US 12,345,752 B2
Sensor system and method for calibrating a sensor system
Thomas Ruster, Munich (DE); Yongqi Shi, Basel (CH); Philipp Treutlein, Basel (CH); and Melvyn Ho, Munich (DE)
Assigned to Rohde & Schwarz GmbH & Co. KG, Munich (DE); and University of Basel, Basel (CH)
Filed by Rohde & Schwarz GmbH & Co. KG, Munich (DE); and University of Basel, Basel (CH)
Filed on Jun. 26, 2023, as Appl. No. 18/341,295.
Prior Publication US 2024/0426886 A1, Dec. 26, 2024
Int. Cl. G01R 29/08 (2006.01); G01R 35/00 (2006.01)
CPC G01R 29/0878 (2013.01) [G01R 29/0892 (2013.01); G01R 35/005 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A sensor system for sensing electromagnetic, EM, radiation, comprising:
a sensing element having multiple resonances;
wherein the sensing element is arranged to receive a number of calibration signals or signal components with different frequencies;
a recording device configured to record responses of the sensing element to at least two of the number of calibration signals or signal components, wherein the respective responses depend on an excitation of one or more of the resonances by the corresponding calibration signals or signal components;
a data storage configured to store at least a part of the recorded responses and/or information derived from at least a part of the recorded responses in a model which correlates the responses to frequencies and/or signal levels of the corresponding calibration signals or signal components; and
a processor configured to use the model to convert a further response of the sensing element to an EM signal to be analyzed into a frequency spectrum of the EM signal.
 
11. A method for calibrating a sensor system for sensing electromagnetic, EM, radiation, wherein the sensor system comprises a sensing element having multiple resonances, the method comprising the steps of:
transmitting a number of calibration signals or signal components with different frequencies towards the sensing element;
recording responses of the sensing element to at least two of the number of calibration signals or signal components, wherein the respective responses depend on an excitation of one or more of the resonances by the corresponding calibration signals or signal components; and
storing at least a part of the recorded responses and/or information derived from at least a part of the recorded responses in a model which correlates the responses to frequencies and/or signal levels of the corresponding calibration signals or signal components;
wherein the model enables the sensor system to convert a further response of the sensing element to an EM signal to be analyzed into a frequency spectrum of the EM signal.