Determining the self-resonant frequency (SRF) of a flat spiral inductor involves understanding both its inductance and capacitance. While inductance can be calculated, capacitance is more challenging to ascertain theoretically. Experimental methods, such as applying a square wave and analyzing the results with a spectrum analyzer, can provide direct measurements of SRF. The relationship ω=√(LC) can be used if the inductance is known, but theoretical calculations for capacitance remain complex. The discussion highlights the difficulties in obtaining straightforward solutions in engineering, particularly for printed circuit board applications.
