Microchip RN2903低功耗长距离915MHz收发模块解决方案

Microchip公司的RN2903是基于无线LoRa技术的低功耗长距离和高组网功能的915MHz收发模块,采用LoRaWAN™协议堆栈,UART采用ASCII指令接口,RF接收灵敏度-146dBm,发送功率可调至+18.5dBm,IIP3=-11dBm, FSK, GFSK和LoRa技术调制,郊区覆盖高达15km,农村覆盖高达5km,工作电压2.1V到3.6V,温度范围-40°C 到+85°C,主要用在工业控制和监视,物联网(IoT),自动读表,家庭和建筑物自动化,无线告警和安全系统,机器对机器通信(M2M).本文介绍了RN2903通用特性和RF/模拟特性,框图,应用框图以及LoRa™ Mote演示板主要特性,电路图和材料清单.
The RN2903 is a fully-certified 915 MHz module based on wireless LoRa® technology.  The RN2903 utilizes a unique spread spectrum modulation within the Sub-GHz band to enable long range, low power, and high network capacity.The module’s embedded LoRaWAN™ Class A protocol enables seamless connectivity to any LoRaWAN compliant network infrastructure, whether public or privately deployed.  The module is specifically designed for ease of use, which shortens development time and speeds time to market.  LoRa technology is ideal for battery-operated sensors and low power applications such as IoT, M2M, Smart City, Sensor networks, Industrial automation, and more.
The RN2903 transceiver module features LoRaTechnology RF modulation, which provides long rangespread spectrum communication with high interferenceimmunity.Using LoRa Technology modulation technique,RN2903 can achieve a receiver sensitivity of -146 dBm.
The high sensitivity combined with the integrated+18.5 dBm output power amplifier yields industryleading link budget, which makes it optimal forapplications requiring extended range and robustness.
LoRa Technology modulation also provides significantadvantages in both blocking and selectivity comparedto the conventional modulation techniques, solving thetraditional design compromise between extendedrange, interference immunity, and low-powerconsumption.
The RN2903 module delivers exceptional phase noise,selectivity, receiver linearity, and IIP...