SKU: IOWC-0824
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LoRa Antenna 433MHz SMA Male 3.6dBi

₹61.00 (Inclusive of all taxes)
Out of Stock

A 433MHz quarter-wave LoRa antenna with an SMA male connector, offering 3.6dBi peak gain and 50-ohm impedance for extending the range of LoRa, ISM-band, and wireless telemetry modules.

Features

  • 433MHz ISM Band Optimized – Tuned for LoRa, wireless sensor networks, and other 433MHz ISM applications.
  • 3.6dBi Peak Gain – Provides a focused radiation pattern for improved signal strength and extended communication range.
  • SMA Male Connector – Standard connector for direct compatibility with many LoRa modules, gateways, and RF boards.
  • 50-Ohm Impedance & Low VSWR – Ensures efficient power transfer and minimal signal reflection for stable RF performance.
  • Compact & Durable – Robust construction with an operating temperature range of -20°C to +85°C for indoor/outdoor use.

Out of stock

Description

This 433MHz LoRa antenna is a quarter-wave monopole designed for the industrial, scientific, and medical (ISM) radio bands. It provides a cost-effective solution for enhancing the signal range and reliability of LoRa transceivers, wireless telemetry nodes, and other 433MHz RF systems. The antenna features a standard SMA male connector for direct attachment to compatible RF modules and gateways.

Engineered with a 50-ohm characteristic impedance and a low voltage standing wave ratio (VSWR), it ensures maximum power transfer from the transmitter with minimal reflected power loss. The compact form factor and wide operating temperature range make it suitable for integration into both prototype and deployed IoT systems in various environments.

Key Features

  • Precision-tuned for the 433MHz ISM frequency band, ideal for LoRa and LPWAN networks.
  • Features a quarter-wave monopole design for a balanced radiation pattern.
  • Low VSWR (less than 2.0 typical) ensures efficient RF power delivery and system stability.
  • Standard SMA male connector provides reliable mechanical and electrical coupling.
  • 50-ohm impedance matches most commercial RF transceiver outputs.
  • Compact physical profile allows for flexible mounting in space-constrained applications.
  • Wide operating temperature range supports deployment in varied climatic conditions.

Applications

  • Range extension for LoRa and LoRaWAN sensor nodes and gateways.
  • General-purpose antenna for 433MHz ISM-band wireless telemetry and control systems.
  • Replacement or upgrade antenna for RF modules (e.g., HopeRF, EByte, SX127x-based boards).
  • Antenna for wireless data links in smart agriculture, environmental monitoring, and industrial IoT.

Technical Specifications

Antenna Type¼-wave Monopole
Center Frequency433 MHz
Peak Gain3.6 dBi
VSWR< 2.0 (typical at center frequency)
Impedance50 Ohms
Connector TypeSMA Male
Operating Temperature-20°C to +85°C

Frequently Asked Questions

What devices is this 433MHz antenna compatible with?

This antenna is compatible with any RF module or gateway operating in the 433MHz ISM band that features a female SMA connector. This includes popular LoRa transceivers like the SX1276/SX1278, RA-01/RA-02 modules, and many wireless telemetry boards. Ensure your device's output impedance is 50 ohms for optimal matching. It is not suitable for 868MHz or 2.4GHz systems without significant performance degradation.

How do I properly install and orient the antenna for best performance?

Screw the SMA male connector firmly onto your device's female SMA port to ensure a solid electrical connection. For a quarter-wave monopole like this, optimal radiation is omnidirectional in the horizontal plane. Mount the antenna vertically, clear of large metal objects or enclosures, to maximize its range. The cable should not be tightly bent or pinched, as this can affect impedance. Performance is best in open, line-of-sight conditions.

Can this antenna be used outdoors?

Yes, the antenna's specified operating temperature range of -20°C to +85°C allows for outdoor use in most climates. However, the connector junction is not inherently waterproof. For permanent outdoor installation, you should apply a weatherproofing sealant (like coax seal or silicone) over the SMA connection to prevent moisture ingress and corrosion, which would degrade signal quality and potentially damage the RF port.

Package Includes

  • 1x LoRa Antenna 433MHz with SMA Male Connector

Additional Information

Weight 0.008 kg
Dimensions 12 × 11 × 1 cm