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It seems that I have find a way improve my model and I am now working on it. I will inform you of any possible improvements as soon as possible. Thank you for your attention.

Hello I am trying to model a microwave transistor using Agilent ADS built-in models. The model name I have chosen is EE_HEMT model from the GaAs library. I studied the model details from the help files provided by the Agilent and after separation of the parameters into DC and ac ones, I tried...
3. Fields for PhD in RF and Microwaves

Re: phd suggestion Dear friend, As one of the guys said, your subject of research in PhD program depends to a great extent to your own interests and pre-research during your MSc period. But just as a suggestion, I can say the sunbect of ultra high frequency circuits and also RF MEMS are two of...
4. Double integral in MATLAB

double integral matlab Hi everybody Do you know how to calculate a double integral in MATLAB when the inner integral limits are themselves functions of the outer variable? Considering that I don't want to change the variables.
5. How to caculate imaginary matrix in Matlab?

Hi Be careful yorande.If you use the '*' sign between i and other variables,it will consider it as a variable if you have asigned it some value before. So check whther you have not defined it as a variable before and also use it as echo14 has showed.I hope your problem cab be solved.
6. "sup" in functional analysis

Hi I have encountered an abbreviation "sup" in an article just as below: d(x,y)=sup|x(t)-y(t)| What does "sup" stands for in functional analysis? I am a beginner in this issue.Please explane it a little. Thank you so much.
7. What are "Toeplitz" and "Hurwitz" matrices?

Hi What are "Toeplitz" and "Hurwitz" matrices? What properties do they have? Regards
8. inverse fourier transform help

Hi steve10 u(t) is the unit step function which has the value 1 for t>0 and zero for t<0. I will send its derivation in complex ky plane for you. I am sorry for my delay.
9. What is wavelet transformation?

what is wave-let? Hi If your field of interest is electromagnetics,this is a nice reference below.But Wavelets are used in Digital Signal Processing much more and there are a lot of books about it in Signal Processing. h**p://www.amazon.com/exec/obidos/tg/detail/-/047141901X
10. Looking for Stephen Hawkins books

How can I find Stephen Hawking books entitled as below: 1)"A Brief History of Time" 2)"The Edge of Space time" Regards
11. inverse fourier transform help

Thank you steve10.First I should correct an error in the doc file I have attached. In definition of variable there is a 2 in the power.So we do have branch points. Another point is that how can you be so sure that this integral diverges? For instance inverse fourier transform of 1/ky^4 is (y^3...
12. variable assignment in MATLAB

Thank you both for your useful comments. The answer of "irfan1" is definitely what I wanted and I learned something else from the answer "steve10". But as I found out we should use ' ' instead of " " in defining the string m.(to irfan)
13. The folding technique and pole extraction method for sommerfeld integral

As I studied in IEEE papers,there are three main techniques in treating singularities that arises in sommerfeld integrals in full wave analysis: contour-deformation approach,the folding technique and pole extraction method. I could not find any discription about two latter ones. Can anybody...
14. inverse fourier transform help

Thank you After some large amount of manipulation, I could split my integrand into small inseparable parts which looks more like each other.I show one of these parts in the file that I have sent below. Do you know how can I choose the path of integration in complex ky plane. notice that there...
15. variable assignment in MATLAB

Hi I have a problem in assigning a large number of variables with increasing indices. Here is a simple example which shows exactley what I want: var1=a; % a,b,... are are numbers or outputs of some functions var2=b; var3=c; . . . var100=z; How can I...
16. Pointers in MATLAB programming

Hi everybody Is there something like "pointers" in MATLAB programming language? I want to deal with many variables in several m.files and refer to them from another m.files.and it is best done by pointers. best regards
17. How to express charge density in MoM method?

Re: MoM method Hi Here are the papers.
18. what are sommerfeld integrals?

Hi What are the sommerfeld Integrals that appear in full wave analysis? regards
19. What are the Sommerfeld integrals that appear in full wave analysis?

Hi What are the sommerfeld Integrals that appear in full wave analysis? regards
20. What is Mixed Signal Integrated Circuit?

Hi everybody Please explain about Mixed Signal Integrated Circuits. What does "mixed" mean ? regards