So I'm trying to make relatively a large square coil antenna that will operate at 125kHz frequency.
The width and height of antenna are 300mm (30cm) and wire diameter is AWG24 (0.51mm) and I'd like to keep number of turns pretty low (under 30).
To calculate inductance I entered antenna parameters to this calculator and came up with inductance value of 0.000731H (with number of turns being 22; width, height=300mm; wire diameter=0.51mm; permeability=1).
I then calculated resonant frequency with another calculator where I entered the inductance value I got before (0.000731H) and capacitance of 2.2nF. The resulting resonant frequency was 1.2550 Hertz which is only about 0.00125kHz, way below 125khz which I need.
Now to achieve 125kHz I could increase the inductance to 731H by making number of turns equal 22,000 but this idea doesn't seem to be very practical. Does anyone has any suggestions to solve this problem?