CC2544: Transmission distance and sensitivity of CC2544

Peggie

Part Number: CC2544
Other Parts Discussed in Thread: BLE-STACK

I use CC2544 as the 2.4G USB dongle for the Bluetooth keyboard, but the transmission distance is only about 3m in the actual scene. What parameters should I debug to increase the transmission distance and sensitivity? This is my schematic.

over 5 years ago

0 J Lindh over 5 years ago

TI__Guru 57865 points

Hi Peggie,

I am not certain what you mean with using CC2544 towards a Bluetooth keyboard. The CC2544 does not have any BLE-Stack software offering. What software is running on the CC2544?

0 Peggie over 5 years ago in reply to J Lindh

Intellectual 445 points

I use CC2544 on the USB dongle of 2.4G RF. The Bluetooth chip that matches it is on the Bluetooth keyboard. But the 2.4G transmission distance is only 2-3 meters. I tried to modify the capacitance of the peripheral circuit, hoping to increase the transmit power, but it does not increase the transmission distance.

0 J Lindh over 5 years ago in reply to Peggie

TI__Guru 57865 points

Peggie,

I do not understand what you mean from a software POV. Anyhow, i'm assigning this thread to the HW team as this seems related to the HW design. Please share the PCB layout if possible,

0 Simon J over 5 years ago

TI__Genius 11810 points

Hi Peggie,

Can you try to follow the steps described in this application report? http://www.ti.com/lit/pdf/swra603

-Simon

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CC2544: Transmission distance and sensitivity of CC2544