Millimeter Wave Radar PCB

Millimeter-wave radar mainly uses 24G radar PCB and 77G radar PCB, and millimeter-wave radar PCB is mainly used in automobiles, smart, unmanned or military vehicles

Millimeter-wave radar PCB has broad application prospects. At present, Zhongbang PCB uses Rogers R03003G2+1TE0 IT180 to mass-produce 77GHz millimeter-wave radar PCB

For the PCB design of different millimeter-wave radar sensors, a common feature is the need to use low-loss radar PCB materials to reduce losses and increase antenna radiation.
Radar PCB materials are key components in radar sensor design. Choosing appropriate radar PCB materials can ensure the stability and consistency of millimeter-wave radar sensors.

How to design radar PCB performance? First of all, the electrical properties of radar PCB materials are the main factors in designing radar sensors and selecting radar PCB materials.
Selecting radar PCB materials with stable dielectric constants and extremely low losses is crucial to the performance of 77GHz m-wave radars.
Stable dielectric constants and losses can make the antenna’s receiving phase accurate, improve the antenna’s gain, scanning angle or range, and improve the accuracy of radar detection and positioning.
The stability of dielectric constants and loss characteristics can not only ensure the stability of materials from different batches, but also ensure that the changes within the same PCB board are very small,
With very good stability.

 

The surface roughness of the copper foil used in PCB radar materials will affect the dielectric constant and loss of the circuit.
The thinner the material, the greater the surface roughness of the copper foil, and the greater the impact on the circuit. The coarser the copper foil, the greater the change in the roughness of Ts,
the greater the change in the dielectric constant and loss, and the phase characteristics of the circuit.

Secondly, the reliability of the radar PCB material needs to be considered. The reliability of PCB materials does not only refer to the high reliability of the material during PCB processing.
It is affected by the process, through-holes, copper foil bonding, etc., and also includes the long-term stability of the material.
Whether the electrical properties of radar PCB materials remain stable over time, temperature, humidity and other working conditions is crucial to the reliability of automotive radar sensors and the application of automotive ADAS systems

For the PCB antenna design of 77GHz radar sensors, it is necessary to consider the selection of materials with stable dielectric constants and ultra-low loss.
The thicker the copper foil, the smaller the change in circuit loss and dielectric constant tolerance.
At the same time, radar PCB materials should have electrical and mechanical properties that change with external working environments such as time, temperature, humidity, etc.

 

R03003G2 High Frequency Radar PCB Material Roes R03003G2 High Frequency Ceramic Laminate is a key work of Roger Industrial and Engineering Division. R0303G2 laminate is a key material in the industrial field, specifically designed to address the needs of next generation millimeter wave automotive radar upgrades.

The resin and material content of R0203G2 composites provide plug-in brackets for ADA systems such as adaptive cruise control, forward braking, warning and braking Lane Keeping Assist.

R03003G2 high-freguency redsr PcB material Festures

Dielectric constant is 3.00 at 10 Hz and 3.07 at 77 GHz

Uses thin WLP) ED copper

Homogeneous structure with WLP ED copper and reduced dielectric porosity

Enhanced PCB system

Bocfts

Best-in-class insertion loss performance

Minimizes dielectric constant verification in finished PCB

Trend towards higher resolution

Global footprint

Advantage1:
High range resolution and ranging accuracy:

 

Compatible with the ISM band of 200MHz bandwidth in the 24GHz band. The SRR bandwidth of the 77GHz band can reach 4GHz ranging bandwidth, strictly controlling the resolution and sensitivity.

Subsequently, Amon rane Resclhisn regeseits ahity CFS radar appeared in two intervals, rmge aouay epeserhs solray of messuing a srglarget.

Since range resolution and sensitivity are closely related to resolution and width, the performance of 77Hz radar is better than that of CFS24GHz radar,
Which is 20 times higher than that of 24GHz radar. The resolution of 77GHz radar is 4cm (the resolution of 24Hz radar is 75cm). Higher resolution can better identify abnormal conditions of the vehicle;
And provide dense beams to detect abnormal conditions, thereby improving the safety of the vehicle,
which is very important for the development of advanced driver assistance systems and autonomous driving functions.
Generally speaking, the higher the resolution of the radar, the smaller the minimum distance for identification. Therefore,
77-8GHz radar has significant advantages in applications with high sensitivity (such as parking assistance systems).

The 77GHz high frequency resonator can be used from the top so that the seismometer can measure the liquid at the bottom of the tank,
As shown in the figure, to minimize the designated area at the bottom of the tank. In addition,
The high frequency resonator produces minimal mid-frequency losses when the resonator at the top can measure the liquid at the bottom of the tank.

Advemtege 2:

High-speed resolution and accuracy High-speed resolution and accuracy are inversely proportional to the RF frequency.
The higher the frequency, the better the resolution and scanning effect. 77 GHz sensors can reduce power consumption compared to 24GHz sensors.

For parcel assistance, high-speed detection and localization are required because it is necessary to ensure that you know when the parcel source can represent the ffT
range velocity image of the point object at 1 meter, and the improved resolution of the dimer image obtained using 77 GHz is described.
In addition, researchers have also improved pedestrian detection and increased object recognition rates by using mads with higher resolution and mio-Doppler signals.
Velocity measurement motion is suitable for industrial applications, but it can also improve the detection quality against the background of receiving vehicles

Adventbge 3: smaler size

One of the main disadvantages of the above Rf is the small size of the sensor, because the size of the 77GHz antenna can be reduced to three times the size of X and Y.
This size reduction is very easy, and many applications are applying it to the automotive industry and using it in actual cars.

From another perspective, the higher the RF power, the smaller the size of the sensor and the easier it is to install.

Millimeter wave radar is the core technology of radar to improve safety and convenience, so the application range of millimeter wave radar is very wide.

Reverse Automatic Emergency Braking (R-AE8)

Forward Cross Traffic Assist (IFCTARCTA)

Parking Assist (PA]

Blind Spot Detection (3S0)

Cascaded Imaging Radar (LLMR)

Automatic Emergency Braking (AEB)

Adaptive Cruise Control (AC)

Lock Reversing Assist (LCA)

Radar 360-degree Perception

What is the difference between 77G and 24G millimeter wave radar?

The two frequency bands 77GHz and 24GHz millimeter wave radars are not much different in principle,
but because the frequency determines that they are 77GHz millimeter wave radars and 24GHz millimeter wave radars have different frequency characteristics.
A common misunderstanding is that hidden millimeter wave radars are usually used for analytical measurements. The internal design depends entirely on the wavelength length.
On the other hand, in order to increase the wavelength and electromagnetic radiation, the distance between the two needs to be determined. The receiving antenna can be set at half a wavelength.
On the other hand, a shorter wavelength means that a smaller transmitting antenna can be used.
Based on the above theory, the 7GHz millimeter wave antenna can achieve a greater transmission rate and form a smaller aperture than the 24GHz millimeter wave antenna,
there by obtaining a narrower beam and improving measurement accuracy.

This is crucial for advertising detection.
This is because the ae kncth corresponds to the coninste system in the pool consistent with the inguaresolhcn of the ncese cf, or the check arc kroth is about 7 meters away from the rechton cf5 degem
At 200 meters, it is closer than the aerse rcsd, and the target can be carried out in the height direction here, currently 7GHz millimeter wave radar is used for forwandlonrane detection in the main power schhan,
While 24GHz millimeter wave radar is mainly used for short selection of cat res and sie.
Hatrag 76 millimeter wave rod island is used as 24G millimeter wave adar the technology is relative the design of materials and devices should have high precision and high reliability,
And according to different application environments, the highest precision devices can be designed.
For example, the antenna uses a narrowband signal to reduce interference, and the bandwidth of the short wave band can be increased to improve the range resolution.

The 77GHz millimeter wave antenna system module is installed on the design of the MCW antenna.
Most of them use a single-chip chip as a transmitter. The RF front end, transmitter and control unit are integrated into the antenna, providing multiple signal transmission and reception.
The design of the Pce board comes from the cutting machine design, but here are three people

Ureuhredow loss rod Pce msternalashe Pcg carer fr the op anherna dein, Pce anema deson generallyyusts micro and large semiconductor lasers have high power and power,
while other semiconductor lasers have high power and power, thanks to Mteab aeER-4, which leads to a lower cost per semiconductor device because the thickness is only 0.27mm,
and the thickness of the PCB material is also only 0.27mm. At the same time, attention should also be paid to the loss and connection performance of the device.
Mds PCB migptin ptch ateieguires attfon to line width precision control.

The radar PcB design method uses a non-electrically coupled waveguide or inductor design.
The spacing of the radar PcB is fixed, the same as the spacing of the antenna. mdsr Pc8 layer FR-4 material is used as a wire connection, and Pomer material is used as a wire connection.
The radar PC material used in this SiN antenna design is an ultra-low loss Pcp material that reduces loss and increases antenna radiation.
Increasing the material thickness will slightly increase the impedance of the radar PC, but it will also reduce the effect of copper foil roughness.
There are no other problems when increasing the narrowband width, but the processing accuracy and positioning accuracy of the radar need to be considered.

The design method is simple, so the width of the designed component is equivalent to the width of the radar PcB component.
Theoretically, these components are not made of PcB material, but of unknown PcB material. This design method greatly improves the design accuracy,
Increases the design complexity, and reduces the volume of the radar module, but the disadvantage is that the cost is high and the processing of the radar PCB is more complicated.

The unique advantages of 77GHz millimeter-wave radar sensors make them an indispensable part of automotive driving, and 77GH279GH2 radar sensors with wider bandwidth and higher resolution are gradually becoming mainstream. For various radar sensor design schemes, the characteristics of radar PCB materials largely determine the performance of radar sensor antennas.

Millimeter-wave radar PCBs can drive autonomously, but they require multiple elements, including circuit materials that can provide stable performance for electronic devices and circuits with frequencies above 77GHz. For example, in ADAS applications, circuit materials are needed to support the design of transmission lines for microwave and millimeter-wave signals at 2477 or 79)GHz to minimize losses while providing consistent repeatability over a wide operating temperature range. Fortunately, Roers’ circuits have the same performance required for ADAS applications from microwave to high-frequency millimeter-wave bands.

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As part of ADAS safety, vehicles are equipped with various sensors including cameras, LiDAR, and radar systems.
Currently, various radar systems are used as part of ADAS. FMcW signals are widely used because of its high efficiency in recording vehicles, images, and single or multiple targets.
Atomic radar sometimes uses nanotechnology and Nb and operates at 24GHz. 24 GHz narrowband vehicle radar occupies 200 MHz range, from 2405 to 2425 GHz,
While the total bandwidth of 24 GHz radar is 5 GHz, from 2165 Gmz to 2665 GHz. New 24 GHz vehicle radar systems are able to effectively detect short-range traffic and can be used for rear detection, etc.
UV8 vehicle radar system has been designed with higher range detection functions such as lane keeping radar, forward signal warning (FcW) and automatic emergency braking (AEBL)

Johannesburg, its micro communication system is designed to take advantage of the “underband” spectrum: including 24 GHz access,
The power density of the vehicle radar system is increased, and it is able to simulate wet detection, with a 360° reflection surface te doue,
With frequencies of 77 and 79 GHz radar. The 24 GHz UNE radar system is not used for psn According to the conditions set by the Eisl ndfcC,
It will be used in Europe and the United States in stages and will be replaced by higher frequency 77GHz and 79GHz radar systems.
The 77GHz and 79GHz radars will be used as functional modules for autonomous driving in the form of Scme

2sds is another important component of electronic technology, and the vehicle must be surrounded by different types of sensors,
So it must be continuously computer-assisted driving systems (DSTA) designed to ensure the safety of the vehicle and other passengers, which may include different passengers.
The driver will use sensor information from many different sensors for perception and convert it into a safe and comfortable driving experience

The selected satellites will be tested before and after launch to determine their quality and launch time,
As well as their launch frequency and launch cost, including Rogers’ ro3000, rc4000 and Kagp: Garma 4395 satellites, which have the power and stability required for RF to mmWave transmission.

The power factor of the circuit decreases as the frequency increases, especially at 77 and 79 GHz,
Because these wavelengths are very small and have very small transmission losses.
The power factor of the band is differential, integral and integral wave, so the power factor and transmission loss of the circuit are comparable to those of small circuits
Such as R03003 Gamms and ro4930 Gamma lamnste, so the power factor and transmission loss are comparable to R03003 Gamms and ro4930 Gamma lamnste,
So the power factor and transmission loss are comparable to R03003 Gamms,
While having very small transmission loss comparable to R03003 Gammsst millimeter wave signal Figure 51 Ro4g0’s insulation material is very suitable for millimeter wave applications.
It is also a reliable and low-cost alternative to traditional PTe-based laminates. The insulation constant of f4930 layer is 3.2 at 77 GHz. oPo?
reverse copper foil eliminates the insertion loss of no4g30 layer at 77GHz, and the insertion loss value is 2.2db per inch

The excellent electrical and mechanical properties of m300 and m400 are comparable to the insulation material of m440.
The bonding layer is connected and operated properly with kow kss Dicuit chsadensis st79 GH:.
These key circuit elements will play a role of repeat and recovery, and protect the sensor to transmit the car’s cnbcard processing data, thereby ensuring the safe driving of the vehicle

Pe crolitis a polessiond manvicunr of miimeerwie nadw PcB At greset, ZBPCB has matured and produced 24G milmetrmave ndu PcB nd77G miimetarwav pc,
If you need to re-purchase PcB manufacturers, please contact ZBPCB

Evious: Rogers RO4350B and FR4 Hybrid press Pas