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Dragino LORA盾 - 支持433M頻率
資料來源：https://www.seeedstudio.com/Dragino-LoRa-Shield---support-433M-frequency-p-2672.html
Description
The Dragino LoRa Shield is a long range transceiver on a Arduino shield form factor and based on Open source library.The LoRa Shield allows the user to send data and reach extremely long ranges at low data-rates.It provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption.
The LoRa Shield based on RFM98W targets professional wireless sensor network applications such as irrigation systems, smart metering, smart cities, smartphone detection, building automation, and so on.
Using Hope RF’s patented LoRa™ modulation technique the LoRa Shield can achieve a sensitivity of over -148dBm using a low cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry leading link budget making it optimal for any application requiring range or robustness. LoRa™ also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity and energy consumption.
These devices also support high performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The LoRa Shield deliver exceptional phase noise, selectivity, receiver linearity and IIP3 for significantly lower current consumption than competing devices.
Features
Compatible with 3.3v or 5v I/O Arduino Board.
Frequency Band: 433 MHZ
Low power consumption
Compatible with Arduino Leonardo, Uno, Mega, DUE
External Antenna via I-Pex connector
Specificaiton
168 dB maximum link budget.
+20 dBm - 100 mW constant RF output vs.
+14 dBm high efficiency PA.
Programmable bit rate up to 300 kbps.
High sensitivity: down to -148 dBm.
Bullet-proof front end: IIP3 = -12.5 dBm.
Excellent blocking immunity.
Low RX current of 10.3 mA, 200 nA register retention.
Fully integrated synthesizer with a resolution of 61 Hz.
FSK, GFSK, MSK, GMSK, LoRa™ and OOK modulation.
Built-in bit synchronizer for clock recovery.
Preamble detection.
127 dB Dynamic Range RSSI.
Automatic RF Sense and CAD with ultra-fast AFC.
Packet engine up to 256 bytes with CRC.
Built-in temperature sensor and low battery indicator.
Part List
1 x LoRa Shield (support 433M frequency)
1 x 433MHz Antenna
Related Products
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Technical Details
| Dimensions | 109mm x 69mm x 35mm |
| Weight | G.W 45g |
| Battery | Exclude |
Part List
| LoRa Shield (support 433M frequency) | 1 |
| 433MHz Antenna | 1 |
描述
該Dragino LORA盾是一個Arduino的盾牌的外形很長的距離收發器和基於開源library.The LORA盾允許發送數據，並達到極長的範圍內以低data-rates.It提供超長距離擴頻用戶通信，高抗干擾性，同時最大限度地減少電流消耗。
基於RFM98W的LORA盾針對專業的無線傳感器網絡應用，如灌溉系統，智能電錶，智能城市，智能檢測，樓宇自動化等。
希望使用RF專利LORA™調製技術的LORA盾可以達到使用低成本的晶體和材料清單超過-148dBm的靈敏度。高靈敏度與集成+20 dBm的功率放大收益率行業領先的鏈路預算使得它最適合於要求範圍或穩健性的應用程序相結合。 LORA™還提供了阻塞和選擇性，比傳統的調製技術顯著的優勢，解決範圍，抗干擾性和能量消耗之間的傳統設計折中。
這些器件還支持高性能的系統，包括WMBUS，IEEE802.15.4g（G）FSK模式。該LORA盾提供卓越的相位噪聲，選擇性，接收器的線性度和IIP3為電流消耗比同類器件降低顯著。
特徵
- •使用3.3V或5V的I / O Arduino板兼容。
- •頻段：868 MHZ / 433 MHZ（預配置的工廠）
- •低功耗
- •使用Arduino的萊昂納多，烏諾，兆豐，由於兼容
- •通過I-PEX連接外部天線
規範
- •168分貝最大鏈路預算。
- •+20 dBm的- 100毫瓦不斷RF輸出與
- •為+ 14dBm高效率PA。
- •可編程比特率高達300 kbps的。
- •高靈敏度：低至-148 dBm的。
- •防彈前端：IIP3 = -12.5 dBm的。
- •優異的阻塞抑制免疫力。
- •10.3毫安，200的低電流RX登記nA的保留。
- •完全集成的合成器，具有61赫茲的分辨率。
- •FSK，GFSK，MSK，GMSK，LORA™和OOK調製。
- •內置位同步時鐘恢復。
- •序言檢測。
- •127分貝動態範圍RSSI。
- •自動射頻檢測和CAD具有超快的AFC。
- •數據包引擎到與CRC 256字節。
- •內置溫度傳感器和低電量指示燈。
零件清單
- •1個LORA盾（支持433M頻率）
- •1個433MHz的天線
相關產品
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