| graphical representation of the frequency response by polar coordinates as a curve in the complex plane with the angular frequency as the curve parameter SEE: Figure 9. Note 1 to entry: At the frequency response locus the modulus (absolute value) of the polar coordinates is the gain and its argument is the phase angle at a given angular frequency. Note 2 to entry: This entry was numbered 351-24-41 in IEC 60050-351:2006.
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