January 2014

DocID025507 Rev 1

1/17

AN4392

Application note

Using the BlueNRG transceiver under ARIB STD-T66

in the 2400 – 2483.5 MHz band

By Ugo Raia

Introduction

The BlueNRG is a very low power Bluetooth low energy (BLE) single mode network

processor, compliant with Bluetooth specifications core 4.0. The BlueNRG can act as

master and slave.

Bluetooth low energy technology operates in same spectrum range (2400 - 2483.5 MHz,

ISM band) as classical Bluetooth technology, but uses a different set of channels. Instead of

Bluetooth’s 79 channels in the 1 MHz band, low energy technology has 40 channels (37

data channels + 3 advertising channels) in the 2 MHz band. Within the channel, data is

transmitted using GFSK (Gaussian Frequency Shift Modulation). The bit rate is 1 Mbit/s,

and the maximum transmitting power is 10 mW. Further details are given in volume 6, part A

of the Bluetooth Core Specification V4.0.

This application note outlines the expected performance when using the BlueNRG under

ARIB STD-T66 in the 2400 to 2483.5 MHz band.

For details on the regulatory limits in the 2400 - 2483.5 MHz frequency band, please refer to

ARIB STD-T66 V2.1 regulations [2]. These can be downloaded from

www.arib.or.jp/english/html/overview/rt_ej.html.

www.st.com