I am soon building a desk and I thought an interesting feature to have would be for the entire desk to essentially be a giant QI charger for my phone. Obviously, however, this has the problem that maximum charging range for QI is about 1.5cm. I wondered if, using large amounts of copper wire, I could make a large coil - as in the size of the desk - to charge a phone or other QI compatible device placed anywhere on it. I am fairly new to the actual way wireless charging works, so my question is would this work, and if not is there anything I could do aside from covering the desk in coils?
Thanks in advance,