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# Field Current Density

19 Threads found on edaboard.com: Field Current Density

## Correlation of Magnetic Field data with surface current density in CST MWS help pleas

Is there an easy way to correlate surface current density data with corresponding magnetic field data in 3D... I can easily get access to both but there is no correlation of indexes... I understand that H is used to calculate the surface current on PEC bounders but to get the H for the given current one (...)

## Surface Current in CST

I had one Question regarding the scale values of surface currents in CST. Why is it showing it in terms of Ampere / meter ?Ampere/ meter in reality represents H field. I know H field and current are related through Ampere circuital law but still the unit for surface current should be in Ampere? Why is CST (...)

## How to extract results from.the graph obtained from sonnet

Sonnet gives Far field parameters only, not gain. If you know s-parameters, it means that you know the impedance,vswr etc.. what is the problem..??

## 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 field Calculator. However, I've read (...)

## How to simulate a quantum well in TCAD

Hi, can anyone tell me how to simulate a quantum well in TCAD and to see the current density while applying electric field to it?

## current distribution in hfss of this type with arrows

Hi, To get the surface current density field: 1) Select all the components of your design in the project manager. 2) Right click and then click on 'Plot fields' 3) Then select 'J' 4) You can then select Mag_JSurf, ComplexMag_JSurf or Vector_JSurf as per your requirement. Regards Twisha

## volume charge density of conductor

hi i don't think charge carrier density is zero ! either it connected or not to a battery.of course in "conductor". it can increase when the conductor connected to a battery with ionized electron and left valance band to conductive band. in conductor there are a lot of charge carrier in conductive band so when it connect to a battery it cues to g

## Saturation current in a MOSFET

The current is flowed because of high electric density field at the channel because of high electric field,the current flows. In saturation,the current always flows but current of fixed magnitude.

## transformer losses by maxwell

Hi, everyone, I am using Maxwell 2D&3D from Ansoft to do transformer design. I can use it to plot different figures, such as energy distribution, H field, current density and so on, but I don't know how to calculate loss (copper loss and core loss). Do you know how to do this? Thank you very much

## DC generator Design question

What will happen if, In a DC generator,the resistance of the field winding is increased?? will it increase the output voltage or will not affect it at all ?? :?:

## exporting hfss to matlab

can anyone help me exporting field data from hfss i know there are several threads similar but here i have a different problem i need to export field data (actually current density) to matlab but i need to work with variables im making optimization for an antenna structure and the optimization in made in matlab (...)

## What is dyadic Green tensor?

Electric Magnetic fields are 3-dimensional vectors. For example, current density vector is J=(Jx, Jy, Jz). Electric field vector generated from this J is expressed as E=(Ex, Ey, Ez)=*J This matrix form green fuction, is called as tensor green fuction

## Far field source in CST...

Hello everybody, I am trying to make a far-field source in CST MWS, with the incident E field as follows: E_inc= {Sin(phi_i) , - Cos(phi_i)} exp Then calculate the absolute current density on a patch antenna surface. How can I input such an incident in CST MWS or even HFSS? Thanks in advance!

## Selecting mesh size in CST Microwave Studio

you may start with 1/10 rule (10 cells per wavelength of maximum frequency) but which may not converge to correct result. After initial simulation see what is happening at that minimum dimensional part. if you see major variation of field current near the minimum dimensional part then you may need to increase the mesh density. If total mesh (...)

## why a loops of wires used in the motor instead of straight

To generate more magnetic fields with same current. -- Amr Ali

## Calculate loss in Maxwell 2D or 3D (Ansoft)

Hi, everyone, I am using Maxwell 2D&3D from Ansoft to do transformer design. I can use it to plot different figures, such as energy distribution, H field, current density and so on, but I don't know how to calculate loss (copper loss and core loss). Do you know how to do this? Thank you very much! Michaelis

## near field analysis in CST

Hi Ravi, You can use field monitor for measuring H field . Near field is mainly due to magnetic coupling. H field will give you a measure of near field distribution. I guess you will be using some kind of Loop antenna, you can measure the surface current and magnetic energy (...)

## How to export surface current density with field calculator

I use HFSS field Calculator to export surface current density on a patch. When I click the Export button, always an error occurs. And if I click the Write button, a ?*.reg? file can be get, but the coordinates of the current data are not shown, is there anyone can help me?

## how to improve cavity filter 's power capability

The way is reduce the current density where it's higher and reduce electric field where it's higher. Usually the connection between coax connector and cavity is a zone with high current density, use very thick wire. The zones at High Zo are also interested to High |E| field. A thin sheet (...)