FreeLists / si-list / [SI-LIST] Re: problems with simulation of loop antenna far field using Wire-MOM

["Jian-X. Zheng" <jian@xxxxxxxxxx>]

Hi, Kundanchand:

I saw your message in the Electroda discussion forum. I would like to give
some comments on it. If the loop antenna is very small compared to
wavelength, you shoulid not get E(theta) because the E-theta field is
cancelled by current flowing in opposite directions. However, when it is no
longer small compared to wavelength, the current flowing on the loop may not
be uniform. Then, you will get E-theta when the current flowing in opposite
directions can not cancel each other for the E-theta field. Such a situation
may happen only when the electrical dimension of the loop is big. You may
consider using surface meshing based MOM simulator for it for better
accuracy.

Best regards,

----------------------------------------------------------------------------
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Jian-X. Zheng, Ph.D., Zeland Software, Inc., 48834 Kato Road, 103A, Fremont,
CA 94538
Tel: 510-623-7162, Fax: 510-623-7135, E-mail: jian@xxxxxxxxxx, Web:
www.zeland.com
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> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of kundanchand chand
> Sent: Monday, July 04, 2005 6:54 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] problems with simulation of loop antenna far field
> using Wire-MOM
>
>
> Hi everyone
> i am new to this group. I have been trying to simulate the
> electric field(E(phi)) for an infinitesimal loop antenna in the
> far field. The software used is Wire-MOM. But the simulations
> show a considerable value for E(theta) component. As per my
> knowledge, the theta component of electric field is zero for a
> loop antenna(in the far field). Can anyone explain this please?
> Thanks
>
>
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