A radio frequency (RF) based waveguide health monitoring system is disclosed. The system employs an RF transmitter for launching a probe RF waveform into a waveguide. Reflections, etc., from the interior of the waveguide of the probe RF waveform create a signature RF waveform, with a health RF receiver receiving this resultant signature RF waveform. A health processing system analyzes the signature RF waveform, and when it detects a change indicative of a deformation of the waveguide, generates a warning signal. This change may be due to bends, flexes, vibrations (or changes in vibrations), or separations of the waveguide. The system may have low frequency, high frequency, or high frequency imaging modes. The system may employ a high-power probe RF waveform, thereby enabling a wireless charging system with power RF receivers located along the length of the waveguide providing additional functionality.

A radio frequency (RF) based waveguide health monitoring system is disclosed. The system employs an RF transmitter for launching a probe RF waveform into a waveguide. Reflections, etc., from the interior of the waveguide of the probe RF waveform create a signature RF waveform, with a health RF receiver receiving this resultant signature RF waveform. A health processing system analyzes the signature RF waveform, and when it detects a change indicative of a deformation of the waveguide, generates a warning signal. This change may be due to bends, flexes, vibrations (or changes in vibrations), or separations of the waveguide. The system may have low frequency, high frequency, or high frequency imaging modes. The system may employ a high-power probe RF waveform, thereby enabling a wireless charging system with power RF receivers located along the length of the waveguide providing additional functionality.

The present exemplary embodiments provide a signal detection circuit and a sensor which improve a quality factor of a resonator by modeling an initial state of the resonator using an attenuator and a phase shifter which are modeling paths and significantly change a transmission coefficient of the resonator even with a small variation of an object to be measured.

The present exemplary embodiments provide a signal detection circuit and a sensor which improve a quality factor of a resonator by modeling an initial state of the resonator using an attenuator and a phase shifter which are modeling paths and significantly change a transmission coefficient of the resonator even with a small variation of an object to be measured.

A system for the automated validation of a semi-anechoic chamber (SAC) is disclosed. The system includes a receive assembly and a transmit assembly, each configured to autonomously relocate within the SAC. The system also includes a local client communicatively coupled to the transmit assembly. The local client is configured to send a validation arrangement to the transmit assembly describing a validation location and a distance. The transmit assembly is configured to receive the validation arrangement, move the transmit assembly to the validation location and send an instruction to the receive assembly, the instruction describing the distance. The receive assembly is communicatively coupled to the transmit assembly and configured to receive the instruction and move the receive assembly such that a separation between the transmit and receive assemblies is restored to the distance. Each validation arrangement corresponds to a validation point. A plurality of validation points defines a test volume.

The invention includes a device for determining the moisture or conductivity of a medium in a container. A measurement probe is plunged into the medium and consists of a conductive material, a conductive rod, and a first feed-through component designed such that the conductive rod can be fastened to an electrically conductive wall or holder. A rod of a non-conductive material and a second feed-through component are provided, where the non-conductive rod can be fastened to the wall, the conductive rod and the non-conductive rod are dimensioned and oriented that the measurement probe is oriented parallel to the longitudinal axis of the container and a signal-processing unit designed such that high-frequency measurement signals are conducted via the measurement line to the measurement probe and that the moisture or the conductivity of the medium is determined by means of a TDR method.

There is disclosed a probe used with a measurement instrument including a pulse circuit for generating pulses. A coaxial connector is secured to the probe case so that the probe case is electrically connected to the ground shield. A center rod has a top end received in the probe case and to extend into a process liquid. The center rod is electrically connected to the center terminal for conducting the pulses. Ground rods are spaced around the center rod and are secured to the probe case. The probe provides an open configuration less susceptible to build-up between the center rod and the ground rods. One or more of the ground rods may by tubes, connected to a flushing port, with nozzles for cleaning the enter rod. Another ground rod may be tubular for carrying a conductor connected to a bottom of the center rod for bottom-up measurement.

The focus of the teachings is on using Compact ferrite antenna to detect the motion of metal objects using a very low frequency (VLF) square wave, propagated between a pair of compact ferrite-particle dielectric-core RWA antennas in free space. The two salient features in the signal are observed; both of which are characteristic of Brillouin-precursor propagation: (1) a temporal Bessel-like waveform; and (2) an algebraic, rather than exponential, attenuation with distance over three meters. The key element teaching shows pair of source and detector antenna enables the detection of metals (weapon gun, knife) on a person or package between the ferrite- particle dielectric-core antennas- source (S) and detector (D) pairs or arrays of S-D tractor. The detection consisted of a change in the amplitude of the Bessel-like waveform of the received signal for security system to detect weapons.

Footwear scanning systems and associated methods are described. According to one aspect, a footwear scanning system includes a base, a shuttle configured to rotate beneath the base, wherein the shuttle comprises an antenna array configured to transmit electromagnetic waves through the base into footwear above the base during the rotation of the shuttle and to receive electromagnetic waves reflected from the footwear during the rotation of the shuttle, a transceiver coupled with the antenna array and configured to apply electrical signals to the antenna array to generate the transmitted electromagnetic waves and to receive electrical signals from the antenna array corresponding to the received electromagnetic waves, and processing circuitry configured to process an output of the transceiver corresponding to the received electromagnetic waves to provide information regarding contents within the footwear.

A multi-stage process for the production of an ISO 8217 Table 2 residual marine fuel Product Heavy Marine Fuel Oil from a Feedstock Heavy Marine Fuel Oil that is ISO 8217:2017 Table 2 compliant except for the Environmental Contaminants involves a Reaction System composed of one or more reactor vessels selected from a group reactor wherein said one or more reactor vessels contains one or more reaction sections configured to promote the transformation of the Feedstock Heavy Marine Fuel Oil to the Product Heavy Marine Fuel Oil. The Product Heavy Marine Fuel Oil has an Environmental Contaminant level less than 0.5 wt % and preferably a maximum sulfur content (ISO 14596 or ISO 8754) between the range of 0.05 mass % to 0.5 mass %. A process plant for conducting the process for conducting the process is also disclosed.