KR101487979B1 - Apparatus for Preventing DUT Burn Out in Performance Verification Test of Amplifier and Method Thereof - Google Patents

Abstract

The present invention relates to an apparatus for preventing DUT burn-out in a performance verification test of an amplifier and a method thereof and, more specifically, to an apparatus for preventing burn-out occurred in case an excessive input signal is inputted to an amplifier in a radar and communication equipment high output amplifier measurement field apparatus. The apparatus for preventing burn-out in a performance verification test of an amplifier includes: a signal generator for generating an RF signal by receiving a trigger signal; a driving amplifier for amplifying the RF signal generated in the signal generator; a test target amplifier for generating an output signal of a fixed gain by receiving the RF signal amplified from the driving amplifier; a peak power meter which measures gain of the amplifier by receiving a signal inputted to the test target amplifier and a signal outputted from the test target amplifier and then transmits the gain to a test control equipment; and the test control equipment which stops the performance test if the input signal of the test target amplifier exceeds a pre-established limit range on the basis of the measured value received from the peak power meter.

Description

[0001] The present invention relates to an apparatus for preventing burn-out in an amplifier performance test,

The present invention relates to an apparatus and method for preventing burn-out in an amplifier performance test, and more particularly, to a burn-out preventing apparatus and a method thereof in radar, communication equipment, high-power amplifier measurement field apparatus, and to a method for preventing such burn-out.

Test equipment used in the performance tests of modern radar amplifiers may cause burn-out due to excessive input signal during performance test to test its performance. In particular, It is required to be always controlled to a constant phase irrespective of time variation and temperature variation.

Meanwhile, the prior art process is performed by applying an input signal without measuring the input level and measuring the output signal.

In other words, in the past, there is no function to detect the input level, so that if an excessive input signal is input to the amplifier, it is difficult to immediately take a measure to burn out.

In addition, the device does not have a correction device for controlling the phase, and there is no function of shutting down the burn-out condition database in advance when the burn-out condition comes into the database.

Therefore, it is possible to safely protect the amplifier from an excessive input signal in the performance test of the amplifier, to perform the performance test with a constant phase at all times regardless of the time change and the temperature change, and to allow the user to know the phase value of the amplifier A performance test system is required to inform the user.

SUMMARY OF THE INVENTION The present invention has been made to overcome the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for detecting an input signal for an amplifier performance test so that an excessive input signal is not applied to the amplifier, Provide test equipment and method that can perform performance test in phase.

In other words, in order to prevent a problem that an excessive amplifier is burnt out during performance test when an excessive input signal flows into the amplifier due to lack of input level sensing function in the prior art, an excessive input signal (power supply, RF signal) It provides the function to eliminate the amplifier burn-out phenomenon that occurs during the performance test by cutting off the power at the time of input.

In addition, it has a function of automatically correcting the phase value of the amplifier, which requires adjustment of the phase value of the output signal, and provides a function that allows the user to tune the phase value in consideration of the phase of the amplifier.

Finally, the malfunction type of the test equipment measured in the actual operating environment is stored, and the measured data is stored in a database. If the test is performed under the same or similar condition as the fault occurrence type, the warning message or the blocking function can be set. It provides functions that can prevent various errors during performance test.

According to an aspect of the present invention, there is provided a burn-out preventing device in an amplifier performance test, comprising: a signal generator receiving a trigger signal and generating an RF signal; A driving amplifier for amplifying an RF signal generated by the signal generator; A test subject amplifier receiving an RF signal amplified from the driving amplifier and generating an output signal with a predetermined gain; A peak power meter for receiving a signal input to the test object amplifier and an output signal, measuring the gain of the amplifier, and transmitting the measured gain to the test control equipment; And a test control device for stopping the performance test if the input signal of the test object amplifier exceeds a predetermined limit range based on the measurement value received from the peak power meter.

Wherein the test control device performs a function of interrupting the performance test by shutting off the power supplied to the test object amplifier and automatically turning off the output signal of the test object amplifier when the input signal of the test object amplifier exceeds the limit range, And a function of changing the measurement to the next frequency when the output signal of the amplifier under test satisfies a predetermined target value.

The driving amplifier amplifies the RF signal output from the signal generator to a signal of a level higher than a level required for the performance test and receives power and control signals from the test control device and uses an internal variable gain adjusting amplifier It is desirable to adjust the gain or to control the phase of the output signal using an internal phase shifter.

A directional coupler receiving the RF signal and outputting an attenuated signal and a lossless and lossless signal, respectively; And a detector for envelope-detecting the RF signal and outputting a pulse signal, wherein the driving amplifier senses an RF signal output from the directional coupler using the detector, It is preferable to supply the signal to the variable gain amplifier in the amplifier so that the output level is kept constant with respect to the target value.

And a pulse network analyzer for calculating an adjustment value for phase adjustment of the test object amplifier using the phase value measured from the RF signal and notifying the user of the adjusted value.

The test control equipment performs a GPIB (General Purpose Interface Bus) interworking with the signal generator, the peak power meter, and the pulse network analyzer to measure the output of the RF signal, the measured output value of the test subject amplifier, It is preferable to receive the measured gain and phase value in real time.

The test control device has a function of recording a self-measurement time and controlling the self-measurement time so as not to exceed a predetermined recommended measurement time, and when the self-measurement time exceeds the recommended measurement time, it displays a warning message to the user .

And a temperature sensor for sensing a temperature of the test subject amplifier. The test control device senses a temperature of the test subject amplifier input from the temperature sensor, and when the temperature exceeds a predetermined range of the normal temperature, It is desirable to stop the performance test by shutting off the power supplied to the amplifier and automatically turning off the output signal of the signal generator.

The test control device stores all the input and output data in a database and stores the data in which the burn-out has occurred, and then performs a warning message or a blocking function when performing a similar operation in the performance test, It is desirable to prevent the amplifier from being lost.

According to another aspect of the present invention, there is provided a method of preventing burn-out in an amplifier performance test, the method comprising: generating a RF signal by receiving a trigger signal; A driving amplifying step of amplifying the RF signal generated in the signal generating step; A DUT testing step of receiving the amplified RF signal and generating an output signal at a predetermined gain; A peak power step of receiving an input signal and an output signal in the DUT test step and measuring and transmitting an amplification gain; And a test control step of stopping the performance test if the input signal of the DUT test step exceeds a predetermined limit range based on the measurement value received from the peak power step.

According to the burn-out preventing device and the method of the amplifier performance test according to the present invention, the burn-out phenomenon can be solved by shutting off the power when an excessive input signal (power source, RF signal) The absence of input level sensing during performance testing eliminates the problem that expensive amplifiers are lost during performance testing when excessive input signals are introduced into the amplifier.

In addition, since the measured data is stored in the database and the warning message or the blocking function can be set when the test is performed in a condition similar to the existing error occurrence type, it is possible to prevent the error during the repeated performance test It is effective.

Further, it is possible to automatically correct the phase value of the amplifier, which requires adjustment of the phase value of the output signal, and to provide a function of allowing the user to tune the phase value in consideration of the phase of the amplifier.

FIG. 1 is a functional block diagram illustrating a performance testing system of a DUT with an amplifier burn-out prevention apparatus according to an embodiment of the present invention. Referring to FIG.
2 is a flowchart illustrating a method of preventing burn-out in an amplifier performance test according to an embodiment of the present invention.
Figure 3 is a detailed functional block diagram of the test control equipment 17 of Figure 1, in accordance with one embodiment of the present invention.
4 is a circuit diagram of a performance testing system of the DUT of FIG. 1, in accordance with an embodiment of the present invention.
5 is an exemplary diagram for setting a peak power meter, a signal generator, a network analyzer, and other time values according to an embodiment of the present invention.
6 is an exemplary diagram for measuring a reference value (golden cable) for phase correction according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and the same / similar parts are denoted by the same / similar reference numerals throughout the specification.

Throughout this specification, when an element is referred to as "including" an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

In addition, in adding reference numerals to the constituent elements of the drawings, it is to be noted that the same constituent elements are denoted by the same reference numerals even though they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."

The present invention relates to a method for improving a burn-out phenomenon when an excessive input signal is applied during performance testing of an amplifier, and is characterized in that an excessive input signal is not applied to an amplifier Out preventing device and method capable of always performing a performance test with a constant phase irrespective of a time change and a temperature change.

Also, the test equipment of the present invention stores a malfunction type of the test equipment measured in an actual operating environment, stores it in a database, and has a function of warning or blocking before burn-out when the same malfunction occurs.

Hereinafter, a burn-out preventing apparatus and method thereof in the amplifier performance test of the present invention will be described in more detail with reference to several figures.

FIG. 1 is a functional block diagram illustrating a performance testing system of a test object amplifier (DUT) having an amplifier burn-out prevention device according to an embodiment of the present invention. FIG. 4 is a functional block diagram of a DUT, Fig. 2 is a schematic diagram showing a circuit diagram of a performance test system of Fig.

First, a schematic system functional block diagram to which the apparatus of the present invention is applied is shown in FIG. 1, and its main features will be described below.

The signal measured by the detector 1 (12) with respect to the input signal of the amplifier 5 to be tested senses the signal level inputted to the test object amplifier 5 and is inputted to the input side signal generator 1 The power of the power source is cut off.

On the other hand, the detector 3 (9) senses the output signal at the dc level and applies it to the drive amplifier 2, and the drive amplifier 2 supplies the applied voltage to the internal variable gain amplifier to adjust the gain I have.

The peak power meter 11 receives the signal input to the test object amplifier 5 from the sensor 1 12 and receives the output signal from the sensor 2 10 and measures the gain of the amplifier to perform test control And the test control device 17 performs blocking function when the input signal exceeds the limit range and changes the measurement to the next frequency when the output signal satisfies the desired target value.

In this case, all the data is stored in a database and stored. After the stored data is burned out, if a similar operation is performed during the performance test in the future, a warning message or a blocking function is performed, .

Then, the phase adjustment value of the input phase adjustment PCB for the amplifier phase adjustment is automatically calculated using the phase value measured by the network analyzer 16, and the function is informed to the user. In this case, before the amplifier to be tested in the performance test, the golden cable is measured every time, and the phase characteristic is changed every day. 6 is an exemplary view for measuring a reference value (golden cable) for phase correction according to an embodiment of the present invention.

Hereinafter, the detailed roles of the individual components shown in FIG. 1 will be described one by one. At this time, it will be easier to understand by comparison with FIG. 4 which is a circuit diagram actually implemented as an example.

The present invention comprises a test control device 17 for testing an amplifier 5 to be tested, a signal generator 1, a drive amplifier 2, detectors 1-3 (12,10,9), attenuators 1-3 , A directional coupler 1 to 4 (3,4,7,8), a DUT (Device Under Test) 5, a peak power meter 11 and a pulse network analyzer 16 .

First, the signal generator 1 receives a trigger signal (i.e., a pulse synchronization signal) input from the test control device and generates an RF pulse signal (0 dBm) in the L-band (0.8 to 2.0 GHz) do.

The driving amplifier 2 amplifies the RF signal of the L-band outputted from the signal generator 1 to a signal of a predetermined level or more necessary for the performance test. The driving amplifier 2 amplifies the 43 dBm output signal .

In this case, the driving amplifier 2 receives the power and control signals from the test control equipment 17 and adjusts the gain using a variable gain adjusting amplifier. The gain of the driving amplifier 2 is adjusted by using a phase shifter, The phase can also be controlled.

Further, after detecting the signal output from the directional coupler 4 (8) by using the detector 3 (9), this signal is supplied to the variable gain amplifier in the drive amplifier 2 to keep the output level constant So as to control the operation of the apparatus. At this time, the RF detector can be used as the detector.

The directional coupler 1 (3) receives the 43 dBm RF output signal from the drive amplifier 2 and supplies it to the attenuator 1 (15) as a 20 dB attenuated signal, and the lossless signal (lossless signal) As shown in FIG.

Attenuator 1 (15) attenuates the 23dBm signal by 35dB and feeds it to Port1 of the pulse network analyzer as an input signal (ie, -12dBm).

The directional coupler 2 (4) receives the RF output signal of 42.8 dBm output from the directional coupler 1 (3) and supplies the 20 dB attenuated signal to the attenuator 2 (14). The lossless signal (lossless signal) (DUT, 5).

The attenuator 2 14 attenuates the 22.8 dBm signal by 23 dB and supplies the input signal (i.e., -0.2 dBm) to the detector 1 12 in the CH 1 of the peak power meter 11

The test subject amplifier 5 receives the 42.8 dBm RF signal output from the directional coupler 2 (4) as a DUT, and produces an output signal of 52.5 dBm or more. (Gain 9.7 dB)

Such a technical example is only one embodiment, and the level definition may be changed according to the amplifier to be measured based on the above-mentioned description.

Since the output signal of the RF signal outputted from the amplifier 5 to be tested is excessively high at 52.5 dBm, the attenuator (40 dB) 6 attenuates it by 40 dB and outputs 12.5 dBm.

The directional coupler 3 7 receives the RF output signal of 12.5 dBm output from the attenuator 40dB 6 and supplies a 20 dB attenuated signal (i.e., -7.5 dBm) to the attenuator 3 13, (Lossless signal) to the directional coupler 4 (8).

The attenuator 3 (13) attenuates the signal of -7.5 dBm by 10 dB and supplies the input signal (i.e., -17.5 dBm) to the network analyzer 16 PORT2.

The directional coupler 4 8 receives the RF output signal of 12.5 dBm output from the directional coupler 3 7 and supplies a 20 dB attenuated signal (i.e., -7.5 dBm) to the detector 3 9, Lossless signal) to the detector 2 (10).

The detector 2 10 receives a signal of 12.5 dBm from the directional coupler 4 8 and envelopes the RF signal and supplies the pulse signal to the peak power meter 11 CH2.

The detector 3 (9) receives the signal of -7.5 dBm from the directional coupler 4 (8), and performs a role of detecting the envelope of the RF signal and supplying the pulse signal output to the driving amplifier 2.

On the other hand, this signal is applied to the BIAS stage of the variable gain amplifier in the driving amplifier 2 to control the gain of the driving amplifier 2.

The test control equipment 17 produces the sync pulses required for the signal generator 1 and the pulse network analyzer 16 to produce the necessary power and control signals for the drive amplifier 2 and also for the DUT 5 receives the BIT signal output from the DUT 5 and receives the power level applied to the DUT 5 and inputs the BIT signal output from the drive amplifier 2 And receives a power supply level applied to the driving amplifier 2.

The test control device 17 also performs the GPIB (General Purpose Interface Bus) interworking with the signal generator 1, the peak power meter 11 and the pulse network analyzer 16 to generate RF signal transmission information, And the gain and phase values measured by the pulse network analyzer 16 are input in real time.

In addition, the test control device 17 has a function of recording its own measurement time so as not to exceed the recommended measurement time, and when the time exceeds the predetermined time, a warning message is displayed to the UI device (e.g., notebook) Function.

The test control device 17 has a function of automatically detecting the input of the measurement and performing the measurement and displaying the UI device screen.

The temperature sensor 18 is provided at a position where it is assembled to the amplifier 5 to be tested and serves to sense the temperature of the amplifier 5 at the time of measurement.

2 is a flowchart illustrating a method of preventing burn-out in an amplifier performance test according to an embodiment of the present invention.

Referring to FIG. 2, a method of preventing burn-out in an amplifier performance test includes a signal generating step S21 for receiving a trigger signal and generating an RF signal, a driving amplifying step for amplifying an RF signal generated in the signal generating step, A DUT test step S23 for receiving an amplified RF signal and generating an output signal at a predetermined gain and an input signal and an output signal at a DUT test step are received and amplification gain is measured And a test control step (S25) for stopping the performance test if the input signal of the DUT test step exceeds a predetermined limit range based on the peak power level (S24) for sending out and the measurement value received from the peak power level.

By setting actual example data, the process (FIG. 2) in which the present invention operates will be described below with reference to FIG.

First, the DUT 5 to be measured is connected as shown in FIG. 1, and the signal generator 1 and the test control equipment 17 are set to the values to be measured.

As an exemplary setting, if the target output is greater than 52.5 dBm and the output of the drive amplifier 2 is 43 dBm, then the input conditions that the test subject amplifier 5 can withstand can be presented as follows:

(2) The input voltage is 28V +/- 5V. (3) The measurement temperature is not more than 60degrees. (1) The RF input condition is 46dBm or more.

As shown in FIG. 5, the various set values can be obtained by setting a peak power meter, a signal generator, a network analyzer, and other time values through a UI screen.

If the signal outputted from the signal generator 1 is amplified through the driving amplifier 2, the signal is transmitted from the directional coupler 1 (3) to the directional coupler 2 (4) And the remaining signals are applied to the attenuator 2 (14).

The signal applied to the attenuator 2 (14) is input to the CH2 of the peak power meter (11), and it detects whether the input signal is an appropriate level signal and cuts off the power supplied to the DUT (5) 1) can be automatically turned off to stop the test. In addition, an alert window for the input signal overflow is displayed on the user screen of the UI device of the test control device to inform the user.

In other cases, if the applied signal is below the conditional level, the test is normally performed, and if it is detected that the temperature range connected to the DUT 5 is over the over-temperature, the temperature exceeds the appropriate setting range The same test is stopped as above and an alert window is displayed on the screen of the user UI device.

As another example, if the measurement time exceeds the test time set by the user, the test is stopped as above, and an alert window is displayed on the screen of the UI device.

On the other hand, if the normal input signal is applied to the detector 1 (12), the test will operate normally, and if the normal signal is measured at the temperature sensor, the test will also operate normally. And, if it is within the appropriate range of test time, the test will operate normally.

When the test time measured by the detector 1 12, the temperature sensor 18 and the test control equipment 17 is normal operating conditions, a 43 dBm signal output from the directional coupler 2 (4) is output to the DUT 5 And amplified to a constant level, and an output signal of 52.5 dBm is output.

This signal is attenuated by the attenuator 6 by 40 dB for outputting an output of 12.5 dBm and the port which is transmitted in a lossless manner in the directional coupler 3 (7) and the directional coupler 4 (8) So that the pulse signal through the envelope detection of the output signal is transmitted to the input of the variable gain amplifier in the driving amplifier 2 and the gain of the driving amplifier 2 is controlled at a constant level, Be controlled

The RF output signal attenuated by 20 dB in the directional coupler 3 (7) passes through the attenuator 3 (13) again to attenuate it to an appropriate output level measurable by the pulse network analyzer 16, PORT2.

On the other hand, the RF output signal attenuated by 20 dB in the directional coupler 4 (8) is input to the detector 2 (10) and measured by a signal input to and outputted from the peak power meter 11 (CH2) And CH2 output signals take into account the path loss and then transfer the measurement results to the test control equipment.

The phase difference value and the gain signal measurement value of the output signal of PORT2 compared to the input signal of PORT1 measured by the pulse network analyzer 16 are transmitted to the test control equipment by the GPIB control cable.

And the analog temperature information measured at the temperature sensor 18 is transmitted to the input side of the test control equipment 17. [

The test control device 17 detects the input signal CH1 and the output signal CH2 at the peak power meter 11 and cuts off the DC power supply signal supplied to the DUT 5 when a signal above the normal level flows into the CH1, The output of the generator 1 is turned OFF to perform protection of the DUT 5.

Here, the normal level can be controlled by the user using the UI device of the test control equipment.

The test control unit 17 senses the temperature of the DUT 5 input from the temperature sensor 18 and outputs a DC power signal to the DUT 5, And turns off the output of the signal generator 1 to perform the protection operation of the DUT 5. [

In addition, when the test control device 17 detects the measurement start time and performs an amplification operation in which an RF signal of a predetermined time or more set by the user is inputted, a warning message is generated in the UI device of the test control device, , DC OFF, RF OFF).

The test control device 17 also receives data input to the peak power meter 11 CH1 and CH2, data measured at the pulse analyzer 16, data measured at the sensor 3 (9) And accumulates data inputted to the drive amplifier 2 into a database and generates a warning message on the user's test control equipment UI device screen when data of a type similar to that at the time of occurrence of a fault is repeatedly generated, The user can also perform the function to stop the test manually or automatically.

Figure 3 is a detailed functional block diagram of the test control equipment 17 of Figure 1, in accordance with one embodiment of the present invention.

3, the test control equipment 17 includes a GPIB input unit 31, a control signal generating unit 32, a comparison unit 33, a data storage unit 34, a processing unit 38, an input unit 35, An output unit 36, a control unit 39, and a UI device 37. [

The test control device 17 can input a 0 to 5V signal to the drive amplifier 2 in units of 0.01 V, and two kinds of signals are applied to the drive amplifier 2.

 The input Vod voltage (0 to 5 V) may be input to the BIAS stage of the variable gain amplifier in the driving amplifier 2 to control the gain of the driving amplifier 2. On the other hand, the magnitude of the spike can be controlled by the voltage of the pre-Vod (0 to 5 V) for the control of the spike waveform of the pulse waveform to be further input.

The GPIB input unit 31 serves as a GPIB signal interface and the control signal generating unit 32 generates a control signal required for the driving amplifier 2 and a control signal required for the DUT 5. [

The comparator compares the measured data of the peak power meter 11 and the target value set by the user, and the data storage unit 34 stores the measured data in a database.

The control unit 39 controls all the control of the test control equipment 17. The control unit 39 controls the operation of the test control equipment 17,

The input unit 35 receives and transmits an input signal inputted from the outside, and the output unit 36 generates various control signals of the test control equipment 17.

A UI device (e.g., a notebook computer) receives a command from the user and transmits the command to the input unit and the output unit of the test control device 17 via the LAN. The UI device receives a command from the test control device 17 and transmits the command to the UI device. And stores and outputs the result of the data. And receives the appropriate level requested by the user and transmits the condition to the test control equipment 17

The use of the burn-out preventing device and method in the amplifier performance test according to the present invention can solve the burn-out phenomenon by turning off the power when an excessive input signal is inputted, The problem that the expensive amplifier is lost during the performance test can be solved.

In addition, since the measured data is stored in the database and the warning message or the blocking function can be set when the test is performed in a condition similar to the existing error occurrence type, it is possible to prevent the error during the repeated performance test It is effective.

Also, it is possible to automatically correct the phase value of the amplifier, which requires adjustment of the phase value of the output signal, and to provide the function that allows the user to tune the phase value in consideration of the phase of the amplifier.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. The codes and code segments constituting the computer program may be easily deduced by those skilled in the art. Such a computer program may be stored in a computer-readable storage medium, readable and executed by a computer, thereby implementing embodiments of the present invention. As a storage medium of the computer program, a magnetic recording medium, an optical recording medium, or the like can be included.

It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (10)

A device for preventing burn-out in an amplifier performance test,
A signal generator for receiving a trigger signal and generating an RF signal;
A driving amplifier for amplifying an RF signal generated by the signal generator;
A test subject amplifier receiving an RF signal amplified from the driving amplifier and generating an output signal with a predetermined gain;
A peak power meter for receiving a signal input to the test object amplifier and an output signal, measuring the gain of the amplifier, and transmitting the measured gain to the test control equipment; And
And a test control device for stopping the performance test if the input signal of the test object amplifier exceeds a predetermined limit range based on the measurement value received from the peak power meter. Device. The method according to claim 1,
The test control equipment comprises:
And a function of interrupting the performance test by turning off the power supplied to the test object amplifier and automatically turning off the output signal of the signal generator if the input signal of the test object amplifier exceeds the limit range,
Wherein the controller performs a function of changing the measurement to the next frequency when the output signal of the amplifier under test satisfies a preset target value. The method according to claim 1,
The driving amplifier includes:
The RF signal output from the signal generator is amplified to a signal of a level higher than a level required for the performance test and the power and control signals are received from the test control equipment and the gain is adjusted using an internal variable gain adjusting amplifier, And the phase of the output signal is controlled using an internal phase shifter. The method according to claim 1,
A directional coupler receiving the RF signal and outputting an attenuated signal and a lossless and lossless signal, respectively; And
And a detector for envelope-detecting the RF signal and outputting a pulse signal,
Wherein the driving amplifier detects the RF signal output from the directional coupler using the detector and then supplies the RF signal to the variable gain amplifier in the driving amplifier so that the output level is kept constant with respect to the target value A device for preventing burn-out in amplifier performance tests. The method according to claim 1,
Further comprising a pulse network analyzer for calculating an adjustment value for phase adjustment of the test object amplifier using a phase value measured from the RF signal and notifying the user of the adjusted value. Device. 6. The method of claim 5,
The test control equipment comprises:
The RF signal transmission information, the output measurement value of the test object amplifier, the gain and phase value measured by the pulse network analyzer, and the pulse network analyzer are interfaced with the signal generator, the peak power meter, and the pulse network analyzer, Is received in real time in the amplifier performance test. The method according to claim 1,
The test control equipment comprises:
Wherein the controller has a function of recording a self-measurement time and controlling the self-measurement time to not exceed a predetermined recommended measurement time, and when the self-measurement time exceeds the recommended measurement time, a warning message is displayed to the user. Burn-out prevention device. The method according to claim 1,
Further comprising a temperature sensor for sensing a temperature of the test subject amplifier,
The test control device senses the temperature of the test subject amplifier input from the temperature sensor and cuts off the power supplied to the test subject amplifier when the temperature exceeds a predetermined range of the normal temperature, And the performance test is stopped by turning off the power amplifier. 6. The method of claim 5,
The test control equipment comprises:
It stores all the input and output data in a database and stores the data in which the burn-out occurred, and then performs a warning message or a blocking function to perform a similar operation in the performance test, thereby preventing the test target amplifier from being lost And the output of the amplifier is measured by the amplifier. In a method for preventing burn-out in an amplifier performance test,
A signal generating step of receiving a trigger signal and generating an RF signal;
A driving amplifying step of amplifying the RF signal generated in the signal generating step;
A DUT testing step of receiving the amplified RF signal and generating an output signal at a predetermined gain;
A peak power step of receiving an input signal and an output signal in the DUT test step and measuring and transmitting an amplification gain; And
And a test control step of stopping the performance test if the input signal of the DUT test step exceeds a predetermined limit range based on the measurement value received from the peak power step. How to prevent.

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