25 results about "RF probe" patented technology

The invention provides a near-field scanning rapid imaging device for the radio frequency performance of a multi-channel electrically tunable base station antenna, and relates to the technical field of radio frequency antenna testing, the device comprises a scanning assembly and a data processing module, the scanning assembly is composed of a radio frequency probe installed on a two-dimensional precision displacement platform and a vector network analyzer connected with the radio frequency probe, and the data processing module is connected with the scanning assembly. The scanning module is used for performing point-by-point scanning in an antenna near-field area along a preset plane grid path and collecting scattering parameters representing electromagnetic field characteristics at sampling points to form a near-field scanning data set; and the data processing module receives the data set, executes fast Fourier transform operation, and converts near-field data into far-field radiation characteristics so as to generate a far-field radiation pattern representing the radio frequency performance of the antenna. And the data processing module applies a preset static compensation matrix to the near-field data before conversion, so that the mutual coupling effect between the probe and the antenna is inhibited, and the accuracy of a measurement result is improved.

Radio frequency (RF) probes are shown and disclosed. In some embodiments, the RF probe includes a dielectric waveguide having opposed first and second longitudinal end portions and a conducting ground member being received in the first end portion of the dielectric waveguide. The conducting ground member includes an end portion with at least a first prong. The probe assembly additionally includes a conducting transition member received in the first end portion of the dielectric waveguide and spaced from the conducting ground member. The conducting transition member includes an end portion that includes a second prong spaced from the first prong.

The utility model discloses a combined radio frequency electrode, and relates to the technical field of medical instruments. The radio frequency thermal coagulation electrode integrates multiple functions of ultrasonic guidance, a temperature sensor, an impedance sensor, a nerve plexus stimulation needle, a radio frequency thermal coagulation electrode and the like. The radio frequency sleeve is composed of a needle tube, an insulating layer, a sleeve seat, a lock cap, a sheath and the like. And various head structures are provided for clinical selection. The radio frequency probe is composed of a sheath tube, an electrode wire, a probe seat, a color code tube, a wire and a plug. Wherein an ultrasonic guide mark is added at the front end of the probe, so that ultrasonic guide can be adopted when the radio frequency thermal coagulation electrode punctures and enters a target part of a human body, and the harm of ionizing radiation to a medical patient is avoided. The radio frequency sleeve and the probe are locked together through the locking sleeve seat and the probe seat. After the combined multifunctional radio frequency thermal coagulation electrode is connected with a radio frequency therapeutic apparatus, various operations such as temperature measurement, impedance measurement, electrical stimulation positioning, nerve blocking, radio frequency thermal coagulation and the like can be carried out.

In accordance with one or more embodiments herein, a system 100 is provided for healing RFA treatment of a treatment zone 300 comprising at least a portion of a cancer tumor by applying RF energy between an electrode disposed on a non-insulated ablation portion 124 of an RF probe 120 and another electrode 160. The system 100 comprises: a control device 110; an RF probe 120 comprising a non-insulating ablation portion 124; a temperature measurement device 130 arranged to measure the RF probe temperature and provide an estimate of the treatment zone temperature T to the control device 110 based thereon; a cooling device 140 provided to be controlled by the control device 110 to cool the RF probe 120; and RF generating means 150 controlled by the control means 110 to provide an amount of RF energy required to maintain the desired treatment zone temperature TD to the RF probe 120 based on the estimated treatment zone temperature T. The control device 110 is arranged to monitor the RF energy provided to the RF probe 120 by the RF generating device 150 and to turn off the RF generating device 150 at a point in time tP3 at which the output power of the RF generating device 150 is no longer substantially reduced.

Radio frequency (RF) probes are shown and disclosed. In some embodiments, the RF probe includes a dielectric waveguide having opposed first and second longitudinal end portions and a planar conducting ground member being received in the first end portion of the dielectric waveguide. The conducting ground member includes an end portion with at least a first prong. The probe assembly additionally includes a conducting transition member received in the first end portion of the dielectric waveguide and spaced from the planar conducting ground member. The conducting transition member includes an end portion that includes a second prong spaced from the first prong.

The application provides a near-field scanning fast imaging device for radio frequency performance of a multi-channel electrically adjustable base station antenna, and relates to the technical field of radio frequency antenna testing.The device comprises a scanning component and a data processing module.The scanning component is composed of a radio frequency probe installed on a two-dimensional precision displacement platform and a connected vector network analyzer, is used for point-by-point scanning along a preset planar grid path in the near-field area of the antenna, and collects scattering parameters representing electromagnetic field characteristics at each sampling point to form a near-field scanning data set.The data processing module receives the data set and performs a fast Fourier transform operation to convert the near-field data into far-field radiation characteristics, thereby generating a far-field radiation pattern representing the radio frequency performance of the antenna.A preset static compensation matrix is applied to the near-field data by the data processing module before transformation to suppress the mutual coupling effect between the probe and the antenna and improve the accuracy of the measurement results.

The radio frequency probe assembly comprises a connecting seat, a probe and a connecting shaft, the probe comprises a first connecting plate, a second connecting plate, an electrode plate and a spring, one end of the connecting shaft is connected to the connecting seat, the other end of the connecting shaft is connected to the first connecting plate, and the second connecting plate is connected to the back side of the electrode plate. The first connecting plate and the second connecting plate are spaced by a certain distance in the extending direction of the connecting shaft, one end of the spring is connected to the first connecting plate, and the other end of the spring is connected to the second connecting plate. During use, the radio frequency probe assembly is mounted on the robot, radio frequency energy is conducted to the electrode plate by the robot host and then acts on a human body, and when the radio frequency probe assembly slides on the human body, the spring automatically adjusts elasticity according to different heights and hardness of the human body, so that the radio frequency probe assembly easily slides on the human body; the patient cannot feel uncomfortable and painful, and discomfort brought to the human body due to the fact that the probe slides on the human body and is different in height and hardness of the human body is relieved.

A data adjustment method in a radio frequency operation is provided, which includes providing radio frequency signals with a preset power value and outputting the radio frequency signals to a radio frequency probe; detecting physical characteristic data of an object of a present radio frequency operation in real time; determining a power adjustment algorithm according to the type of the radio frequency probe when the physical characteristic data exceeds the preset range, calculating a target power value according the power adjustment algorithm and adjusting the radio frequency output power to the target power value; and adjusting the preset range according to the physical characteristic data detected in real time in a preset period of time before a present moment when the physical characteristic data does not exceed the preset range.

The application belongs to the technical field of medical apparatus and instruments, and discloses a non-contact tumor cell in-vitro screening device and method, which comprises a wireless radio frequency probe built-in wideband radio frequency transceiver antenna unit, a multi-stage adjustable impedance matching network, a near-field coupling radiation structure and a radio frequency detection circuit, which are used for transmitting 1MHz-100GHz frequency band electromagnetic waves and synchronously receiving echo signals and near-field scattering signals; a signal processing system is connected with the wireless radio frequency probe and is used for pre-processing and feature extraction of the dual-mode signals; a control unit is internally provided with an AI fusion system, which is used for feature fusion analysis of the pre-processed dual-mode signals and outputs a benign and malignant determination result; the AI fusion system comprises an IC-CF-DMAS image reconstruction module, a one-dimensional convolutional neural network module, a cross-attention fusion module, a weighted voting decision module and a classification head, realizes deep interaction and accurate determination of cross-modal features, and realizes low cost, no radiation, rapidness, non-invasiveness, portability and high accuracy of early tumor screening.

A testing system and method for testing a Printed Circuit Boards (PCBs) is provided. The method is being executed at a testing system which comprises a RF test analyzer; a RF energy source; and one or more RF probes. The method includes performing a first level scanning of a first set of components in the PCB. The method further includes performing a second level scanning of another set of components in the PCB, which differs from the first set of components in the PCB; the second level scanning is performed only if anomalies are identified which is based on analyzing the results of the performed first level scanning. The method further includes determining detailed root causes of the identified anomalies which is based on analyzing results of the performed second level scanning.

This invention discloses a calibration structure and method for D-band glass vias, belonging to the field of microwave / millimeter-wave interconnect and packaging testing technology. It includes: independent metal pads corresponding to signal lines and ground lines for RF probe contact; a bottom metal plate; and at least one set of glass vias formed on a glass substrate for D-band signal transmission, enabling signal transmission between the metal pads and the bottom metal plate. The calibration structure is used to calibrate the scattering parameters of the glass vias: by setting differences in the transmission length or termination state of the bottom metal plate, the scattering parameters of the calibration structure are tested, and the bulk scattering parameters of the glass vias are indirectly obtained. This method can be used to design glass vias suitable for D-band signal transmission and to measure the bulk scattering parameters of the glass vias.

This utility model relates to an RF probe suitable for testing CBGA-packaged SiP microwave modules. The utility model includes a bobbin case, a polytetrafluoroethylene (PTFE) dielectric material, an oxygen-free copper shield, a semi-steel cable, and a 2.92 mmWave RF connector. One port of the bobbin case is elastically interconnected with the RF and ground ports of the CBGA-packaged SiP microwave module, and the other port is elastically interconnected with the inner conductor of the semi-steel cable and the oxygen-free copper shield. The bobbin case and the PTFE dielectric material have a transition fit; the PTFE dielectric material and one mounting hole of the oxygen-free copper shield have a transition fit; the second mounting hole of the oxygen-free copper shield has a transition fit with the dielectric layer of the semi-steel cable; the oxygen-free copper shield and the shielding layer of the semi-steel cable are interconnected by solder; and the shielding layer of the semi-steel cable is interconnected by solder. This utility model solves the problems of high cost and poor performance when using testing fixtures for CBGA-packaged SiP microwave modules.

A modular multi-functional radiofrequency (RF) thermocoagulation electrode includes an RF cannula and an RF probe. The RF cannula is composed of a needle tube, an insulating layer, a cannula hub, a lock cap, and a protective sleeve, and is available with multiple head structures for clinical selection. The RF probe is composed of a sheath tube, an electrode filament, a probe hub, a color marker tube, a connecting wire, and a plug. The RF cannula and the RF probe are locked together by securing the cannula hub to the probe hub.

The present application relates to a kind of radio frequency probe, magnetic resonance coil structure and its manufacturing method.The magnetic resonance coil structure includes: cold plate for transferring cold quantity;And radio frequency coil is arranged on the cold plate;Radio frequency coil is attached between the cold plate by negative pressure mode;When cold plate refrigerates radio frequency coil, since radio frequency coil and cold plate are closely attached, the cold quantity of cold plate can be effectively transferred to radio frequency coil, to effectively reduce the temperature of radio frequency coil, improve refrigeration efficiency, realize efficient cold conduction, to improve the signal-to-noise ratio of radio frequency coil, while also guarantee the use performance of radio frequency probe, guarantee the imaging effect of magnetic resonance equipment.Moreover, the radio frequency coil is attached to the cold plate by negative pressure mode, without using embedding mode or 3D printing mode, reduce the complexity of process, easy to realize.

The application discloses a combined multifunctional radio frequency heat condensation electrode, and relates to the technical field of medical devices.The radio frequency heat condensation electrode integrates ultrasonic guidance, temperature sensors, impedance sensors, nerve plexus stimulation needles, radio frequency heat condensation electrodes and other functions.The radio frequency heat condensation electrode is composed of a needle tube, an insulating layer, a sleeve seat, a lock cap, a sheath and the like; and various head structures are provided for clinical selection.The radio frequency probe is composed of a sheath tube, an electrode wire, a probe seat, a color code tube, a lead wire and a plug; an ultrasonic guidance mark is added to the front end of the probe, so that the radio frequency heat condensation electrode can be guided by ultrasonic waves when puncturing into a target site of a human body, and thus the harm of ionizing radiation to a patient is avoided.The radio frequency sleeve and the probe are locked together through the locking sleeve seat and the probe seat, and the combined multifunctional radio frequency heat condensation electrode can perform temperature measurement, impedance measurement, electric stimulation positioning, nerve block, radio frequency heat condensation and other operations after being connected with a radio frequency therapeutic instrument.

The application discloses a compact novel RF MEMS series capacitance switch and belongs to the technical field of radio frequency micro electro mechanical system.The switch comprises back metal, a substrate, a negative electrode nonmetal DC bias line, an artificial air bridge, a DC port, a positive electrode nonmetal DC bias line, a right lower layer anchor point, a defect coplanar waveguide ground, a coplanar waveguide signal line, an electrode dielectric layer, a right upper layer anchor point, a metal cantilever beam, a silicon dioxide skirt beam, a left anchor point, a positive electrode metal bias line, a metal beam and a signal bridge.The switch integrates the upper electrode into the signal bridge to form a series capacitance switch structure, and the switch size can be reduced; the metal cantilever beam uses single-end DC power supply, the power supply structure is simple, the composite structure of the cantilever metal beam and the fixed support silicon dioxide beam is adopted, the switch warping caused by the cantilever beam is avoided, and the restoring force is provided; the switch has a large working bandwidth, a large switch isolation degree and a small insertion loss; the defect coplanar waveguide ground and the DC port isolation structure are designed, the switch can be prevented from exploding after breakdown or short circuit under high voltage, and radio frequency probes and other adjacent devices can be prevented from being damaged.

An incident power density determination device includes a human tissue phantom, configured to approximate dielectric properties of human tissue; one or more radiofrequency probes, positioned within the human tissue phantom, configured to generate measurements of radiofrequency emissions absorbed within the human tissue phantom; and a processor, configured to determine an incident power density at an outer surface of the human tissue phantom based on the generated measurements of the radiofrequency emissions.

The invention discloses a difference identification method and system for a chip-level RF calibration substrate. The method comprises the following steps: placing a calibrated standard substrate on an RF probe station; carrying out azimuth calibration on the standard substrate through the RF probe station, and positioning a reference point on the standard substrate; aligning and contacting a probe with a reference point of the standard substrate; calibrating the vector network analyzer VNA by using the standard substrate; after calibration is completed, S parameter testing is carried out on the calibration structure on the standard substrate; replacing the standard substrate on the RF probe station with a test substrate; keeping the calibration result unchanged, and performing S parameter test on the corresponding calibration structure on the test substrate; and comparing the test results of the standard substrate and the test substrate, identifying the difference, and judging whether the calibration structure of the test substrate has manufacturing deviation or process abnormality or not. According to the invention, high-precision, visual and automatic identification can be carried out on the difference of the chip-level RF calibration substrate after fine change of the size, and the consistency of repeated connection in the calibration and test process is ensured.

An integrated radio frequency (RF) ablation device that performs the functions of a stylet and an RF probe. In one embodiment, an RF ablation device includes an elongate shaft or tube having a distal resilient section, a proximal rigid section, and a handle at a proximal end attached to the proximal end of the elongate shaft or tube. The resilient section of the straight bar is configured to bend or flex but remain straight when unconstrained by external forces or caused to bend.

Radio frequency (RF) probes are shown and disclosed. In some embodiments, the RF probe includes a dielectric waveguide having opposed first and second longitudinal end portions and a planar conducting ground member being received in the first end portion of the dielectric waveguide. The conducting ground member includes an end portion with at least a first prong. The probe assembly additionally includes a conducting transition member received in the first end portion of the dielectric waveguide and spaced from the planar conducting ground member. The conducting transition member includes an end portion that includes a second prong spaced from the first prong.

Systems and methods for detecting probe position in radiofrequency (RF) ablation systems through leakage current detection. The systems include an RF generator having multiple connector ports with electrical pins that connect to RF probes, each probe having electrodes connected to corresponding pins. The system detects probe position by measuring leakage current between electrical pins, calculating impedance based on the detected current, and comparing measured values to predetermined ranges indicating probe location. The system applies different voltage levels to verify position through changes in measured impedance. Based on detected position, the system can automatically enable or prevent RF power delivery, enhancing procedural safety.

The invention relates to a radio frequency probe alignment and pressing amount control method based on visual feedback and motion control, and belongs to the technical field of semiconductor testing or module testing. The method comprises the steps that geometric parameters of a radio frequency probe and a target bonding pad are acquired through machine vision, the geometric parameters are mapped to a unified space coordinate system after being preprocessed, and a three-dimensional relative position relation is generated; driving a multi-axis displacement mechanism to perform visual servo alignment based on the relationship, and dynamically correcting motion parameters in real time; controlling the radio frequency probe to execute stepping type grading constant-speed pressing, comparing a continuously captured contact characteristic signal with a preset threshold value, and executing preset overpressure amount pressing after contact is judged; according to the deviation between the contact deformation signal and the standard value, the output torque is adjusted, and the radio frequency probe is driven to carry out micro-amplitude displacement correction. The high-precision and self-adaptive control of the positioning and pressing process of the radio frequency probe is realized, and the repeatability, the stability and the efficiency of the test are improved.

The invention provides a radio frequency probe regulation and control chip, a preparation method and a radio frequency probe regulation and control method, the radio frequency probe regulation and control chip comprises a wafer substrate and a GSG type coplanar waveguide CPW structure formed on the wafer substrate, the GSG type coplanar waveguide CPW structure comprises a CPW signal line and CPW ground wires located on the two sides of the CPW signal line, the CPW signal line and the CPW ground wires are arranged in parallel, and the GSG type coplanar waveguide CPW structure is formed on the wafer substrate. The two CPW ground wires are electrically communicated with the CPW signal wire and then are used for being in contact with three contacts of the radio frequency probe GSG to realize position calibration of the radio frequency probe GSG; according to the scattering parameters of the three contacts of the GSG relative to the CPW signal line and the two CPW ground lines, the contact state of the three contacts of the GSG and the radio frequency probe regulation and control chip is judged, and the included angle theta between the connecting line of the three contacts of the GSG and the plane where the radio frequency probe regulation and control chip is located is regulated and controlled. According to the invention, different contact states, including complete open circuit, complete short circuit, partial contact and the like, of the probe can be accurately identified, so that the inclination angle and the contact position of the probe can be automatically regulated and controlled.

The present invention relates to a system and method for adaptive multivariate control for performing a radiofrequency (RF) ablation procedure with a power delivery device. The system includes a power source for supplying energy to a patient's body; one or more power delivery devices; two or more sensors for measuring at least two factors related to an ablation procedure, respectively; and at least one processor.The method includes the steps of: measuring at least two factors related to an ablation procedure; determining a first operating threshold based, at least in part, on a first factor; controlling a power delivery device based on the first operating threshold to create a lesion at the target site within the patient; determining a second operating threshold based, at least in part, on a second factor; switching control of the power delivery device from the first factor to the second factor; and controlling the power delivery device based on the second operating threshold to create a lesion at the target site within the patient. The present invention also relates to an RF probe configured for use with the adaptive multivariate control system and method for performing RF ablation procedures.

Radio frequency (RF) probes are shown and disclosed. In some embodiments, the RF probe includes a dielectric waveguide having opposed first and second longitudinal end portions and a planar conducting ground member being received in the first end portion of the dielectric waveguide. The conducting ground member includes an end portion with at least a first prong. The probe assembly additionally includes a conducting transition member received in the first end portion of the dielectric waveguide and spaced from the planar conducting ground member. The conducting transition member includes an end portion that includes a second prong spaced from the first prong.