Simple 2.4Ghz antenna

[joedamato]

Hi,

We need a 2.4Ghz smd antenna, not to emit bluetooth but a in-house protocol we are testing. It will need to fit on a pcb and have good performance, and production ready (low cost enough). Think smartphone/tablet/thin devices.

Ideally, it may be set to lower the emitting range; but that is a bonus.

It should be connectable to an ARM Cortex-A9 cpu via spi or uart (or better?)

The setup, security, message format shall be defined by us. The antenna shall just transmit it.

What is the best product in the NS range that would fit best?

Thanks

[awneil]

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?

[joedamato]

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?

[awneil]

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...

[joedamato]

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

[awneil]

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 ...