pcb design

hey guys I am really very sorry I posted the wrong schematic.....the correct is this...

sorry fro the wrong one...this is the correct one

Are you following the TI reference design EXACTLY - it is very ambitious to try and do an RF pcb as your first project and unless you have access to expensive RF test equipment you will not get it to work unless you copy the precise track layout of the reference design and use exactly the same components.

If I were you I would consider using  a ready made Bluetooth module with the RF section already built and tested.

MK

yes I am using TI's reference design. I am working on a Bluetooth PCB not an RF PCB. I am making it simple by using just CC2541 chip and a temp sensor.

Is something wrong what I am doing..?

Designing board for RF is very difficult and I get the impression that you have very little experience. Google "rf pcb design" and read this link as well:

"www.ti.com/lit/an/swra367a/swra367a.pdf"

If you copy  a proven design exactly it may work but differences in pcb material and manufacture may still cause problems.

MK

thanks for you reply.....

the link you gave is not working...

I have no experience, first time I am doing a PCB project and I am alone, that's why I am bit concern about if am doing it right or wrong.

I will read about rf pcb design....but I am working on Bluetooth not on RF that's why I chose the CC2541 Bluetooth chip. there is no mention for rf pcb design....

The link works for me  if you take the quotation marks off - I had to put them in because E14 whinged, if it wont work for you then search for swra367a on TI's website.

Bluetooth = Radio

RF = Radio Frequency

If you read ALL the TI material (data sheets, app notes etc) about the CC2541 you will find a lot of discussion about the pcb design and the issues with aerial matching.

MK

On 09/19/2014 08:39 AM, Dushyant Kumar Singh wrote:

thanks for you reply.....

the link you gave is not working...

I have no experience, first time I am doing a PCB project and I am

alone, that's why I am bit concern about if am doing it right or wrong.

I will read about rf pcb design....but I am working on Bluetooth not on

RF that's why I chose the CC2541 Bluetooth chip. there is no mention for

rf pcb design....

Look on page 24 of the CC2541 datasheet, paying particular attention to

the components attached to pins 25 and 26.  Those caps and inductors and

antenna ARE an RF design.

Bluetooth operates in the 2.4 GHz ISM band.  Even if you exactly

duplicate the reference design, as mentioned earlier, you will probably

still have trouble due to differences in PCB material and thickness.

I would reiterate the earlier suggestion of using a pre-made Bluetooth

module, and connect it to your microcontroller with SPI, I2C, TWI, or

the like.

 

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I Google about RF PCB design and I got some material.....

So, whats your view about my PCB design....like its hard to make or in future I will have some difficulty about it..??

thanks Chuck Hubber...

yeah the difference will come in PCB materials......thanks for the suggestion..:)