CN110501703A - A kind of small-sized imaging radar RF receiving and transmission module - Google Patents
A kind of small-sized imaging radar RF receiving and transmission module Download PDFInfo
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- CN110501703A CN110501703A CN201910803744.XA CN201910803744A CN110501703A CN 110501703 A CN110501703 A CN 110501703A CN 201910803744 A CN201910803744 A CN 201910803744A CN 110501703 A CN110501703 A CN 110501703A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
- G01S13/536—Discriminating between fixed and moving objects or between objects moving at different speeds using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
- G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/35—Details of non-pulse systems
- G01S7/352—Receivers
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- 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
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention proposes a kind of small-sized imaging radar RF receiving and transmission modules, it include integrated chip, power supply, synchronous circuit and LO local oscillation circuit, integrated chip includes a master chip and three from chip, respectively first from chip, second from chip, third is from chip and master chip, first from chip, second from chip, third is respectively arranged with receiving antenna from chip and master chip, transmission antenna and for primary processor send data transmitter, synchronous circuit and LO local oscillation circuit are connected in integrated chip, synchronous circuit includes digital synchronous circuits and clock synchronization circuit, integrated chip is connected on power supply, power conversion chip is provided in power supply, power conversion chip includes that there are four decompression DC or direct current transducer kernels, direct current transducer kernel is 4 single-phase outputs, the present invention is disliking Under bad weather condition, the high-definition picture by providing static and dynamic object substantially increases the driving safety coefficient of vehicle.
Description
Technical field
The present invention relates to wireless communication technology fields, and in particular to arrives a kind of small-sized imaging radar RF receiving and transmission module.
Background technique
The advanced driving assistance system of the ADAS(of vehicle) further include whether vehicle parks safely, or decide whether to change
Become lane, and provide the control functions such as automatic cruising, keep constant such as vehicle and preceding vehicle at a distance from, or track front that
The speed of vehicle prevents from causing the accidents such as collision because driver neglects, can be by observing the region of vehicle front, if observation
To the barrier for probably bumping against automobile, just sounded an alarm to ADAS subsystem.Realize that these technologies need various sensors
The barrier in various environment is detected, and the speed for tracking them and position change with time.
CW with frequency modulation (FMCW) radar can be between the distance between precise measurement barrier and vehicle and they
Relative velocity, therefore, radar rise in autonomous driving vehicle (as lane change is parked and assisted to auxiliary) and automotive safety applications program
To critical effect (automatic Pilot and avoid collision).Radar is exactly thunder more than video camera and a considerable advantage of optical detection
Up to (such as influence of rainwater, dust and smog) can be measured in complicated and rugged environment.FMCW(CW with frequency modulation)
Radar can work (radar is not influenced by dazzle) in the environment of complete darkness or bright daylight, because they emit
With it is received be electromagnetic wave.Compared with ultrasonic wave, usually there is radar longer measurement distance and faster speed to transmit
Their signal.Although Radar Technology has many advantages, in many cases, the automaker of today is still using taking the photograph
Camera sensor is applied in the safety problem of vehicle as main sensor technology.Radar sensor is as secondary sensing
Device, it is meant that when Vehicular system receives RADAR WARNING, but only can just take action after camera sensor is verified, mainly
The reason is that the limitation of radar angular resolution.Radar sensor on current most of vehicles, which lacks to distinguish, has same distance and phase
With the ability of the stationary body of relative velocity.
Summary of the invention
Goal of the invention: the purpose of the present invention is for the deficiency in current technology, provide a kind of small-sized imaging radar to penetrate
Frequency transceiver module can improve vehicle by providing the high-definition picture of static and dynamic object under inclement weather conditions
Driving safety coefficient.
Technical solution: to achieve the above object, the present invention provides a kind of small-sized imaging radar RF receiving and transmission modules, special
Sign is: including integrated chip, power supply, synchronous circuit and LO local oscillation circuit, the integrated chip includes a main core
Piece and three from chip, respectively first from chip, second from chip, third from chip and master chip, described first from core
Piece, second are respectively arranged with receiving antenna, transmission antenna from chip, third from chip and master chip and are used for from main
The transmitter that device sends data is managed, the synchronous circuit and LO local oscillation circuit are connected in integrated chip, described to synchronize electricity
Road includes digital synchronous circuits and clock synchronization circuit, and the integrated chip is connected on power supply, is provided in the power supply
Power conversion chip, the power conversion chip include there are four decompression DC or direct current transducer kernel, in direct current transducer
Core is 4 single-phase outputs.
It further include having digital test panel and connector, the integrated chip passes through company as a kind of improvement of this programme
Device connection and digital test panel are connect, described first believes from chip, second from chip, third from the control of chip and master chip
Number and reset signal digital test panel is connected to by connector.
As a kind of improvement of this programme, described first from chip, second from chip, third between chip and master chip
It is respectively arranged with LO local oscillation circuit, digital synchronous circuits and clock synchronization circuit.
As a kind of improvement of this programme, the LO local oscillation circuit includes amplification, filtering, two-stage function point, amplifies, filtering,
Signal, is divided into two, using two by the signal of local oscillator input by entering power splitter after decaying, power amplifier, decaying, filtering
Power splitter same as front front two identical signals that function has been divided to are divided into two respectively again to be formed four it is identical
Signal, then obtain desired four identical local oscillation signals through overdamping, power amplifier and filtering respectively and be respectively supplied to first from core
Piece, second are from chip, third from chip and master chip.
As a kind of improvement of this programme, the transmission antenna and receiving antenna separately constitute 12 transmitting string location antennas
With 16 reception string location antennas, described first from chip, second from chip, third from the transmitting day on chip and master chip
Line and receiving antenna are respectively 3 transmitting antennas and 4 receiving antennas.
As a kind of improvement of this programme, described first is equal from chip, third from chip and master chip from chip, second
At 45 ° and spaced set.
As a kind of improvement of this programme, it is provided with reserved local oscillator source interface outside RF receiving and transmission module and clock connects
Mouthful, the reserved local oscillator source interface and clock interface are connected to connector.
As a kind of improvement of this programme, the clock interface is 40MHz.
The utility model has the advantages that the radio frequency for forming cascade imaging radar in the present invention by a four chip cascade solutions is received
Module is sent out, is compared to pervious sensor advantage: main sensors of the radar as vehicle, rather than secondary sensor,
Under inclement weather conditions, the driving safety system of vehicle is improved by providing the high-definition picture of static and dynamic object
Number, application range is wider, effectively improves people's lives quality.
Detailed description of the invention
Fig. 1 is small-sized imaging radar RF receiving and transmission module theory structure schematic diagram；
Fig. 2 is master chip XA1243P and the level link composition from 1XA1243P；
Fig. 3 is from 2 XA1243P chip structure connection figures；
Fig. 4 is from 3 XA1243P chip structure connection figures；
Connection relationship structure chart of the Fig. 5 between signal wire and connector；
Fig. 6 is the functional block diagram of local oscillation circuit；
Fig. 7 is the design frame chart of power supply；
Positional relationship of the Fig. 8 between antenna sets and integrated chip；
Fig. 9 is T/R(hair, receives) the simulation model figure of string location antenna in antenna array；
Figure 10 is the side view of simulation model；
Figure 11 is the two-dimensional directional figure of string location；
Figure 12 be 3T(3 hair) antenna array simulation model figure；
Figure 13 be 3T(3 hair) antenna array emulation two-dimensional directional figure；
Figure 14 is that 4R(4 is received) the simulation model figure of antenna array；
Figure 15 be 4R(4 receive) antenna array emulation two-dimensional directional figure.
Reference signs list: 1, receiving antenna；2, transmitting antenna；3, patch string location；4, with reference to ground；5, dielectric-slab.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to direction or remote
Direction from geometric center of specific component.
Such as Fig. 1-15, wherein Slave1 is first from chip, and Slave2 is second from chip, and Slave3 is third from core
Piece, Slave4 are the 4th from chip, and Master is master chip, and TX is receiving antenna 1, and RX is transmitting antenna 2.
A kind of small-sized imaging radar RF receiving and transmission module is formed by four XA1243P chip cascades, further includes having electricity
Source, clock synchronization circuit, digital synchronous circuits and LO local oscillation circuit composition, four XA1243P integrated chips are in small-sized imaging
Be divided into principal and subordinate's chip in radar RF receiving and transmission module, respectively master chip and first from chip, second from chip, third from core
Piece, XA1243P chip are that a integrated form single-chip FMCW(frequency modulation that can be run in 76 to 81GHz frequency band is continuous
Wave) transceiver, which realizes unprecedented integrated level in minimum encapsulation, and XA1243P is to be suitable for automobile to lead
Low-power consumption in domain, from monitoring, the ideal solution of the true radar system of superfinishing, realizing one has built-in PLL and modulus
The monolithic of converter implements 3TX, 4RX system, and it includes low coverage that the change of simple programming model, which can support various sensors to implement,
From, it is middle with a distance from and remote sensor, and be able to carry out dynamic reconfigure, to realize multimodal sensor, each
Each transmitter of XA1243P chip includes programmable 6 bit phase shifter, and the length is 5.625 degree of step-lengths, can make wave
Beam is formed, which includes the radio processor BIST built in one, is used for RF calibration and safety monitoring.
LO local oscillation circuit, clock synchronization circuit and digital synchronous circuits built in master chip provide 20GHz LO local oscillator respectively
The LO local oscillator output of circuit, 40MHz clock synchronization circuit and digital synchronous circuits, master chip Master is synchronous by A, B, C respectively
To other three from chip, clock synchronization output signal D, E of master chip Master is synchronized to other three from chip, main
F, G, H are synchronized to other three from chip respectively by the digital synchronous output of chip Master, the RX of four XA1243P chips
It is all connect with one group of etching paster antenna on radio-frequency receiving-transmitting plate with microstrip line with TX antenna, four chips create 12 in total
A TX transmission channel and 16 RX receiving channels, are respectively used to send and receive signal, may be implemented array Wave beam forming and
Multiple-input and multiple-output operates, and four XA1243P on RF receiving and transmission module contain a 4 port CSI2.0 transmitters, is used for
Radar data is sent to host-processor, signal is controlled in each XA1243P integrated chip and reset signal is attached to FMC
On connector, it is connected on subsequent digital test panel.
The 20GHz LO local oscillation circuit distribution of XA1243P chip be all by an amplification, filtering, two-stage function point, amplification,
Link is filtered come what is realized, the width of intermediate microstrip transmission line is calculated according to 5 material of dielectric-slab of selection, uses microstrip transmission line
Link connection is got up, local oscillation signal is exported from master chip XA1243P output end by two-stage power splitter, is separately input to four
The local oscillator input terminal of piece XA1243P chip, clock is synchronous and digital synchronous is also that identical mode is exported and inputted, and LO local oscillator is defeated
Enter the signal of 7dBm of coming in, signal is divided into two by entering power splitter after decaying, power amplifier, decaying, filtering, using two
Front two identical signals that function has been divided to are divided into two by a power splitter same as front respectively again, thus obtain four
A same signal, then obtain desired four identical local oscillation signals through overdamping, power amplifier and filtering respectively and be respectively supplied to
First from chip, second from chip, third from chip and master chip.
The demand voltage of XA1243P chip is respectively tetra- kinds of voltage values of 3.3V, 1.8V, 1.3V, 1.0V, is converted by power supply
Chip carries out voltage conversion, selects power conversion chip LP87524J, and LP87524J chip includes four decompression DCs or straight
Stream transformer kernel, these kernel setups are 4 single-phase outputs, and the voltage of 5V can be converted to XA1243P chip needs
Four kinds of voltages select two panels LP87524 power conversion chip to drive four XA1243P chips., radar RF receiving and transmission module and
It being connected between digital test plate by connector FMC, the voltage that connector FMC is supplied to small radar RF receiving and transmission module is 12V,
Select a piece of model LTM4628J the voltage of 12V can be converted to 5V, by the calculating of electric current, a piece of LP87524J power supply
Chip can be powered to 2 XR1243 chips, so by the way that 2 LP87524J power supply chips are arranged by digital test panel
Connecting come is that the voltage of 12V is converted to two groups of 5V voltages used for XA1243P chip.
To guarantee equiphase distribution, i.e. receiving antenna 1 and transmitting antenna 2 is equiphase distribution, prevents deviation, antenna
Waveguide feeder need isometric, four XA1243P chips placement at 45 °, be followed successively by master chip, first from top to bottom from core
Piece, second are from chip, third from chip, and equidistant to arrange, every XA1243P chip all passes through waveguide feed line and 3TX and 4TR
Aerial array is connected, wherein the aerial array difference of three 2 string locations of transmitting antenna and four 1 string location of receiving antenna compositions
Microwave signal for transmitting and receiving, the spacing between all antenna string locations is 2mm, so entire small-sized imaging radar is penetrated
Frequency transceiver module contains 12 transmitting string location antennas and 16 reception string location antennas.
In addition, for cascade chip extension, the reserved local oscillator source interface in outside and 40MHz clock interface are connected to FMC
On connector.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.
Claims (8)
1. a kind of small-sized imaging radar RF receiving and transmission module, it is characterised in that: include integrated chip, power supply, synchronous circuit with
And LO local oscillation circuit, the integrated chip include a master chip and three from chip, respectively first from chip, second from
Chip, third are divided from chip and master chip from chip, second from chip, third from chip and master chip, described first
Be not provided with receiving antenna (1), transmission antenna and for primary processor send data transmitter, the synchronous circuit and
LO local oscillation circuit is connected in integrated chip, and the synchronous circuit includes digital synchronous circuits and clock synchronization circuit,
The integrated chip is connected on power supply, and power conversion chip is provided in the power supply, and the power conversion chip includes
Four decompression DCs or direct current transducer kernel, direct current transducer kernel are 4 single-phase outputs.
2. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: further include having number
Test panel and connector, the integrated chip is by connector connection and digital test panel, and described first from chip, second
Digital test panel is connected to by connector from chip, third from the control signal and reset signal of chip and master chip.
3. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: described first from core
It is same that piece, second are respectively arranged with LO local oscillation circuit, digital synchronous circuits and clock from chip, third between chip and master chip
Step circuit.
4. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: the LO local oscillator electricity
Road includes amplification, filtering, two-stage function point, amplification, filtering, and the signal of local oscillator input is laggard by decaying, power amplifier, decaying, filtering
Enter to power splitter and signal is divided into two, be divided to two of function are identical by front using two power splitters same as front
Signal be divided into two to form four identical signals again respectively, then obtain desired four through overdamping, power amplifier and filtering respectively
A identical local oscillation signal is respectively supplied to first from chip, second from chip, third from chip and master chip.
5. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: the transmission antenna
12 transmitting string location antennas and 16 reception string location antennas are separately constituted with receiving antenna (1), and described first from chip,
Two from chip, third from chip and master chip transmitting antenna (2) and receiving antenna (1) be respectively 3 transmitting antennas (2)
With 4 receiving antennas (1).
6. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: described first from core
The at 45 ° and spaced set from chip, third from chip and master chip of piece, second.
7. a kind of small-sized imaging radar RF receiving and transmission module according to claim 1, it is characterised in that: RF receiving and transmission module
Outside is provided with reserved local oscillator source interface and clock interface, and the reserved local oscillator source interface and clock interface are connected to connection
Device.
8. a kind of small-sized imaging radar RF receiving and transmission module according to claim 7, it is characterised in that: the clock interface
For 40MHz.
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| CN201910803744.XA CN110501703A (en) | 2019-08-28 | 2019-08-28 | A kind of small-sized imaging radar RF receiving and transmission module |
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| CN201910803744.XA CN110501703A (en) | 2019-08-28 | 2019-08-28 | A kind of small-sized imaging radar RF receiving and transmission module |
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| CN115347894A (en) * | 2022-10-17 | 2022-11-15 | 杭州岸达科技有限公司 | Radio frequency interface circuit and multi-chip cascade method based on radio frequency interface circuit |
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| CN111175700A (en) * | 2020-01-19 | 2020-05-19 | 中国科学院电子学研究所 | 77GHz millimeter wave MIMO radar front-end system |
| CN115347894A (en) * | 2022-10-17 | 2022-11-15 | 杭州岸达科技有限公司 | Radio frequency interface circuit and multi-chip cascade method based on radio frequency interface circuit |
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