nRF52832 WLCSP CIAA, RF do not work!

[zwl496777001]

I have made a HDI 4-Layers PCB.  I referenced the example PCB, but my board it do not work.

The softdevice is:s132_nrf52_6.0.0_softdevice.hex

The example code is: ble_app_uart.

The example code runs normally ,but there is no RF signal.

My board:

My schematic:

My PCB:

[awneil]

Note that designing radio PCBs is a specialist subject - it requires specialist experience, and you will need specialist (expensive) tools & test equipment to get it right.

Not to mention all the approvals & certification testing ...

That's why doing bare chip designs is only really viable if you're going to be manufacturing in huge volumes - many tens or hundreds of thousands, or more.

I think you would be better off using a module!

[zwl496777001]

OK.I will try to use a module.Thank you ,awneil!

[awneil]

I think you will find that a whole lot easier!

Nordic have a list of 3rd-party modules using their chips:

https://www.nordicsemi.com/Software-and-Tools/3rd-Party/3rd-party-modules

Even before using a module, you should spend time with a Dev Kit to gain familiarity with the product & the tools...