Building a small 2.4 GHz detector:

http://www.atvinderby.co.uk/2.4Ghz_SWR_Meter.htm

Regarding the dimensions of the wire loops:

ant: 28 mm square
reflector: 30 mm square
separation: 10mm
wi 14ga solid (1.6mm dia)

Are these dimensions center-to-center of the conductors? Or are these
dimensions the space between the conductors? With a conductor diam of 1.6mm,
this is more than 10 percent of one dimension (separation), so I think it's
important to get it right.

Also, is the reflector to be grounded or floating?

Thanks.