868MHz Cavity Filter – High-Rejection N-Type Bandpass Module for Helium Hotspots, LoRaWAN Gateways & Industrial Sensors

Product Description

In the heavily utilized 863-870MHz ISM band, strong adjacent signals and out-of-band spurious emissions can severely desensitize LoRaWAN gateways, Helium hotspots, and industrial wireless sensor front-ends. The 868MHz Cavity Filter is engineered to resolve this by delivering ≥50dB outstanding out-of-band rejection while maintaining ≤1.0dB low insertion loss. Its precise passband ensures that your RF equipment processes only the intended signals, maximizing receiver sensitivity and link reliability. Housed in a rugged black aluminum enclosure, this filter features flexible N-type connector options (N-Male, N-Female, or N-Male+N-Female), making it an ideal drop-in solution for protecting sensitive indoor miner integrations and short-to-long-range industrial wireless hardware.

Typical Applications

• Helium Network Hotspots: Block out-of-band interference to improve mining efficiency and network stability.
• Indoor LoRaWAN Gateways: Protect receiver front-ends from adjacent channel interference in dense IoT deployments.
• Industrial Wireless Sensors: Enhance signal purity for reliable short-to-long-range sensor data transmission.
• Smart Metering Infrastructure: Suppress spurious emissions in utility metering networks to ensure spectral compliance.
• RF Testing & Measurement: Provide precise bandpass filtering for laboratory validation and field diagnostics.
• ISM Band Radio Systems: Improve signal-to-noise ratio by isolating the 868MHz operating band from external noise.

Technical Specifications

Key Advantages

Exceptional Out-of-Band Rejection. With ≥50dB rejection, this cavity filter effectively blocks strong out-of-band signals and spurious emissions, protecting sensitive receiver front-ends from saturation and desensitization in dense RF environments.

Low Insertion Loss and Excellent Matching. Featuring ≤1.0dB insertion loss and VSWR ≤1.3, it ensures minimal signal attenuation within the 863-870MHz passband, preserving your transmit power and receive sensitivity.

Rugged Construction and Flexible Interfaces. The compact 104*59*37.5mm chassis with a painted black finish offers excellent mechanical durability. Multiple N-type connector configurations support seamless integration into various indoor wireless infrastructure setups.

What's in the Box

• 1 × 868MHz Cavity Filter