Antenna - Spring

865–868 MHz Spring Antenna for Compact RF Designs

The Antenna - Spring is a compact helical antenna for wireless circuits operating in the 865–868 MHz frequency range. It uses a coiled conducting wire and a direct-solder connection, making it an option for compatible PCB designs where space for an antenna is limited. The supplier specifies 50 Ω impedance and approximately 1.5 dBi gain, with gain dependent on the PCB ground plane.

Key Features

• Compact helical design: A small coiled form for integration into compatible wireless hardware.
• Direct-solder mounting: Connects to the board’s antenna feed without a separate plug-in RF connector.
• 865–868 MHz operation: Select it for RF designs that match the specified operating band.
• 50 Ω impedance: Intended for a compatible RF interface and matching network.

Technical Specifications

Applications and Integration

Consider this antenna for compatible 865–868 MHz wireless sensor nodes, telemetry devices, RF prototypes and embedded communication projects. Match the operating frequency, RF interface and mounting requirements to your circuit before selection.

Follow the radio module’s antenna-layout guidance and test performance in the finished enclosure. PCB ground plane, nearby components, mounting and enclosure materials can affect antenna tuning and range. The listed 10 W rating describes antenna power handling, not a required operating power or a permitted transmitter setting.

Frequently Asked Questions

What frequency does this spring antenna support?

The supplier specifies 865–868 MHz. It is not listed as a 433 MHz, 915 MHz or 2.4 GHz antenna.

Can I use it with a LoRa module?

It may suit a LoRa-based design operating within 865–868 MHz, provided the module’s RF interface, antenna matching and board layout are compatible. Compatibility should be checked for the specific module.

Does it have an SMA or U.FL connector?

No. The specified connection is direct solder to a suitable antenna feed on the PCB.

What communication range will it provide?

No fixed range is specified. Range depends on the radio, installation, PCB ground plane, environment and antenna tuning. The supplier’s approximate 1.5 dBi gain also depends on the ground plane.