- 28th February 2003, 03:14 #1

- Join Date
- Jun 2002
- Posts
- 59
- Helped
- 1 / 1
- Points
- 2,106
- Level
- 10

## Green's function

Hi all:

Do you know whether there is some

softwares or tools can calculate

Green's function, either simbolically

or numerically?

The input should not be limited by

planar structure and symmetric structures.

It is powerful if it can solve general cases.

If there is no such software,

maybe it is a good topic for research.

Regards

Div

- 28th February 2003, 03:14

- 28th February 2003, 12:21 #2
Hello.

As far I know, there is no software like that and I think that almost everybody is using one of this two aproachs

1) Free space Green's function for 3D problems if computing current distributions (eg. MoM)

2) Spectral or spatial Green's functions for boxed/open multilayer structures (2.5D)

Well, you can even use free space Green's functions to analize multilayer structures using Lindell's EIT (only for dyadic fanatics)

Free tools for computing spatial microstrip and slotline Green's functions

"Sommerfeld; A FORTRAN library for computing Sommerfeld integrals", E. Jimenez, F. Cabrera, J.G. Cuevas, IEEE AP Symposium, Baltimore, USA, 1996

The interactive e-book that eirp has pointed out today. Thanks, boss

- 28th February 2003, 12:21

- 5th March 2003, 15:24 #3

- Join Date
- Jan 2003
- Location
- On top of antenna :))
- Posts
- 212
- Helped
- 11 / 11
- Points
- 3,187
- Level
- 13

For planer structure, Green's function for regular shapes are available. You may refer Handbook of Microstrip antennas by

1. Jemes and Hall

or

2. Bahl and Bhartia

or

3. Garg et all

Analytical methods like Multiple Network Model uses these functions.-==-

Hero like you shouldn't cry!

Heroes dont cry!

- 5th March 2003, 15:24

- 5th March 2003, 15:39 #4

- Join Date
- Jun 2002
- Posts
- 59
- Helped
- 1 / 1
- Points
- 2,106
- Level
- 10

## Green's function

Thank g86 for the advice of planer structure.

I guess maybe the general case such as none-planar

and none-symmetric is not very common so that

there is not much effert put into this challenge.

Div

- 29th September 2003, 14:29 #5

- Join Date
- Jul 2002
- Location
- tehran
- Posts
- 81
- Helped
- 4 / 4
- Points
- 2,391
- Level
- 11

## Re: Green's function

Compelaxity of Green function is specified by Boundary condtion. Green function for free space and space with simple boundary in 2D and 3D dimention can be found in the references. for detailed information please see the chap.13 of "Advanced Electeromagnetic" by Balanice

- 5th October 2003, 08:51 #6

- Join Date
- Sep 2003
- Posts
- 91
- Helped
- 1 / 1
- Points
- 1,936
- Level
- 10

## Re: Green's function

good suggestion: "Compelaxity of Green function is specified by Boundary condtion. Green function for free space and space with simple boundary in 2D and 3D dimention can be found in the references."

you may read the famous book written by Prof. Tai C. T. "dydaic green function in EM", and I think It will helpful to you.

- 6th October 2003, 13:05 #7

- Join Date
- Jul 2002
- Location
- tehran
- Posts
- 81
- Helped
- 4 / 4
- Points
- 2,391
- Level
- 11

## Re: Green's function

Tai's book is an advanced book about Green functions. you may find usfule comment about this subject in the simple matemathic books. I send the name of a usfule book in the future

8O

- 11th October 2003, 15:10 #8

- Join Date
- Jul 2002
- Location
- tehran
- Posts
- 81
- Helped
- 4 / 4
- Points
- 2,391
- Level
- 11

## Re: Green's function

Following Book have some good materials about Green's Function

R.Habeman , Elementary Applied Partial Differential Equation

Best wishes