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impedance matching for antenna in hfss

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aswin_kmr

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how can we know is there perfect impedance matching for our antenna which is designed in hfss?
 

moh.haroun

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you need to plot the input impedance of the antenna which is, in the case of single port network, Z11. The real part should be around 50 and the imaginary part should be crossing zero at that point. An alternative way is to plot S11 and the antenna is considered to be matched when S11<=-10dB.
 

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