There is a great article by gizmodo, which gives an example of what would be required:
- Power- 700W
- Thrust- 88 uN
- System Mass- 9 kG
To get 700W of power would require about 2 square meters of high efficiency solar panels, which is probably beyond most small satellites, but could still potentially be done. Where this could fairly easily be done is the International Space Station, however, the small thrust generated from this system would be difficult to distinguish from atmospheric drag.
The bottom line is, in order to make this work in space today, one would need a "mini" class satellite, probably one with ~100 kg. Those aren't exactly cheap, so I believe testing this on orbit would not be practical at this time, until further tests indicate that this does indeed work.