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# Finite Integration

22 Threads found on edaboard.com: Finite Integration

## Tunning an RC Integrator

The series resistance of the switch in principle will change the integrator into a PI characteristic (proportional part Rswitch/Rin) - however, for a "good" resistor ratio (small) the influence on the time constant of the integration process should be negligible. Don`t forget that also the finite and frequency-dependent opamp`s open loop gain distu

## create dipole source by discrete port

Ideal point source (J&M) is challenging in FDTD, its actually a singularity point, at which the signal magnitude is infinity, however, the integration over such delta function is a finite value. This is very very challenge for differential based solvers. Especially for its near fields, its error is going to be large.

## Need urgent help regarding Finite element method

hi every one I am trying calculate stiffness matrix for 2D fem and using quadrilateral element(2 elements). but i am facing problem with the integration. it is giving me warnings with out calculating stiffness matrix. the warning is Warning: Cannot attach the property of being close to the limit point to limit variable. please help me

## reflectarray simulation using CST MWS

CST MWS is not suitable for large structure. It is based on finite integration Technique and uses volume discretization. I think, you should use ADS Momentum of FEKO Software. They are based on the Moment Method. Also, if you are familiar with Ansoft HFSS, so you can use Floque boundary condition to overcome this probl

## How does CST Microwave Studio work?

The "original" solver in CST Microwave Studio is based on finite integration Technique. Computational electromagnetics - Wikipedia, the free encyclopedia

## Finite Element Time Domain

Firstly hello to everyone. I am a EE Masters student. I have really found this forum very useful in lines of expanding ones knowledge and I appreciate each and everyone who are behind this wonderful forum. Now getting back to my question Can I know where can I get the basics of finite Element Method Time Domain techniques. Also can anybody gi

## Parseval theorem - integration in (-a, a)

Hi nirmal323, In the case that one function has finite support (-a, a), then the integation in (-∞, ∞) reduces to integrate in (-a, a). But if the function has finite support in one domain, it doesn't have finite support in the other, so you should integrate in (-∞, ∞) in the other domain in order that Parseval's (...)

Hi, As far as I can remember any function that has "finite" number of discontinuties is integrable. The idea behind integration is to compute the area swept under the function now suppose that the required function has discontinuties at say n points in the range of integration then we can patch these points up as their contribution to (...)

## The different between transient/frequency solver in CST ?

MWS is particularly using the FIT method (finite integration Technique), the brother of the FDTD method. Those two techniques are similar but not identical.

## CST based on FDTD equations or ??

FIT is same as FDTD in cartesian coortinates. Its interesting as FIT finite integration technique FDTD finite Difference time domain Please upload some tutorial if u have one

## CST based on FDTD equations or ??

The simulation engine of CST is based on finite integration Technique (FIT), not FDTD. However, FIT used for time-domain simulation has some similarities to FDTD.

## What is FIT (Finite Integration Technic)?

Dear all What is FIT (finite integration Technic) and it's differanc with FDTD method? Thanks

## Finite integration method

I need information about the finite integration method, basics and methodology. If someone can help me it will be great. If someone has information about moment method it can be useful too. thanks

## Integrate cos(sin(x))

I highly doubt that there is a finite expression of that integral. It can be expressed by a series if certain integration limits are applied.

## what is the story behind the limit

Do you mean the "limit" in calculus? If so, then the whole modern mathematics is based on it, the differentiation, integration, ... All will collapse if there were no "limit". You only got arithmatics or finite math.

## Looking for source for Finite Integration Technique

Hi Habib83, maybe this FDTD report/code may be of help to you. You may have to adapt FDTD equations to FIT. If you are asking if anyone has simulated UWB antenna by FIT method, CST Microwave studio uses this method and many people has used to to simulate UWB antennas. Cheers, Element7k

## Looking for references on FIT method

See this post by eirp. Cheers, Element7k hi, i'm looking for some references about "finite integration technique (FIT)". who one can help me? regards.

## Can someone forward me how CST MWS works please?

CST is based on finite integration Technique. This method is similar to finite Difference Time Domain Method; the main difference is that FIT solve maxwall equation in time domain in integral form while FDTD in differencial form. To understand the CST program you can serch for some paper on FDTD method (it is very popular) midnite

## The main solver method behind MWS

You can take a look at these old posts : The main solver method behind MWS is finite integration Technique (FIT)... mog.

## Finite Integration Technique (FIT)

i'm new to FIT. could anyone suggest me the most practical reference for dummy like me? books, lecture notes, article or whatever..

## How to define ports for CPW in HFSS?

i've done a finite ground CPW and i drew the integration line on one port from the ground to the center line on one side, and one the second port i drew the integration line from the other ground to the center line. I verified the results i got with an ADS result and it matched pretty good. you can always try veryfying with ADS if you have (...)

## technique method of cst mws

This issue was discussed in some other topics. A few points: It is called finite integration Technique (or Method) was invented in 1977 by Thomas Weiland and it can be considered like a generalization of FDTD invented by Yee in 1966. Yee discretizes the differential form of Maxwell?s curl equations while FIT discretizes the integral form (Farad