LR-FHSS Long-Range Frequency Hopping Spread Spectrum SUB-GHz and 2.4GHz 2-in-1 Communication Module Released

PublishTime： 2024-08-27 Article Source：G-NiceRF Official Website

Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) is a technology with strong anti-interference and high-capacity characteristics, capable of supporting a large number of terminal nodes. By improving spectrum efficiency, it can alleviate packet collisions and has uplink frequency hopping modulation capabilities to achieve better coexistence, spectrum efficiency, and sensitivity. The latest product trend from NiceRF is this LR-FHSS SUB-GHz and 2.4GHz 2-in-1 communication module LoRa1121.

LoRa1121 uses SEMTECH's LR1121 chip, an ultra-low power, long-range LoRa® ISM band transceiver and global 2.4GHz 2-in-1 communication module. LoRa1121 supports LoRa and (G)FSK modulation in the sub-GHz and 2.4G frequency bands, as well as Sigfox® modulation in the sub-GHz band, and long-range frequency hopping spread spectrum (LR-FHSS) in the sub-GHz, 1.9-2.1GHz, and 2.4GHz ISM bands. The LR1121 meets the physical layer requirements of the LoRaWAN® specifications published by the LoRa Alliance® while remaining highly configurable to meet the needs of different applications and proprietary protocols.

Now, let me slowly unveil the specific features of this module that are worth noting.

Multi-band compatibility, customizable frequency bands

Our module not only supports sub-GHz and 2.4GHz frequency bands but also covers the ISM band (1900MHz-2200MHz). Additionally, the module supports customizable frequency ranges, covering 150-960 MHz, to meet different application needs.

Support for these frequency bands enables our module to excel in various wireless communication applications. The sub-GHz band is commonly used for long-distance, low-power IoT devices, while the 2.4GHz band is suitable for high-speed data transmission, such as Wi-Fi and Bluetooth. Support for the ISM band provides a broader frequency selection for industrial, scientific, and medical equipment. The customizable frequency range further enhances the module's flexibility, allowing it to operate under different regulations and standards, meeting the specific needs of various applications.

Multiple modulation schemes, compliant with LoRaWAN® specifications

Supports LoRa and (G)FSK modulation in the sub-GHz and 2.4G frequency bands, Sigfox® modulation in the sub-GHz band, and long-range frequency hopping spread spectrum (LR-FHSS), complying with the physical layer requirements of the LoRaWAN® specifications published by the LoRa Alliance®.

The corresponding frequency bands and modulation schemes are as follows:

Long-range, low power consumption

The LoRa1121 transmission power can be adjusted according to different applications, with a maximum transmit power of up to 22 dBm. In open areas, the sub-GHz transmission range can exceed 5000 meters. The receive current is less than 7 mA, and the sleep current is less than 1 µA.

This high adjustability and long transmission range make the LoRa1121 module excel in various wireless communication applications. Whether for industrial applications requiring high power transmission to cover greater distances or IoT devices needing low power operation to extend battery life, the LoRa1121 delivers outstanding performance and flexibility.

High sensitivity

Sub-GHz reception sensitivity up to -144 dBm @ BW=62.5 kHz, SF=12

S-band sensitivity up to -132 dBm @ BW=125 kHz, SF=12

2.4GHz reception sensitivity up to -129 dBm @ BW=406 kHz, SF=7

The high reception sensitivity of the LoRa1121 module ensures stable communication performance across various environments. Whether for long-distance low-bandwidth applications or environments requiring high-bandwidth transmission, the LoRa1121 provides reliable connectivity.

Compact stamp-sized design

The LoRa1121 module is compact and features a stamp-sized design, making it convenient for embedded integration. This design not only saves space but also simplifies the installation process, allowing the LoRa1121 module to be easily embedded into various electronic devices and systems. Whether used in IoT devices, industrial control systems, or smart home applications, the LoRa1121 module provides an efficient wireless communication solution while maintaining a sleek and aesthetically pleasing design.

LoRa1121 Module Electrical Characteristics

LoRa1121 module application

Drones

Smart home

Smart agriculture

Remote irrigation

Industrial manufacturing

The LoRa1121 module uses multi-band compatibility and various modulation schemes such as LoRa, GFSK, Sigfox, and long-range frequency hopping spread spectrum (LR-FHSS) to enhance the module's flexibility. Particularly, the integration of LR-FHSS technology provides high configurability across the 150-960 MHz, 1.9-2.1 GHz satellite bands, and 2.4 GHz ISM band to meet diverse application needs using global LoRaWAN® standards or proprietary protocols. In IoT applications, the extended network capacity with the new LR-FHSS rate supports effective payloads at both high power and low rates without changing the existing network infrastructure. This offers greater channel capacity for endpoints with the lowest data rates, effectively addressing channel congestion issues in LoRaWAN development.

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