[SI-LIST] Re: 50 Ohm vs 75 ohm

Originally, impedance that electric power transmission (Power transfer) special 
quality of electromagnetic waves energy is the finest about 33ohm, 

and impedance that distortion of signal wave is the smallest about 75ohm. 

So, the intergrade is about 49ohm, Use 50 ohm for convenience of calculation



------- Original Message -------
Sender : jen guest<silist408@xxxxxxxxxxx> 
Date   : 2005-08-30 11:23
Title  : [SI-LIST] 50 Ohm vs 75 ohm

Hello SI expert,

I am looking for a paper or an explanation of what the differences between 
50Ohm and 75OHM transmission line. Why must be 50Ohm impedance matching 
instead 75ohm?

Please help.

Greatly thanks in advance,

JEN

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