Patent ID: 9568367
Date: 2017-02-14
CPC Classifications: G01J,G01T,H01Q

Claim:
1. A sensing device, comprising: a thermal antenna that comprises a resistive material, wherein the thermal antenna has at least one cross section that has dimensions that are of an order of a micron or of a sub-micron, wherein the thermal antenna is arranged to receive electromagnetic radiation and to directly convert the electromagnetic radiation to heat; wherein the thermal antenna is shaped as a first loop and is arranged to act as a band pass filter for at least one frequency range out of infrared frequency range and terahertz frequency range; a supporting element arranged to support a holding element; a thermal sensor arranged to generate detection signals responsive to a temperature of a sensed area of the thermal antenna; wherein the holding element is shaped as a second loop for receiving radiation at a second frequency range that differs from the at least one frequency range out of the infrared frequency range and the terahertz frequency range; wherein the holding element is arranged to: a readout circuit that is electrically coupled to the thermal sensor, the readout circuit is arranged to receive the detection signals and to process the detection signals to provide information about the electromagnetic radiation that is directly converted to heat by the thermal antenna; and wherein the thermal sensor and the thermal antenna are spatially separated from the supporting element.