About: http://webisa.webdatacommons.org/94556147

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The crossover distance between near and far fields (Rff) is taken to be where the phase error is 1/16 of a wavelength, or about 22.5??. [2] where ?? is the wavelength and D is the largest dimension of the transmit antenna.
http://www.w3.org/ns/prov#wasQuotedFrom	rfcafe.com