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29 Threads found on edaboard.com: Hfss Current Line

cst studio suite microwave studio

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

[HFSS] How to calculate power dissipation in SMD resistor

How to calculate power dissipation in SMD resistor, which is part of the radiating structure, i.e., connected in series with a single-sided PCB (printed circuit board) line. It is clear that P=I2*R, where R is the resistance of the resistor and I is the current through it. But the question is, how using Field Overlays to correctly identi

HFSS: how to integrate surface current density over a line HELP!!!!!

Hi! The model used in my hfss simulation is stripline, and I'd like to integrate the surface current density (Jsurf) over a line which is defined as the contour path around the conductor. However, I don't know how to make it. I've supposed 2 possible solutions. 1) integrate directly in hfss with (...)

Resistor in HFSS for a Wilkinson power divider

I'm not sure exactly what you're doing, but I can explain how to use a lumped RLC boundary in hfss and set its resistance to 100Ω. Regarding the current line (for a lumped RLC boundary), you just set the starting point at one end of the resistor and the end point at the other end (touching the edge of the surface on which you're (...)

Metallic Spherical Resonator Coupling Between Microstrip Lines - HFSS Simulation

Hi eraste, Thanks for your reply, this maybe a silly question but how would i go about finding those modes? I already tried to solve my sphere in hfss eigenmode however the simulation never solved since it ran for over 24 hours. Thanks again.

lumped RLC model in hfss

for example if you have two lines, with a gap between, on a substrat (the substrat and the lines are create by 'Draw->Box', for details see help in hfss). then you make 'Draw->rectangular', which creates a 2D sheet. The sheet has to fill the gap between the lines. After that you can click on the sheet and select (...)

finding the voltage difference between 2 points using Ansoft.

when an electromagnetic wave propagates through a dielectric substrate does it generate a voltage difference or a current flow (even minute values)? If so, how do you measure the current and/or voltage using ansoft hfss??? Instantaneous values or vectors will do...thanks in anticipation :)

Questions for HFSS Data Export or use Field Caculator to do line integral

To whom it may concern I design a microloop as my antenna. The diameter of this loop is 20 um. This antenna can generate an AC magnetic field under 1 GHz microwave excitation. From the figure (as attached), you can see the induce surface current on my sample is like a dipolar radiation pattern. I want to use this dipole radiation pattern to do

Magnetic Bias only be assigned to Ferrite 3D objects

Hello everyone, I've tried to simulate the effect of current running through an copper strip in hfss to investigate the gradient effect on a surrounding static magnetic field. The problem at hand is to create this magnetic field. So what I've tried so far is the draw a cylinder (3D) made of ferrite and excite this with a magnetic bias as if a pe

How to feed the dipole antenna using microstrip line in HFSS?

Hi, everyone. I have already made a phase shift, which is implemented by a microstrip line. I want to apply this phase shift to changing the current feeding to the dipole antenna. However, as I am using the hfss to simulate this, I have no idea on how to connect the phase shift to the dipole. The phase shift I made is to change the phase of (...)

Lumpport in HFSS...the excitation is applied at a point?

Hi! "With lump port=> the excitation is applied at a point/cell, as a voltage or current. With wave-port=> the excitation is so-called eigen-wave, such as the quasi-tem wave supported by a microstrip line. It applies over a cross-sectional area. voltage is scalar, wave is vector by nature, hence there are substantial difference between the two

The Width of the lumpport in HFSS

I would recommend you use the pin width. That way your model will contain the correct current profile as it approaches the device pin. Otherwise, you will lose the proper modeling of the extra inductance as the current flows from the edges of the microstrip, around the facing edges of the microstrip line (at the substrate gap) and mates (...)

Impedance calculation with voltage source for excitation

I have been trying to calculate the impedance of a dipole pole antenna that is excited by a voltage source in hfss v9.2.1. I can use the fields calculator to calculate the current at the center of the voltage source line. I should then be able to get the impedance by dividing the voltage by the current. I have designed the (...)

possible error at the cookbook of hfss

In the "Calculating the current along a Wire or Trace" section of cookbook if I understood correctly the H field has been dot producted with the closed line, which had been defined previously, and then the line integral is taken. And there it says that the result of this integral is equal to the current which that closed (...)

How to plot seveal S11 traces together in HFSS version 10?

I carry out a parametic study. I need to compare the results in different simulations. How to plot together in hfss instead of using MATLAB. Thank you

Problem with extrapolating DC solution in HFSS

Hi everyone, I am new in hfss and I have a question regarding the DC solution in hfss. I designed a coupled-line transformer, solved between 100MHz and 10GHz, and simulated it in hfss. I then generated the s-parameters file of the structure. The S11 and S12 plots are close to my hand calculations. Since I want to (...)

how to correctly simulate a microstrip line in hfss

espercially coupled lines? wave port or lumped port?

Modelling a structure excited by line source in HFSS 9.2

I have a structure which is excited by a line current source parallel to z axis. The current varies along the line in the form of exp(-j.beta.z), where "beta" is a constant number. Now my quation is that how I can model this kind of current in hfss9.2.

How to see the plot of current distribution on strip in HFSS

Perhaps you can only observe the EM field,not the current in hfss.

HFSS lumped resistors

Yes, that sounds right. The current line should snap to the center of the square edges that you are defining as the RLC boundry. It works just line defining a lumped port. One thing I watch out for in hfss is the meshing. Look at the current densities on your conductors. It should be high at the edges (...)