This work presents the main geometric constraints that affect the performance of a passive interferometer at 94 GHz for security screening applications by means of a reviewed definition of the Far Field condition in close range detection
applications. This new approach allows to easily give, in a first order approximation, the number of antennas, the array size and
the target range by using well known far field tools.
Torres, F. [et al.]. Far field condition in passive interferometry for security screening applications. A: European Conference on Antennas and Propagation. "Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on". Barcelona: IEEE, 2010, p. 1-4.