Abstract: The present invention provides a sensor comprising at least one whispering gallery mode resonator, wherein the resonator comprises a Bragg grating arranged over at least a portion of the perimeter of the resonator and wherein the resonator is selectively functionalized for the attachment of analyte receptors.

Abstract: The present invention relates to a gesture detection Apparatus and Method of Operation comprising of an mm-wave radar sensor, having an integrated mm-wave IC front end, with special arrangement of the antenna system, with a new art of angle detection and which does not contain radio down-conversion topology, common in non-professional radar systems. The proposed Apparatus is capable of detecting the two dimensional target angle, having an inherently low-cost system topology, suitable as a replacement in functionality for the commonly used gesture detection system in consumer applications. The proposed apparatus topology consist of two transmitting planar antennae, and two pairs of receiving antennae without the down-conversion of receiver chains, but with introduced analog signal combining structures and mm-wave power detectors. The complete proposed sensor apparatus topology with integrated antennae, mm-wave IC and digital processing parts may be realized in a module smaller than 1×1×0.