nRF24L01+ Antenna and Board Design

[mej7000]

I would like to tightly integrate a nRF24L01+ with my microcontroller. I have read as much as I could, and copied as closely as I can, but the best layout required moving components from the examples. I tried to move components I thought might be less sensitive to being moved... I would love to get a more experienced opinion before I run boards. Any feedback is appreciated. Thanks!

Instead of multiple via's separating the antenna from circuit would it be better to cut a slot to more thoroughly separate the antenna or do the via's add something?

0402 components throughout. 

FA-20H 16.0000MF12Z-AC3 oscillator

I got the antenna design from: https://www.cypress.com/file/136236/download page 10

I plan to run boards from JLCPCB: JLCPCB specs

[mej7000]

Awesome! Thanks!

[mej7000]

choose ​​Murata Crystal​ XRCGB16M000FXN00R0 ​​, which I think meets the specs, however when I calculate C1/C2 I get a value of about 10pF. I expected to get a value closer to the reference Cap value: 22pF. I think the lower Cap value is because the 6pF Crystal CL is  relatively low, but I want to make sure I've got it right.

Did I do something wrong here or does this look ok?​   -Thanks!

​Ccap = 6pf * 2 - (~1.5pf)​ = 10.5pf

XRCGB16M000FXN00R0
Manufacturer:​ ​​​Murata
Load Capacitance:​ ​6 pF
Frequency:​ ​16 MHz
Tolerance:​ ​40 PPM
Frequency Stability:​ ​25 PPM, 30 PPM
ESR:​ ​200 Ohms
Drive Level:​ ​100 uW

p79e-806516.pdf

[ketiljo]

The value of the load capacitors are dependent only of the CL value of the crystal. 22 pF caps are for a 12 pF crystal. 

You can find the crystal spec in the datasheet: 

Note that ESR should be less than 100 ohm. And min CL is 8 pF, sorry for saying 6 - 7 pF earlier. 

This excludes the smallest packages as ESR will increase when the crystal gets physically smaller.