CN115396045A - Broadband intermodulation power device and calibration system thereof - Google Patents

Broadband intermodulation power device and calibration system thereof Download PDF

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Publication number
CN115396045A
CN115396045A CN202211071844.6A CN202211071844A CN115396045A CN 115396045 A CN115396045 A CN 115396045A CN 202211071844 A CN202211071844 A CN 202211071844A CN 115396045 A CN115396045 A CN 115396045A
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module
broadband
intermodulation
power
calibration
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吴雪
唐静
郭懿
熊燕
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Nanjing Rflight Communication Electronic Corp
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Nanjing Rflight Communication Electronic Corp
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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
    • 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
    • H04B1/40—Circuits
    • 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
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity
    • 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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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
  • Transceivers (AREA)

Abstract

The invention provides a broadband intermodulation power device and a calibration system thereof, wherein the broadband intermodulation power device comprises a signal control transceiving module, a broadband power amplification module, a combiner module, a power load module and a passive module unit; the broadband signal source of the signal control transceiving module adopts a high-precision low-phase-noise broadband signal source, and the coverage frequency range of the broadband signal source is 3GHz to 6GHz; and the working frequency range of the broadband power amplification module is 3GHz to 6GHz. The broadband intermodulation power device can meet intermodulation test requirements in frequency bands of 3000MHz to 6000MHz, and is stable in performance, low in power consumption, simple and convenient to operate, and convenient to flexibly combine and expand. The broadband intermodulation power device calibration system calibrates the intermodulation power device by adopting a broadband calibration and/or compensation calibration mode, and the broadband intermodulation power device calibration system is high in test precision.

Description

Broadband intermodulation power device and calibration system thereof
Technical Field
The invention belongs to the technical field of intermodulation power, and particularly relates to a broadband intermodulation power device and a calibration system thereof.
Background
The common intermodulation test system is only suitable for narrow-band intermodulation test, the coverage bandwidth is at most hundreds of megabytes, and a user can only purchase an intermodulation power device of a corresponding frequency band for many times according to the test requirement, so that the purchase period is long, the cost is high, and the test convenience is influenced; self calibration cannot be carried out, the accuracy requirement of data cannot be guaranteed, and the obtained test value result is inaccurate.
Disclosure of Invention
The present invention is directed to solve at least one of the problems of the prior art, and provides a wideband intermodulation power device and a calibration system thereof.
In one aspect of the present invention, a wideband intermodulation power device is provided, which includes a signal control transceiver module, a wideband power amplifier module, a combiner module, a power load module and a passive module unit;
the first output end of the signal control transceiving module is connected with the first input end of the broadband power amplification module, and the second output end of the signal control transceiving module is connected with the second input end of the broadband power amplification module;
a first output end of the broadband power amplifier module is connected with a first input end of the combining module, and a second output end of the broadband power amplifier module is connected with a second input end of the combining module;
the first output end of the combining module is connected with the input end of the passive module unit, the second output end of the combining module is connected with the power load module, and the first output end of the passive module unit is connected with the input end of the signal control transceiving module; wherein the content of the first and second substances,
the broadband signal source of the signal control transceiving module adopts a high-precision low-phase-noise broadband signal source, and the coverage frequency range of the broadband signal source is 3GHz to 6GHz; and the working frequency range of the broadband power amplification module is 3GHz to 6GHz.
Optionally, the passive module unit includes a low intermodulation duplexer module and at least one expansion passive module;
the input end of the expansion passive module is connected with a TX channel of the low intermodulation duplexer module, an ANT port of the low intermodulation duplexer module is used for connecting a tested piece, and an RX channel of the low intermodulation duplexer module is connected with the input end of the signal control transceiver module.
Optionally, the passive module unit includes a plurality of extended passive modules;
and the input ends of the plurality of extension passive modules are selectively connected with the TX channel of the low-intermodulation duplexer module so as to customize the transmitting and receiving frequency bands of the passive module units in the working frequency band range.
Optionally, a broadband coupler is disposed in the broadband power amplifier module, and an output end of the broadband coupler is electrically connected to the signal control transceiver module.
Optionally, the signal control transceiver module further includes a first broadband signal source, a second broadband signal source, a control sub-module, and an intermodulation analysis sub-module;
the output end of the first broadband signal source is connected with the first input end of the broadband power amplification module, and the output end of the second broadband signal source is connected with the second input end of the broadband power amplification module;
the control submodule is electrically connected with the output end of the broadband coupler;
the intermodulation analysis sub-module is electrically connected with an RX channel of the low intermodulation duplexer module.
In another aspect of the present invention, a wideband intermodulation power device calibration system is provided, the calibration system comprising the intermodulation power device as described above, the calibration system using wideband calibration and/or compensation calibration to calibrate the intermodulation power device.
Optionally, the broadband calibration mode is broadband power calibration, and the calibration system further includes a first attenuator, a first power meter, a first display, and a first standard signal source;
a first output end of the combining module is connected with an input end of the first attenuator, an output end of the first attenuator is connected with the first power meter, and the first power meter is connected with the first display;
the first standard signal source is connected with a first input end of the broadband power amplifier module.
Optionally, the broadband calibration mode is broadband receiving calibration, and the calibration system further includes a local oscillator signal source and a second standard signal source;
the second standard signal source is connected with a PIM control port of the signal control receiving and transmitting module, and the local oscillator signal source is connected with an LO port of the signal control receiving and transmitting module.
Optionally, the compensation calibration mode is compensation power calibration, and the calibration system further includes a second attenuator, a second power meter, and a second display;
and a second output end of the passive module unit is connected with an input end of the second attenuator, an output end of the second attenuator is connected with the second power meter, and the second power meter is connected with the second display.
Optionally, the compensation calibration mode is compensation receiving calibration, and the calibration system further includes a third standard signal source;
and the third standard signal source is connected with the second output end of the passive module unit and performs signal synchronization on the third standard signal source and the signal control transceiving module according to a preset megahertz value.
The broadband intermodulation power device can meet intermodulation test requirements in frequency bands of 3000MHz to 6000MHz, and is stable in performance, low in power consumption, simple and convenient to operate and convenient for flexible combination and expansion. The broadband intermodulation power device calibration system calibrates the broadband intermodulation power device by adopting a broadband calibration and/or compensation calibration mode, and the broadband intermodulation power device calibration system is high in test precision.
Drawings
Fig. 1 is a schematic structural diagram of a wideband intermodulation power device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a calibration system for a wideband intermodulation power device using a wideband power calibration method according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a calibration system of a wideband intermodulation power device using a wideband reception calibration method according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a calibration system of a wideband intermodulation power device using a compensation power calibration method according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a calibration system of a wideband intermodulation power device using a compensation reception calibration method according to another embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail with reference to the accompanying drawings and the detailed description below.
As shown in fig. 1, a wideband intermodulation power device 100, the wideband intermodulation power device 100 includes a signal control transceiver module 110, a wideband power amplifier module 120, a combiner module 130, a power load module 140, and a passive module unit 150. The first output end of the signal control transceiver module 110 is connected to the first input end of the broadband power amplifier module 120, and the second output end of the signal control transceiver module 110 is connected to the second input end of the broadband power amplifier module 120. A first output terminal of the broadband power amplifier module 120 is connected to a first input terminal of the combining module 130, and a second output terminal of the broadband power amplifier module 120 is connected to a second input terminal of the combining module 130. A first output end of the combining module 130 is connected to an input end of the passive module unit 150, a second output end of the combining module 130 is connected to the power load module 140, and a first output end of the passive module unit 150 is connected to an input end of the signal control transceiver module 110. The broadband signal source of the signal control transceiver module 110 is a high-precision low-phase-noise broadband signal source, and the coverage frequency range is 3ghz to 6ghz. And the working frequency range of the broadband power amplification module 120 is 3GHz to 6GHz.
Specifically, as shown in fig. 1, the signal control transceiver module 110 includes a high-precision and low-phase-noise broadband signal source, and the coverage frequency is 3ghz to 6ghz. As an example, a 3060 signal source may be employed, whose output frequency range, output power, may be programmable. 3060 the output frequency of the signal source is between 1800MHz and 2700MH, the typical output power is 5dBm, a built-in 31.75dB programmable attenuator is arranged, and the stepping fraction is 0.1dB. The broadband power amplifier module 120 is implemented by adopting an all-solid-state scheme, wherein the working frequency ranges are 3GHz to 6GHz, the input voltage standing wave ratio is less than 1.5, the output power is more than or equal to 250W, the harmonic suppression is more than or equal to 30dBc, and the clutter suppression is more than or equal to 70 dBc. The broadband power amplifier module 120 has high gain, wide frequency band, low loss, high isolation and good consistency.
The combiner module 130 comprises a broadband high-power 3dB bridge, an operating frequency range of 1000 MHz-6000 MHz and a power tolerance of 300W. The power load module 140 corresponding to the combiner module supports 3000 MHz-8000 MHz and has power tolerance of 300W, and the power load module 140 is connected with an output terminal of the broadband high-power 3dB bridge of the combiner module 130.
Preferably, as shown in fig. 1, the signal control transceiver module 110 further includes a first broadband signal source, a second broadband signal source, a control sub-module, and an intermodulation analysis sub-module. The output end of the first broadband signal source is connected to the first input end of the broadband power amplifier module 120, and the output end of the second broadband signal source is connected to the second input end of the broadband power amplifier module 120. The control sub-module is electrically connected with the output end of the broadband coupler, and the intermodulation analysis sub-module is electrically connected with an RX channel of the low intermodulation duplexer module.
It should be noted that a broadband coupler is disposed in the broadband power amplifier module 120, and an output end of the broadband coupler is electrically connected to the signal control transceiver module 110. The signal control transceiver module 110 performs power detection, and the detected voltage signal is analyzed by the control sub-module.
It should be further noted that the passive module unit 150 includes a low intermodulation duplexer module 151 and at least one extension passive module 152. The input end of the extended passive module 152 is connected to the TX channel of the low intermodulation duplexer module 151, the ANT port of the low intermodulation duplexer module 151 is used for connecting to the tested piece, and the RX channel of the low intermodulation duplexer module 151 is connected to the input end of the signal control transceiver module 110. It is understood that the ANT port of the low intermodulation duplexer module 151 may be connected to the input port of the dut via the low intermodulation rf cable, and the intermodulation signal generated by the dut is transmitted to the intermodulation analysis sub-module in the signal control transceiver module 110 via the RX channel of the low intermodulation duplexer module 151.
It is further noted that the passive module unit 150 includes a plurality of extended passive modules 152. The input terminals of the extension passive modules 152 are selectively connected to the TX channels of the low intermodulation duplexer module 151, so as to customize the transmitting and receiving frequency bands of the passive module unit 150 in the operating frequency band range. For example, the passive module unit 150 may be expanded to 3500 MHz frequency band passive module unit 150, 4900 MHz frequency band passive module unit 150, etc., the test mode of the passive module unit 150 may also be customized as required, and the passive module unit 150 supports a reflection transmission mode, a double reflection transmission mode, and a combined double reflection and reflection transmission mode. The passive module unit 150 thus configured can realize plug and play function of the passive module unit 150 through a plurality of extended passive modules 152, and can also be flexibly combined and extended to customize transmitting and receiving frequency bands according to test requirements.
The broadband intermodulation power device of the embodiment can meet intermodulation test requirements in frequency bands of 3000MHz to 6000MHz by controlling the transceiver module, the broadband power amplifier module, the combiner module, the power load module and the passive module unit through the set signal, and has the advantages of stable performance, low power consumption and simplicity and convenience in operation. And the range of multi-module plug and play and free combination working frequency bands can be realized, and flexible combination and expansion are facilitated.
In another aspect of the present invention, as shown in fig. 2 to 5, a calibration system 200 for a broadband intermodulation power device is provided, the calibration system 200 includes the intermodulation power device 100 described above, and the detailed structure of the intermodulation power device 100 may refer to the related descriptions, which are not repeated herein. The calibration system 200 calibrates the intermodulation power device 100 by using a wideband calibration and/or a compensation calibration.
The broadband intermodulation power device calibration system of the embodiment calibrates the broadband intermodulation power device by adopting a broadband calibration and compensation calibration mode, has high integration level and simple and convenient operation, can reduce the use cost of a user and has high test precision.
Illustratively, as shown in fig. 2, the broadband calibration manner is broadband power calibration, and the calibration system 200 further includes a first attenuator 211, a first power meter 212, a first display 213, and a first standard signal source 214. A first output end of the combining module 130 is connected to an input end of the first attenuator 211, an output end of the first attenuator 211 is connected to the first power meter 212, and the first power meter 212 is connected to the first display 213. The first standard signal source 214 is connected to a first input end of the broadband power amplifier module 120.
Specifically, as shown in fig. 2, the first output end of the combining module 130 is connected to the input end of the high power attenuator 211, the output end of the high power attenuator 211 is connected to the power meter 212, and the power meter 212 is connected to the PC calibration software 213 for power detection.
The first standard signal source 214 pushes the input end of the 1 st path of the wideband power amplifier module 120, and the output power of the 1 st path of the wideband power amplifier module 120 is transmitted to the output port of the 3dB bridge of the combining module 130, and power calibration is performed at the output port of the 3dB bridge. For example, the calibration step mode is 1MHz calibration, the first standard signal source 214 steps according to a frequency of 1MHz, and the power calibration range can be sequentially calibrated according to a range from minimum power to maximum power. The calibrated actual power is converted into an AD signal by the signal control transceiver module 110, and the AD signal is uploaded to the first display 213 for storage and display.
Illustratively, as shown in fig. 3, the broadband calibration manner is broadband reception calibration, and the calibration system 200 further includes a local oscillator signal source 221 and a second standard signal source 222. The local oscillator signal source 221 is connected to the LO port of the signal control transceiver module 110, and the second standard signal source 222 is connected to the PIM control port of the signal control transceiver module 110.
Specifically, as shown in fig. 3, the second standard signal source 222 is connected to the PIM control port of the signal control transceiver module 110, the synchronous local oscillator signal source 221 is connected to the LO port of the signal control transceiver module 110, and the second standard signal source 222 sends out a standard single-tone radio frequency signal, and after being processed and analyzed by the signal control transceiver module 110, the level analog signal is converted into a digital signal, and the digital signal is uploaded to the second PC calibration software for storage and display. As an example, the receiving calibration range is 3GHz to 6GHz, the frequency is calibrated by stepping 1MHz, and the calibration level range is-55 dBm to-130 dBm.
The broadband intermodulation power device calibration system of the embodiment adopts a broadband calibration mode, so that the frequency range of the passive module unit can be plug and play as long as the frequency range is within 3000MHz to 6000MHz, and the calibration of transmitted and received data is completed. The passive module unit removes the loss of the passive module unit and the loss of an external cable, and can automatically call out calibration data of an expanded frequency band.
Illustratively, as shown in fig. 4, the compensation calibration mode is compensation power calibration, and the calibration system 200 further includes a second attenuator 231, a second power meter 232, and a second display 233. A second output terminal of the passive module unit 150 is connected to an input terminal of the second attenuator 231, an output terminal of the second attenuator 231 is connected to the second power meter 232, and the second power meter 232 is connected to the second display 233.
Specifically, as shown in fig. 4, a first output end and a second output end of the signal control transceiver module 110 are respectively connected to a first input end and a second input end of the broadband power amplifier module 120, two output ports of the broadband power amplifier module 120 are combined by the 3dB electrical bridge in the combining module 130, and transmit power signals to a TX port of the passive module unit 150, where the power signals are transmitted to a second output end of the passive module unit 150 through a TX channel of the passive module unit 150, and output power is monitored at the second output end, and the second output end is connected to the high-power attenuator 231 and the power meter 232 for detection. The power value monitored by the power meter 232 is compared with the power value queried by the system for verification, and the power difference value is automatically compensated.
For example, the target value of the power software is 46dBm, the power value of the software is 46.5dBm by inquiring the power value when the broadband is calibrated, and the system can automatically compensate-0.5 dBm. The calibration system has power errors which are difficult to avoid, because the attenuation precision of the signal control unit and the linearity of the whole radio frequency link can cause the power errors of the system, if test data are corrected manually, under the condition of large data volume, the workload is large, the power data of each frequency point cannot be corrected accurately by manually repairing the data, and the power data in the using frequency band range are calibrated only in a compensation calibration mode.
Illustratively, as shown in fig. 5, the compensation calibration mode is compensation receiving calibration, and the calibration system 200 further includes a third standard signal source 241. The third standard signal source 241 is connected to the second output end of the passive module unit 150, and the third standard signal source 241 and the signal control transceiver module 110 perform signal synchronization according to a preset mhz value. The principle of the compensation receiving calibration method is the same as that of the compensation power calibration method, and will not be described herein repeatedly.
The broadband intermodulation power device calibration system of the embodiment can verify the accuracy and precision of the power and the received data obtained by the test port of the passive module unit when the broadband system is connected with the passive module unit by adopting a compensation calibration mode. Because the loss of the passive device can be generated by the extended passive module, the compensation calibration is to count the loss of the passive device into the value of the broadband calibration, the frequency band and the loss of the passive module unit are filled into the data of the broadband calibration by a user, and the loss of the extended passive module is deducted automatically by the system. And when the power query value and the target value have a precision difference value, the system can automatically adjust and compensate and record compensation data of the test frequency point.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present invention, and the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (10)

1. A broadband intermodulation power device is characterized by comprising a signal control transceiving module, a broadband power amplification module, a combiner module, a power load module and a passive module unit;
the first output end of the signal control transceiver module is connected with the first input end of the broadband power amplifier module, and the second output end of the signal control transceiver module is connected with the second input end of the broadband power amplifier module;
a first output end of the broadband power amplification module is connected with a first input end of the combining module, and a second output end of the broadband power amplification module is connected with a second input end of the combining module;
the first output end of the combining module is connected with the input end of the passive module unit, the second output end of the combining module is connected with the power load module, and the first output end of the passive module unit is connected with the input end of the signal control transceiving module; wherein the content of the first and second substances,
the broadband signal source of the signal control transceiving module adopts a high-precision low-phase-noise broadband signal source, and the coverage frequency range of the broadband signal source is 3GHz to 6GHz; and the working frequency range of the broadband power amplification module is 3GHz to 6GHz.
2. The broadband intermodulation power device of claim 1, wherein the passive module units comprise a low intermodulation duplexer module and at least one extension passive module;
the input end of the expansion passive module is connected with a TX channel of the low intermodulation duplexer module, an ANT port of the low intermodulation duplexer module is used for connecting a tested piece, and an RX channel of the low intermodulation duplexer module is connected with the input end of the signal control transceiver module.
3. The broadband intermodulation power device of claim 2 wherein the passive module unit comprises a plurality of extension passive modules;
and the input ends of the plurality of extension passive modules are selectively connected with the TX channel of the low-intermodulation duplexer module so as to customize the transmitting and receiving frequency bands of the passive module units in the working frequency band range.
4. The broadband intermodulation power device as claimed in any of claims 2 to 3, wherein the broadband power amplifier module is internally provided with a broadband coupler, and the output terminal of the broadband coupler is electrically connected with the signal control transceiver module.
5. The wideband intermodulation power device of claim 4, wherein the signal control transceiver module further comprises a first wideband signal source, a second wideband signal source, a control sub-module, and an intermodulation analysis sub-module;
the output end of the first broadband signal source is connected with the first input end of the broadband power amplification module, and the output end of the second broadband signal source is connected with the second input end of the broadband power amplification module;
the control submodule is electrically connected with the output end of the broadband coupler;
the intermodulation analysis sub-module is electrically connected with an RX channel of the low intermodulation duplexer module.
6. A wideband intermodulation power device calibration system comprising the intermodulation power device of any of claims 1-5, the calibration system employing wideband calibration and/or offset calibration to calibrate the intermodulation power device.
7. The wideband intermodulation power device calibration system of claim 6, wherein the wideband calibration mode is wideband power calibration, the calibration system further comprising a first attenuator, a first power meter, a first display, and a first standard signal source;
a first output end of the combining module is connected with an input end of the first attenuator, an output end of the first attenuator is connected with the first power meter, and the first power meter is connected with the first display;
the first standard signal source is connected with a first input end of the broadband power amplifier module.
8. The wideband intermodulation power device calibration system according to claim 6, wherein the wideband calibration mode is wideband receive calibration, the calibration system further comprising a local oscillator signal source and a second standard signal source;
the local oscillator signal source is connected with an LO port of the signal control transceiver module, and the second standard signal source is connected with a PIM control port of the signal control transceiver module.
9. The wideband intermodulation power device calibration system of any of claims 6-8 wherein the compensation calibration is a compensation power calibration, the calibration system further comprising a second attenuator, a second power meter, and a second display;
and a second output end of the passive module unit is connected with an input end of the second attenuator, an output end of the second attenuator is connected with the second power meter, and the second power meter is connected with the second display.
10. The wideband intermodulation power device calibration system of any of claims 6-8 wherein the compensation calibration is a compensation reception calibration, the calibration system further comprising a third standard signal source;
and the third standard signal source is connected with the second output end of the passive module unit and performs signal synchronization on the third standard signal source and the signal control transceiving module according to a preset megahertz value.
CN202211071844.6A 2022-09-02 2022-09-02 Broadband intermodulation power device and calibration system thereof Pending CN115396045A (en)

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CN202211071844.6A CN115396045A (en) 2022-09-02 2022-09-02 Broadband intermodulation power device and calibration system thereof

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Application Number Priority Date Filing Date Title
CN202211071844.6A CN115396045A (en) 2022-09-02 2022-09-02 Broadband intermodulation power device and calibration system thereof

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CN115396045A true CN115396045A (en) 2022-11-25

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