• State
  • Locked Locked
  • Replies 0 replies
  • Subscribers 15 subscribers
  • Views 236 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Single Access Point / Many Target Devices Solution Advice

Abdulaziz Alghamdi
Prodigy 20 points
Other Parts Discussed in Thread: CC2591, CC1101, CC2540

Hello all,

I am having some issues deciding on what IC I should be using for my setup, and I would really appreciate your help. Here's what I am looking for:

Main Idea:
In a building, I want to have one powerful access point (in terms of transmitting), and many target devices (50-100 devices). It's a one-way communication between the access point and every target device. It's like a one-way paging system.

Access Point Requirements:
- Transmitting Range: 200m through one or two walls.
- Receiver: it doesn't matter.
- Size: it doesn't matter. I can use any antenna.
- Power Consumption: it doesn't matter. It will be hooked up to an outlet. 
- Data Rate: the lowest possible. This access point will only be sending ID numbers to target devices.

Target Devices:
- Quantity: I will have 50-100 devices.
- Transmitting Range: 10m will do for a different purpose that's not specified here. I will not send a signal received acknowledgment back to the transmitter.  
- Receiver: I just want it to receive the strong signal from the access point. 
- Size: Very important. I want it to be similar to the size of the RF2500 Target Board (http://www.ti.com/tool/ez430-rf2500t) or the CC2540DK-MINI Key (http://www.ti.com/tool/cc2540dk-mini). No long antennas. 
- Power Consumption: it will be using a coin cell battery.  

Preferences: 
- It would be great if the solution has reference designs. I'm not an expert in designing RF circuits, so I'll try to copy TI's designs and add to them.

So, what options do you suggest? I have tested the EZ430-RF2500 (2.4GHz), and it worked great, except for its range, of course. If I add a front end IC like the CC2591 and a better antenna to the access point , do you think that would be enough? I was also considering using CC1101 with 434MHz, as I assume it would give me a better range, but is that possible with a small antenna? How about the CC2540 Mini Kit, could Bluetooth work in this situation, after improving the strength of the access point with a front end IC? Please note that this is a one-way communication between the access point (transmitter) and every target device (receivers).

 Thank you in advance for all your help.

Kindest Regards,