The part number of BLE antenna

Hi Guys,
I am a student and I bought the nRF52840 MDK USB Dongle for one of the course projects. could you tell me the part number of BLE antenna that was placed on this dongle?

thanks in advance.

Best regards
Peter

Hi, the chip antenna is ACA-2012-A1-CC-S. You can find the spec here: http://www.inpaqgp.com/rw_40b272d49797af2cc6cacf409f1a9df0