Spring LoRa Antenna 433Mhz with IPEX Cable

This 433MHz Spring Coil LoRa Antenna with IPEX U.FL cable is a compact, high-performance embedded antenna designed for LoRa, LoRaWAN, ISM band, and sub-GHz wireless modules that require reliable omnidirectional signal coverage in a small, lightweight form factor. The helical spring coil element delivers 3dBi gain with a low VSWR of ≤1.5, providing consistently strong signal transmission and reception across the 433MHz ISM band without the bulk of an external whip or rod antenna.

The antenna connects via a standard U.FL (IPEX / IPX13) connector and a flexible RG1.13 or RG174 coaxial cable, making it directly compatible with a wide range of popular LoRa modules including Semtech SX1278, HopeRF Ra-02, REYAX RYLR998, SX1276, and ESP32 LoRa development boards. The cable provides enough reach to position the antenna at the edge or exterior of an enclosure for improved signal clearance, while the spring body is robust enough to handle vibration and mechanical stress without performance degradation.

Rated for a maximum input power of 10W with a 50Ω input impedance, it is equally suitable for short-range sensor networks, smart metering, agricultural IoT nodes, remote keyless entry systems, and long-range LoRaWAN gateway and node builds. The compact spring element measures approximately 25–30mm in total length, making it ideal for embedding within enclosures where space is at a premium.