Where can find CC1310 @ 433MHz Reference design files

Hi Sverre,

On the same topic,
The antenna design in this ref design contains a basic element which is then replicated (besides the track that connects the antenna to feeding point)
Is there a chance to get critical parameters regarding this antenna design, like the width and length of the tracks, VIAs' internal diameter, distance between tracks, etc. It's hard to obtain these parameters in an accurate way from gerber files.


Thank you in advance.

.art files can be opened with any gerber viewer/editor software, i.e. viewMate (the free version should suit your needs)

brd file: Cadence PCB design file
art files: gerber format

Hi Sverre

Is this Ref Design completed? 

thanks,

Steve

CC13xxEM-7XD-4251_1_1_0 is the latest revision. This is available in this thread

Hi TER,

Followup question, I am recalculating characteristic impedance of antenna feed track based on new stack height of my 2-layer board.

What is the current stack height for the 4-layer board design, and the characteristic impedance? I understand my trace width and space gap between track and GND will change, but are they the only ones that will need changed from the previous design? DO I also need to change track width in the balun/filter circuit also?
 I came across this documentation on adapting TI reference designs to new stack-up, and found it really helpful 

Thanks!

When you change the stack-up you typically have to change the width of tracks that are 50 ohm transmission lines. One only 50 ohm line is the one towards the antenna connector.

That said the parasitics change with change in the stack-up and some of the component values may have to change. If you have ADS or similar you can simulate the change in impedance as a way to try to predict the change.

Thanks TER for the inputs. Where can I find the current stack-up of the 4-layer design, so I can compare difference in impedance when I change to 2-layer?

So basically the balun/filter part will see no trace width change, only the 50-ohm transmission line going to the antenna, plus the matching network (L15, R13, and L16), is this right? I am using a Line calculator similar to ADS.

Thanks in advance....

Dear TER,

I Don't know much about designing a matching circuit and 50ohm Transmission line. Can you please help me designing this Things. 

thank you

Hello everyone,

I managed to design our custom board using the 433MHz reference design in this post.

But I am having problem with firmware.

I am using as reference the EasyLink API and sensor network example.

Modifying the RF setting for frequency of 433MHz has the code stoping somewhere in EasyLink.c in line:

while(pDataEntry->status != DATA_ENTRY_FINISHED);

I see in the errata that other frequencies like 433MHz are not yet fully supported, so I thought I needed some help on how

to configure the EasyLink and RF settings properly in firmware, to work properly at 433MHz.

Thank you in advance!

-Ian

curious, what is .loDivider? (i.e. what property does it represent)

edit: Local Oscillator, part of the RF engine's guts I assume...

Hi,

I made a board using the antenna design first mentioned in this thread - CC13xxEM-7XD-4251_1_1_0.zip

At the time I used the Board #4 from CC-Antenna-DK2 (page 35) as a reference for L15, L16 and R13, because it was said that the antenna design found in the beginning of this thread was characterized in that document, and I reasoned that Board #4 was it. The values are:

L15 = Z13 =  5.1pF

L16 = Z15 = 27nH

R13 = Z14 = 2.5pF

Only now, revisiting this thread, looking for some more info, I saw the recommended values as in the quoted answer. How incorrect are those values I used? Should I change them?