CN207866267U - A kind of miniaturization electromagnetic sensor - Google Patents
A kind of miniaturization electromagnetic sensor Download PDFInfo
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- CN207866267U CN207866267U CN201820130738.3U CN201820130738U CN207866267U CN 207866267 U CN207866267 U CN 207866267U CN 201820130738 U CN201820130738 U CN 201820130738U CN 207866267 U CN207866267 U CN 207866267U
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Abstract
The utility model is related to a kind of miniaturization electromagnetic sensors, including：Frequency synthesizer and the broad-band antenna to connect successively, RF front-end module, IF process module and output interface, broad-band antenna are used for inductive spacing electromagnetic signal；RF front-end module includes using the integrated radio-frequency switch array on the same chip of bonding techniques and multiple radio-frequency channels, the spatial electromagnetic signal of different frequency is respectively connected to different radio-frequency channels by radio-frequency switch array, a frequency mixer is equipped in any radio-frequency channel, the spatial electromagnetic signal in the radio-frequency channel is down-converted to the intermediate-freuqncy signal of a specific frequency by frequency mixer；The intermediate-freuqncy signal of specific frequency is down-converted to baseband digital signal by IF process module, to export the characteristic information of spatial electromagnetic signal.It is big can to solve traditional measurement electromagnetic signal equipment volume for the technical solution of the utility model, it has not been convenient to and it is mobile, and cannot achieve and the problem of live Electro Magnetic Compatibility is measured with assessment is carried out to working equipment, especially aircraft devices.
Description
Technical field
The utility model is related to electromagnetic sensor technical fields, and in particular to a kind of miniaturization electromagnetic sensor.
Background technology
Electromagnetic interference refers to that electronic equipment and system are interfered by forceful electric power interference or extraneous electromagnetic signals, causes equipment
Working performance declines or cisco unity malfunction.Equipment at work, due to local environment difference, may be interfered by surrounding
The influence in source leads to equipment operation irregularity, and great harm is caused with civil field military.
Although we are national or other national when each electronic equipment dispatches from the factory, stringent inspection specification and mark have all been formulated
Standard, such as many electromagnetic compatibility microwave dark rooms are established, pass through the reliability of various testing inspection electronic device works.But
Often test all is that (either electronic equipment is not completely disposed in working condition) is unfolded or only to electronics under static environment
Equipment individually detects.And in fact, modern comfort or equipment, have a large amount of wireless device simultaneously in limited working environment
Or electronic equipment, working signal are highly prone to interfere, so that the work of investigation electromagnetic compatibility is increasingly sophisticated.This is just badly in need of
A kind of sensor of on-the-spot test electromagnetic environment is wanted, the measurement and assessment of live Electro Magnetic Compatibility can be carried out to working equipment, it is right
The research and development of product have important directive significance with production.
For the equipment of electromagnetic measurement, it is concentrated mainly on external producer, such as the WINRADIO companies of Australia at present
Research and development WR-G39DDCe products, the SigMon systems of SAT companies of the U.S., the E3238S/N6820E of Agilent company of the U.S. are special
Radio signal monitors system (being commonly called as blackbird) etc., also there are the product of follow-up in some domestic research institutes, all have following features：
Expensive, maintenance cost is higher.
Volume is larger：It is mainly used for research department or laboratory uses, is not easy to the system integration.
Standardized equipment：Function is complicated, and professional is needed to operate.
Antenna is not provided, it can not compatible proprietary system.
Utility model content
In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, a kind of miniaturization electromagnetism biography is provided
Sensor is big to solve traditional measurement electromagnetic signal equipment volume, it has not been convenient to it is mobile, and cannot achieve to working equipment, especially
Aircraft devices carry out the problem of live Electro Magnetic Compatibility is measured with assessment.
In order to achieve the above object, the utility model adopts the following technical solution：
A kind of miniaturization electromagnetic sensor, including：Frequency synthesizer and the broad-band antenna to connect successively, radio-frequency front-end mould
Block, IF process module and output interface, wherein
The broad-band antenna is used for inductive spacing electromagnetic signal；The RF front-end module includes integrated using bonding techniques
Radio-frequency switch array on the same chip and multiple radio-frequency channels, the radio-frequency switch array are used for the space of different frequency
Electromagnetic signal is respectively connected to different radio-frequency channels, a frequency mixer is equipped in any radio-frequency channel, and the frequency mixer is used
In the intermediate-freuqncy signal that the spatial electromagnetic signal in the radio-frequency channel is down-converted to a specific frequency；The frequency synthesizer is used for
The local oscillated signal of down coversion is provided under the control of the IF process module for each radio-frequency channel；
The IF process module is used to the intermediate-freuqncy signal of the specific frequency down-converting to baseband digital signal, and right
The baseband digital signal is handled to export the characteristic information of spatial electromagnetic signal；Wherein, the spatial electromagnetic signal
Characteristic information includes：Frequency, amplitude and phase.
Preferably, be additionally provided in any radio-frequency channel bandpass filter, low noise amplifier, variable gain amplifier and
Low-pass filter；The bandpass filter, low noise amplifier, frequency mixer, variable gain amplifier and low-pass filter phase successively
It connects.
Preferably, the radio-frequency switch array includes the first radio-frequency switch array and the second radio-frequency switch array, wherein
The input terminal of first radio-frequency switch array is connected with the broad-band antenna, the band of output end and each radio-frequency channel
Bandpass filter is connected；The input terminal of second radio-frequency switch array is connected with the low-pass filter of each radio-frequency channel, output end
It is connected with the IF process module；
First radio-frequency switch array is used to the spatial electromagnetic signal of different frequency being respectively connected to different radio frequencies
Channel；The intermediate-freuqncy signal for the specific frequency that second radio-frequency switch array is used to export each radio-frequency channel by default sequential is defeated
Give the IF process module.
Preferably, the IF process module includes RF transceiver and the processor that is connected with the RF transceiver,
Wherein,
The RF transceiver is used to receive the intermediate-freuqncy signal of the specific frequency of each radio-frequency channel conveying, and will be described specific
The intermediate-freuqncy signal of frequency is converted to baseband digital signal and exports to the processor；The processor is used for the base-band digital
Signal carries out analytic operation, and exports the characteristic information of spatial electromagnetic signal.
Preferably, the processor includes：
Adding window module, the baseband digital signal for being exported to the RF transceiver carry out multiplying window, obtain specific
Baseband digital signal in time domain scale；
FFT module obtains frequency domain sound for carrying out FFT operations to the baseband digital signal in the specific time domain scale
Induction signal；
Modulus module obtains the frequency spectrum width of spatial electromagnetic signal for carrying out modulo operation to the frequency domain response signal
Angle value；
Data preprocessing module for being compressed to the frequency domain response signal, and is sent by the output interface
To external equipment.
Preferably, the RF transceiver selects AD9361 to integrate transceiving chip, and the processor selects ZYNQ7020 systems
Arrange AP-SOC chips.
Preferably, the SPI interface that the processor is drawn is connected with the SPI control interfaces of AD936, for AD9361
Parameter configuration.
Preferably, the DDR chips of the external 2000MB of the processor, while being also provided with SD card interface；
The base band data interface of AD9361 is connected with the ends PL of the processor, and the processor passes through sequential coupling and control
System, the DDR chips are sent to by the AXI buses that the baseband digital signal received is connected by internal AXI-DMA.
Preferably, the broad-band antenna includes loop aerial for incuding low frequency space electromagnetic signal and for incuding height
The cone antenna of frequency spatial electromagnetic signal.
Preferably, the miniaturization electromagnetic sensor, further includes shell, and mutiple antennas interface is provided on the shell,
The broad-band antenna is arranged pluggablely in the antennal interface；The RF front-end module and the setting of IF process module exist
In the shell, the output interface is embedded on the housing.
The utility model uses above technical scheme, at least has following advantageous effect：
Due to the unique advantage in packaging efficiency, signaling rate, electrical property etc., multi-chip microwave (MCM) is
Into the overall application stage, it has the distinguishing features such as wiring density height, short, small, the light-weight and function admirable of interconnection line.
This miniaturization electromagnetic sensor provided by the utility model, RF front-end module include being integrated in same core using bonding techniques
The radio-frequency switch array of on piece and multiple radio-frequency channels, RF front-end module use microwave bonding techniques, complete machine are made to minimize
(in concrete practice, this miniaturization electromagnetic sensor provided by the utility model volume can be done to only
165mmx100mmx65m m, tolerance+0.1mm), high integration, high-speed semiconductor IC performances have been played to greatest extent, to subtract
The volume for having lacked electromagnetic sensor makes it that can both be integrated in inside working equipment, can also be mounted on around working equipment, solution
Traditional measurement electromagnetic signal equipment volume of having determined is big, it has not been convenient to and it is mobile, and cannot achieve and working equipment, especially aircraft are set
It is standby to carry out the problem of live Electro Magnetic Compatibility is measured with assessment.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of whole schematic block diagram for miniaturization electromagnetic sensor that one embodiment of the utility model provides；
Fig. 2 is the schematic block diagram for the RF front-end module that one embodiment of the utility model provides；
Fig. 3 is the schematic block diagram for the IF process module that one embodiment of the utility model provides.
Specific implementation mode
It, below will be to the technology of the utility model to keep the purpose of this utility model, technical solution and advantage clearer
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Referring to Fig. 1 and Fig. 2, a kind of miniaturization electromagnetic sensor that one embodiment of the utility model provides, including：Frequency is comprehensive
Clutch 1 and the broad-band antenna 2 to connect successively, RF front-end module 3, IF process module 4 and output interface 5,
Wherein, the broad-band antenna 2 is used for inductive spacing electromagnetic signal；The RF front-end module 3 includes using bonding
Integration ofTechnology radio-frequency switch array on the same chip and multiple radio-frequency channels, the radio-frequency switch array are used for different frequencies
The spatial electromagnetic signal of rate is respectively connected to different radio-frequency channels, a frequency mixer 31, institute are equipped in any radio-frequency channel
State intermediate-freuqncy signal of the frequency mixer 31 for the spatial electromagnetic signal in the radio-frequency channel to be down-converted to a specific frequency；The frequency
Rate synthesizer 1 is used to provide the local oscillated signal of down coversion for each radio-frequency channel under the control of the IF process module 4；
The IF process module 4 is used to the intermediate-freuqncy signal of the specific frequency down-converting to baseband digital signal, and
The baseband digital signal is handled to export the characteristic information of spatial electromagnetic signal；Wherein, the spatial electromagnetic signal
Characteristic information include：Frequency, amplitude and phase.
It is understood that due to the unique advantage in packaging efficiency, signaling rate, electrical property etc., multicore
Piece microwave (MCM) has been enter into the overall application stage, it has, and wiring density is high, interconnection line is short, small, light-weight and performance is excellent
The distinguishing features such as good.This miniaturization electromagnetic sensor provided by the utility model, RF front-end module 3 include using bonding skill
The integrated radio-frequency switch array on the same chip of art and multiple radio-frequency channels, RF front-end module 3 use microwave bonding skill
Art makes complete machine minimize, and high integration, high-speed semiconductor IC performances has been played to greatest extent, to reduce electromagnetic sensor
Volume, make it that can both be integrated in inside working equipment, can also be mounted on working equipment around, solve traditional measurement electricity
Magnetic signal equipment volume is big, it has not been convenient to and it is mobile, and cannot achieve and live electromagnetism is carried out to working equipment, especially aircraft devices
The problem of compatibility measurements are with assessment.
Referring to Fig. 2, it is preferable that be additionally provided with bandpass filter, low noise amplifier, variable gain in any radio-frequency channel
Amplifier and low-pass filter；The bandpass filter 34, low noise amplifier 35, frequency mixer 31,36 and of variable gain amplifier
Low-pass filter 37 connects successively.
Preferably, the radio-frequency switch array includes the first radio-frequency switch array 32 and the second radio-frequency switch array 33,
In,
The input terminal of first radio-frequency switch array 32 is connected with the broad-band antenna 2, output end and each radio-frequency channel
Bandpass filter 34 be connected；37 phase of low-pass filter of the input terminal of second radio-frequency switch array 33 and each radio-frequency channel
Even, output end is connected with the IF process module 4；
First radio-frequency switch array 32 is for the spatial electromagnetic signal of different frequency to be respectively connected to different penetrate
Frequency channel；The intermediate frequency for the specific frequency that second radio-frequency switch array 33 is used to export each radio-frequency channel by default sequential is believed
Number it is conveyed to the IF process module 4.
It should be noted that this miniaturization electromagnetic sensor provided by the utility model, broad-band antenna 2 can incude
The frequency of the spatial electromagnetic signal of 9kHz~41GHz, the spatial electromagnetic signal of each radio-frequency channel processing is continuously adjustable, and
Equiband.Such as：The processing of first radio-frequency channel be 9KHz~2009KHz spatial electromagnetic signal, at the second radio-frequency channel
What is managed is the spatial electromagnetic signal of 2010KHz~4010KHz, and what third radio-frequency channel was handled is the sky of 4011KHz~6011KHz
Between electromagnetic signal ....
It is understood that the frequency of the local oscillated signal in each radio-frequency channel for down coversion is also continuously adjustable
, it is generated by frequency synthesizer 1, the frequency mixer 31 being respectively delivered in each radio-frequency channel, under spatial electromagnetic signal
Frequency conversion.The centre frequency of the bandpass filter 34 of each radio-frequency channel is also different with upper and lower cutoff frequency.
It should be noted that the specific frequency is 325.5MHzMHz.
It is understood that this miniaturization electromagnetic sensor provided by the utility model, first incudes broad-band antenna 2
Spatial electromagnetic signal carry out equiband division, be then mixed.It is carried out respectively by bandpass filter 34 afterwards before mixing
Adding window and filter are made an uproar, and after mixing, are carried out filter again by low-pass filter 37 to the intermediate-freuqncy signal of the specific frequency of output and are made an uproar, effectively
The interference for inhibiting ambient noise realizes radiofrequency signal low-loss and is received with good signal-to-noise ratio.
Preferably, the IF process module 4 includes RF transceiver and the processor being connected with the RF transceiver,
Wherein,
The RF transceiver is used to receive the intermediate-freuqncy signal of the specific frequency of each radio-frequency channel conveying, and will be described specific
The intermediate-freuqncy signal of frequency is converted to baseband digital signal and exports to the processor；The processor is used for the base-band digital
Signal carries out analytic operation, and exports the characteristic information of spatial electromagnetic signal.
Preferably, the processor includes：
Adding window module, the baseband digital signal for being exported to the RF transceiver carry out multiplying window, obtain specific
Baseband digital signal in time domain scale；
FFT module obtains frequency domain sound for carrying out FFT operations to the baseband digital signal in the specific time domain scale
Induction signal；
Modulus module obtains the frequency spectrum width of spatial electromagnetic signal for carrying out modulo operation to the frequency domain response signal
Angle value；
Data preprocessing module is sent for being compressed to the frequency domain response signal, and by the output interface 5
To external equipment.
Referring to Fig. 3, it is preferable that the RF transceiver selects AD9361 to integrate transceiving chip, and the processor is selected
ZYNQ7020 series A P-SOC chips.
Preferably, the SPI interface that the processor is drawn is connected with the SPI control interfaces of AD936, for AD9361
Parameter configuration.
Preferably, the DDR chips of the external 2000MB of the processor, while being also provided with SD card interface；
The base band data interface of AD9361 is connected with the ends PL of the processor, and the processor passes through sequential coupling and control
System, the DDR chips are sent to by the AXI buses that the baseband digital signal received is connected by internal AXI-DMA.
It is understood that device under test electromagnetic signal carry out real time spectral analysis when, it is desirable that a frame FFT transform when
Between be less than a frame data acquisition time, just can guarantee that triggering is real-time in this way.Most of baseband digital signal processing at present are all
Handled using special signal processor such as DSP, it the advantages of be all processing can use software realization, design
Get up very flexibly controllable.But since DSP is serial process device, its processing speed is insufficient for real time spectrum point
The processing speed requirement of analysis, is commonly used in non real-time spectrum analysis or the real-time analyzing processing of low-frequency range.
In order to reach the requirement of high rate bioreactor, it is necessary to carry out parallel processing by means of hardware.FPGA is as programmable
Logical device, parallel behavior can make data processing speed meet the requirement that real time signal processing is analyzed.Although FPGA
There is good performance in parallel processing, but can not show a candle to the processing apparatus such as DSP in terms of flexibility, in turning for complex data stream
Change control, more complicated in the realization using things decision etc..This compact electromagnetic sensor provided by the utility model,
The zynq-7000 series A P-SOC for selecting Xilinx to release, portion is integrated with high-performance double-core cotex-A9 processing in the chip for it
Device core and FPGA.Xilinx companies develop and the inside PS (processor system) and PL of definition (processing logic) flexibly interact machine
System, all time-consuming signal processing work can transfer to internal hardware logic PL to do, and complicated data control and decision
Processing then transfers in piece PS to complete.So it can meet the requirement to baseband digital signal high speed processing and answer
The flexibility of miscellaneous logic control.
Preferably, the broad-band antenna 2 includes loop aerial for incuding low frequency space electromagnetic signal and for incuding
The cone antenna of high frequency spatial electromagnetic signal.
It is understood that the electromagnetic wave for the spatial mixing for including in test environment can also be treated as the electromagnetism of target emanation
It is monitored to simultaneously, it, can be in the range apart from 3~10 wavelength of object to be measured, with known electrical characteristics when near field measurement
Probe, quickly scans object to be measured, converts electrical signals into transform-domain signals (FFT) and analyzed.When far-field measurement,
It is measured using dedicated antenna.
Therefore, it is two kinds that broad-band antenna 2, which is divided to,：Loop aerial for incuding low frequency space electromagnetic signal and for incuding height
The cone antenna of frequency spatial electromagnetic signal.
Preferably, the miniaturization electromagnetic sensor, further includes shell, and mutiple antennas interface is provided on the shell,
The broad-band antenna 2 is arranged pluggablely in the antennal interface；The RF front-end module 3 and IF process module 4 are set
It sets in the shell, the output interface 5 is embedded on the housing.
It should be noted that this miniaturization electromagnetic sensor provided by the utility model, has reserved abundant interface, example
Such as RS422 interfaces, Ethernet interface, convenient for integrated with external system.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.Term " first ", " second " are used for description purposes only, and are not understood to indicate or imply phase
To importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
Claims (10)
1. a kind of miniaturization electromagnetic sensor, which is characterized in that including：Frequency synthesizer and the broad-band antenna to connect successively are penetrated
Frequency front-end module, IF process module and output interface, wherein
The broad-band antenna is used for inductive spacing electromagnetic signal；The RF front-end module includes being integrated in together using bonding techniques
Radio-frequency switch array on one chip and multiple radio-frequency channels, the radio-frequency switch array are used for the spatial electromagnetic of different frequency
Signal is respectively connected to different radio-frequency channels, a frequency mixer is equipped in any radio-frequency channel, the frequency mixer is used for will
Spatial electromagnetic signal in the radio-frequency channel down-converts to the intermediate-freuqncy signal of a specific frequency；The frequency synthesizer is used in institute
State the local oscillated signal that down coversion is provided under the control of IF process module for each radio-frequency channel；
The IF process module is used to the intermediate-freuqncy signal of the specific frequency down-converting to baseband digital signal, and to described
Baseband digital signal is handled to export the characteristic information of spatial electromagnetic signal；Wherein, the characteristic of the spatial electromagnetic signal
Information includes：Frequency, amplitude and phase.
2. miniaturization electromagnetic sensor according to claim 1, which is characterized in that be additionally provided in any radio-frequency channel
Bandpass filter, low noise amplifier, variable gain amplifier and low-pass filter；The bandpass filter, mixes low noise amplifier
Frequency device, variable gain amplifier and low-pass filter connect successively.
3. miniaturization electromagnetic sensor according to claim 2, which is characterized in that the radio-frequency switch array includes first
Radio-frequency switch array and the second radio-frequency switch array, wherein
The input terminal of first radio-frequency switch array is connected with the broad-band antenna, and output end and the band logical of each radio-frequency channel are filtered
Wave device is connected；The input terminal of second radio-frequency switch array is connected with the low-pass filter of each radio-frequency channel, output end and institute
IF process module is stated to be connected；
First radio-frequency switch array is used to the spatial electromagnetic signal of different frequency being respectively connected to different radio-frequency channels；
The intermediate-freuqncy signal for the specific frequency that each radio-frequency channel exports for being conveyed to by second radio-frequency switch array by default sequential
The IF process module.
4. miniaturization electromagnetic sensor according to claim 3, which is characterized in that the IF process module includes radio frequency
Transceiver and the processor being connected with the RF transceiver, wherein
The RF transceiver is used to receive the intermediate-freuqncy signal of the specific frequency of each radio-frequency channel conveying, and by the specific frequency
Intermediate-freuqncy signal be converted to baseband digital signal and export to the processor；The processor is used for the baseband digital signal
Analytic operation is carried out, and exports the characteristic information of spatial electromagnetic signal.
5. miniaturization electromagnetic sensor according to claim 4, which is characterized in that the processor includes：
Adding window module, the baseband digital signal for being exported to the RF transceiver carry out multiplying window, obtain specific time domain
Baseband digital signal in range；
FFT module obtains frequency domain response letter for carrying out FFT operations to the baseband digital signal in the specific time domain scale
Number；
Modulus module obtains the spectrum amplitude value of spatial electromagnetic signal for carrying out modulo operation to the frequency domain response signal；
Data preprocessing module is sent to outside for being compressed to the frequency domain response signal, and by the output interface
Portion's equipment.
6. miniaturization electromagnetic sensor according to claim 5, which is characterized in that the RF transceiver selects AD9361
Integrated transceiving chip, the processor select ZYNQ7020 series A P-SOC chips.
7. miniaturization electromagnetic sensor according to claim 6, which is characterized in that the SPI interface that the processor is drawn
It is connected with the SPI control interfaces of AD936, for the parameter configuration to AD9361.
8. miniaturization electromagnetic sensor according to claim 7, which is characterized in that the external 2000MB's of processor
DDR chips, while being also provided with SD card interface；
The base band data interface of AD9361 is connected with the ends PL of the processor, the processor by sequential coupling and control,
The AXI buses that the baseband digital signal received is connected by internal AXI-DMA are sent to the DDR chips.
9. minimizing electromagnetic sensor according to claim 1~8 any one of them, which is characterized in that the broad-band antenna packet
Include the loop aerial for incuding low frequency space electromagnetic signal and the cone antenna for induction of high frequency spatial electromagnetic signal.
10. miniaturization electromagnetic sensor according to claim 9, which is characterized in that further include shell, set on the shell
It is equipped with mutiple antennas interface, the broad-band antenna is arranged pluggablely in the antennal interface；The RF front-end module and
IF process module is arranged in the shell, and the output interface is embedded on the housing.
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| CN201820130738.3U CN207866267U (en) | 2018-01-25 | 2018-01-25 | A kind of miniaturization electromagnetic sensor |
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| CN201820130738.3U CN207866267U (en) | 2018-01-25 | 2018-01-25 | A kind of miniaturization electromagnetic sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108106640A (en) * | 2018-01-25 | 2018-06-01 | 北京星航信通科技有限公司 | A kind of miniaturization electromagnetic sensor |
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| CN108106640A (en) * | 2018-01-25 | 2018-06-01 | 北京星航信通科技有限公司 | A kind of miniaturization electromagnetic sensor |
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