CN109088675B - Channel calibration method and device for radio frequency signal source - Google Patents
Channel calibration method and device for radio frequency signal source Download PDFInfo
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- CN109088675B CN109088675B CN201710441083.1A CN201710441083A CN109088675B CN 109088675 B CN109088675 B CN 109088675B CN 201710441083 A CN201710441083 A CN 201710441083A CN 109088675 B CN109088675 B CN 109088675B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
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Abstract
The invention provides a method and a device for calibrating a channel of a radio frequency signal source, and relates to the technical field of radio frequency signal sources. The method comprises the steps of firstly adjusting a channel gear of a radio frequency signal source to a gear to be calibrated, then adjusting the output frequency of the radio frequency signal source in a monotone stepping mode under the gear to be calibrated, and determining the measurement result of the gear to be calibrated corresponding to each output frequency, so that calibration data of the gear to be calibrated under each output frequency is determined according to the measurement result of the gear to be calibrated corresponding to each output frequency and the direct measurement result corresponding to each output frequency, and the calibration of the gear to be calibrated under each output frequency is completed. Instead of selecting the output frequency first and then switching the channel gear of the radio frequency signal source frequently to complete the channel calibration, the problem that the stabilization time required by the radio frequency signal source is increased due to frequent switching of the channel gear is solved, the stabilization time required by the radio frequency signal source is greatly shortened, and the channel calibration efficiency of the radio frequency signal source is improved.
Description
Technical Field
The present invention relates to the field of radio frequency signal source technologies, and in particular, to a method and an apparatus for calibrating a path of a radio frequency signal source.
Background
The rf signal source is an apparatus for generating various rf signals, such as a continuous wave signal, a general measurement signal, an analog modulation signal, an IQ (In-phase Quadrature) modulation signal, and a user-defined signal. The radio frequency signal source is commonly used for calibrating a plurality of radio frequency measuring instruments such as a spectrum analyzer, a modulation degree analyzer, a power meter, a frequency meter, a radio frequency millivoltmeter, a high-frequency digital oscilloscope and the like, and has wide application in research and development, production test in various fields such as mobile communication, aerospace, national defense and military industry and the like, electronic countermeasure in the safety field and the like.
For any kind of radio frequency signal source instrument, the radio frequency part can cause great influence on the accuracy of the signal generated by the signal source, so that the function of the radio frequency part needs to be realized very accurately if a high-precision signal source instrument is produced, and the problem of power calibration in the radio frequency signal source is the biggest influence on the accurate realization of the function of the radio frequency part. In a power control system for rf signal sources, the path (attenuator, amplifier and pass-through) is an important module that directly determines the accuracy of the output power. In general, the prior art adopts the rule of calibrating the path module of the rf signal source to calibrate all paths in a monotonic order (i.e. from the amplifier stage to the stage with the maximum attenuation of the attenuator) at each frequency point, which has the advantage of conveniently organizing the data structure because the paths are calibrated in a monotonic order at each frequency point, and one frequency point corresponds to one set of calibration data. The method has the disadvantages that all paths are calibrated monotonously (from the amplifier position to the attenuator attenuation maximum position) under each frequency, the output amplitude change is large due to frequent switching of the paths under each frequency point, so that the stability time of a testing machine and a radio frequency signal source is long, and the cost is large for enterprises needing to produce a large batch of radio frequency signal source instruments, so that the method has certain efficiency defects for path calibration in the radio frequency signal source.
Disclosure of Invention
The embodiment of the invention provides a method and a device for calibrating a channel of a radio frequency signal source, which aim to solve the problem of low efficiency of channel calibration of the radio frequency signal source in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a path calibration method of a radio frequency signal source comprises the following steps:
adjusting a passage gear of a radio frequency signal source to a gear to be calibrated;
under the gear to be calibrated, adjusting the output frequency of the radio frequency signal source in a monotone stepping mode, and determining the measurement result of the gear to be calibrated corresponding to each output frequency;
determining calibration data of the gear to be calibrated under each output frequency according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency;
and calibrating the gears to be calibrated under each output frequency according to the calibration data.
Specifically, the output end of the radio frequency signal source is connected with the input end of a frequency spectrograph;
the path calibration method of the radio frequency signal source further comprises the following steps:
adjusting a channel gear of the radio frequency signal source to a straight-through channel gear;
and under the through passage gear, adjusting the output frequency of the radio frequency signal source from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and acquiring through measurement results corresponding to the output frequencies through the frequency spectrograph.
Specifically, the gear to be calibrated includes an amplification path gear and each attenuation path gear.
Specifically, under the gear to be calibrated, the output frequency of the radio frequency signal source is adjusted in a monotone stepping manner, and the measurement result of the gear to be calibrated corresponding to each output frequency is determined, including:
under the amplification channel gear, the output frequency of the radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measurement result of the amplification channel gear corresponding to each output frequency is obtained through the frequency spectrograph.
Specifically, determining calibration data of the to-be-calibrated gear at each output frequency according to the measurement result of the to-be-calibrated gear corresponding to each output frequency and the through measurement result corresponding to each output frequency includes:
determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the direct-connection measurement result corresponding to each output frequency; calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Specifically, calibrating the gear to be calibrated at each output frequency according to the calibration data includes:
and calibrating the amplification path gear at each output frequency according to the calibration data of the amplification path gear at each output frequency.
Specifically, adjusting the access gear of the radio frequency signal source to the gear to be calibrated includes:
and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear.
Specifically, under the gear to be calibrated, the output frequency of the radio frequency signal source is adjusted in a monotone stepping manner, and the measurement result of the gear to be calibrated corresponding to each output frequency is determined, including:
under a damping passage gear, the output frequency of a radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measuring result of the damping passage gear corresponding to each output frequency is obtained through the frequency spectrograph.
Specifically, determining calibration data of the to-be-calibrated gear at each output frequency according to the measurement result of the to-be-calibrated gear corresponding to each output frequency and the through measurement result corresponding to each output frequency includes:
determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the straight-through measurement result corresponding to each output frequency; calibration data of the attenuation path gear under each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Specifically, calibrating the gear to be calibrated at each output frequency according to the calibration data includes:
and calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
A path calibration apparatus for a radio frequency signal source, comprising:
the access gear adjusting unit is used for adjusting an access gear of the radio frequency signal source to a gear to be calibrated;
the output frequency adjusting unit is used for adjusting the output frequency of the radio frequency signal source in a monotone stepping mode under the gear to be calibrated and determining the measuring result of the gear to be calibrated corresponding to each output frequency;
the calibration data determining unit is used for determining calibration data of the gear to be calibrated under each output frequency according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency;
and the calibration unit is used for calibrating the gears to be calibrated under each output frequency according to the calibration data.
Specifically, the output end of the radio frequency signal source is connected with the input end of a frequency spectrograph;
the access gear adjusting unit is also used for adjusting an access gear of the radio frequency signal source to a through access gear;
the output frequency adjusting unit is further configured to adjust the output frequency of the radio frequency signal source from a preset first preset frequency to a preset second preset frequency in a monotonic stepping manner in the through-path gear, and obtain through-measurement results corresponding to the output frequencies through the frequency spectrograph.
Specifically, the gear to be calibrated in the path gear adjusting unit includes an amplification path gear and each attenuation path gear.
In addition, the output frequency adjusting unit is specifically configured to:
under the amplification channel gear, the output frequency of the radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measurement result of the amplification channel gear corresponding to each output frequency is obtained through the frequency spectrograph.
In addition, the calibration data determining unit is specifically configured to:
determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the direct-connection measurement result corresponding to each output frequency; calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Furthermore, the calibration unit is specifically configured to:
and calibrating the amplification path gear at each output frequency according to the calibration data of the amplification path gear at each output frequency.
Furthermore, the path gear adjustment unit is specifically configured to:
and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear.
Furthermore, the output frequency adjustment unit is specifically configured to:
under a damping passage gear, the output frequency of a radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measuring result of the damping passage gear corresponding to each output frequency is obtained through the frequency spectrograph.
Furthermore, the calibration data determining unit is specifically configured to:
determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the straight-through measurement result corresponding to each output frequency; calibration data of the attenuation path gear under each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Furthermore, the calibration unit is specifically configured to:
and calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
The embodiment of the invention provides a method and a device for calibrating a channel of a radio frequency signal source, which comprises the steps of firstly adjusting the channel gear of the radio frequency signal source to a gear to be calibrated, then adjusting the output frequency of the radio frequency signal source in a monotone stepping mode under the gear to be calibrated, and determining the measurement result of the gear to be calibrated corresponding to each output frequency, so that calibration data of the gear to be calibrated under each output frequency is determined according to the measurement result of the gear to be calibrated corresponding to each output frequency and the direct measurement result corresponding to each output frequency, and the calibration of the gear to be calibrated under each output frequency is completed. Instead of selecting the output frequency first and then switching the channel gear of the radio frequency signal source frequently to complete the channel calibration, the problem that the stabilization time required by the radio frequency signal source is increased due to frequent switching of the channel gear is solved, the stabilization time required by the radio frequency signal source is greatly shortened, and the channel calibration efficiency of the radio frequency signal source is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first flowchart of a method for calibrating a path of a radio frequency signal source according to an embodiment of the present invention;
fig. 2 is a second flowchart of a method for calibrating a path of a radio frequency signal source according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a connection between a radio frequency signal source and a spectrometer according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a path calibration apparatus for a radio frequency signal source according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the process of implementing the present invention, the inventor finds that in the prior art, the path calibration is generally completed by selecting the output frequency and then frequently switching the path gear of the rf signal source. However, when the test instrument (e.g. spectrometer) tests a smaller amplitude, it turns on the preamplifier (i.e. preamplifier), reduces the Bandwidth of the divided band (RBW) and the frequency sweep width (SPAN), and in this process, each operation requires a settling time, and assuming that the settling time of each operation is t, all the paths (the through path, the amplifying path and the attenuating path) need to be switched for 3 times in total (in actual calibration, the number of times of switching may be more), the frequency is stepped to 50MHZ, and 120 frequency points are calibrated, and the machine settling time is required in the prior art: t × 3 × 120 is 360 t.
As shown in fig. 1, a method for calibrating a path of a radio frequency signal source according to an embodiment of the present invention includes:
And 102, under the gear to be calibrated, adjusting the output frequency of the radio frequency signal source in a monotone stepping mode, and determining the measurement result of the gear to be calibrated corresponding to each output frequency.
And 104, calibrating the gear to be calibrated under each output frequency according to the calibration data.
Therefore, according to the method for calibrating the path of the radio frequency signal source provided by the embodiment of the invention, the path gear of the radio frequency signal source is adjusted to the gear to be calibrated, then the output frequency of the radio frequency signal source is adjusted in a monotone stepping mode under the gear to be calibrated, and the measurement result of the gear to be calibrated corresponding to each output frequency is determined, so that the calibration data of the gear to be calibrated under each output frequency is determined according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency, and the calibration of the gear to be calibrated under each output frequency is completed. Instead of selecting the output frequency first and then switching the channel gear of the radio frequency signal source frequently to complete the channel calibration, the problem that the stabilization time required by the radio frequency signal source is increased due to frequent switching of the channel gear is solved, the stabilization time required by the radio frequency signal source is greatly shortened, and the channel calibration efficiency of the radio frequency signal source is improved.
That is, in the embodiment of the present invention, the machine settling time is commonly required to be: the t × 3 is 3t, which can greatly shorten the stabilization time required by the radio frequency signal source and improve the efficiency of the path calibration of the radio frequency signal source.
In order to make those skilled in the art better understand the present invention, a more detailed embodiment is listed below, and as shown in fig. 2, an embodiment of the present invention provides a method for calibrating a path of a radio frequency signal source, including:
In the embodiment of the present invention, the radio frequency signal source may be a radio frequency signal source with a model number of DSG3120 as an example. As shown in fig. 3, the DSG3120 rf signal source 31 is connected to the spectrometer 32 via a signal line.
And 202, adjusting the access gear of the radio frequency signal source to the through access gear.
And 203, adjusting the output frequency of the radio frequency signal source from a preset first preset frequency to a second preset frequency in a monotone stepping mode under the through passage gear, and acquiring through measurement results corresponding to the output frequencies through the frequency spectrograph.
Here, the monotone step-by-step method refers to adjusting the output frequency of the rf signal source from a preset first preset frequency to a second preset frequency with a preset increasing frequency, and obtaining a through measurement result corresponding to the output frequency after each increasing through measurement by the spectrometer. For example, the preset increment frequency is 50MHz, the preset first preset frequency is 6GHz, and the second preset frequency is 12 GHz. Then starting at 6GHz, each time 50MHz is gradually incremented until 12GHz is adjusted, for a total of 120 output frequencies. Through reading the output data of the frequency spectrograph, the through measurement result corresponding to each output frequency can be obtained. The pass-through measurement is used as a reference value to determine subsequent calibration data. The cut-through measurement result may be denoted as Path _ Meas.
And 204, adjusting the channel gear of the radio frequency signal source to an amplification channel gear.
And step 205, under the amplification channel gear, adjusting the output frequency of the radio frequency signal source from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and obtaining the measurement result of the amplification channel gear corresponding to each output frequency through the frequency spectrograph.
Similarly, the monotonic stepping mode here refers to adjusting the output frequency of the rf signal source from a preset first preset frequency to a second preset frequency with a preset increasing frequency, and obtaining the measurement result of the amplification path gear corresponding to the output frequency after each increment through the spectrometer. For example, the preset increment frequency is 50MHz, the preset first preset frequency is 6GHz, and the second preset frequency is 12 GHz. Then starting at 6GHz, each time 50MHz is gradually incremented until 12GHz is adjusted, for a total of 120 output frequencies. The measurement result of the amplification channel gear corresponding to each output frequency can be obtained by reading the output data of the frequency spectrograph. The measurement result of the amplification path gear here may be denoted as Amp _ Meas.
And step 206, determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the through measurement result corresponding to each output frequency.
Calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency. Here, the output frequencies need to correspond to each other, for example, the above 120 output frequencies, and if calibration data of the amplifier path tap position at 12GHz needs to be obtained, a measurement result of the amplifier path tap position at 12GHz and a through measurement result at 12GHz need to be selected.
And step 207, calibrating the amplification channel gear at each output frequency according to the calibration data of the amplification channel gear at each output frequency.
And 208, adjusting the channel gear of the radio frequency signal source to an attenuation channel gear.
Here, a plurality of damping path steps, each of which requires a subsequent step, need to be calibrated. The way of adjusting the channel shift of the radio frequency signal source to an attenuation channel shift here is: and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear. For example, if the preset step unit is 5 damping units, the first preset damping path gear is damping path gear 5, and the second preset damping path gear is damping path gear 100, there are 20 damping path gears.
Similarly, the monotone step-by-step manner here refers to adjusting the output frequency of the rf signal source from a preset first preset frequency to a second preset frequency with a preset increasing frequency, and obtaining the measurement result of the attenuation path gear corresponding to the output frequency after each increasing through the spectrometer. For example, the preset increment frequency is 50MHz, the preset first preset frequency is 6GHz, and the second preset frequency is 12 GHz. Then starting at 6GHz, each time 50MHz is gradually incremented until 12GHz is adjusted, for a total of 120 output frequencies. The measurement result of the attenuation path gear corresponding to each output frequency can be obtained by reading the output data of the frequency spectrograph. The measurement of the damping path gear here may be denoted Att _ Meas.
And step 210, determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the through measurement result corresponding to each output frequency.
The calibration data of the attenuation path gear at each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency. Here, the output frequencies need to be in one-to-one correspondence, for example, the above 120 output frequencies, and if calibration data of a certain attenuation path gear at 12GHz needs to be obtained, a measurement result of the attenuation path gear at 12GHz and a through measurement result at 12GHz of the attenuation path gear need to be selected.
And step 211, calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
After completing the calibration of one attenuation path tap at each output frequency in step 211, the process may return to step 208 until all attenuation path taps have been calibrated at each output frequency.
Therefore, according to the method for calibrating the path of the radio frequency signal source provided by the embodiment of the invention, the path gear of the radio frequency signal source is adjusted to the gear to be calibrated, then the output frequency of the radio frequency signal source is adjusted in a monotone stepping mode under the gear to be calibrated, and the measurement result of the gear to be calibrated corresponding to each output frequency is determined, so that the calibration data of the gear to be calibrated under each output frequency is determined according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency, and the calibration of the gear to be calibrated under each output frequency is completed. Instead of selecting the output frequency first and then switching the channel gear of the radio frequency signal source frequently to complete the channel calibration, the problem that the stabilization time required by the radio frequency signal source is increased due to frequent switching of the channel gear is solved, the stabilization time required by the radio frequency signal source is greatly shortened, and the channel calibration efficiency of the radio frequency signal source is improved.
Corresponding to the method embodiments shown in fig. 1 and fig. 2, as shown in fig. 4, an embodiment of the present invention provides a path calibration apparatus for a radio frequency signal source, including:
and the access gear adjusting unit 41 is used for adjusting the access gear of the radio frequency signal source to the gear to be calibrated.
And the output frequency adjusting unit 42 is configured to adjust the output frequency of the radio frequency signal source in a monotonic stepping manner under the gear to be calibrated, and determine a measurement result of the gear to be calibrated corresponding to each output frequency.
And a calibration data determining unit 43, configured to determine calibration data of the gear to be calibrated at each output frequency according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency.
And the calibration unit 44 is configured to calibrate the gear to be calibrated at each output frequency according to the calibration data.
Specifically, the output end of the radio frequency signal source may be connected to an input end of a frequency spectrometer.
The access gear adjusting unit 41 is further configured to adjust an access gear of the radio frequency signal source to a through access gear.
The output frequency adjusting unit 42 is further configured to adjust the output frequency of the radio frequency signal source from a preset first preset frequency to a preset second preset frequency in a monotonic stepping manner in the through-path gear, and obtain through-measurement results corresponding to the output frequencies through the frequency spectrograph.
Specifically, the shift positions to be calibrated in the path shift position adjustment unit 41 include amplification path shift positions and attenuation path shift positions.
In addition, the output frequency adjusting unit 42 is specifically configured to:
under the amplification channel gear, the output frequency of the radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measurement result of the amplification channel gear corresponding to each output frequency is obtained through the frequency spectrograph.
In addition, the calibration data determining unit 43 is specifically configured to:
determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the direct-connection measurement result corresponding to each output frequency; calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Furthermore, the calibration unit 44 is specifically configured to:
and calibrating the amplification path gear at each output frequency according to the calibration data of the amplification path gear at each output frequency.
Furthermore, the path gear adjusting unit 41 is specifically configured to:
and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear.
Furthermore, the output frequency adjusting unit 42 is specifically configured to:
under a damping passage gear, the output frequency of a radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measuring result of the damping passage gear corresponding to each output frequency is obtained through the frequency spectrograph.
Furthermore, the calibration data determining unit 43 is specifically configured to:
determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the straight-through measurement result corresponding to each output frequency; calibration data of the attenuation path gear under each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
Furthermore, the calibration unit 44 is specifically configured to:
and calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
It should be noted that, for a specific implementation manner of the path calibration apparatus for a radio frequency signal source according to the embodiment of the present invention, reference may be made to the method embodiments corresponding to fig. 1 and fig. 2, which are not described herein again.
The embodiment of the invention provides a path calibration device of a radio frequency signal source, which is characterized in that a path gear of the radio frequency signal source is adjusted to a gear to be calibrated firstly, then the output frequency of the radio frequency signal source is adjusted in a monotone stepping mode under the gear to be calibrated, and the measurement result of the gear to be calibrated corresponding to each output frequency is determined, so that calibration data of the gear to be calibrated under each output frequency is determined according to the measurement result of the gear to be calibrated corresponding to each output frequency and the direct measurement result corresponding to each output frequency, and the calibration of the gear to be calibrated under each output frequency is completed. Instead of selecting the output frequency first and then switching the channel gear of the radio frequency signal source frequently to complete the channel calibration, the problem that the stabilization time required by the radio frequency signal source is increased due to frequent switching of the channel gear is solved, the stabilization time required by the radio frequency signal source is greatly shortened, and the channel calibration efficiency of the radio frequency signal source is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (18)
1. A method for calibrating a channel of a radio frequency signal source, comprising:
adjusting a passage gear of a radio frequency signal source to a gear to be calibrated;
under the gear to be calibrated, adjusting the output frequency of the radio frequency signal source in a monotone stepping mode, and determining the measurement result of the gear to be calibrated corresponding to each output frequency;
determining calibration data of the gear to be calibrated under each output frequency according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency;
calibrating the gears to be calibrated under each output frequency according to the calibration data;
the gear to be calibrated comprises an amplification passage gear and each attenuation passage gear.
2. The method according to claim 1, wherein the output terminal of the rf signal source is connected to an input terminal of a spectrometer;
the path calibration method of the radio frequency signal source further comprises the following steps:
adjusting a channel gear of the radio frequency signal source to a straight-through channel gear;
and under the through passage gear, adjusting the output frequency of the radio frequency signal source from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and acquiring through measurement results corresponding to the output frequencies through the frequency spectrograph.
3. The method for calibrating the path of the rf signal source according to claim 1, wherein the step of determining the measurement result of the to-be-calibrated stage corresponding to each output frequency by adjusting the output frequency of the rf signal source in a monotone step manner under the to-be-calibrated stage comprises:
under the amplification channel gear, the output frequency of the radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measurement result of the amplification channel gear corresponding to each output frequency is obtained through a frequency spectrograph.
4. The method for calibrating the path of the rf signal source according to claim 3, wherein determining the calibration data of the to-be-calibrated tap under each output frequency according to the measurement result of the to-be-calibrated tap corresponding to each output frequency and the through measurement result corresponding to each output frequency comprises:
determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the direct-connection measurement result corresponding to each output frequency; calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
5. The method for calibrating the path of the rf signal source according to claim 4, wherein calibrating the to-be-calibrated stage at each output frequency according to the calibration data comprises:
and calibrating the amplification path gear at each output frequency according to the calibration data of the amplification path gear at each output frequency.
6. The method for calibrating the path of the rf signal source according to claim 1, wherein adjusting the path shift of the rf signal source to the shift to be calibrated comprises:
and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear.
7. The method for calibrating the path of the rf signal source according to claim 6, wherein the step of determining the measurement result of the to-be-calibrated stage corresponding to each output frequency by adjusting the output frequency of the rf signal source in a monotone step manner under the to-be-calibrated stage comprises:
under a damping passage gear, the output frequency of a radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and a measurement result of the damping passage gear corresponding to each output frequency is obtained through a frequency spectrograph.
8. The method for calibrating the path of the rf signal source according to claim 7, wherein determining the calibration data of the to-be-calibrated tap under each output frequency according to the measurement result of the to-be-calibrated tap corresponding to each output frequency and the through measurement result corresponding to each output frequency comprises:
determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the straight-through measurement result corresponding to each output frequency; calibration data of the attenuation path gear under each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
9. The method for calibrating the path of the rf signal source according to claim 8, wherein calibrating the to-be-calibrated stage at each output frequency according to the calibration data comprises:
and calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
10. An apparatus for calibrating a path of a radio frequency signal source, comprising:
the access gear adjusting unit is used for adjusting an access gear of the radio frequency signal source to a gear to be calibrated;
the output frequency adjusting unit is used for adjusting the output frequency of the radio frequency signal source in a monotone stepping mode under the gear to be calibrated and determining the measuring result of the gear to be calibrated corresponding to each output frequency;
the calibration data determining unit is used for determining calibration data of the gear to be calibrated under each output frequency according to the measurement result of the gear to be calibrated corresponding to each output frequency and the through measurement result corresponding to each output frequency;
the calibration unit is used for calibrating the gears to be calibrated under each output frequency according to the calibration data;
the gear to be calibrated in the passage gear adjusting unit comprises an amplification passage gear and each attenuation passage gear.
11. The apparatus according to claim 10, wherein the output terminal of the rf signal source is connected to an input terminal of a spectrometer;
the access gear adjusting unit is also used for adjusting an access gear of the radio frequency signal source to a through access gear;
the output frequency adjusting unit is further configured to adjust the output frequency of the radio frequency signal source from a preset first preset frequency to a preset second preset frequency in a monotonic stepping manner in the through-path gear, and obtain through-measurement results corresponding to the output frequencies through the frequency spectrograph.
12. The apparatus according to claim 11, wherein the output frequency adjusting unit is specifically configured to:
under the amplification channel gear, the output frequency of the radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measurement result of the amplification channel gear corresponding to each output frequency is obtained through the frequency spectrograph.
13. The apparatus for calibrating a path of a radio frequency signal source according to claim 12, wherein the calibration data determining unit is specifically configured to:
determining calibration data of the amplification path gear under each output frequency according to the measurement result of the amplification path gear corresponding to each output frequency and the direct-connection measurement result corresponding to each output frequency; calibration data of the amplification channel gear at each output frequency is F-A-P; wherein, F is the calibration data of the amplification channel gear under an output frequency; a is the measurement result of the amplification channel gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
14. The apparatus according to claim 13, wherein the calibration unit is specifically configured to:
and calibrating the amplification path gear at each output frequency according to the calibration data of the amplification path gear at each output frequency.
15. The apparatus for calibrating a path of a radio frequency signal source according to claim 11, wherein the path-level adjusting unit is specifically configured to:
and adjusting the channel gear of the radio frequency signal source from the first preset attenuation channel gear by a preset stepping unit until the channel gear reaches the second preset attenuation channel gear.
16. The apparatus for calibrating a path of a radio frequency signal source according to claim 15, wherein the output frequency adjusting unit is specifically configured to:
under a damping passage gear, the output frequency of a radio frequency signal source is adjusted from a preset first preset frequency to a second preset frequency in a monotone stepping mode, and the measuring result of the damping passage gear corresponding to each output frequency is obtained through the frequency spectrograph.
17. The apparatus of claim 16, wherein the calibration data determining unit is specifically configured to:
determining calibration data of the attenuation path gear under each output frequency according to the measurement result of the attenuation path gear corresponding to each output frequency and the straight-through measurement result corresponding to each output frequency; calibration data of the attenuation path gear under each output frequency is S-P-T; wherein S is calibration data of the attenuation path gear under an output frequency; t is the measurement result of the attenuation path gear under the corresponding output frequency; p is the through measurement at the corresponding output frequency.
18. The apparatus according to claim 17, wherein the calibration unit is specifically configured to:
and calibrating the attenuation path gear at each output frequency according to the calibration data of the attenuation path gear at each output frequency.
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| CN113093081B (en) * | 2021-06-09 | 2021-08-17 | 深圳市鼎阳科技股份有限公司 | Calibration and PV method for spectrum analyzer and production system |
| CN115350401B (en) * | 2022-09-09 | 2024-05-28 | 深圳市宗匠科技有限公司 | Gear switching method, cosmetic instrument and computer readable storage medium |
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