AU2020102950A4 - A RF Power Calibration Method and Calibrator - Google Patents
A RF Power Calibration Method and Calibrator Download PDFInfo
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- AU2020102950A4 AU2020102950A4 AU2020102950A AU2020102950A AU2020102950A4 AU 2020102950 A4 AU2020102950 A4 AU 2020102950A4 AU 2020102950 A AU2020102950 A AU 2020102950A AU 2020102950 A AU2020102950 A AU 2020102950A AU 2020102950 A4 AU2020102950 A4 AU 2020102950A4
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- Prior art keywords
- power
- carrier
- calibrator
- detected
- measurement value
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000004364 calculation method Methods 0.000 claims abstract description 11
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- H04B5/77—
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
-
- H04B5/73—
Abstract
The invention relates to a radiofrequency (RF) power calibration method and calibrator.
The calibration method includes: Si, configuration of the RF parameters including carrier gain
of the radiofrequency device to be detected, and control of the RF device to be detected to
transmit a set of carrier RF signals with preset power through the RF power calibrator; S2,
control of the power detection device to detect the carrier RF signal radio through the RF power
calibrator; S3, obtaining of the first measurement value converted from the carrier RF signal
of the RF device to be detected, and the second measurement value of the carrier RF signal
detected from the power detection device; S4, calculation of the calibration coefficient of the
RF power according to the carrier gain, the first measurement value and the second
measurement value. Compared with the prior art, the invention can detect and obtain multiple
sets of calibration data in a short time, achieve the effect of rapid calibration, and improve the
calibration efficiency, which not only avoids the errors caused by human factors in manual
calibration process, but also enables the calibration process to be accurate and fast.
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Figure 2
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15 152
Figure 3
Description
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Figure 2
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Figure 3
A RF Power Calibration Method and Calibrator
The invention relates to the technical field of radio communication, in particular to a RF power calibration method and calibrator.
The radio frequency identification (RFID) tester is widely used in the R&D, production and testing of RFID card. The RFID tester includes RFID transmitter and RFID receiver. The transmitter transmits the required RFID signal, the RFID card receives the RFID signal, decodes it and then sends it back. The RF tester then receives the signal sent back by the RFID card and demodulates it correctly. Therefore, whether the RFID tester is accurate and reliable plays an import role in the test of RFID card.
The existing RF power calibration device has the following disadvantages:
1. In order to guarantee the accuracy of the RF power, manual calibration of RF device is commonly applied at present. The calibration of RF power is achieved by recording the pair gain value and the value of carrier RF signal transmitted from the antenna port of RF device, calculating two calibration coefficients according to the formula, and then writing the value of calibration coefficient into the register of RF device. In this way, the accuracy of RF power can be guaranteed to a certain extent. This method is carried out manually, which makes the whole process cumbersome. And it is easy to go wrong due to manual operation and the efficiency is low.
2. In addition, the RF power calibration device needs to be plugged when in application, but the dust inside the socket will affect the measurement accuracy, and the RF power calibration device will be affected by external electromagnetic factors, which makes the test data inaccurate, enlarges the error and affects the calibration efficiency.
The purpose of the invention is to provide a RF power calibration method and calibrator in order to overcome the defects of the prior art.
The purpose of the invention can be realized with the following technical scheme:
A RF power calibration method, including the following steps:
S1, configuration of the RF parameters including carrier gain of the radiofrequency device to be detected, and control of the RF device to be detected to transmit a set of carrier RF signals with preset power through the RF power calibrator;
S2, control of the power detection device to detect the carrier RF signal radio through the RF power calibrator;
S3, obtaining of the first measurement value converted from the carrier RF signal of the RF device to be detected, and the second measurement value of the carrier RF signal detected from the power detection device;
S4, calculation of the calibration coefficient of the RF power according to the carrier gain, the first measurement value and the second measurement value.
Preferably, multiple power calibration coefficients are obtained by repeating the steps Si to S4.
Preferably, the power detection device is the microwave power meter.
A RF power calibrator by applying the RF power calibration method, including the RF power calibrator body. The RF power calibrator body is equipped with the displayer, the button, the switch button and the plug panel, which are characterized in that the RF power calibrator body is set with the calculation module, the control module, the acquisition module and the upload module. The output ends of the control module, the acquisition module and the upload module respectively transmit data with the input end of the calculation module.
Preferably, the plug panel is equipped with a plurality of sockets, which are uniformly distributed on the plug panel, and the plug panel is equipped with the panel sealing cover for opening and closing.
Preferably, the external sleeve of the RF power calibrator body is equipped with the rubber protective jacket. The rubber protective jacket is detachably connected with the RF power calibrator body.
Preferably, the rubber protective jacket is equipped with the shielding net inside. The shielding net covers to the external part of the RF power calibrator body.
Compared with the prior art, the invention has the following advantages:
1. Multiple sets of calibration data can be detected in the short time, which can achieve rapid calibration effect and improve calibration efficiency. It can not only avoid errors caused by human factors in manual calibration process, but also make the calibration process accurate and fast.
2. The rubber protective jacket protects the body shell of the RF power calibrator and provides collision buffering without great impact.
3. The rubber protective jacket is equipped with the shielding net, which can shield the chaotic external signal to improve the calibration accuracy.
4. After the application is completed, the panel sealing cover can be put on the plug panel for sealing the socket, which can prevent the reduction of measuring precision caused by external dust debris entering the socket.
Figure 1 shows the schematic diagram of the RF power calibration method in the invention;
Figure 2 shows the structural diagram of the RF power calibrator in the invention;
Figure 3 shows the structural diagram of the plug panel in the invention.
where: 1, RF power calibrator body; 11, rubber protective jacket; 12, displayer; 13, button; 14, switch button; 15, plug panel; 151, panel sealing cover; 152, socket.
The invention will now be described in detail with reference to the accompanying figures and the specific embodiment. The embodiment is implemented on the premise of the technical scheme of the invention with detailed implementation process and specific operation procedures, but the scope of protection of the invention is not limited to the following embodiment.
As shown in Figure 1, this application proposes a RF power calibration method, including the following steps:
Si, configuration of the RF parameters including carrier gain of the RF device to be detected through the automatic power calibration software, and configuration of the parameters of the power detection device, therefore achieving the preset of the transmission power of the RF device to be detected, and controlling the accurate reception of the carrier RF signal by the power detection device;
A set of carrier RF signal with preset power is transmitted by controlling the RF device to be detected with the RF power calibrator.
S2, the RF power calibrator sends the detection command to the power detection device to control the power detection device to detect the carrier RF signal;
S3, obtaining of the first measurement value converted from the carrier RF signal of the RF device to be detected, and the second measurement value of the carrier RF signal detected from the power detection device;
S4, calculation of the calibration coefficient of the RF power according to the carrier gain, the first measurement value and the second measurement value.
Steps S Ito S4 are cycled many times to obtain multiple power calibration coefficients. The RF power calibration is verified whether successful or not based on multiple measurements in the same set, if so, the calibration process is terminated; if not, the failing instruction is sent and whether to re-calibrate RF power should be chosen.
As shown in Figure 2, this application also proposes a RF power calibrator using the above-mentioned RF power calibration method, including the RF power calibrator body 1. The front surface of the RF power calibrator body 1 is equipped with the fixedly connected displayer 12, which is electrically connected with the external power supply. The front surface of the RF power calibrator body 1 is also provided with the fixed connection button 13 and the switch button 14, and the displayer 12 is electrically connected with the switch button 14. The rear wall of the RF power calibrator body 1 is equipped with the plug panel 15.
The RF power calibrator body is equipped with the calculation module, the control module, the acquisition module and the upload module. The output ends of the control module, the acquisition module and the upload module respectively transmit data with the input end of the calculation module.
The plug panel 15 is equipped with a plurality of sockets 152, which is 4 in this embodiment, and evenly distributed on the plug panel 15. The external part of the plug panel 15 is also provided with the panel sealing cover 151 for opening and closing. In this embodiment, the panel sealing cover 151 can be rotatably connected with the plug panel 15. After operation is completed, the panel sealing cover 151 can be covered on the plug panel 15 for sealing the socket 152, which can prevent external dust and debris from entering the socket 152, resulting in low accuracy of measurement.
The external sleeve of the RF power calibrator body 1 is equipped with the rubber protective jacket 11. The rubber protective jacket 11 is detachably connected with the RF power calibrator body 1. The rubber protective jacket 11 is equipped with the shielding net inside. The shielding net covers to the external part of the RF power calibrator body 1. By installing rubber protective jacket 11 with shielding net on the external part of RF power calibrator body 1, the body shell of RF power calibrator 1 could be protected by rubber protective jacket 11, and the collision buffer can be provided, which will avoid great impact, and the external clutter signal can be shielded through shielding network to improve the calibration accuracy.
On the one hand, the RF power calibrator is applied to send control commands to the RF device to be detected to control the work of the RF device, to configure the internal work parameters of the RIF device to be detected, and to read the working data of the RF device. On the other hand, the RF power calibrator is also used to send detection commands to the power detection device and to read the detection data of the power detection device. Among them, the RF power device might be the PC equipped with automatic RIF power calibration software; The power detection device might be the microwave power meter. The power supply provides 220V AC power supply for PC and the microwave power meter, and 12V DC power supply for the RIF device to be detected.
Working principle and operation flow of the RF power calibrator:
When the RIF power calibrator is installed, firstly the automatic power calibration software will communicate with the RF device to be detected by means of the USB bus to configure the RIF parameters of the RIF device to be detected; then the parameters of the microwave power meter are configured through the serial port by controlling the microwave power meter for communication; and then the automatic RF power calibration is enabled, the carrier gain value of the RIF device to be detected is set through the USB with automatic power calibration software, and the RIF deice is enabled to be detected to transmit the carrier signal. When the carrier signal is stable, the automatic power calibration software will send commands to read the carrier RIF signal value through the serial port to the microwave power meter; Then the measurement value of the carrier signal is read by automatic conversion through the analog-digital converter of the RF device to be detected; The cycle is repeated for several times to record multiple sets of carrier gain value of the RIF device to be detected, the carrier RIF signal value read by the microwave power meter, and the measurement value converted from the carrier RIF signal by the analog-digital converter of the RIF device to be detected; Two calibration coefficients are acquired by the automatic power calibration software on the basis of these sets of data in a certain algorithm, and then the two calibration coefficients are written in relevant register of the RIF device to be detected to complete the power calibration.
Claims (7)
1. A RF power calibration method, which is characterized in that it includes the following steps:
S1, configuration of the RF parameters including carrier gain of the RF device to be detected, and control of the RF device to be detected to transmit a set of carrier RF signals with preset power
through the RF power calibrator;
S2, control of the power detection device to detect the carrier RF signal radio through the RF
power calibrator;
S3, obtaining of the first measurement value converted from the carrier RF signal of the RF
device to be detected, and the second measurement value of the carrier RF signal detected from the
power detection device;
S4, calculation of the calibration coefficient of the RF power according to the carrier gain, the
first measurement value and the second measurement value.
2. A RF power calibration method, as described in Claim 1, is characterized in that multiple
power calibration coefficients are obtained by repeating the steps Si to S4.
3. A RF power calibration method, as described in Claim 1, is characterized in that the power
detection device is the microwave power meter.
4. A RF power calibrator by applying the RF power calibration method as described in any of
Claims 1 to 3, including the RF power calibrator body (1). The RF power calibrator body (1) is
equipped with the displayer (12), the button (13), the switch button (14) and the plug panel (15), which are characterized in that the RF power calibrator body (1) is set with the calculation module,
the control module, the acquisition module and the upload module. The output ends of the control
module, the acquisition module and the upload module respectively transmit data with the input end
of the calculation module.
5. A RF power calibrator, as described in Claim 4, is characterized in that the plug panel (15)
is equipped with a plurality of sockets (152), which are uniformly distributed on the plug panel (15), and the plug panel (15) is equipped with the panel sealing cover (151) for opening and closing.
6. A RF power calibrator, as described in Claim 4, is characterized in that the external sleeve
of the RF power calibrator body (1) is equipped with the rubber protective jacket (11). The rubber protective jacket (11) is detachably connected with the RF power calibrator body (1).
7. A RF power calibrator, as described in Claim 4, is characterized in that the rubber protective jacket (11) is equipped with the shielding net inside. The shielding net covers to the external part of
the RF power calibrator body (1).
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Control of the RF device to be detected to transmit a set of carrier RF signals.
Control of the RF device to be detected to transmit the carrier RF signal.
Obtaining of the first measurement value converted from the carrier RF signal of the RF device to be detected, and the second measurement value detected from the first carrier RF signal from the power detection device.
Calculation of the calibration coefficient of the RF power according to the first measurement value and the second measurement value.
Figure 1
-2/2- 22 Oct 2020 2020102950
Figure 2
Figure 3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102950A AU2020102950A4 (en) | 2020-10-22 | 2020-10-22 | A RF Power Calibration Method and Calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2020102950A AU2020102950A4 (en) | 2020-10-22 | 2020-10-22 | A RF Power Calibration Method and Calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2020102950A4 true AU2020102950A4 (en) | 2020-12-24 |
Family
ID=73838735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2020102950A Ceased AU2020102950A4 (en) | 2020-10-22 | 2020-10-22 | A RF Power Calibration Method and Calibrator |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2020102950A4 (en) |
-
2020
- 2020-10-22 AU AU2020102950A patent/AU2020102950A4/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |