CN116032390A - Transmitting signal debugging method, receiving signal debugging method and system thereof - Google Patents
Transmitting signal debugging method, receiving signal debugging method and system thereof Download PDFInfo
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Abstract
The embodiment of the invention discloses a transmitting signal debugging method, a receiving signal debugging method and a system thereof. The method comprises the following steps: enabling the Bluetooth chip to output a debugging signal to a signal input end of the microwave load regulator; the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the antenna, and impedance parameters corresponding to the regulated debugging signals are recorded; testing the signal power and the difference vector modulus value of a plurality of adjusted debugging signals through a frequency spectrum analyzer, and recording the signal power and the difference vector modulus value; and selecting an optimal impedance point according to the plurality of signal powers or the plurality of difference vector modulus values. By means of the method, the embodiment of the invention can be used for adjusting the impedance, rapidly detecting the signal power, the difference vector module value or the signal to noise ratio of the adjusted wireless signal, and selecting the optimal impedance point so as to optimize the quality of the wireless signal.
Description
Technical Field
The embodiment of the invention relates to the field of signal debugging, in particular to a transmitting signal debugging method, a receiving signal debugging method and a system thereof.
Background
With the development of wireless communication technology, wireless communication technology is applied to various fields. The wireless communication system includes a transmitting device and a receiving device, and wireless communication is realized by means of a wireless signal transmitted from the transmitting device to the receiving device, so that the degree of completion of wireless communication depends on the signal quality of the wireless signal. At present, due to weaker wireless signals in a real scene, the quality of wireless signals received by receiving equipment may be poor due to overlarge noise intensity and overlarge interference signals, and the communication process may be affected only because the quality of wireless signals transmitted by transmitting equipment is poor.
When the wireless data communication terminal is used for research, development and debugging and product delivery detection, the traditional detection and debugging mode is to use independent different attenuation values for splicing and manually adjusting the attenuator, and when a large number of detection and debugging exist, the traditional detection method makes the detection operation complex and time-consuming. Therefore, how to quickly detect the wireless communication signal power, the difference vector modulus value and the signal-to-noise ratio is a technical problem to be solved in the invention.
Disclosure of Invention
In order to solve the technical problems, one technical scheme adopted by the embodiment of the invention is as follows: the method is applied to a transmission signal debugging system, and the system comprises a Bluetooth chip, a microwave load regulator, an antenna and a vector signal analyzer, and comprises the following steps: enabling the Bluetooth chip to output a debugging signal to a signal input end of the microwave load regulator; the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the antenna, and impedance parameters corresponding to the regulated debugging signals are recorded; testing the signal power and the difference vector modulus value of a plurality of adjusted debugging signals through the vector signal analyzer, and recording the signal power and the difference vector modulus value; selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values; the antenna is used for transmitting the debugging signal to the vector signal analyzer in a radio mode.
In some embodiments, the selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values includes: selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point;
or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
In order to solve the technical problems, another technical scheme adopted by the embodiment of the invention is as follows: there is provided a transmission signal debugging system, the system comprising: the Bluetooth chip is used for outputting a debugging signal to the microwave load regulator; the microwave load regulator is used for regulating the signal power and the difference vector modulus value of the debugging signal by regulating the self impedance, outputting the regulated debugging signal to the antenna, and selecting an optimal impedance point according to the test result of the vector signal analyzer; an antenna for transmitting the adjusted debug signal to a vector signal analyzer in a radio format; and the vector signal analyzer is used for testing the signal power and the difference vector modulus value of the adjusted debugging signal.
In order to solve the technical problems, another technical scheme adopted by the embodiment of the invention is as follows: the receiving signal debugging method is applied to a receiving signal debugging system, the system comprises Bluetooth signal transmitting equipment, an antenna, a microwave load regulator, a Bluetooth chip, a chip intermediate frequency output IO and a testing instrument, and the method comprises the following steps: causing the bluetooth signal transmitting apparatus to transmit a debug signal to the antenna in a radio form, so that the antenna inputs the received debug signal to the microwave load regulator; the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the Bluetooth chip, and impedance parameters corresponding to the regulated debugging signals are recorded; the testing instrument is enabled to test a plurality of the adjusted debugging signals, and signal parameters corresponding to the adjusted debugging signals are recorded; and the Bluetooth chip outputs a debugging signal to the test instrument through the chip intermediate frequency output IO.
In some embodiments, the test instrument comprises a vector signal analyzer, the signal parameters comprise signal power and a difference vector modulus value, the method further comprising: and selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values.
In some embodiments, the selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values includes: selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point; or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
In some embodiments, the test instrument further comprises a spectrum analyzer, the signal parameter comprises a signal-to-noise ratio, the method further comprising: and selecting the maximum value of the signal-to-noise ratios as an optimal signal-to-noise ratio, and selecting the adjusted debugging signal corresponding to the optimal signal-to-noise ratio, wherein the corresponding impedance parameter is an impedance matching point.
In order to solve the technical problems, another technical scheme adopted by the embodiment of the invention is as follows: there is provided a received signal debugging system, the system comprising: a Bluetooth signal transmitting device for transmitting a debug signal to an antenna in the form of a radio; the antenna is used for receiving the debugging signal and outputting the debugging signal to the microwave load regulator; the microwave load regulator is used for regulating signal parameters of the debugging signals by regulating self impedance, outputting the regulated debugging signals to the Bluetooth chip and selecting optimal impedance points according to a test result of the test instrument; the Bluetooth chip is used for receiving the adjusted debugging signals; chip intermediate frequency output IO used for outputting the regulated debugging signals received by the Bluetooth chip to a testing instrument; and the testing instrument is used for testing the signal parameters of the adjusted debugging signals.
In some embodiments, the test instrument comprises a vector signal analyzer or a spectrum analyzer, wherein the vector signal analyzer is configured to test the signal power and the difference vector modulus of the adjusted debug signal; the spectrum analyzer is used for testing the signal-to-noise ratio of the adjusted debugging signal.
The beneficial effects of the embodiment of the invention are as follows: compared with the prior art, the method and the device can select the best impedance point by adjusting the impedance and rapidly detecting the signal power, the difference vector modulus value or the signal-to-noise ratio of the adjusted wireless signal, so that the quality of the wireless signal is optimal.
Drawings
Fig. 1 is a schematic structural diagram of a transmission signal debugging system according to an embodiment of the present invention;
fig. 2 is a flow chart of a method for debugging a transmission signal according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a received signal debug system according to an embodiment of the present invention;
fig. 4 is a flow chart of a method for debugging a received signal according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another received signal debug system according to an embodiment of the present invention;
fig. 6 is a flowchart of another method for debugging a received signal according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In order to solve the above technical problems, the embodiment of the present invention provides a transmit signal debugging system for a transmit signal, the structure schematic diagram of the system is shown in fig. 1, and the system includes a bluetooth chip 110, a microwave load regulator 120, an antenna 130 and a vector signal analyzer 140.
In the embodiment of the present invention, the signal debugged by the transmission signal debugging system 10 is the signal received by the bluetooth chip 110.
The signal output end of the bluetooth chip 110 is connected to the signal input end of the microwave load regulator 120, and the bluetooth chip 110 is used for outputting a debug signal to the microwave load regulator 120.
The microwave load regulator is also called a tunnel, tuner or load pull, and is used for adjusting the impedance of a microwave signal so as to adjust the signal quality of a transmitted signal. In the embodiment of the invention, the quality of the signal is mainly evaluated by signal-to-noise ratio, signal power or difference vector modulus.
The signal output end of the microwave load regulator 120 is connected to the input end of the antenna 130, the microwave load regulator 120 adjusts the signal power and the difference vector modulus of the debug signal by adjusting the self impedance, outputs the adjusted debug signal to the antenna, and selects an optimal impedance point according to the test result of the vector signal analyzer 140.
The antenna 130 is used to transmit the conditioned debug signal to the vector signal analyzer 140 in the form of a radio.
In an embodiment of the present invention, vector signal analyzer 140 is used to test the signal power and differential vector modulus (DEFM) of the conditioned debug signal.
The DEVM, collectively referred to as the Delta EVM, or Differential EVM, is defined as the expression that is the difference vector modulus of the excitation IQ signal vector and the response IQ signal vector.
The vector signal enters a DAC (digital-to-analog converter) from digital baseband modulation, then enters an up-converter and a power amplifier to finish the transmitting process. Because of the undesirable characteristics of the transmitting circuit itself, such as the nonlinear characteristics of the power amplifier and the up-converted spurs, the vector of the vector signal may be distorted during the transmitting process, and the original vector may deviate from the ideal position. The error vector is a vector describing the deviation between the ideal signal and the actual signal, and is a vector of deviation between the vector of the ideal signal on the constellation and the measurement vector obtained after the actual demodulation.
The most important index in the quantized representation of the vector signal quality is the error vector magnitude, EVM (Error Vector Magnitude) for short, which is the modulus of the error vector complex number. The phase of the error vector is often referred to as the phase error. In the measurement field, EVM is typically the ratio of the mean square value (RMS) of the error vector magnitude to the mean square value (RMS) of the ideal signal vector for a number of sample points. The mean square value is used to calculate EVM statistically, describing the magnitude of the overall error vector of the modulated signal, rather than the result at a certain instant in time, which is reasonable for the evaluation of the communication signal.
Based on the above-mentioned transmission signal debugging system 10, the embodiment of the invention provides a transmission signal debugging method, which includes the following steps, and a flow chart of the method is shown in fig. 2:
step S100: the Bluetooth chip outputs a debugging signal to the signal input end of the microwave load regulator.
Specifically, the bluetooth chip is enabled to continuously output the debug signal to the signal input end of the microwave load regulator, for example, the bluetooth chip respectively outputs the first debug signal, the second debug signal and the third debug signal to the signal input end of the microwave load regulator.
Step S200: the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the antenna, and impedance parameters corresponding to the regulated debugging signals are recorded.
Continuing the above example, changing the impedance of the microwave load regulator to a first impedance, and outputting the adjusted first debug signal to the antenna, and recording the first impedance; changing the impedance of the microwave load regulator to a second impedance, outputting the regulated second debugging signal to the antenna, and recording the second impedance; changing the impedance of the microwave load regulator to a third impedance, outputting the regulated third debugging signal to the antenna, and recording the third impedance.
Step S300: and testing the signal power and the difference vector modulus value of a plurality of adjusted debugging signals through a vector signal analyzer, and recording the signal power and the difference vector modulus value.
Specifically, the vector signal analyzer tests the adjusted debugging signal, obtains the signal power and the difference vector modulus value of the debugging signal, records the difference vector modulus value, and tests the subsequently received signal.
Continuing the above example, the vector signal analyzer tests the adjusted first debug signal to obtain a first signal power and a first difference vector modulus value corresponding to the first debug signal; testing the adjusted second debugging signal to obtain second signal power and a second difference vector module value corresponding to the second debugging signal; and testing the adjusted third debugging signal to obtain a third signal power and a third difference vector module value corresponding to the third debugging signal.
Step S400: and selecting an optimal impedance point according to the plurality of signal powers or the plurality of difference vector modulus values.
In an embodiment of the present invention, step S400 includes:
selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point;
or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
Specifically, if the signal power is used as an evaluation criterion of signal quality, the maximum signal power is selected from the first signal power, the second signal power and the third signal power, the value is used as an optimal signal power, and the adjusted debug signal corresponding to the optimal signal power has a corresponding impedance parameter as an optimal impedance point. If the first signal power is greater than the second signal power and the third signal power, the first signal power is the optimal signal power, and the first impedance is the optimal impedance point. The same is true for the second signal power or the third signal power.
If the difference vector module value is used as an evaluation standard of signal quality, the smallest difference vector module value is selected from the first difference vector module value, the second difference vector module value and the third difference vector module value, the smallest difference vector module value is used as an optimal difference vector module value, and the adjusted debugging signal corresponding to the optimal difference vector module value has the corresponding impedance parameter of an optimal impedance point. If the first difference vector module value is smaller than the second difference vector module value and the third difference vector module value, the first difference vector module value is the optimal signal power, and the first impedance is the optimal impedance point. The same is true for the second or third difference vector modulus.
In the embodiment of the invention, the signal power or the difference vector module value of the adjusted transmitting signal can be rapidly detected by adjusting the impedance, and the optimal impedance point can be selected, so that the quality of the transmitting signal can be optimal.
In addition, for the received signal of the bluetooth chip, the embodiment of the invention also provides a received signal debugging system 20, and a schematic structural diagram of the system is shown in fig. 3, and the system comprises a bluetooth signal transmitting device 210, a microwave load regulator 220, an antenna 230, a bluetooth chip 240, a chip intermediate frequency output IO250 and a vector signal analyzer 261.
In the embodiment of the present invention, the signal debugged by the received signal debug system 20 is a signal transmitted by the bluetooth chip 240.
The bluetooth signal transmitting device 210 establishes communication with the antenna 230 by means of a wireless connection, and the bluetooth signal transmitting device 210 is configured to transmit a debug signal to the antenna 230.
The antenna 230 is used to output the debug signal to the microwave load regulator 220.
The signal input end of the microwave load regulator 220 is connected to the output end of the antenna 230, the microwave load regulator 220 adjusts the signal power and the difference vector modulus of the debug signal by adjusting the self impedance, outputs the adjusted debug signal to the bluetooth chip 240, and selects an optimal impedance point according to the test result of the vector signal analyzer 261.
The signal output end of the bluetooth chip 240 is connected to the input end of the chip intermediate frequency output IO250, and the bluetooth chip 240 outputs the adjusted debug signal to the chip intermediate frequency output IO250.
The signal output end of the chip intermediate frequency output IO250 is connected to the signal input end of the vector signal analyzer 261, and the chip intermediate frequency output IO250 outputs the adjusted debug signal to the vector signal analyzer 261.
In the present embodiment, the vector signal analyzer 261 is used to test the signal power and the difference vector modulus of the adjusted debug signal.
Based on the received signal debugging system 20, the embodiment of the invention provides a method for debugging a transmitting signal, which comprises the following steps, wherein the flow chart of the method is shown in fig. 4:
step S100: the bluetooth signal transmitting device is caused to transmit the debug signal to the antenna in the form of a radio.
Specifically, the bluetooth signal transmitting device is caused to continuously transmit the debug signal to the antenna in a radio form, for example, the bluetooth signal transmitting device transmits the first debug signal, the second debug signal, and the third debug signal to the antenna in a radio form, respectively, so that the antenna inputs the received debug signals to the microwave load regulator.
Step S200: the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the Bluetooth chip, and impedance parameters corresponding to the regulated debugging signals are recorded.
Continuing the above example, changing the impedance of the microwave load regulator to a first impedance, and outputting the regulated first debug signal to the bluetooth chip, and recording the first impedance; changing the impedance of the microwave load regulator to a second impedance, outputting the regulated second debugging signal to the Bluetooth chip, and recording the second impedance; changing the impedance of the microwave load regulator to a third impedance, outputting the regulated third debugging signal to the Bluetooth chip, and recording the third impedance.
Step S300: and testing a plurality of the adjusted debugging signals by the testing instrument, and recording signal parameters corresponding to the adjusted debugging signals.
Specifically, the vector signal analyzer tests the adjusted debugging signal, obtains the signal power and the difference vector modulus value of the debugging signal, records the difference vector modulus value, and tests the subsequently received signal.
Continuing the above example, the vector signal analyzer tests the adjusted first debug signal to obtain a first signal power and a first difference vector modulus value corresponding to the first debug signal; testing the adjusted second debugging signal to obtain second signal power and a second difference vector module value corresponding to the second debugging signal; and testing the adjusted third debugging signal to obtain a third signal power and a third difference vector module value corresponding to the third debugging signal.
Step S400: and selecting an optimal impedance point according to the plurality of signal powers or the plurality of difference vector modulus values.
In an embodiment of the present invention, step S400 includes:
selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point;
or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
Specifically, if the signal power is used as an evaluation criterion of signal quality, the maximum signal power is selected from the first signal power, the second signal power and the third signal power, the value is used as an optimal signal power, and the adjusted debug signal corresponding to the optimal signal power has a corresponding impedance parameter as an optimal impedance point. If the first signal power is greater than the second signal power and the third signal power, the first signal power is the optimal signal power, and the first impedance is the optimal impedance point. The same is true for the second signal power or the third signal power.
If the difference vector module value is used as an evaluation standard of signal quality, the smallest difference vector module value is selected from the first difference vector module value, the second difference vector module value and the third difference vector module value, the smallest difference vector module value is used as an optimal difference vector module value, and the adjusted debugging signal corresponding to the optimal difference vector module value has the corresponding impedance parameter of an optimal impedance point. If the first difference vector module value is smaller than the second difference vector module value and the third difference vector module value, the first difference vector module value is the optimal signal power, and the first impedance is the optimal impedance point. The same is true for the second or third difference vector modulus.
In the above way, the embodiment of the invention can select the best impedance point by adjusting the impedance and rapidly detecting the signal power or the difference vector module value of the adjusted received signal, so as to optimize the quality of the received signal.
In another embodiment, another system for debugging a received signal is provided, and the structure of the system is shown in fig. 5, and the system includes a bluetooth signal transmitting device 210, a microwave load regulator 220, an antenna 230, a bluetooth chip 240, a chip intermediate frequency output IO250 and a spectrum analyzer 262.
In the embodiment of the present invention, the signal debugged by the received signal debug system 20 is a signal transmitted by the bluetooth chip 240.
The bluetooth signal transmitting device 210 establishes communication with the antenna 230 by means of a wireless connection, and the bluetooth signal transmitting device 210 is configured to transmit the debug signal antenna 230.
In the embodiment of the present invention, the bluetooth signal transmitting device 210 is a 2.4G signal generator, and is specifically configured to transmit a radio frequency single tone signal to the antenna 230.
The antenna 230 is used to output the debug signal to the microwave load regulator 220.
The signal input end of the microwave load regulator 220 is connected to the output end of the antenna 230, the microwave load regulator 220 adjusts the signal power and the difference vector modulus of the debug signal by adjusting the self impedance, outputs the adjusted debug signal to the bluetooth chip 240, and selects an optimal impedance point according to the test result of the spectrum analyzer 262.
The signal output end of the bluetooth chip 240 is connected to the input end of the chip intermediate frequency output IO250, and the bluetooth chip 240 outputs the adjusted debug signal to the chip intermediate frequency output IO250.
The signal output end of the chip intermediate frequency output IO250 is connected to the signal input end of the vector signal analyzer 261, and the chip intermediate frequency output IO250 outputs the adjusted debug signal to the spectrum analyzer 262.
The spectrum analyzer is an instrument for researching the spectrum structure of electric signals, is used for measuring signal parameters such as signal distortion degree, modulation degree, spectrum purity, frequency stability, intermodulation distortion and the like, can be used for measuring certain parameters of circuit systems such as amplifiers, filters and the like, and is a multipurpose electronic measuring instrument. It may also be referred to as a frequency domain oscilloscope, a tracking oscilloscope, an analysis oscilloscope, a harmonic analyzer, a frequency characteristic analyzer, or a fourier analyzer, etc. Modern spectrum analyzers can display the analysis results in an analog or digital manner, and can analyze electrical signals in all radio frequency bands ranging from very low frequencies below 1 hz to the sub-millimeter band. If a digital circuit and a microprocessor are adopted in the instrument, the instrument has the functions of storage and operation; the automatic test system is easily constructed by configuring the standard interface.
In an embodiment of the present invention, spectrum analyzer 262 is used to test the signal-to-noise ratio of the conditioned debug signal.
Based on the received signal debug system 20, another method for debugging a transmission signal is provided in the embodiment of the present invention, and the method includes the following steps, and a flow chart thereof is shown in fig. 6:
step S100: the bluetooth signal transmitting device is caused to transmit the debug signal to the antenna in the form of a radio.
Specifically, the bluetooth signal transmitting device is caused to continuously transmit the debug signal to the antenna in a radio form, for example, the bluetooth signal transmitting device transmits the first debug signal, the second debug signal, and the third debug signal to the antenna in a radio form, respectively, so that the antenna inputs the received debug signals to the microwave load regulator.
Step S200: the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the Bluetooth chip, and impedance parameters corresponding to the regulated debugging signals are recorded.
Continuing the above example, changing the impedance of the microwave load regulator to a first impedance, and outputting the regulated first debug signal to the bluetooth chip, and recording the first impedance; changing the impedance of the microwave load regulator to a second impedance, outputting the regulated second debugging signal to the Bluetooth chip, and recording the second impedance; changing the impedance of the microwave load regulator to a third impedance, outputting the regulated third debugging signal to the Bluetooth chip, and recording the third impedance.
Step S300: and testing a plurality of the adjusted debugging signals by the testing instrument, and recording signal parameters corresponding to the adjusted debugging signals.
Specifically, the spectrum analyzer tests the adjusted debugging signal, obtains the signal-to-noise ratio of the debugging signal and records the signal-to-noise ratio, and also tests the subsequently received signal.
Continuing the above example, the vector signal analyzer tests the adjusted first debug signal to obtain a first signal-to-noise ratio corresponding to the first debug signal; testing the adjusted second debugging signal to obtain a second signal-to-noise ratio corresponding to the second debugging signal; and testing the adjusted third debugging signal to obtain a third signal-to-noise ratio corresponding to the third debugging signal.
Step S500: and selecting the maximum value in the signal-to-noise ratios as the optimal signal-to-noise ratio, and selecting the adjusted debugging signal corresponding to the optimal signal-to-noise ratio, wherein the corresponding impedance parameter is an impedance matching point.
Specifically, the signal-to-noise ratio is used as an evaluation standard of signal quality, the maximum signal-to-noise ratio is selected from the first signal-to-noise ratio, the second signal-to-noise ratio and the third signal-to-noise ratio, the value is used as an optimal signal-to-noise ratio, the adjusted debugging signal corresponding to the optimal signal-to-noise ratio is used as an impedance matching point, and the corresponding impedance parameter is used as an impedance matching point. If the first signal-to-noise ratio is greater than the second signal-to-noise ratio and the third signal-to-noise ratio, the first signal-to-noise ratio is the optimal signal-to-noise ratio, and the first impedance is an impedance matching point. The same is true for the second signal-to-noise ratio or the third signal-to-noise ratio.
In comparison with the prior art, the method and the device can be used for adjusting the impedance, rapidly detecting the signal-to-noise ratio of the adjusted received signal and selecting the impedance matching point so as to optimize the quality of the received signal.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; the technical features of the above embodiments or in the different embodiments may also be combined under the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in details for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A transmit signal debugging method, characterized in that it is applied to a transmit signal debugging system, the system comprising a bluetooth chip, a microwave load regulator, an antenna and a vector signal analyzer, the method comprising:
enabling the Bluetooth chip to output a debugging signal to a signal input end of the microwave load regulator;
the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the antenna, and impedance parameters corresponding to the regulated debugging signals are recorded;
testing the signal power and the difference vector modulus value of a plurality of adjusted debugging signals through the vector signal analyzer, and recording the signal power and the difference vector modulus value;
selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values;
the antenna is used for transmitting the debugging signal to the vector signal analyzer in a radio mode.
2. The method of claim 1, wherein selecting an optimal impedance point according to a number of the signal powers or a number of the difference vector modulus values comprises:
selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point;
or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
3. A transmit signal debugging system, the system comprising:
the Bluetooth chip is used for outputting a debugging signal to the microwave load regulator;
the microwave load regulator is used for regulating the signal power and the difference vector modulus value of the debugging signal by regulating the self impedance, outputting the regulated debugging signal to the antenna, and selecting an optimal impedance point according to the test result of the vector signal analyzer;
an antenna for transmitting the adjusted debug signal to a vector signal analyzer in a radio format;
and the vector signal analyzer is used for testing the signal power and the difference vector modulus value of the adjusted debugging signal.
4. The method is characterized by being applied to a received signal debugging system, wherein the system comprises Bluetooth signal transmitting equipment, an antenna, a microwave load regulator, a Bluetooth chip, a chip intermediate frequency output IO and a testing instrument, and the method comprises the following steps:
causing the bluetooth signal transmitting apparatus to transmit a debug signal to the antenna in a radio form, so that the antenna inputs the received debug signal to the microwave load regulator;
the impedance of the microwave load regulator is changed, so that the microwave load regulator outputs a plurality of regulated debugging signals to the Bluetooth chip, and impedance parameters corresponding to the regulated debugging signals are recorded;
the testing instrument is enabled to test a plurality of the adjusted debugging signals, and signal parameters corresponding to the adjusted debugging signals are recorded;
and the Bluetooth chip outputs a debugging signal to the test instrument through the chip intermediate frequency output IO.
5. The method of claim 4, wherein the test instrument comprises a vector signal analyzer, the signal parameters comprising signal power and a differential vector modulus, the method further comprising:
and selecting an optimal impedance point according to a plurality of signal powers or a plurality of difference vector modulus values.
6. The method of claim 5, wherein selecting an optimal impedance point based on a number of the signal powers or a number of the difference vector modulus values comprises:
selecting the maximum value of the plurality of signal powers as an optimal signal power, and selecting the adjusted debugging signal corresponding to the optimal signal power, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point;
or selecting the minimum value of the plurality of difference vector modular values as an optimal difference vector modular value, and selecting the adjusted debugging signal corresponding to the optimal difference vector modular value, wherein the corresponding impedance parameter of the debugging signal is the optimal impedance point.
7. The method of claim 4, wherein the test instrument further comprises a spectrum analyzer, the signal parameter comprises a signal-to-noise ratio, the method further comprising:
and selecting the maximum value of the signal-to-noise ratios as an optimal signal-to-noise ratio, and selecting the adjusted debugging signal corresponding to the optimal signal-to-noise ratio, wherein the corresponding impedance parameter is an impedance matching point.
8. A received signal debugging system, the system comprising:
a Bluetooth signal transmitting device for transmitting a debug signal to an antenna in the form of a radio;
the antenna is used for receiving the debugging signal and outputting the debugging signal to the microwave load regulator;
the microwave load regulator is used for regulating signal parameters of the debugging signals by regulating self impedance, outputting the regulated debugging signals to the Bluetooth chip and selecting optimal impedance points according to a test result of the test instrument;
the Bluetooth chip is used for receiving the adjusted debugging signals;
chip intermediate frequency output IO used for outputting the regulated debugging signals received by the Bluetooth chip to a testing instrument;
and the testing instrument is used for testing the signal parameters of the adjusted debugging signals.
9. The system of claim 8, wherein the test instrument comprises a vector signal analyzer or a spectrum analyzer, wherein,
the vector signal analyzer is used for testing the signal power and the difference vector modulus of the adjusted debugging signal;
the spectrum analyzer is used for testing the signal-to-noise ratio of the adjusted debugging signal.
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