Detection system, method and storage medium for a gsm power amplifier

Abstract

The application provides a detection system and method of a GSM power amplifier and a storage medium, the detection system is used for testing performance parameters of a GSM power amplifier in a to-be-tested chip, the performance parameters include power parameters and harmonic parameters, and the detection system comprises a radio frequency signal source, an MIPI controller, an external directional coupler, a filter, a power meter and a spectrum analyzer, the detection system is used for specifically solving the problem that a signal is difficult to capture and the test is difficult in a specific mode due to intermittent work of the GSM power amplifier, the key parameters such as power and harmonic can be accurately detected at one time, different platform working characteristics can be adapted, the test process is simplified, the test efficiency and accuracy are improved, and the test requirements of the existing power amplifier chip are met.

Description

Technical Field

[0001] This invention relates to the field of radio frequency circuits, and particularly to a detection system, method and storage medium for a GSM power amplifier. Background Technology

[0002] The 2G GSM (Global System for Mobile Communications) power amplifier is a core component of mobile phone voice communication, and its performance determines the communication quality. Mobile phone communication is divided into Frequency Division Duplex (FDD) and Time Division Duplex (TDD). In FDD, uplink and downlink communication are achieved using different frequencies, and the power amplifier works continuously. In TDD, communication is achieved by alternating between different time intervals within a cycle, and the power amplifier works intermittently.

[0003] For frequency division duplex mode, the testing method for power amplifiers is relatively mature. Because the power amplifier is continuously working, the chip can be directly connected to a power meter or spectrum analyzer without complicated operation. Parameters such as power and harmonics can be read directly, making the test convenient and the results stable.

[0004] In time-division duplex mode, the power amplifier outputs intermittent pulse signals. Conventional testing equipment lacks a timing matching and capture mechanism, making it difficult to accurately capture the signals and obtain performance parameters. This directly affects the performance judgment of the power amplifier and increases the difficulty of verifying and optimizing the quality of the 2G GSM communication system. Summary of the Invention

[0005] This invention provides a testing system, method, and storage medium for GSM power amplifiers, aiming to solve the technical problem that existing testing methods are unable to handle the performance testing of power amplifiers operating in intermittent modes.

[0006] To address the aforementioned technical problems, in a first aspect, the present invention provides a testing system for a GSM power amplifier. The testing system is used to test the performance parameters of the GSM power amplifier in the chip under test, the performance parameters including power parameters and harmonic parameters. The testing system comprises:

[0007] A radio frequency (RF) signal source is used to output an RF modulated signal, wherein the RF signal source is used to input the RF modulated signal to the first input terminal of the chip under test;

[0008] A MIPI controller is used to generate a MIPI signal based on a trigger signal and input the MIPI signal to the second input terminal of the chip under test.

[0009] An external directional coupler is used to shunt the radio frequency amplified signal output from the output terminal of the chip under test, and output a first amplified signal through its direct output terminal and a second amplified signal through its coupled output terminal.

[0010] A filter is used to filter the first amplified signal to obtain a filtered signal;

[0011] A power meter, configured to acquire and output the power parameters of the GSM power amplifier based on the trigger signal and the second amplified signal; and,

[0012] A spectrum analyzer is used to acquire and output the harmonic parameters of the GSM power amplifier based on the trigger signal and the filter signal.

[0013] The chip under test and the MIPI controller are powered by different first and second power supplies, respectively.

[0014] Furthermore, the trigger signal is generated by the radio frequency signal source, and the trigger signal is synchronized with the radio frequency modulation signal.

[0015] Furthermore, the detection system also includes a function signal generator, which is used to output a voltage ramp signal and a trigger signal. The function signal generator inputs the voltage ramp signal to the third input terminal of the chip under test, and the trigger signal is synchronized with the voltage ramp signal.

[0016] Furthermore, the detection system also includes a first attenuator, a second attenuator, and a third attenuator, wherein:

[0017] The first attenuator is connected in series between the output terminal of the chip under test and the input terminal of the external directional coupler;

[0018] The second attenuator is connected in series between the direct output terminal of the external directional coupler and the input terminal of the filter;

[0019] The third attenuator is connected in series between the isolation output terminal of the external directional coupler and the input terminal of the power meter.

[0020] Secondly, the present invention also provides a method for detecting a GSM power amplifier, the method being implemented based on the GSM power amplifier detection system described above, and the method comprising the following steps:

[0021] The insertion loss of the RF link between the input and output terminals of the chip under test (which includes the GSM power amplifier under test) is obtained, and the RF signal source, power meter, and spectrum analyzer are pre-compensated based on the insertion loss.

[0022] Turn on the first power supply and the second power supply to power the chip under test and the MIPI controller respectively, and write MIPI signals to the chip under test through the MIPI controller to put it into test mode.

[0023] The chip under test is put into a state where it is powered on but does not receive an RF modulation signal input. The static current ICQ of the first power supply and the duty cycle C of the signal received by the chip under test are recorded at this time.

[0024] The radio frequency modulation signal is input to the chip under test through the radio frequency signal source, and the dynamic current ICC of the first power supply and the input power P1 of the radio frequency modulation signal are recorded at this time.

[0025] Set the power meter to rising edge trigger mode and record the output power P2 of the chip under test obtained by the power meter at this time.

[0026] The harmonic parameters of the chip under test are obtained using the spectrum analyzer.

[0027] The power parameters of the chip under test are calculated based on the static current ICQ, the duty cycle C, the dynamic current ICC, the input power P1, and the output power P2. The power parameters and the harmonic parameters are output together as the performance parameter test results of the chip under test.

[0028] Furthermore, the power parameters include at least one of the following:

[0029] The quiescent operating current, defined as ICQ1, satisfies the following:

[0030] ICQ1 = ICQ / C;

[0031] The dynamic operating current, defined as ICC1, satisfies:

[0032] ICC1 = ICC / C;

[0033] Power gain, defined as Gain, satisfies:

[0034] Gain = P2 - P1.

[0035] Thirdly, the present invention also provides a computer device, comprising: a memory, a processor, and a detection program for a GSM power amplifier stored in the memory and executable on the processor, wherein when the processor executes the detection program for the GSM power amplifier, it implements the steps in the detection method for the GSM power amplifier as described in any of the above embodiments.

[0036] Fourthly, the present invention also provides a storage medium storing a detection program for a GSM power amplifier, wherein when the detection program for the GSM power amplifier is executed by a processor, the steps in the detection method for the GSM power amplifier as described in any of the above embodiments are implemented.

[0037] The beneficial effects achieved by this invention are that it proposes a detection system and corresponding method for GSM power amplifiers, which is used to specifically solve the problems of signal capture difficulty and high testing difficulty caused by intermittent operation of GSM power amplifiers in specific modes. It can accurately detect key parameters such as power and harmonics in one go, and can adapt to the working characteristics of different platforms, simplify the testing process, improve testing efficiency and accuracy, and meet the testing needs of existing power amplifier chips. Attached Figure Description

[0038] The present invention will now be described in detail with reference to the accompanying drawings. The above and other aspects of the present invention will become clearer and more readily understood through the detailed description following the accompanying drawings. In the drawings:

[0039] Figure 1 This is a schematic diagram of the detection system for a GSM power amplifier provided in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of another detection system for a GSM power amplifier provided in an embodiment of the present invention;

[0041] Figure 3 This is a flowchart of the steps of the detection method for a GSM power amplifier provided in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] Example 1

[0045] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a testing system for a GSM power amplifier provided in an embodiment of the present invention. The testing system 100 is used to test the performance parameters of the GSM power amplifier in the chip under test 101. The performance parameters include power parameters and harmonic parameters. The testing system 100 includes:

[0046] Radio frequency signal source 102 is used to output radio frequency modulation signal, wherein the radio frequency signal source 102 is used to input the radio frequency modulation signal to the first input terminal of the chip under test 101;

[0047] The MIPI (Mobile Industry Processor Interface) controller 103 is used to generate a MIPI signal according to a trigger signal and input the MIPI signal to the second input terminal of the chip under test 101.

[0048] An external directional coupler 104 is used to shunt the radio frequency amplified signal output from the output terminal of the chip under test 101, and output a first amplified signal through its direct output terminal and a second amplified signal through its coupled output terminal, respectively.

[0049] Filter 105 is used to filter the first amplified signal to obtain a filtered signal;

[0050] Power meter 106 is used to obtain and output the power parameters of the GSM power amplifier based on the trigger signal and the second amplified signal;

[0051] Spectrum analyzer 107 is used to acquire and output the harmonic parameters of the GSM power amplifier based on the trigger signal and the filter signal;

[0052] The chip under test 101 and the MIPI controller 103 are powered by different first power supplies 109 and second power supplies 110, respectively.

[0053] In this embodiment of the invention, a trigger signal is used to synchronize the signals between the MIPI controller 103, the power meter 106, and the spectrum analyzer 107, so as to achieve a unified testing process. However, in practice, since the GSM power amplifier under test may be produced by different manufacturers and platforms, the generation method of the trigger signal may be slightly different for GSM power amplifiers on different platforms.

[0054] Specifically, such as Figure 1 As shown, the trigger signal is generated by the radio frequency signal source 102, and the trigger signal is synchronized with the radio frequency modulation signal.

[0055] like Figure 2 As shown, Figure 2 This is a schematic diagram of another detection system for a GSM power amplifier provided in an embodiment of the present invention, and... Figure 1 The difference in the structure shown is that, Figure 2The detection system 100 further includes a function signal generator 108, which is used to output a voltage ramp signal and a trigger signal. The function signal generator 108 inputs the voltage ramp signal to the third input terminal of the chip under test 101, and the trigger signal is synchronized with the voltage ramp signal.

[0056] It is understandable that the amplitude of the voltage ramp signal (Vramp) output by the function generator 108 controls the output power of the chip under test 101, which has a similar effect to directly controlling the power of the radio frequency modulation signal output by the radio frequency signal source 102. Therefore, whether the trigger signal is generated by the radio frequency signal source 102 or by the function generator 108, the MIPI controller 103, power meter 106, and spectrum analyzer 107 can synchronously process the signal output by the chip under test 101 according to the trigger signal. In implementation, the specific structure of the detection system 100 can be selected according to actual needs.

[0057] In this embodiment of the invention, the purpose of designing the power supplies for the chip under test 101 and the MIPI controller 103 independently is that the chip under test 101 needs to obtain the corresponding current data through an independent power supply. In this embodiment of the invention, the MIPI controller 103 is used to output MIPI signals to the chip under test, so that the chip under test 101 operates in a specific mode according to the MIPI signal, such as frequency division duplex mode or time division duplex mode.

[0058] The detection system 100 further includes a first attenuator 111, a second attenuator 112, and a third attenuator 113, wherein:

[0059] The first attenuator 111 is connected in series between the output terminal of the chip under test 101 and the input terminal of the external directional coupler 104;

[0060] The second attenuator 112 is connected in series between the direct output terminal of the external directional coupler 104 and the input terminal of the filter 105;

[0061] The third attenuator 113 is connected in series between the isolation output terminal of the external directional coupler 104 and the input terminal of the power meter 106.

[0062] In this embodiment of the invention, the first attenuator 111 has two functions: first, to provide better output matching for the chip under test 101; second, to attenuate the output power of the chip under test 101 to prevent the external directional coupler 104 at the back end from burning out due to excessive output power of the chip under test 101.

[0063] The second attenuator 112 mainly provides good output matching for the external directional coupler 104, while weakening the reflected signal of the filter 105 at the fundamental frequency to avoid it interfering with the front-end test.

[0064] The third attenuator 113 is used to match the coupling port of the external directional coupler 104 and reduce its output signal to protect the power meter 106.

[0065] The beneficial effects achieved by this invention are that it proposes a detection system and corresponding method for GSM power amplifiers, which is used to specifically solve the problems of signal capture difficulty and high testing difficulty caused by intermittent operation of GSM power amplifiers in specific modes. It can accurately detect key parameters such as power and harmonics in one go, and can adapt to the working characteristics of different platforms, simplify the testing process, improve testing efficiency and accuracy, and meet the testing needs of existing power amplifier chips.

[0066] Example 2

[0067] This invention also provides a method for detecting a GSM power amplifier; please refer to [link / reference]. Figure 3 , Figure 3 This is a flowchart illustrating the steps of a GSM power amplifier detection method provided in this embodiment of the invention. The GSM power amplifier detection method is implemented based on the GSM power amplifier detection system described in Embodiment 1 above, and includes the following steps:

[0068] S201. Obtain the insertion loss of the RF link between the input and output terminals of the chip under test containing the GSM power amplifier to be tested, and pre-compensate the RF signal source, power meter and spectrum analyzer according to the insertion loss.

[0069] S202. Turn on the first power supply and the second power supply to power the chip under test and the MIPI controller respectively, and write MIPI signals to the chip under test through the MIPI controller to put it into test mode.

[0070] S203. Put the chip under test in a state where it is powered on but does not receive an RF modulation signal input, and record the static current ICQ of the first power supply and the duty cycle C of the signal received by the chip under test at this time.

[0071] S204. Input the radio frequency modulation signal to the chip under test through the radio frequency signal source, and record the dynamic current ICC of the first power supply and the input power P1 of the radio frequency modulation signal at this time.

[0072] S205. Set the power meter to rising edge trigger mode and record the output power P2 of the chip under test obtained by the power meter at this time.

[0073] S206. Obtain the harmonic parameters of the chip under test using the spectrum analyzer;

[0074] S207. Calculate the power parameters of the chip under test based on the static current ICQ, the duty cycle C, the dynamic current ICC, the input power P1, and the output power P2, and output the power parameters and the harmonic parameters together as the performance parameter detection results of the chip under test.

[0075] The power parameters include at least one of the following:

[0076] The quiescent operating current, defined as ICQ1, satisfies the following:

[0077] ICQ1 = ICQ / C;

[0078] The dynamic operating current, defined as ICC1, satisfies:

[0079] ICC1 = ICC / C;

[0080] Power gain, defined as Gain, satisfies:

[0081] Gain = P2 - P1.

[0082] Referring to the description in the above embodiments, in step S203, when a trigger signal is output through the radio frequency signal source, the signal duty cycle C is the on / off duty cycle of the radio frequency carrier output by the radio frequency signal source.

[0083] When the trigger signal is output through the function signal generator, the signal duty cycle C is the effective level duty cycle of the voltage ramp signal output by the function signal generator.

[0084] The detection method for the GSM power amplifier can achieve the same technical effect as the detection system for the GSM power amplifier in the above embodiments, and will not be repeated here as described in the above embodiments.

[0085] Example 3

[0086] This invention also provides a computer device, please refer to... Figure 4 , Figure 4 This is a schematic diagram of the structure of a computer device provided in an embodiment of the present invention. The computer device 300 includes: a memory 302, a processor 301, and a detection program for a GSM power amplifier stored in the memory 302 and capable of running on the processor 301.

[0087] The processor 301 calls the GSM power amplifier detection program stored in the memory 302 and executes the steps in the GSM power amplifier detection method provided in this embodiment of the invention. Please refer to... Figure 3 Specifically, it includes the following steps:

[0088] S201. Obtain the insertion loss of the RF link between the input and output terminals of the chip under test containing the GSM power amplifier to be tested, and pre-compensate the RF signal source, power meter and spectrum analyzer according to the insertion loss.

[0089] S202. Turn on the first power supply and the second power supply to power the chip under test and the MIPI controller respectively, and write MIPI signals to the chip under test through the MIPI controller to put it into test mode.

[0090] S203. Put the chip under test in a state where it is powered on but does not receive an RF modulation signal input, and record the static current ICQ of the first power supply and the duty cycle C of the signal received by the chip under test at this time.

[0091] S204. Input the radio frequency modulation signal to the chip under test through the radio frequency signal source, and record the dynamic current ICC of the first power supply and the input power P1 of the radio frequency modulation signal at this time.

[0092] S205. Set the power meter to rising edge trigger mode and record the output power P2 of the chip under test obtained by the power meter at this time.

[0093] S206. Obtain the harmonic parameters of the chip under test using the spectrum analyzer;

[0094] S207. Calculate the power parameters of the chip under test based on the static current ICQ, the duty cycle C, the dynamic current ICC, the input power P1, and the output power P2, and output the power parameters and the harmonic parameters together as the performance parameter detection results of the chip under test.

[0095] The power parameters include at least one of the following:

[0096] The quiescent operating current, defined as ICQ1, satisfies the following:

[0097] ICQ1 = ICQ / C;

[0098] The dynamic operating current, defined as ICC1, satisfies:

[0099] ICC1 = ICC / C;

[0100] Power gain, defined as Gain, satisfies:

[0101] Gain = P2 - P1.

[0102] The computer device 300 provided in this embodiment of the invention can implement the steps in the GSM power amplifier detection method as described in the above embodiments, and can achieve the same technical effect. Referring to the description in the above embodiments, it will not be repeated here.

[0103] Example 4

[0104] This invention also provides a storage medium storing a detection program for a GSM power amplifier. When the detection program is executed by a processor, it implements the various processes and steps in the detection method for the GSM power amplifier provided in this invention and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0105] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by hardware related to the detection program or instructions of the GSM power amplifier. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0106] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0107] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0108] The embodiments of the present invention have been described above with reference to the accompanying drawings. The disclosed embodiments are merely preferred embodiments of the present invention. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many equivalent changes in form under the guidance of the present invention without departing from the spirit and scope of the claims. All such changes are within the protection scope of the present invention.

Claims

1. A method for detecting a GSM power amplifier, characterized in that, The testing method for the GSM power amplifier is based on a testing system for the GSM power amplifier. This testing system is used to test the performance parameters of the GSM power amplifier in the chip under test. These performance parameters include power parameters and harmonic parameters. The testing system includes: A radio frequency (RF) signal source is used to output an RF modulated signal, wherein the RF signal source is used to input the RF modulated signal to the first input terminal of the chip under test; A MIPI controller is used to generate a MIPI signal based on a trigger signal and input the MIPI signal to the second input terminal of the chip under test. An external directional coupler is used to shunt the radio frequency amplified signal output from the output terminal of the chip under test, and output a first amplified signal through its direct output terminal and a second amplified signal through its coupled output terminal. A filter is used to filter the first amplified signal to obtain a filtered signal; A power meter, configured to acquire and output the power parameters of the GSM power amplifier based on the trigger signal and the second amplified signal; and, A spectrum analyzer is used to acquire and output the harmonic parameters of the GSM power amplifier based on the trigger signal and the filter signal. The chip under test and the MIPI controller are powered by different first and second power supplies, respectively. The trigger signal is generated by the radio frequency signal source, and the trigger signal is synchronized with the radio frequency modulation signal; The detection system further includes a function signal generator, which is used to output a voltage ramp signal and a trigger signal. The function signal generator inputs the voltage ramp signal to the third input terminal of the chip under test, and the trigger signal is synchronized with the voltage ramp signal. The detection system further includes a first attenuator, a second attenuator, and a third attenuator, wherein: The first attenuator is connected in series between the output terminal of the chip under test and the input terminal of the external directional coupler; The second attenuator is connected in series between the direct output terminal of the external directional coupler and the input terminal of the filter; The third attenuator is connected in series between the isolation output terminal of the external directional coupler and the input terminal of the power meter; The detection method for the GSM power amplifier includes the following steps: The insertion loss of the RF link between the input and output terminals of the chip under test (which includes the GSM power amplifier under test) is obtained, and the RF signal source, power meter, and spectrum analyzer are pre-compensated based on the insertion loss. Turn on the first power supply and the second power supply to power the chip under test and the MIPI controller respectively, and write MIPI signals to the chip under test through the MIPI controller to put it into test mode. The chip under test is put into a state where it is powered on but does not receive an RF modulation signal input. The static current ICQ of the first power supply and the duty cycle C of the signal received by the chip under test are recorded at this time. The radio frequency modulation signal is input to the chip under test through the radio frequency signal source, and the dynamic current ICC of the first power supply and the input power P1 of the radio frequency modulation signal are recorded at this time. Set the power meter to rising edge trigger mode and record the output power P2 of the chip under test obtained by the power meter at this time. The harmonic parameters of the chip under test are obtained using the spectrum analyzer. The power parameters of the chip under test are calculated based on the static current ICQ, the duty cycle C, the dynamic current ICC, the input power P1, and the output power P2. The power parameters and the harmonic parameters are output together as the performance parameter test results of the chip under test.

2. The detection method for a GSM power amplifier according to claim 1, characterized in that, The power parameters include at least one of the following: The quiescent operating current, defined as ICQ1, satisfies the following: ICQ1 = ICQ / C; The dynamic operating current, defined as ICC1, satisfies: ICC1 = ICC / C; Power gain, defined as Gain, satisfies: Gain = P2 - P1.

3. A computer device, characterized in that, include: The system includes a memory, a processor, and a detection program for a GSM power amplifier stored in the memory and executable on the processor. When the processor executes the detection program for the GSM power amplifier, it implements the steps in the detection method for the GSM power amplifier as described in any one of claims 1-2.

4. A storage medium, characterized in that, The storage medium stores a detection program for a GSM power amplifier, which, when executed by a processor, implements the steps of the GSM power amplifier detection method as described in any one of claims 1-2.

Images