Simple 2.4Ghz antenna

RE: Simple 2.4Ghz antenna

joedamato — Mon, 09 Jan 2017 13:00:15 GMT

Yeah.. bug. But really, thanks a lot awneil. See you

RE: Simple 2.4Ghz antenna

awneil — Mon, 09 Jan 2017 10:55:19 GMT

Hmm... the forum says, "only one answer per user is allowed" - but, by converting a Comment to an Answer, I now have TWO Answers on this thread!!

RE: Simple 2.4Ghz antenna

awneil — Mon, 09 Jan 2017 10:53:27 GMT

Oops - I pressed the wrong 'Convert to answer' button - and can't see any 'Undo'...

RE: Simple 2.4Ghz antenna

joedamato — Mon, 09 Jan 2017 10:45:39 GMT

It seems to fit perfectly, it is what I am looking for. It is UART and not SPI but it will do. I will be able to find a SPI module. Thanks a lot awneil, you nailed it. Care to convert your comment into an answer so that I validate it?

RE: Simple 2.4Ghz antenna

awneil — Mon, 09 Jan 2017 09:22:40 GMT

IF you want short time to market, then you should definitely get a module. There is significant design experience, expertise, & effort required to get the PCB design correct - particularly for the RF part.

To be honest,the links I posted aren't the kind of module you'd use in a product - they were just the first hits on google. They are for the prototyping stage. You will still need them (or something similar) for this stage!

For production, you'd be looking at something like this: www.mouser.co.uk/.../

RE: Simple 2.4Ghz antenna

joedamato — Mon, 09 Jan 2017 08:48:09 GMT

You have SCK, MOSI, MISO pins. So do I on the cortex A9. So, I don't see where the problem is actually. Correct me if I am wrong, but your transceiver already has all the logic put together (i am not buying a single 2.4Ghz SMT/SMD antenna, so I just need to put it according to your recommendations on the PCB and that is it. Isn't it? (because this is what I need at the end of the day: short time to market, but without a module.)

RE: Simple 2.4Ghz antenna

RK — Sun, 08 Jan 2017 21:42:04 GMT

+1 for buying a module.

What confuses me is what you want to connect the SPI interface to. What do you

RE: Simple 2.4Ghz antenna

awneil — Sun, 08 Jan 2017 18:33:53 GMT

I would recommend that you might start with something like this:

www.coolcomponents.co.uk/transceiver-nrf24l01-module-with-rp-sma.html

Or this:

www.coolcomponents.co.uk/nrf24l01-module.html

Then you just have to connect-up the SPI & power ...

RE: Simple 2.4Ghz antenna

joedamato — Sun, 08 Jan 2017 18:25:04 GMT

@awneil I am actually willing to burn some cash :) So maybe I will brilliantly fail, but I am excited about it :D

RE: Simple 2.4Ghz antenna

awneil — Sun, 08 Jan 2017 15:00:24 GMT

it can be put on a pcb, has a spi interface (to connect to the cpu via a copper trace) and we can submit it the data to send in the air.

Correct.

Is it what I should buy?

That is an entirely different question! We do not have enough information to answer that.

However, from your original question, I would surmise that you have little or no experience in this area; so buying a chip is unlikely to be a good choice - you would probably be better to buy a module...

RE: Simple 2.4Ghz antenna

joedamato — Sun, 08 Jan 2017 11:45:15 GMT

I think www.nordicsemi.com/.../nRF24L01P is what I am looking for.

If I am correct, it can be put on a pcb, has a spi interface (to connect to the cpu via a copper trace) and we can submit it the data to send in the air.

Is it what I should buy? or am I mistaken?

RE: Simple 2.4Ghz antenna

awneil — Fri, 06 Jan 2017 17:54:48 GMT

It should be connectable to an ARM Cortex-A9 cpu via spi or uart

That makes no sense whatsoever!

An antenna simply couples an existing, modulated radio signal from the PCB (or cable) to the surrounding environment - SPI, UART, etc are not radio signals!!

It sounds like what you are looking for is not just an antenna, but also a radio transmitter...?

What is the best product in the NS range

NS is not an antenna manufacturer - so there aren't any! They do, however, make some radio transceiver chips - which is, perhaps, what you're really looking for?