selection of RF inductors
SRF is self resonant frequency. It's the frequency where the inductance resonates with the parasitic capacitance between one coil and the next (called interwinding capacitance). Including the main parasitics, a real inductor acts something like this circuit:







simulate this circuit &ndash; Schematic created using CircuitLab

At some frequency, the admittance due to the capacitance cancels the admittance due to the indcutance (\$j\omega{}C=-1/(j\omega{}L)\$, which gives a net zero admittance (slightly modified by the resistive parasitic). 

Above this frequency, the component behavior is dominated by the capacitance rather than the inductance, which means you need to choose an inductor with SRF above your operating frequency if you want it to act like an inductor instead of a capacitor.