Hi,

I am trying to put together a wireless system fo the first time. I was
told to use a wireless chip nRF24z1 for both transmitter and receiver.
I need to layout the PCB for this chip first. So, I found the
following note

http://www.nordicsemi.com/files/Product/applications/nAN24-09_nRF24Z1_RF_layout_rev1_0.pdf

But I can not understand the following issue

 The note says that all layouts should be fitted with a single ended
connection to a 50ohm antenna by using a differential to single ended
matching network. What does it exctly mean?

Thanks
John

"john" <c...@hotmail.com> wrote in message 
news:a...@c16g2000yqd.googlegroups.com...
> Hi,
>
> I am trying to put together a wireless system fo the first time. I was
> told to use a wireless chip nRF24z1 for both transmitter and receiver.
> I need to layout the PCB for this chip first. So, I found the
> following note
>
> http://www.nordicsemi.com/files/Product/applications/nAN24-09_nRF24Z1_RF_layout_rev1_0.pdf
>
> But I can not understand the following issue
>
> The note says that all layouts should be fitted with a single ended
> connection to a 50ohm antenna by using a differential to single ended
> matching network. What does it exctly mean?
>
> Thanks
> John

The device has ANT1 / ANT2 differential antenna connection pins.

The network comprising L1, L2, L3, C5 and C6 connects this to the 
single-ended "RF" port.

Hi,
Thanks. what is single ended RF port.

John

"john" <c...@hotmail.com> wrote in message 
news:8...@y17g2000yqd.googlegroups.com...
> Hi,
> Thanks. what is single ended RF port.
>
> John
>

When you have one side of the circuit live and the other is ground - like 
coax - that's single ended.