Digilent offers their 471-043 universal software radio peripheral (USRP) board as an easy way to develop software-based radios in your project. We’ve had a few questions recently concerning the power supply for this board, whether we have it, and what size power jack it uses.
The recommended power supply for the board is Same Sky’s SMI24-6-NEBA-P5-C1, which uses a 2.1x5.5x9.5mm output jack. A similar, though not identical, power supply is PSAA20R-050L6-R.