CN219657765U - High-frequency signal power and frequency synchronous measurement probe circuit - Google Patents
High-frequency signal power and frequency synchronous measurement probe circuit Download PDFInfo
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- CN219657765U CN219657765U CN202223565079.1U CN202223565079U CN219657765U CN 219657765 U CN219657765 U CN 219657765U CN 202223565079 U CN202223565079 U CN 202223565079U CN 219657765 U CN219657765 U CN 219657765U
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Abstract
The utility model discloses a high-frequency signal power and frequency synchronous measurement probe circuit, which belongs to the technical field of signal measurement equipment and comprises a signal self-adaptive circuit, wherein the signal self-adaptive circuit is used for dividing a detected high-frequency signal received by an input end into two paths by an output end after being attenuated or gained: one path of the detected high-frequency signal is sequentially connected with a high-speed comparator and a high-speed frequency divider in series and then is electrically connected with the digital signal integrated processing circuit; the other path of detected high-frequency signal is connected with a detector and a high-speed analog-to-digital converter in series in sequence and then is electrically connected with a digital signal integrated processing circuit. The utility model realizes synchronous measurement of high-frequency power and frequency, and improves working efficiency and measurement accuracy.
Description
Technical Field
The utility model belongs to the technical field of signal measurement, and particularly relates to a high-frequency signal power and frequency synchronous measurement probe circuit.
Background
The traditional high-frequency power measurement is to convert the detected high-frequency signal into corresponding direct-current voltage after passing through a wave detector, then convert the direct-current voltage into digital signal after analog-digital conversion, calculate the power value by a singlechip after smooth filtration, and send the power value to a display to display the measurement result. The frequency meter amplifies or blocks the detected high-frequency signal, then changes the signal into a standard digital level, and then counts the signal through frequency division and a counter. And the singlechip reads out the measurement result of the counter in unit time, calculates to obtain a frequency value, and sends the frequency value to the display for display. However, the two above-mentioned instrument measurements are independent of each other, and if two parameters of high-frequency power and high-frequency are to be obtained, only the measurements can be performed separately.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a high-frequency signal power and frequency synchronous measurement probe circuit.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a high-frequency signal power and frequency synchronous measurement probe circuit, which comprises a signal self-adaptive circuit, wherein the signal self-adaptive circuit is used for dividing a detected high-frequency signal received by an input end into two paths by an output end after attenuation gain:
one path of the detected high-frequency signal is sequentially connected with a high-speed comparator and a high-speed frequency divider in series and then is electrically connected with the digital signal integrated processing circuit; the other path of detected high-frequency signal is connected with a detector and a high-speed analog-to-digital converter in series in sequence and then is electrically connected with a digital signal integrated processing circuit.
Further, the signal self-adaptive circuit comprises a step attenuator, a variable gain amplifier and a power divider;
the step attenuator is used for attenuating the detected high-frequency signals;
the variable gain amplifier is used for performing variable gain amplification on the detected high-frequency signal;
the power divider is used for dividing the received high-frequency signal to be detected after the attenuation gain into two paths and is respectively and electrically connected with the detector for detecting the power and the high-speed comparator for detecting the frequency.
Further, the digital signal integrated processing circuit is electrically connected with the step attenuator and the variable gain amplifier respectively.
Further, the temperature measuring device also comprises a temperature measuring circuit and a display,
the temperature measuring circuit is used for transmitting the environmental temperature data to the digital signal integrated processing circuit;
the display is used for displaying frequency, power and temperature data transmitted by the digital signal integrated processing circuit.
Further, the digital signal integrated processing circuit comprises a high-precision frequency meter unit, a digital filtering unit, a power meter unit, a temperature compensation unit and a power compensation module.
Compared with the prior art, the high-frequency signal power and frequency synchronous measurement probe circuit provided by the utility model realizes synchronous measurement of high-frequency power and frequency and improves the working efficiency; the power and frequency measuring device structurally simplifies the circuit composition of the power and frequency measuring device, and reduces the hardware cost.
Drawings
Fig. 1 is a block diagram of a high frequency signal power and frequency synchronous measurement probe circuit provided in accordance with an embodiment of the present utility model.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
As shown in fig. 1, the embodiment of the utility model provides a high-frequency signal power and frequency synchronization measurement probe circuit, which comprises a signal self-adaptive circuit, wherein the signal self-adaptive circuit is used for dividing a detected high-frequency signal received by an input end into two paths by an output end after attenuation and gain.
One path of the detected high-frequency signal is sequentially connected with a high-speed comparator and a high-speed frequency divider in series and then is electrically connected with the digital signal integrated processing circuit; the other path of detected high-frequency signal is connected with a detector and a high-speed analog-to-digital converter in series in sequence and then is electrically connected with a digital signal integrated processing circuit.
In this embodiment, the signal adaptation circuit includes a step attenuator, a variable gain amplifier, and a power divider.
Both the step attenuator and the variable gain amplifier are used for enabling the detected high frequency signal to conform to the range of the measuring range of the subsequent detection circuit, and the signal needs to be controlled within a certain range. The step attenuator is used for attenuating the excessively strong large signal according to the requirement of the measuring range; the variable gain amplifier can perform gain adjustment according to the signals with different sizes detected by the detector, the smaller signal provides larger gain, and the larger signal reduces the gain proportionally so that the subsequent detection circuit is in an optimal linear region.
The power divider is used for dividing the received attenuated and gained detected high-frequency signal into two paths which are respectively and electrically connected with the detector for detecting power and the high-speed comparator for detecting frequency.
In the two circuits, the detector is used for detecting the magnitude of the detected signal and changing the detected signal into corresponding voltage, and transmitting the corresponding voltage to the high-speed analog-to-digital converter.
The high-speed analog-to-digital converter is used for dynamically converting the analog voltage output by the detector into a digital signal and transmitting the digital signal to the digital signal integrated processing circuit to collect records.
The high-speed comparator is used for amplifying and shaping the frequency of the measured signal to enable the frequency to be converted into a standard digital signal level and transmitting the standard digital signal level to the high-speed frequency divider.
The high-speed frequency divider is used for carrying out pre-scaling frequency reduction on the high-frequency signal so as to enable the measured signal to be changed into a relatively low-frequency signal which is easier to process.
When measuring high-frequency power, the circuit cannot be made to an ideal pure resistance state, so that distribution parameters exist, and when measuring, the same power signal measured value can fluctuate along with the change of frequency, and the measuring precision is affected. Therefore, the digital signal integrated processing circuit can utilize the frequency value to carry out frequency response correction on the power, thereby improving the measurement accuracy.
As shown in fig. 1, the synchronous measurement probe circuit further includes a thermometry circuit and a display. The display is used for displaying frequency, power and temperature data transmitted by the digital signal integrated processing circuit.
The temperature measuring circuit is used for detecting the temperature of the use environment and transmitting temperature data to the digital signal integrated processing circuit.
The diode has the characteristic that the voltage drop of PN junction can be changed along with the temperature change, and the problem of unstable measurement result can be brought. The temperature measuring circuit detects the temperature of the use environment, provides temperature data for the subsequent data detecting circuit, compensates the characteristic drift of the diode detector caused by temperature transformation, corrects the measuring result by the data, and improves the stability of the measuring result.
The digital signal integrated processing circuit is used for analyzing, judging, filtering, controlling and calculating the acquired data and sending the final calculation result to the display for display. The digital signal integrated processing circuit is respectively and electrically connected with the step attenuator and the variable gain amplifier.
The digital signal integrated processing circuit comprises a high-precision frequency meter unit, a digital filtering unit, a power meter unit, a temperature compensation unit and a power compensation module.
The working principle of the high-frequency signal power and frequency synchronous measurement probe circuit of the utility model is described as follows.
When the device is used, the signal self-adaptive circuit (the step attenuator, the variable gain amplifier and the power divider) receives the detected high-frequency signal, carries out corresponding attenuation, gain adjustment signal amplitude and the like, carries out power division by the power divider to form two paths of signals, and transmits the two paths of signals to the detector and the high-speed comparator respectively.
One path of signal is detected by a detector, whether the signal meets the range requirement or not, and the like, if the signal is abnormal, the signal acquisition processing is repeated, and the detected value after AD conversion is transmitted to a digital signal integrated processing circuit after being processed by the detector. The other path of signal is subjected to signal shaping and frequency division by a high-speed comparator and a high-speed frequency divider, and is transmitted to a digital signal integrated processing circuit for counting to obtain a frequency value. And meanwhile, acquiring environmental temperature data through a temperature measuring circuit. And finally, synchronously acquiring corresponding detection value, frequency value and temperature data by the digital signal integrated processing circuit. And meanwhile, according to the influence of frequency and temperature, temperature correction and frequency response correction are carried out on the frequency and power value, so that the measurement efficiency and accuracy are improved.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (5)
1. The high-frequency signal power and frequency synchronous measurement probe circuit is characterized by comprising a signal self-adaptive circuit, wherein the signal self-adaptive circuit is used for dividing a detected high-frequency signal received by an input end into two paths by an output end after attenuation gain:
one path of the detected high-frequency signal is sequentially connected with a high-speed comparator and a high-speed frequency divider in series and then is electrically connected with the digital signal integrated processing circuit; the other path of detected high-frequency signal is connected with a detector and a high-speed analog-to-digital converter in series in sequence and then is electrically connected with a digital signal integrated processing circuit.
2. The high frequency signal power and frequency synchronous measurement probe circuit of claim 1, wherein the signal adaptation circuit comprises a step attenuator, a variable gain amplifier, and a power divider;
the step attenuator is used for attenuating the detected high-frequency signals;
the variable gain amplifier is used for performing variable gain amplification on the detected high-frequency signal;
the power divider is used for dividing the received high-frequency signal to be detected after the attenuation gain into two paths and is respectively and electrically connected with the detector for detecting the power and the high-speed comparator for detecting the frequency.
3. The high frequency signal power and frequency synchronous measurement probe circuit according to claim 2, wherein the digital signal integrated processing circuit is electrically controlled to connect the step attenuator and the variable gain amplifier, respectively.
4. The high frequency signal power and frequency synchronous measurement probe circuit according to claim 3, further comprising a temperature measurement circuit and a display,
the temperature measuring circuit is used for transmitting the environmental temperature data to the digital signal integrated processing circuit;
the display is used for displaying frequency, power and temperature data transmitted by the digital signal integrated processing circuit.
5. The high frequency signal power and frequency synchronous measurement probe circuit according to claim 4, wherein the digital signal integrated processing circuit comprises a high precision frequency meter unit, a digital filter unit, a power meter unit, a temperature compensation unit, and a power compensation module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223565079.1U CN219657765U (en) | 2022-12-30 | 2022-12-30 | High-frequency signal power and frequency synchronous measurement probe circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223565079.1U CN219657765U (en) | 2022-12-30 | 2022-12-30 | High-frequency signal power and frequency synchronous measurement probe circuit |
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| Publication Number | Publication Date |
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| CN219657765U true CN219657765U (en) | 2023-09-08 |
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| CN202223565079.1U Active CN219657765U (en) | 2022-12-30 | 2022-12-30 | High-frequency signal power and frequency synchronous measurement probe circuit |
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| CN (1) | CN219657765U (en) |
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- 2022-12-30 CN CN202223565079.1U patent/CN219657765U/en active Active
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