Schematic design for Custom board (NRF52833) - Direction Finding

[Venkat RAM]

Hai Team,

I have two question

1) From documentation nrf52833 soc supports upto 12 antenna, then Nrf52833 DK how the antenna is there in the array of antenna

2) Need a Schematic design for my custom board with mainly an array of matrix antenna

I need to know how to integrate the array of antennae with my custom board design

Thanks in Advance

Best Regards,

Venkat

[Kaja]

Hi,

sorry for the delayed response! 

Please have a look at the documentation: DF connectionless locator

1) Our reference antenna matrix has 12 patch antennas, the DF solution can be used with any other antenna matrix. 

2) If you need an antenna matrix for you're design you can produce one of our antenna matrix: 3443.PCA20054-Direction Finding Antenna Board 1_0_0.zip

or you can consider Insight SiP's AoA demo kit with antenna matrix (based on our reference design, therefor with 12 antenna) .

Best regards,
Kaja

[Venkat RAM]

Thanks for the response, kindly share the Schematic design for PCA10100 (NRF52833) 

I am working with an AOA approach

Best regards,
Venkat

[Kaja]

You will find this under downloads on the product page on our web site: https://www.nordicsemi.com/

Best regards,
Kaja

[Venkat RAM]

I find it, but it was the connection of a single antenna, I need a circuit design for an array of antenna

[Kaja]

Hi,

I sent you the reference design for the antenna matrix: 

Kaja said:

2) If you need an antenna matrix for you're design you can produce one of our antenna matrix: PCA20054-Direction Finding Antenna Board 1_0_0.zip

You must just connect the to design's together... with a connector on both boards to connect the RF path together. 

On the nRF52833 there is a radio matching network to transform the output impedance to 50 Ohm, so that the RF point is 50 Ohm so you can connect it to an antenna or an antenna matrix. 




Best regards,
Kaja

[Venkat RAM]

Thanks for the response

[Kaja]

You're welcome.