Regarding Antenna's efficiency plot v/s frequency

Respected all,

Help me figure out what should be the correct representation of Antenna's efficiency. As per the parameters available in HFSS, one can plot the ratio of Radiated power to Accepted Power and another ratio of Radiated power to Incident Power.
So, anyone please help me what is and should be the correct representation of Antenna efficiency. What is that is not included in antenna's accepted power than the incident one is Mismatch loss? Am i correct?

So, i was going through one post stating

Total radiation efficiency = (antenna efficiency) x (mismatch loss)

Which means that:

antenna efficiency= Radiated power / Accepted Power

and

Total radiation efficiency= Radiated power / Incident Power

Are these notions correct?

Please Help asap. As i am required to record these two results in my project work due for submission soon.

Regards and Thanks in advance.

Efficiency is RadiatedRower / AceptedPower

i.e. it has nothing to do with mis-match loss.

Gain = efficiency * directivity.

An efficiency of less than 100% results due to losses in the dielectrics (if present) and conductors.

For a definative reference, I suggest the IEEE standard which deals with antenna terms.

Deborah

Thanks for your reply,

Yes, I am known to this definition that "gain does not include losses arising from impedance mismatches (reflection losses) and polarization mismatches (losses).”
But please note that my query is regarding Efficiency. I found out frequently the following:

In general, the overall efficiency can be written
e0 = er x ec x ed
where
e0 = total efficiency (dimensionless)
er = reflection (mismatch) efficiency (dimensionless)
ec = conduction efficiency (dimensionless)
ed = dielectric efficiency (dimensionless)

where
ecd =ec x ed =antenna radiation efficiency, which is used to relate the gain and directivity.

Moreover, what i suppose is:

Incident power = Accepted power + Mismatch Loss (all in dB)

Please comment, wherever i am wrong.

Thanks in advance