A test system for testing a device under test is described. The test system includes an anechoic chamber for encompassing a device under test to be tested by means of radio frequency radiation. The anechoic chamber has a wall with an opening provided in the wall. The test system also has a feedthrough assembly for transporting a fluid into the anechoic chamber or from the anechoic chamber. The feedthrough assembly has a pipe that extends through the opening such that the pipe is fed through the opening. The pipe is routed such that radio frequency radiation is prevented from leaving the anechoic chamber via the pipe. Furthermore, a feedthrough assembly is described.

A test system for testing a device under test is described. The test system includes an anechoic chamber for encompassing a device under test to be tested by means of radio frequency radiation. The anechoic chamber has a wall with an opening provided in the wall. The test system also has a feedthrough assembly for transporting a fluid into the anechoic chamber or from the anechoic chamber. The feedthrough assembly has a pipe that extends through the opening such that the pipe is fed through the opening. The pipe is routed such that radio frequency radiation is prevented from leaving the anechoic chamber via the pipe. Furthermore, a feedthrough assembly is described.

An antenna assembly for emitting microwaves comprises a dielectric hollow conductor element and a support element, wherein the hollow conductor element has an electrically conductive surface along a circumferential lateral face, the hollow conductor element has an electrically non-conductive emission face, and the hollow conductor element has a coupler receptacle. The support element contains a material having a modulus of elasticity of no less than 50 GPa. The support element surrounds the hollow conductor element at least along the lateral face. The hollow conductor element is fixed in the support element. The support element has an emission opening, and the emission face aligns with the emission opening. The hollow conductor element has a permittivity of no less than 8 at 2 GHz, the hollow conductor element containing a ceramic material, in particular aluminium oxide, zirconium oxide or titanium oxide.

An antenna assembly for emitting microwaves comprises a dielectric hollow conductor element and a support element, wherein the hollow conductor element has an electrically conductive surface along a circumferential lateral face, the hollow conductor element has an electrically non-conductive emission face, and the hollow conductor element has a coupler receptacle. The support element contains a material having a modulus of elasticity of no less than 50 GPa. The support element surrounds the hollow conductor element at least along the lateral face. The hollow conductor element is fixed in the support element. The support element has an emission opening, and the emission face aligns with the emission opening. The hollow conductor element has a permittivity of no less than 8 at 2 GHz, the hollow conductor element containing a ceramic material, in particular aluminium oxide, zirconium oxide or titanium oxide.

The present application relates to a device and a method for detecting SAR and a mobile terminal. The device comprises: an SAR sensor, a plurality of first capacitance limitation modules, a plurality of second capacitance limitation modules, and a plurality of signal isolation modules. The SAR sensor comprises a plurality of detection ports each is configured to perform SAR detection on one antenna. The first end and second end of each first capacitance limitation module are connected to the antenna and the detection port respectively. The first end and second end of each second capacitance limitation module is connected to the detection port and a power control circuit respectively. The first end of each signal isolation module is connected to the antenna; the second end of each signal isolation module is connected to the detection port.

The present application relates to a device and a method for detecting SAR and a mobile terminal. The device comprises: an SAR sensor, a plurality of first capacitance limitation modules, a plurality of second capacitance limitation modules, and a plurality of signal isolation modules. The SAR sensor comprises a plurality of detection ports each is configured to perform SAR detection on one antenna. The first end and second end of each first capacitance limitation module are connected to the antenna and the detection port respectively. The first end and second end of each second capacitance limitation module is connected to the detection port and a power control circuit respectively. The first end of each signal isolation module is connected to the antenna; the second end of each signal isolation module is connected to the detection port.

Systems, device and methods are provided for measuring parameters of a medium such as the dielectric properties of a medium including a plurality of layers, using an array of sensors. The array includes at least two transducers and at least one transceiver attached to the at least two transducers, the at least one transceiver being configured to transmit at least one signal toward the medium and receive a plurality of signals affected by the medium; a data acquisition unit and at least one processor unit, configured to: process the affected plurality of signals to yield a plurality of transfer functions wherein each of the plurality of transfer functions including the medium response between two transducers of the at least two transducers as function of frequency or time; process the plurality of transfer functions to yield a plurality of statistical measures, and process the statistical measures to calculate the medium parameters.

Systems, device and methods are provided for measuring parameters of a medium such as the dielectric properties of a medium including a plurality of layers, using an array of sensors. The array includes at least two transducers and at least one transceiver attached to the at least two transducers, the at least one transceiver being configured to transmit at least one signal toward the medium and receive a plurality of signals affected by the medium; a data acquisition unit and at least one processor unit, configured to: process the affected plurality of signals to yield a plurality of transfer functions wherein each of the plurality of transfer functions including the medium response between two transducers of the at least two transducers as function of frequency or time; process the plurality of transfer functions to yield a plurality of statistical measures, and process the statistical measures to calculate the medium parameters.

A sensor and method for use in measuring a physical characteristic of a fluid in a microfluidic system is provided. A microfluidic chip has a thin deformable membrane that separates a microfluidic channel from a microwave resonator sensor. The membrane is deformable in response to loading from interaction of the membrane with the fluid. Loading may be fluid pressure in the channel, or shear stress or surface stress resulting from interaction of the membrane with the fluid. The deformation of the membrane changes the permittivity in the region proximate the sensor. A change in permittivity causes a change in the electrical parameters of the sensor, thereby allowing for a characteristic of the fluid, such as flow rate, or a biological or chemical characteristic, to be measured. Also, a microwave sensor with improved sensitivity for characterizing a fluid in a microfluidic channel is provided. The sensor has a rigid and very thin layer, for example in the range of 10 um to 100 um, in the microfluidic chip allowing for the positioning of the sensor very close to the microfluidic channel, which enables very high resolution sensing.

A sensor and method for use in measuring a physical characteristic of a fluid in a microfluidic system is provided. A microfluidic chip has a thin deformable membrane that separates a microfluidic channel from a microwave resonator sensor. The membrane is deformable in response to loading from interaction of the membrane with the fluid. Loading may be fluid pressure in the channel, or shear stress or surface stress resulting from interaction of the membrane with the fluid. The deformation of the membrane changes the permittivity in the region proximate the sensor. A change in permittivity causes a change in the electrical parameters of the sensor, thereby allowing for a characteristic of the fluid, such as flow rate, or a biological or chemical characteristic, to be measured. Also, a microwave sensor with improved sensitivity for characterizing a fluid in a microfluidic channel is provided. The sensor has a rigid and very thin layer, for example in the range of 10 um to 100 um, in the microfluidic chip allowing for the positioning of the sensor very close to the microfluidic channel, which enables very high resolution sensing.