Radar sensor Forum Discussions

I have an BGT60TR13C sensor,  and my radar SDK version is v3.2.1, it's only have presence detection and segmentation  example apps,  is radar SDK(v3.2.1)  has capable(APIS supported or existing algorithm) to get  rate & breathing rate? and would you share me the example codes?

Hello i use Radar fusion GUI do recording and get the xx.raw.txt data.

# Are_Rx_Antennas_Interleaved = 1
# Modulation_Type_Enum = 1
# Chirp_Shape_Enum = 0
# Lower_RF_Frequency_kHz = 6.0238e+07
# Upper_RF_Frequency_kHz = 6.0762e+07
# Sampling_Frequency_kHz = 1000
# ADC_Resolution_Bits = 12
# Are_ADC_Samples_Normalized = 1
# Data_Format_Enum = 0
# Chirps_per_Frame = 64
# Samples_per_Chirp = 64
# Samples_per_Frame = 12288
# Chirp_Time_sec = 6.89875e-05
# Pulse_Repetition_Time_sec = 0.000505637
# Frame_Period_sec = 0.1

# Frame_Number = 19491
0.4884
0.484005
0.477167
0.47326
0.477656

i know the data (0.484005) from analog signal do ADC convet it to value in [0, 1] in default setting.

while i have some question about the raw data.

=> first question about the data, what does the value 0.484005 or 0.477167 means?

does it means the  amplitude of the size in analog signal after convert to digtial signal?

=> second question, does the radar sensor data can convert to point cloud data, if yes, how can i do that with SDK api.

thanks

Dear Infineon Community,

I am a researcher at the Universidad Politecnica de Madrid. I am currently uing the radar sensors BGT24MTR11. I have designed some PCBs with a radar system based on the chip BGT24MTR11. I have encountered a problem measuring the output power at the TX, TXX outputs. I measure -15 dBm, in stead of the 10 dBm written in the datasheet and application notes. I explain below the techniques followed to carry out the measurements.

To measure the putput power at TX and TXX ports of BGT24MTR11, the TX and TXX outputs of one of these PCBs are not connected to an antenna. They are connected to an spectrum analyzer (using microstrip line, a connector and a cable). In more detail, the connection is TX output - matching network presented in pag 20 of the datasheet of BGT24MTR11 - 50 Ohm microstrip line (2 cm long) - 50 Ohm southwest connector - Cable - Spectrum Analyzer.

-The stack-up of the PCB is the same as the one presented in pag 20 of the datasheet of BGT24 MTR11 (0.254 mm layer of Ro4350B).

-The 50 Ohm transmission line is simulated. The losses introduced are around 0.2 dB in the frequency band.

-The connector is measured. The losses introduced are smaller than 1 dB in the frequency band.

-The cable is measured. The losses introduced are smaller than 0.5 dB in the frequency band.

-The complete system (including matching network, transmission lines and connectors) is simulated. The losses are smaller than 1.5 dB in the frequency band.

-The resolution bandwidth of the spectrum analyzer is set to 8 MHz.

Using this configuration,

-I bias the BGT24MTR11 with 3.3 V.

-I configure the chip through SPI according to pag 17 of the datasheet. I use the configuration word 0x0008.  I observe that the current consumption changes from 130 mA to 170 mA (approximately).

-At the input of the VCO (fine and coarse pins) I insert a DC voltage generated with an external source. I observe a power of approximately -15 dBm in the spectrum analyzer. The output frequency varies with the  voltage at the input of the VCO (from 21.8 GHz at 0.5 V to 26.8 GHz at 5 V).  There is no frequency where the output exeeds -10 dBm.

I have tried to configure the chip with different words. For instance, using 0x000F I observe that the output is reduced 9 dB (I measure approximately -25 dBm). I have also tried in the switch off configuration, measuring a power of approximately -50 dBm. Thus, it seems that the chip is being programmed correctly.

I have tried to read the output power sensor as explained in pag 18 of the datasheet. For this measurement I use the configuration words 0x00C8 and 0x0048. I read Vreftx = 1.87 V. Vptx = 2.3 V. Thus, DeltaV = 0.43 V. Thus, Pout ~9 dBm. It seems that the chip is providing the correct output power.

Can someone provide any hints about what can be going on? Has anyone encountered the same problem? Any other information I should provide, I will be happy to.

Thanks for the help.

Ignacio

Has anybody tried to install ifxdaq on a nvidia jetson nano?

I gave it a shot but I got an error which says the platform was not supported. Any workarounds?

Hey

Is there a way to view the recorded radar data captured in the "Radar Fusion GUI" in matlab signal analyzer app?

They are saved as a .json and raw.bin files which matlab can't read 

thanks 🙂

Hi

I am having trouble uploading the firmware for my BGT60TR13C with attached demo board

When it arrived and I plugged it into my pc a green blinking LED was on, I then tried to flash the firmware in "Radar Fusion GUI" and since then the green LED has stopped blinking and the flash failed

The PC recognizes something is plugged in because of the noise it makes when i connect the board via USB, however trying to use the "RDK-TOOLS UpdateFirmware" tool the error EXIT 0 (or sometimes 4): Cannot Find Device

I want to try to reset it by conecting the 3.3v pin to the Erase pin, but I'm unsure how to connect them

If anyone could point me in the right direction that would be great

Cheers

recently, i bought one device of BGT60TR13C.

i prefer do some breathing & heart rate research by using this mmwave device. does this device can provice some guide or method for the related feature.