CN0566 EVK 14GHz

You could operate it at 14 GHz by changing out the LPF and BPF filters.  There should be other footprint compatible filters from MiniCircuits that will suppress the lower image and allow through the upper image.   So look through this paper, and make the necessary changes:  https://www.analog.com/media/en/reference-design-documentation/reference-designs/cn0566.pdf

1.  Yes, you can connect up a different transmit antenna for 14 GHz

2.  The integrated phased array antenna panel only operates between about 10 and 11 GHz.  However, you can solder in SMP connectors and then use SMP cables to connect up to your own 14 GHz phased array antenna.  

3.  Do you mean comms receive, or radar receive?  Many factors impact the range.  You would have to run an analysis for your signals and setup--perhaps using the Matlab radar toolkit, etc.  

Hi Jon.Kraft,

Thank you for your message.

CN0566 EVK Ordered & waiting for EVK Dispatch details, Could you please share the updated Schematic, BOM, PCB Design files, Gerber data & etc...

I appreciate your understanding.

Hi Jon.Kraft,

Received EVK-CN0566, Based on Video we are trying to Cable Interfaces. one of the cable not Matching with Videos like PC Interface to Linux Board cable, Cable one end USB A and other side Micro USB. but Linux Board interface connector not matching with Micro USB Connector cable. Please confirm. it looks like a Micro HDMI. Encircled with pics.

It's Cleared. 

We have Tested with HB100 & working, How to test with Vivaldi Antenna, Could you please share us any videos.

You can find videos and example code on this here:  www.youtube.com/playlist

Hi Jon.Kraft

 I'm in need of detailed specifications for the CN0566 EVK's,  Vivaldi & HB100 Antenna optimal performance for my project. Could you provide the following information:

S11 (Return Loss)  :
VSWR (Voltage Standing Wave Ratio) :
Gain :

Range
Half Power Beamwidth (HPBW)
Losses (including insertion loss)
Sensitivity
Radiation Pattern
Polarization
Impedance

If there are any other important parameters that I should be aware of, please do share. Your assistance in this matter would be highly appreciated.

when running Phaser_findHB100.py getting following error any views on how to debug. 

This error is because either your Pluto is not plugged in, or the Pluto firmware is not configured to be dual transmit/receive, or there is an issue with your SD card.  

Hi Jon.Kraft,

1. Phaser Plot : CN0566 & VIVALDI Antenna when both opposite placed, the Angle detecting up to one meter. After increasing the gap more than a meter plot shown 40 degrees constantly even angle is less. Please comment and suggestion. 
2. When trying to read the object echo is not detecting in phaser GUI. 
3. Can we connect two Tx Antennas at a time & functioning ?
4. After applying 2D FFT in RAW data the 2D array ( 900,num_chirps) is plotted with using of imshow(). Which basis these points are plotting.
5. How to map these values (900,num_chirps) to range and velocity in the range doppler plot, when the target is detected and track the target by printing the range and velocity in this scenario
6.  When target is not detected, Plot dividing two parts and receiving unwanted noise, how to eliminate ? as shown in pic.

Hi Jon.Kraft,

The CN0566 evaluation kit (EVK) focuses on signal steering in the receiver (Rx) path rather than the transmitter (Tx), why not in Tx  just curiosity asking the Q?

The array is receive only for a couple of reasons:   1.  Many arrays commonly have more receive elements than transmit elements, as receiving an unknown signal generally requires more antenna elements than transmitting a known signal.  2.  This board is primarily an educational learning platform, and receiving a signal is much more visually intresting than beamforming a transmit signal and not being able to see where it has gone.  3.  Finally, it is less power and cost to receive.  It is because the transmit amplifiers use more power and cost more.  

In reply to your list of questions on 4/18, let me emphasize the second point that I made above.  Phaser is a learning/prototyping platform for phased array radar.  Many of your questions are just things that need to be learned to get a radar running.  I suggest getting a radar textbook and going through chapters, while trying to implement them on Phaser.  I think you will learn a lot, and it will prepare you for building your own real radar system.  

For the questions that do apply to Phaser:  3.  You can connect two transmitters, but only one is active at a time.  This is a switched transmit system that is used in virtual arrays.    6.  Yes, I think that divergence is due to some small timing mismatch between the sample clock and the multi chirp pulses.  You can calibrate that mismatch out.  Or try increasing the sample rate.  

The array is receive only for a couple of reasons:   1.  Many arrays commonly have more receive elements than transmit elements, as receiving an unknown signal generally requires more antenna elements than transmitting a known signal.  2.  This board is primarily an educational learning platform, and receiving a signal is much more visually intresting than beamforming a transmit signal and not being able to see where it has gone.  3.  Finally, it is less power and cost to receive.  It is because the transmit amplifiers use more power and cost more.  

In reply to your list of questions on 4/18, let me emphasize the second point that I made above.  Phaser is a learning/prototyping platform for phased array radar.  Many of your questions are just things that need to be learned to get a radar running.  I suggest getting a radar textbook and going through chapters, while trying to implement them on Phaser.  I think you will learn a lot, and it will prepare you for building your own real radar system.  

For the questions that do apply to Phaser:  3.  You can connect two transmitters, but only one is active at a time.  This is a switched transmit system that is used in virtual arrays.    6.  Yes, I think that divergence is due to some small timing mismatch between the sample clock and the multi chirp pulses.  You can calibrate that mismatch out.  Or try increasing the sample rate.  

Hi Jon.Kraft 

Thank you for your support,

We are trying to configure the Phaser EVK with Matlab, Installed Matlab and the toolboxes and add-ons required for the EVK, and finished the Communication toolbox support package for the Adalm-Pluto SDR configuration steps for EVK. While verifying the connectivity of the Pluto SDR, Unable to solve the below error while running the below command

 “sdr = adi.AD9361.Rx”

Error using adi.AD9361.Rx

The specified superclass 'adi.common.Attribute' contains a parse error, cannot be found on MATLAB's search path, or is shadowed by another file with the same name. Could you please follow the pic for the error?

.

This error is because you did not install the "Communications Toolbox Support Package for Analog Devices ADALM-Pluto Radio".   Please make sure you are following all of the steps here:

https://wiki.analog.com/phaser_matlab

Hi Jon.Kraft,

Thank you for your support,

Today Matlab to Python shifted the code while Converting the process unable to connect the SDR ( SDR Blue Light Continually Glow, Not blinking ), Even the Pluto SDR folder is not visible in File Explorer, Could you please support what is the root cause, here are the pics for your immediate understanding.

Now it's working, followed by the below link.

Pluto does not start ready led does not Blink - Q&A - Virtual Classroom for ADI University Program - EngineerZone (analog.com)

Hi Jon.Kraft,

Thank you for your Support.

CN0566 EVK Phaser Board Detection is successful up to 100 meters but while testing we are experiencing latency of 3 sec ( Delay ) Detecting the object in GUI.

Present this EVK is using the Raspberry Pi4 board instead of that can we use Raspberry Pi5, to minimize the latency or Delay? What are the Challenges of upgrading to Raspberry Pi5 Could you please confirm in this regard?

If not upgrading to Raspberry Pi5 Board, what are other ways to reduce the latency or delay in object detection?

Thanks & Regards
Purna

We are working on a new device tree to be able to use the Rasp Pi 5, but it will not be ready for a few months.  However, it will be much faster to not use the raspberry pi.  Instead, connect Pluto to your computer, and connect ethernet from computer to the Phaser's Rasp Pi 4.  Then, run Python/Matlab on your computer.

https://wiki.analog.com/phaser_matlab#getting_started_and_setup

Even so, there will be some delay.  In a real radar system, the processing is handled by an FPGA or DSP chip.  Phaser is meant only for education and exploration purposes, not for real time radar use.  

Yes, MATLAB works very well with Phaser.  See this link for more details:

https://github.com/mathworks/Phaser-Control-with-MATLAB/tree/main

Regarding question #2, please contact your Mathworks representative for their recommendations.

For question 3, follow the setup instructions here:  https://wiki.analog.com/phaser_matlab

Greetings,

Thank you for your prompt response.

As we strive to minimize latency in our project, could you advise on the feasibility of interfacing an FPGA with the current CN0566 EVK hardware to attain reduced latency and enhanced FPS? Your expertise on this matter would be highly valued.

Hi Jon Kraft.
Hope you are doing well!

We are presently working on "X-BAND PHASED ARRAY PLATFORM," and we require the schematic, design file, antenna related file and Gerber file for this project. Your assistance in this matter would be greatly appreciated.

Thank you!