The invention relates to a method and a system for determining test signals for electromagnetic susceptibility, EMS, testing of a device-under-test, DUT. The method comprises the steps of: receiving at least one DUT parameter which defines a property of the DUT; receiving at least one environmental parameter which defines an electromagnetic environment, EME, in which the DUT is to be used; receiving information on an EM emission behavior, in particular an emission spectrum, of the DUT; and inputting the at least one DUT parameter, the at least one environmental parameter and the information on the EM emission behavior to a machine learning, ML, or artificial intelligence, AI, model. The ML or AI model is configured to determine one or more test signals for EMS testing of the DUT based on the at least one DUT parameter, the at least one environmental parameter and the information on the EM emission behavior.

A communication device that incorporates the subject disclosure may include, for example, a conductive cover, an antenna structure, and a circuit. The antenna structure can comprise a first portion of the conductive cover having a first slot formed therein. The first portion can form a first antenna element for converting between first electromagnetic signals and first electrical signals. The first slot can define a shape of a trade dress design in the conductive cover. The circuit can be communicatively coupled to first edges of the first slot to define a first port. The circuit can perform operations comprising transmitting the first electronic signals into the first antenna element. Other embodiments are disclosed.

In a general aspect, a system is described herein for detecting the phase properties of a radio frequency (RF) wave. The system includes a vapor cell sensor that contains a vapor and is configured to generate an optical signal in response to laser signals that interact with the vapor. The vapor has a Rydberg electronic transition that interacts with a target RF electromagnetic field, and the optical signal is based on a transmission of one of the laser signals through the vapor. The system also includes an optical detection system and a signal processing system. The optical detection system is configured to generate a detector signal in response to receiving the optical signal, and the signal processing system is configured to receive the detector signal and perform operations that determine a phase change of the target RF electromagnetic field.

A system of tracking load switching operations and fault clearing operations of at least one circuit breaker in a power circuit includes at least one coil antenna sensing changes in a magnetic field around the coil antenna. The changes in the magnetic field induce corresponding changes to a current or voltage in the at least one coil antenna. A receiver is connected to the at least one coil antenna and receives the current or voltage. A computer is connected to the receiver and stores a data stream that corresponds to the changes in magnetic field around the at least one coil antenna. The computer uses the data stream to generate a plurality of characteristic magnetic field waveforms for the at least one circuit breaker. The computer assembles a low frequency magnetic signature for a respective circuit breaker from the characteristic magnetic field waveforms generated for the respective circuit breaker.

Systems and methods for converting the result of a radio frequency (RF) measurement into the quantum capacitance of a device are described. An example method includes, by performing a radio frequency (RF) measurement, extracting frequency shift and resonator loss shift of a resonator relative to a reference trace of the resonator, where the resonator is coupled to a quantum device. The method further includes from the extracted frequency shift and the resonator loss shift, without resonator fitting, deriving both a real part and an imaginary part of a quantum capacitance associated with the quantum device.

Provided herein are systems, apparatuses, and methods for a Radio-Frequency sensor for instantaneous wireless biomarker detection.

Disclosed is an open-structured RF transmitting and receiving coil system including: a magnetic field generation part configured to generate a magnetic field to detect the position of magnetic particles located in a three-dimensional space; a detection part configured to receive a reflection signal from the magnetic particles receiving the magnetic field; and a cancellation part connected to the detection part and including a calibration coil.

A battery fire prevention and diagnosis system in accordance with the present invention comprises: an ultra-high frequency (UHF) sensor for measuring radiated electromagnetic wave installed inside or outside a battery system; a data acquiring unit for receiving the radiated electromagnetic wave signals measured from the UHF sensor; noise/defect cause database including on-site noise data related to a site in operation, and data on causes of defects; and a diagnosis unit for determining abnormality of the battery system, and a cause of a defect based on the radiated electromagnetic wave signal data acquired from the data acquiring unit, and the on-site noise data and the data on causes of defects in the noise/defect cause database.

A hybrid adaptive multi-band ferrite helix array antenna system for HF communications incorporates a segmented ferrite core with controllable segments using optimized ferrite materials for specific frequency ranges, and features both flat copper tape and Litz wire conductors with electronic switching for optimal performance across frequency ranges. A segmented cap hat system varies electrical diameter control and elevation patterns. Electronic switching networks with PIN diodes and distributed varactor diodes enable continuous frequency tuning. Three-dimensional beam steering occurs through coordinated control of segment phasing, parasitic elements, and cap hat asymmetry, and achieves a broad operating frequency coverage of 1.6 MHz to 54 MHz with automatic mode selection and machine learning optimization. The compact package measures 420 mm height by 200 mm diameter, providing comprehensive HF and 6-meter band performance, with efficiency ranges from 15% to 85% and sub-100 s pattern switching capability. This system is suitable for mobile and space-constrained applications.

Systems and methods for converting the result of a radio frequency (RF) measurement into the quantum capacitance of a device are described. An example method includes, by performing a radio frequency (RF) measurement, extracting frequency shift and resonator loss shift of a resonator relative to a reference trace of the resonator, where the resonator is coupled to a quantum device. The method further includes from the extracted frequency shift and the resonator loss shift, without resonator fitting, deriving both a real part and an imaginary part of a quantum capacitance associated with the quantum device.