di

RF, Microwave, Antennas and Optics :: 03-11-2016 16:49 :: white4 :: Replies: **7** :: Views: **1568**

Dear all,
as I am having some trouble with my antenna design, I started splitting it up in small problems:
My very first problem is about designing a slot line and determining it's **characteristic** **impedance** Z_0.
My simulation is quite easy:
I have defined a slot line on a low dielectric (epsilon_r=3.5) substrate (h=251?m). The slot line w

Electromagnetic Design and Simulation :: 08-12-2015 15:23 :: Daniel_G :: Replies: **3** :: Views: **1680**

Hi,
I am a newbie to EM simulation / **hfss**.
I used the lumped port (2 port modelling of transmission line ) initially to calculate the S parameters of the transmission line in **hfss**.
Then I realized that I need to use the waveport to find the **characteristic** **impedance**. I made slight modifications in the dimensions of the (...)

Electromagnetic Design and Simulation :: 11-11-2014 22:47 :: whirl7wind77 :: Replies: **1** :: Views: **1704**

i have some knoladge on microwave engineering and in **hfss** and i need to design this coupler to work on 1.67GHz
i know i need this geometry but i'm not so sure how to decide the width and length of each and every element in this coupler
108572

Electromagnetic Design and Simulation :: 08-22-2014 16:45 :: STINGERX :: Replies: **5** :: Views: **1775**

Hi,
Always use wave ports for microstrip line. And the integration line for microstrip line must be in between the substrate with Zpv as the **characteristic** **impedance**.
106841
I hope this is the S-parameter you need, right? If you can send me your e-mail address, I will send you the .**hfss** file.
You say your S21 is

RF, Microwave, Antennas and Optics :: 06-29-2014 20:58 :: cannibol_90 :: Replies: **3** :: Views: **3102**

Hi all,
Based on the generalized S parameters used in **hfss**, is it correct that, when simulating a microstrip line for example:
1) The **characteristic** **impedance** of the line is found by NOT re-normalizing the port and the **characteristic** **impedance** of the line is equal to the wave port (...)

Electromagnetic Design and Simulation :: 10-04-2011 11:06 :: DoYouLinux :: Replies: **2** :: Views: **2648**

According to the transmission line theory, the **characteristic** **impedance** of the device Zo, propagation constant γ only should be related to the materials and the cross-sectional structure theoretically. And **hfss** solve the 2D fields first, then solve 3D fields. For this, I want to ask three questions:
1 Choose ?solve ports only?, (...)

Electromagnetic Design and Simulation :: 04-16-2014 02:09 :: njzyfr :: Replies: **1** :: Views: **1190**

Hi all,
I have been given a task to draw a structure of Coplanar Waveguide with the specification that the center conductor should be of 60microns, the ground planes should be finite and in between two to three times the width of the center Conductor. The substrate could be any silicon or GaAs. I have to adjust the gap width such that in order t

Electromagnetic Design and Simulation :: 08-24-2013 10:50 :: qameralvi :: Replies: **0** :: Views: **948**

Hi all,
Could anyone tell me shall I normalize the waveport **impedance** to 50 Ohm when simulating a waveguide structure in **hfss**? And why? Thanks in advance.

RF, Microwave, Antennas and Optics :: 07-17-2013 07:39 :: shmily0447 :: Replies: **1** :: Views: **918**

Hello!! I wanna know that whether there will be any effect on the results if i change the material from from vacuum to something else in **hfss**?? Also what is the criteria for checking the results when i simulate a magic tee??

Electromagnetic Design and Simulation :: 06-01-2013 18:44 :: Asad.ihsan :: Replies: **1** :: Views: **848**

Dear All
I am sure this thing has been discussed many times and after reading a number of posts with confusing comments i am writing this for our help. Please correct me if i am wrong any where.
Let me first define the port Zo, this variable is related to the **characteristic**s **impedance** of the port or precisely the **characteristic** (...)

Electromagnetic Design and Simulation :: 10-26-2012 11:31 :: mfarhan1 :: Replies: **0** :: Views: **2176**

Hi,
I am very new to **hfss** and not very knowledgeable about Microstrip patch antennas.I want to design a corporate feed microstrip array of 8 elements.I have got the dimensions of the patch but dont know how to find the input **impedance** of each patch and its connecting transmission line's.Also as I am still struggling with the basics,I want to know

Electromagnetic Design and Simulation :: 09-26-2012 03:37 :: Saikatdas1 :: Replies: **1** :: Views: **914**

What's the meaning of the Zo in **hfss**? Is it **characteristic** **impedance**? If so, what is wrong with this **hfss** model? The Zo of the grounded CPWG (Co-Planar Waveguide) is varying a bit obvious with the frequency while the Zo of the microstrip is not. According to the Lincalc tool in ADS, both the **impedance** (...)

Electromagnetic Design and Simulation :: 02-05-2012 13:25 :: saulbit :: Replies: **2** :: Views: **1777**

Dear all,
I've previously started (and closed) a thread in this forum (06-04-11) about the **characteristic** **impedance** calculation of rectangular waveguide in **hfss**.
The conclusion at that time was that the results given by **hfss** were not in accordance with the classical electromagnetic bo

Electromagnetic Design and Simulation :: 11-25-2011 12:48 :: Hash :: Replies: **2** :: Views: **3504**

Hello,
The **characteristic** **impedance** is badly implemented in **hfss** to my opinion: the only way to find the same value of the analytic **characteristic** **impedance** of the TE10 mode is to define an integration line and set the **impedance** calculation to Zpv. Then, you will find the same analytic (...)

Electromagnetic Design and Simulation :: 11-25-2011 09:43 :: Hash :: Replies: **3** :: Views: **1568**

I am asking for help.
I have made a vivaldi antenna simulation in **hfss** v12.0.1
But I have troubles with waveport, and because of this very bad VSWR, S11, real and im **impedance** parameters...
How should I change my waveport to get normal parameters?
____________________________________________________________
Model of my Vivaldi anten

Electromagnetic Design and Simulation :: 12-01-2010 16:31 :: LarionUA :: Replies: **5** :: Views: **2146**

Hello,
I am implementing Power divider using stripline. I have used lambda/4 = 75mm (1GHz) & air as a dielctric material. My question is that suppose i want to implement 57ohm line so to find out width ill first terminate it at 57ohm then see the reflected **impedance** if both are same then it is 57ohm **characteristic** line. Now if i terminate this l

Electromagnetic Design and Simulation :: 04-14-2011 11:46 :: chetan.zele :: Replies: **0** :: Views: **1654**

Dear all,
I'm puzzled by the result given by **hfss** (v12 or v13) in a simple rectangular waveguide case.
When modelling a rectangular waveguide which cross-section dimensions are 72mm x 34 mm (WR284) and let say a 200mm length, at 3GHz, **hfss** solution data Z0 are :
- using Zpi (default) integration line : Z0=304.7 Ohm
- using Zpv integration

Electromagnetic Design and Simulation :: 03-25-2011 15:22 :: Hash :: Replies: **1** :: Views: **8229**

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