A device for measuring absorbent bodies that are spaced from each other on a continuous web comprises at least two microwave resonators configured to measure values of a shift of a resonance frequency and a spreading of a resonance frequency. The continuous web moves through the at least two microwave resonators and the at least two microwave resonators are positioned at an offset with respect to each other in the transverse and transport direction relative to a direction of transport of the continuous web in order to measure the entire width of the continuous web. At least one of a moisture and a density of the absorbent bodies is determined using the at least two microwave resonators to continuously determine the values of the shift of the resonance frequency and the spreading of the resonance frequency.

In certain embodiments, an apparatus includes a sensing element having a capacitance to a first reference voltage. The capacitance is variable as a function of a proximity of an object to the sensing element. The apparatus further includes a sample capacitor connected to the sensing element and control circuitry connected to the sample capacitor. The control circuitry is configured to supply a charge to the sample capacitor and the sensing element and discharge the sensing element. The control circuitry is further configured to provide, in response to the discharge of the sensing element, a signal indicative of the capacitance to the first reference voltage of the sensing element. The control circuitry is further configured to process the signal to detect a change in the capacitance to the first reference voltage as indicative of the proximity of the object to the sensing element.

In certain embodiments, an apparatus includes a sensing element having a capacitance to a first reference voltage. The capacitance is variable as a function of a proximity of an object to the sensing element. The apparatus further includes a sample capacitor connected to the sensing element and control circuitry connected to the sample capacitor. The control circuitry is configured to supply a charge to the sample capacitor and the sensing element and discharge the sensing element. The control circuitry is further configured to provide, in response to the discharge of the sensing element, a signal indicative of the capacitance to the first reference voltage of the sensing element. The control circuitry is further configured to process the signal to detect a change in the capacitance to the first reference voltage as indicative of the proximity of the object to the sensing element.

A measurement system for matching and/or transmission measurements with respect to a device under test comprising an interface is provided. Said measurement system comprises at least one signal generator comprising at least one signal generator signal path, and at least one receiver comprising at least two receiver signal paths. In this context, a signal of a first signal generator signal path of the at least one signal generator signal path and/or a signal of a first receiver signal path of the at least two receiver signal paths is adaptively phase-shifted and/or amplitude-modified with respect to a signal of a second receiver signal path of the at least two receiver signal paths.

A measurement system for matching and/or transmission measurements with respect to a device under test comprising an interface is provided. Said measurement system comprises at least one signal generator comprising at least one signal generator signal path, and at least one receiver comprising at least two receiver signal paths. In this context, a signal of a first signal generator signal path of the at least one signal generator signal path and/or a signal of a first receiver signal path of the at least two receiver signal paths is adaptively phase-shifted and/or amplitude-modified with respect to a signal of a second receiver signal path of the at least two receiver signal paths.

Methods and systems for RF pulse monitoring and RF pulsing parameter optimization at a manufacturing system are provided. A radio frequency (RF) signal is pulsed within a processing chamber in accordance with a set of process parameters. Sensor data is received from one or more sensors that indicates a RF pulse waveform detected within the processing chamber. One or more RF signal characteristics are identified in the detected RF pulse waveform. Each identified RF signal characteristic corresponds to at least one RF signal pulse of the RF signal pulsing within the processing chamber. A determination is made, based on the identified one or more RF signal characteristics, whether the detected RF pulse waveform corresponds to the target RF pulse waveform. An indication of whether the detected RF pulse waveform corresponds to the target RF pulse waveform is provided to a client device.

The disclosure is directed to an observation circuit for observing an input impedance at a high frequency connector of a mobile device terminal, the observation circuit comprising a measurement circuitry, wherein the measurement circuitry comprises the high frequency connector, a reference impedance, a voltage source, and a voltage meter. A first output electrode of the voltage source is connected to both a first electrode of the high frequency connector and a first input electrode of the voltage meter over the reference impedance, and a second output electrode of the voltage source is connected to both a second electrode of the high frequency connector and a second input electrode of the voltage meter.

Device for electric and magnetic measurements. In some embodiments, an electrical probe can be configured to include an unshielded inner conductor at an end of a coaxial assembly to allow an electrical field to induce differential-mode currents in the coaxial assembly. In some embodiments, a magnetic probe can be configured to include a loop connected to inner and outer conductors of a coaxial assembly to induce a common mode current by a change in magnetic field flux through the loop. In some implementations, such probes can be utilized to obtain near-field measurements to facilitate applications such as electromagnetic (EM) shielding designs.

Disclosed are a method, apparatus, system and terminal device for measuring the total radiated power of an array antenna, and a non-transitory computer-readable storage medium. The method includes: dividing an array antenna to be measured into N antenna sub-arrays, the N being greater than or equal to 2; determining a sampling interval according to the sizes of the N antenna sub-arrays; determining sampling points according to the sampling interval; and determining the total radiated power of the entire array antenna according to the equivalent isotropic radiated power of the sampling points.

To provide a wireless communication module that implements the function to detect a human body in a conserved space and is capable of detecting a proximity to human bodies with high accuracy. A wireless communication module includes an antenna unit and a proximity detector which detects that a human body has approached the module. The antenna unit includes an antenna and a first filter which is comprised of distributed constant elements. The proximity detector for human bodies uses the antenna and the first filter as an electrode to detect capacitance.