[SI-LIST] Re: Even mode, common mode, and mode conversion

  • From: "Muranyi, Arpad" <arpad.muranyi@xxxxxxxxx>
  • To: "'si-list@xxxxxxxxxxxxx'" <si-list@xxxxxxxxxxxxx>
  • Date: Mon, 25 Feb 2002 22:52:40 -0800

To all,

Sainath addressed his question to me, but I am going on vacation
and don't have the time to answer it.  Could someone please 
give him a good explanation to his questions?  Thanks,

Arpad
=================================================================

-----Original Message-----
From: sainath@xxxxxxxxxxxxx [mailto:sainath@xxxxxxxxxxxxx]
Sent: Monday, February 25, 2002 11:18 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Even mode, common mode, and mode conversion



Arpad,

This two T-lines vs one T-line mode distinction is confusing to me.
What makes the two T-lines support even or odd kind of modes? and the one
T-line support the TEM kind of modes?
Is it not possible to have TEM kind of mode propagation in a two T-line
system?
How would you define a MODE when it is meant even or odd mode ? and when it
is meant TEM mode?

Thanks,
Sainath

----- Original Message -----
From: "Muranyi, Arpad" <arpad.muranyi@xxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Monday, February 25, 2002 10:26 AM
Subject: [SI-LIST] Re: Even mode, common mode, and mode conversion


>
> What may be confusing to some is that the word "mode" is used
> in different ways in different contexts, both involving
> transmission lines.
>
> So far most responses mentioned the even or odd mode, where
> the signals of ***two*** T-lines go either in the same or the
> opposite direction.
>
> The other usage of this word involves only one T-line (or
> wave guide or optical fiber) and describes how the electro
> magnetic waves propagate inside that line, one of the most
> familiar mode being the TEM (Transverse Electro Magnetic)
> mode.  Don't confuse the two meanings of the word MODE!
>
> Arpad Muranyi
> Intel Corporation
> =================================================================
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