A system for direction of arrival determination of an electromagnetic wave, the system comprising: a waveform detector comprising: - a first pair of dielectric structures; and - a second pair of dielectric structures; - wherein the dielectric structures of each pair are substantially identical in terms of size, shape, and material properties; - wherein the dielectric structures of each pair are disposed from one another within a coupling distance for the electromagnetic wave; - wherein each of the dielectric structures has a major axis that extends in a direction along which electromagnetic coupling between pairs of dielectric structures occurs; - wherein the major axes of the dielectric structures of each pair are substantially parallel; - and wherein the major axes of the dielectric structures of the first pair are non-parallel to the major axes of the dielectric structures of the second pair;and processing circuitry configured to determine a direction of arrival of the electromagnetic wave incident on the waveform detector, the direction of arrival determined based on relative power levels in the first pair of dielectric structures responsive to the electromagnetic wave, and based on relative power levels in the second pair of dielectric structures responsive to the electromagnetic wave. a waveform detector comprising: - a first pair of dielectric structures; and - a second pair of dielectric structures; - wherein the dielectric structures of each pair are substantially identical in terms of size, shape, and material properties; - wherein the dielectric structures of each pair are disposed from one another within a coupling distance for the electromagnetic wave; - wherein each of the dielectric structures has a major axis that extends in a direction along which electromagnetic coupling between pairs of dielectric structures occurs; - wherein the major axes of the dielectric structures of each pair are substantially parallel; - and wherein the major axes of the dielectric structures of the first pair are non-parallel to the major axes of the dielectric structures of the second pair;and - a first pair of dielectric structures; and - a second pair of dielectric structures; - wherein the dielectric structures of each pair are substantially identical in terms of size, shape, and material properties; - wherein the dielectric structures of each pair are disposed from one another within a coupling distance for the electromagnetic wave; - wherein each of the dielectric structures has a major axis that extends in a direction along which electromagnetic coupling between pairs of dielectric structures occurs; - wherein the major axes of the dielectric structures of each pair are substantially parallel; - and wherein the major axes of the dielectric structures of the first pair are non-parallel to the major axes of the dielectric structures of the second pair;and processing circuitry configured to determine a direction of arrival of the electromagnetic wave incident on the waveform detector, the direction of arrival determined based on relative power levels in the first pair of dielectric structures responsive to the electromagnetic wave, and based on relative power levels in the second pair of dielectric structures responsive to the electromagnetic wave.