209 results about "Rf testing" patented technology

An integrated circuit (IC) is provided. The IC includes an RF transmitter and an RF receiver. The RF transmitter is configured to generate an RF signal in response to an analog test signal from a test signal generator of a module circuitry that is external to the IC. The RF receiver is configured to generate an outgoing signal according to an input RF signal, and to report the outgoing signal to the module circuitry. The module circuitry performs a test analysis on the RF signal generated by the RF transmitter or on the outgoing signal generated by the RF receiver to determine a test result. The test result is reported to a test equipment having no RF instruments.

The invention discloses a test method and a test system for the over-the-air (OTA) performance of a multi-aerial system and relates to the technical field of radio frequency test of a wireless communication product. The method comprises the following steps that: an OTA test environment is established for the multi-aerial system, wherein the established OTA test environment comprises a base station signal emulator, a multiple-input multiple-output (MIMO) channel emulator and a wave-absorbing darkroom, N test antennae are arranged in the wave-absorbing darkroom, and N is an integer of more than or equal to 2; the base station signal emulator is controlled to emulate and output transmitting signals of a plurality of base station antennae to the MIMO channel emulator, the MIMO channel emulator outputs G signals to the N test antennae, and the N test antennae sends a space signal to a device under test in the wave-absorbing darkroom; and the device under test receives the space signal and processes the space signal to realize an OTA test. By the test method and the test system provided by the technical scheme of the invention, the requirement of MIMO OTA is met effectively.

A signal measurement system tests an RF component in an RF test facility, such as an RF anechoic chamber. The system includes a repeater which is connected to an exterior antenna disposed outside the chamber and a transmitting antenna disposed inside the chamber. The repeater receives the RF broadcast signal from the exterior antenna and rebroadcasts it as an RF testing signal inside the chamber. The subject antenna receives the RF testing signal, which is then analyzed with a computer. The repeater may also modify the RF testing signal to produce a wide variety of test situations that mimic those available in a traditional field-test.

An on-chip receiver sensitivity test mechanism for use in an integrated RF transmitter wherein the transmitter and the receiver share the same oscillator. The mechanism obviates the need to use expensive RF signal generator test equipment with built-in modulation capability and instead permits the use of very low cost external RF test equipment. The invention utilizes circuitry already existing in the transceiver, namely the modulation circuitry and local oscillator, to perform sensitivity testing. The on-chip LO is used to generate the modulated test signal that otherwise would need to be provided by expensive external RF test equipment with modulation capability. The modulated LO signal is mixed with an externally generated unmodulated CW RF signal to generate a modulated signal at IF which is subsequently processed by the remainder of the receiver chain. The recovered data bits are compared using an on-chip BER meter or counter and a BER reading is generated. The BER reading is used either externally or by an on-chip processor or controller to establish a pass / fail indication for the chip.

The disclosed technology relates to systems and methods for emulating a massive MIMO beamforming antenna array of arbitrary size—a channel model between a transmitter and a receiver, with one or more signal paths having respective amplitudes, angles of arrival, angle spreads, and delays. The disclosed technology includes defining a complete channel model H, calculating the correlation matrix for the channel, grouping the base antenna elements of the antenna array by combinations of signal and polarization, and calculating observed beamforming power of each group of the base elements, by applying a cross-correlation matrix to determine observed power signals and delay of each signal at each remote antenna element of the user equipment. Emulation includes supplying cross-correlated signals to remote antenna elements of user equipment during a RF test of the user equipment. Disclosed technology includes a channel emulator that generates output streams for testing user equipment for multiple users.

An RF testing method and arrangement of an electronic device utilize sensors for measuring the electronic device under test in conjunction with production of the electronic devices. A comparator performs a comparison between measurement signals and corresponding reference signals from a reference supply and a decision unit determines defectiveness of the electronic device based on the comparison.

The invention relates to an index test method for WLAN equipment, which comprises the following steps: a radio frequency test loop is formed; a wireless link is established; a network test software is respectively installed on a server and a client side; the control terminal of the network test software is operated at the server and the client side, so as to configure the network test software; test data flow is generated between the response terminals of the software, and the test data flow is transmitted or received through the WLAN equipment; the WLAN equipment can obtain a radio frequencyindex from the radio frequency test equipment when in operation; and a network transmission index of the WLAN is obtained at the control terminal of a local network test software. The invention also relates to a system for realizing the method. The invention has the advantages that: the test method can test other network indexes simultaneously and is applicable for the WLAN equipments widely.

An integrated circuit (IC) is provided. The IC includes an RF transmitter configured to generate an RF signal in response to a command signal from test equipment; an RF receiver configured to generate an evaluation signal according to the RF signal, and report the evaluation signal to the test equipment, so that the test equipment performs a test analysis on the evaluation signal to determine a test result, wherein the test equipment is external to the IC.

A two-port dual-gate field-effect transistor for amplifier applications, wherein a self-bias circuit comprising a number of passive elements, such as resistors, diodes and capacitors, is utilized to coupled the output of the amplifier with a second gate of the dual-gate device as a bias source, which transforms the conventional three-port cascode topology into a two-port dual-gate device so as to facilitate device testing, modeling, and packaging for discrete device application. The technology is for improving the RF performance of conventional two-port single-gate HEMT device, with slightly noise figure degradation. This innovation doesn't require complicated RF testing and modeling as compared with conventional dual-gate devices. The two-port dual-gate device fits packaging molds of conventional two-port discrete device, hence the production line thereof can be easily extended to low noise amplifier and power amplifier applications.

A system employing vector signal generator (VSG) and vector signal analyzer (VSA) modules or cards that are configured to test multiple devices under test simultaneously. Each VSG is configured to generate multiple RF test signals and send them to multiple devices under test simultaneously. Similarly, each VSA is configured with multiple signal receiving modules connected to a single controller or memory. Each signal receiving module receives an RF signal from a device under test, converts it to a baseband digital signal, and transmits this digital signal to the VSA's memory. A single RF testing system can employ multiple such VSGs and VSAs, each capable of evaluating multiple devices under test. Each VSG / VSA can further be tuned for operation in discrete or defined frequency bands, which are narrower than those for conventional RF testers, and which can correspond to various wireless standards.

The invention relates to a method for automatically calculating compensation for a mobile-phone radio frequency testing system. The method comprises the following steps that S100, a mobile phone is made into a calibration machine by using a calibration tool, and true power of the mobile phone is written into the calibration machine; S200, the true power of the calibration machine is read by using the calibration tool, and testing power of the calibration machine in the mobile-phone radio frequency testing system is measured by using a general-purpose tester; S300, compensation for the mobile-phone radio frequency testing system is calculated, and compensation for the mobile-phone radio frequency testing system is equal to the value obtained by subtracting the true power of the calibration machine from the measured testing power of the calibration machine in the mobile-phone radio frequency testing system. By means of the method for automatically calculating compensation for the mobile-phone radio frequency testing system, the situation that calibration results of the mobile phone are affected because the mobile-phone radio frequency testing system produces power loss due to circuits, clamps, connectors on the instrument side, antenna matching and other factors can be avoided, and more precise radio frequency calibration of the mobile phone is achieved.

An integrated circuit (IC) is provided. The IC includes: an RF transmitter configured to generate an RF signal when the IC has entered a test mode; an RF receiver configured to receive the RF signal in the test mode; and a computation unit having a plurality of processing units that are parallelized to perform a test procedure of the IC according to the received RF signal to determine one or more test results.

A radio frequency testing system and its method of performing a radio frequency test on a plurality of mobile communication devices are provided. The system simultaneously connects mobile communication devices for performing a pre-set procedure and an RF test in sequence. The system has an RF testing device for RF-testing the mobile communication devices in turn, a switch device for regulating an electrical connection between the RF testing device and any mobile communication device, and a controlling device for performing the pre-set procedure on some of the rest mobile communication devices before the one is finished performing the RF test.

The invention provides a communication equipment test device, a cloud server and a communication equipment test method. The test device comprises: the cloud server is used for calling a preset programcorresponding to a first target test item according to a test instruction of the first target test item, and generating a first test signal, or receiving the cloud digital signal, and calling a preset program corresponding to the second target test item to process the cloud digital signal according to the cloud digital signal to obtain a test result; an electrical instrument which is used for receiving the first test signal, converting the first test signal into a first radio frequency test signal and sending the first radio frequency test signal to the equipment to be tested, or receiving asecond radio frequency test signal of a second target test item sent by the to-be-tested device, and converting the second radio frequency test signal into a cloud digital signal. According to the technical scheme, the testing cost of the communication equipment is reduced, and the testing efficiency and flexibility of the communication equipment are improved.

The invention relates to a radio frequency test method and device, an electronic device and a storage medium, which are used for carrying out radio frequency test on equipment supporting an LPWAN technology, and the method comprises the following steps: receiving a calibration radio frequency signal emitted by the equipment, the calibration radio frequency signal being a radio frequency signal emitted by the equipment according to a received radio frequency calibration instruction; calculating the radio frequency power value of the received calibration radio frequency signal, and determining acalibration result by using the radio frequency power value; if the calibration result shows that the calibration is unqualified, sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct the configuration information and resend the calibration radio frequency signal for secondary calibration until the calibration result is qualified;and if the calibration result is qualified, performing radio frequency transmitting and receiving tests on the equipment. According to the method, the radio frequency power value transmitted by the equipment is calibrated before the radio frequency test is carried out on the equipment, so that the problem that the output power deviation of the LPWAN equipment produced in the same batch is relatively large is avoided.

The invention provides a board-level radio frequency signal testing system, method and device without a radio frequency testing base, which are used for testing radio frequency signals of a radio frequency circuit. The board-level radio frequency signal testing system device comprises a radio frequency test probe, a tuning module and a test instrument module, one end of the radio frequency test probe is connected with an antenna elastic sheet of a radio frequency circuit, and the other end is connected with the tuning module; the tuning module is connected with the test instrument module; thetuning module adjusts the matching impedance according to the return loss; the matching impedance is matched with the impedance of the radio frequency circuit; the radio frequency test probe is directly and electrically connected with the antenna elastic sheet in the radio frequency circuit; then, the tuning module is used for adjusting the matching impedance, and whether the matching impedance ismatched in place or not can be judged according to the return loss until the matching impedance is matched with the impedance in the radio frequency circuit, so that the purpose of directly testing aradio frequency signal through the antenna elastic sheet is achieved; the test result is rigorous and the structure is ingenious; and the design space and the production cost of a radio frequency test base in a radio frequency circuit are saved.

A test station may include a test host, a test unit, and a test enclosure. A device under test (DUT) having at least first and second antennas may be placed in the test enclosure during production testing. Radio- frequency test signals may be conveyed from the test unit to the DUT using a test antenna in the test enclosure. In a first time period during which the performance of the first antenna is being tested, the DUT may be oriented in a first position such that path loss between the first antenna and the test antenna is minimized. In a second time period during which the performance of the second antenna is being tested, the DUT may be oriented in a second position such that path loss between the second antenna and the test antenna is minimized. The DUT is marked as a passing DUT if gathered test data is satisfactory.

The invention discloses a line loss calibration method, device and system and a computer readable storage medium. The line loss calibration method comprises the steps of: when it is detected that theradio frequency test system is in a first connection state, controlling a first port of the wireless communication tester to transmit a first signal with first preset power, and obtaining first receiving power of the first signal received by the power meter; when detecting that the radio frequency test system is in a second connection state, controlling the first port of the wireless communicationtester to transmit a second signal with a second preset power, and obtaining a second receiving power of the second signal received by the second port of the wireless communication tester; and calculating to obtain a line loss compensation value according to the first preset power, the first receiving power, the second preset power and the second receiving power, and calibrating the radio frequency test system based on the line loss compensation value. According to the invention, the automatic test of the line loss compensation value and the automatic calibration of the radio frequency test system can be realized, and the calibration efficiency and the accuracy of the calibration result can be improved.

The invention provides a radio frequency conduction test method and a related device. The method comprises the steps that a radio frequency test pin is moved to a first bonding pad of a single board,so that a test signal on the first bonding pad is transmitted to the radio frequency test pin and then transmitted to a radio frequency test instrument for a radio frequency conduction test, and the test signal in the radio frequency test pin is transmitted to the radio frequency test instrument through an impedance conversion device and a directional coupler; a straight-through output port of thedirectional coupler is connected with a first measurement port of the radio frequency test instrument, and a coupling output port of the directional coupler is connected with a second measurement port of the radio frequency test instrument; and after the radio frequency conduction test is finished, the radio frequency test needle is moved away, and the series device to be welded is repaired and welded on the first bonding pad and the second bonding pad of the single board, so that the radio frequency front-end circuit and the radio frequency rear-end circuit on the single board are smoothly connected. According to the method, more devices do not need to be added for testing, the layout area of the single board is saved, and the device cost is reduced.

The invention discloses a verification test method and device for an ultrahigh-frequency RFID tag. The method comprises a tag chip radio frequency test step, and comprises the following steps: S1, configuring an adjustable attenuator and a reader, and respectively connecting two ends of the adjustable attenuator with a to-be-tested tag chip and the reader through coaxial transmission lines to construct a radio frequency test device; Ss2, adjusting the attenuation value of the adjustable attenuator and the output power of the reader to enable the to-be-measured label chip to work at the lowestpower, measuring the reflection coefficient of the to-be-measured label chip at the lowest power, and calculating the sensitivity value of the to-be-measured label chip according to the lowest power and the reflection coefficient; and adjusting the distance between the to-be-measured label chip and the reader to adjust the incident power of the to-be-measured label chip, and when the incident power reaches the calculated sensitivity value, measuring the input impedance of the current to-be-measured label chip. The method has and the device have the advantages of being simple in operation method, low in implementation cost, high in verification test efficiency and precision and the like.

The invention relates to the field of radio frequency circuits, and discloses a BGA port radio frequency transmission performance detection device and detection method. The BGA port radio frequency transmission performance detection device comprises a radio frequency connector, a radio frequency substrate for transition, and BGA balls. The radio frequency connector is provided with an interface used for being connected with a radio frequency tester, the radio frequency connector is connected with one surface of the radio frequency substrate, the BGA balls are arranged on the other surface of the radio frequency substrate, and the array arrangement form of the BGA balls corresponds to a radio frequency port array of a BGA bonding pad of the composite substrate; and the BGA balls are connected with the corresponding radio frequency ports on the composite substrate through the radio frequency elastic interconnection structures to realize radio frequency interconnection. According to the device and method, the radio frequency transmission performance of the bare board of the composite substrate provided with the BGA packaging radio frequency product is detected in advance, and the radio frequency performance screening work of the bare board before assembly is completed; and the frequency test range is expanded to more than four times of that in the prior art. By integrating with aproper automatic machine, automatic positioning, testing and screening functions can be realized, and the detection and screening efficiency is greatly improved.

The invention relates to a radio frequency switching box and a system for testing the radio frequency consistency of terminals. The radio frequency switching box comprises a first radio frequency testing link which is used for enabling a system simulator to be connected with a to-be-detected terminal; a second radio frequency testing link which is used for enabling a microwave signal source to be connected with the to-be-detected terminal; a third radio frequency testing link which is used for enabling a vector signal source to be connected with the to-be-detected terminal; a fourth radio frequency testing link which is used for enabling a frequency spectrum analyzer to be connected with the to-be-detected terminal; and an interface unit which is used for providing a connection interface for the connection of the radio frequency switching box with the system simulator, the microwave signal source, the vector signal source, the frequency spectrum analyzer and the to-be-detected terminal. The switching box can automatically switch the radio frequency testing links in a testing process of radio frequency consistency, completes various types of testing items of technical standards relative to the standard requirements for consistency testing of an LTE terminal, saves the investment cost of testing, improves the testing efficiency, simplifies the testing operation, and reduces the requirements for the professional skill of a tester.

The invention discloses a PCBA calibration clamp and a calibration method thereof. The PCBA calibration clamp comprises a clamp frame, a radio frequency head adjusting plate, a PCBA size adjusting plate, a comprehensive testing device, a radio frequency head, a radio frequency wire and a PCBA radio frequency testing interface. The clamp frame is a frame seat of a clamp and is used for loading thePCBA size adjusting plate and the radio frequency head adjusting plate; the radio frequency head adjusting plate is used for adjusting the radio frequency head to correspond to a radio frequency testing seat of PCBA; the PCBA size adjusting plate is used for adjusting the size of PCBA and fixing PCBA; the comprehensive testing device is used for testing a radio frequency index of a mobile phone PCBA, and is connected with the radio frequency head through the radio frequency wire; and the PCBA radio frequency testing interface is connected with the mobile phone PCBA. The invention can effectively and rapidly carry out a calibration test on the mobile phone PCBA in the production of the mobile phone, thereby reducing the production cost and improving the production efficiency for manufacturers.

The embodiment of the invention discloses a radio frequency circuit testing device and a testing method thereof. The device comprises a short circuit bonding pad combination, a radio frequency circuitmodule, an antenna module and a test circuit module, wherein the short circuit bonding pad combination comprises a plurality of mutually independent feed points; the radio frequency circuit module, the antenna module and the test circuit module are separately connected with the feed points; and the feed points can be connected and conducted in a soldering tin mode. In this way, when a test is needed, according to the circuit modules required to be connected , the connection and conduction of the feed points connected with the related circuit modules are realized through soldering tin, so thatthe connection and conduction between the related circuit modules are realized, thus, the test is realized, a radio frequency test seat is eliminated, and the problems of insertion loss and materialcost increase of the radio frequency test seat are avoided.

The invention discloses a radio frequency testing device and a radio frequency testing method, and relates to the technical field of radio frequency testing equipment. The testing device comprises a testing mechanism; the testing mechanism comprises a pricking pin testing module; an upper air channel groove extending transversely is formed in the position, corresponding to a chip of a product, ofa radio frequency pin base of the pricking pin testing module, and a lower air channel groove with the extending direction consistent with the extending direction of the upper air channel groove is formed in a positioning plate located below the product; one side of the upper air channel groove and one side of the lower air channel groove are provided with a fan blowing air in the extending direction of the upper air channel groove and the lower air channel groove. A guide groove is vertically formed in the position, corresponding to the chip, of the upper air channel groove; a heat dissipation copper block making contact with the chip is arranged in the guide groove in an elastic floating mode, and a first heat dissipation groove is formed in the end, making contact with the chip, of theheat dissipation copper block. The radio frequency testing device solves the problem about how to dissipate heat and reduce temperature of a chip in the radio frequency testing process, can complete the radio frequency testing of a product at one time, guarantees the accuracy of a radio frequency testing result, and reduces the testing cost.

A radio frequency (RF) testing system (100) includes a RF signal source (10) generating RF signals, an antenna (50), a RF testing circuit (40) disposed on a printed circuit board (PCB) (41), a testing probe (20) for receiving the RF signal from the RF testing circuit, and a testing apparatus (30) for testing the RF signals from the testing probe. The RF testing circuit includes a first pad (42), a second pad (44), a transmission line (48), and at least one ground portion (49) parallel to the transmission line. A distance between a first region defined by the first pad and a second region defined by the second pad positioned between the first region and the antenna is equal to one-fourth of the wavelength. During testing, the testing probe is electrically connected to the first pad, and the second pad is electrically connected to ground of the PCB.