What is the VSWR of nrf-52840 USB dongle?

[sumitranjan]

Dear Concern,

We were developing one of our products using nrf52840. We previously used the nrf-52840 USB dongle for the product. Now we were moving to nrf52840 chip based design. We took nrf52840 dongle as the reference for our RF circuitry. But we are not being to find what is the VSWR of nrf-52840 USB dongle? Can you please give us any insights on that?

Thanks in Advance,

Sumit Ranjan Chakraborty

[Priyanka]

Hi Sumit,

The VSWR will depend on your final product and your matching network, as this varies with design and we measure the reflection at the matching network and not at the antenna. You can measure this.

I will attach a document for something similar. We do not have these for the antenna on the Dongle, but this similar document could be helpful.

You can also take a look at this ticket

Small size 2_4GHz PCB antenna (1).pdf.

Best Regards,

Priynaka