Superimpose a High Frequency AC Small Signal on a DC Power Signal
In the RF world, this circuit is called a bias tee.

You should realize that on the RF side, 1-30 MHz is a fairly wideband requirement, spanning nearly 5 octaves of frequency.


  the real challenge I am seeing is the inductors sized to carry the currents required have a self resonant frequency typically &lt;2MHz


You may find that a series combination of inductors gives a better result than a single inductor. One with high value and low SRF, one with lower value and higher SRF.