I'm looking for the complex feed point impedance of an ideal Hertzian dipole in free space as a function of frequency? Kind of an advanced question, hope someone can help.

I'm looking for the complex feed point impedance of an ideal Hertzian dipole in free space as a function of frequency? Kind of an advanced question, hope someone can help.

If the dipole is used below its design frequency the real resistive part is less than 73 ohms and the reactance is negative. If the dipole is used above its design frequency the real resistive part is more than 73 ohms, and the reactance is positive. The change in reactance is more rapid with thin diameter elements because of higher Q.

If the dipole is used below its design frequency the real resistive part is less than 73 ohms and the reactance is negative. If the dipole is used above its design frequency the real resistive part is more than 73 ohms, and the reactance is positive. The change in reactance is more rapid with thin diameter elements because of higher Q.

wonderful, thank you. I had asked this question elsewhere but not one could help out. Sad part is, I had seen that wiki article but didn't catch browsed right over that info.