FreeLists / si-list / [SI-LIST] Question on EMI radiated power

[Doug Brooks <doug@xxxxxxxxxx>]

SI Gurus

I'd like to try something on you. Consider a circuit that radiates 
some EMI (not necessarily a lot.)

Point #1.  Presumably, there is energy radiated in the EMI that is 
lost to the circuit. It might be very small, but still non-zero.

Point #2.  In an antenna, energy that is radiated from the antenna 
can be represented by the Radiation Resistance (RR) of the antenna. 
That is, the energy radiated is equivalent to the energy dissipated 
in the equivalent RR.

Therefore......  Can we assume that in a circuit that radiates EMI 
there is an equivalent loss of energy in the circuit? And further can 
we assume, at least conceptually, that we could define something 
"like" an RR for a circuit to represent that loss to EMI?

Doug Brooks

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