A method and apparatus are disclosed for delivering energy substantially distal to an electrosurgical device. A preferred embodiment comprises sampling a received signal wherein the received signal is real-valued, rotating the sampled received signal by a specified amount, extracting in-phase and quadrature phase streams from the rotated, sampled received signal, applying an interference suppression filter and combining the filtered streams. The beams may be shaped to be collimated, diverged, or converged. The nozzles may be configured to translate relative to an area of a substrate to allow sequential deposition.