  We report on a novel rectification phenomenon in a 2-D lattice network
consisting of $N\times N$ sites with diode and AC source elements with
controllable phases. A phase cascade configuration is described in which the
current ripple in a load resistor goes to zero in the large $N$ limit,
enhancing the rectification efficiency without requiring any external capacitor
or inductor based filters. The integrated modular configuration is
qualitatively different from conventional rectenna arrays in which the source,
rectifier and filter systems are physically disjoint. Exact analytical results
derived using idealized diodes are compared to a realistic simulation of
commercially available diodes. Our results on nonlinear networks of
source-rectifier arrays are potentially of interest to a fast evolving field of
distributed power networks.
