Description
x1.2GHz Cavity Filter for FPV and LoRa IoT Applications
The 1.2GHz Cavity Filter is designed to deliver reliable performance in FPV networks and LoRa IoT applications. Built with rugged aluminum housing, this filter ensures durability and consistent results in demanding environments.
Wide Bandwidth Coverage
The filter operates across the 1160–1280MHz bandpass. This makes it ideal for use in 1.2GHz LoRa networks and FPV systems, where clean signals are critical. With precise engineering, it reduces unwanted signals and maintains stable transmission.
Ultra-Low Insertion Loss
The filter features an ultra-low insertion loss of only 1.0dB nominal. This ensures signal strength remains high, even after passing through the filter. For FPV pilots and IoT users, this means longer range, clearer video, and stronger connections.
Strong Out-of-Band Rejection
One of the key advantages of this cavity filter is its ability to suppress side frequencies at 915MHz. By rejecting out-of-band interference, it helps maintain clean signal quality. This reduces noise, prevents overlap, and improves overall system performance.
Rugged Construction
The body of the filter is built from rugged aluminum, ensuring durability and long service life. It is designed for indoor use, but its robust build makes it resistant to wear and ensures reliable operation in various conditions.
Reliable Connectors
The filter uses N female connectors on both sides. This standard RF connector type ensures a secure, low-loss connection with your existing cables and equipment. Easy integration makes it suitable for both professional and hobbyist setups.
Surge and Lightning Protection
The cavity filter also provides DC short functionality, offering protection against surge or lightning strikes. This added safety feature helps safeguard sensitive RF equipment and ensures system longevity.
Key Benefits
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1160–1280MHz full band coverage for LoRa and FPV
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Ultra-low insertion loss (1.0dB nominal) keeps signal strength high
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Excellent 915MHz rejection for clean transmission
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Rugged aluminum design for long-lasting reliability
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N female connectors for secure, low-loss connections
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Surge/Lightning protection (DC short) for equipment safety
Electrical Specifications
| No. | Parameter | Specification | Notes |
|---|---|---|---|
| 1 | Frequency Range | 1160 ~ 1280 MHz | |
| 2 | Input/Output Impedance | 50 Ω | Standard RF impedance |
| 3 | Return Loss | > 20 dB | Good matching |
| 4 | Insertion Loss | < 1.0 dB | Low signal attenuation |
| 5 | In-Band Ripple | < 0.5 dB | Stable passband performance |
| 6 | Out-of-Band Rejection | > 50 dB @ < 720–1050 MHz | Excellent suppression |
| > 40 dB @ 1380–1420 MHz | |||
| > 40 dB @ 2400–2500 MHz | |||
| > 40 dB @ 370–560 MHz | |||
| 7 | Power Handling | > 50 W | Continuous wave |
| 8 | Harmonic Suppression | > 75 dB (2nd order) | High rejection |
| 9 | Operating Temperature | -40 ~ +80 °C | |
| 10 | Connector Type | SMA-F | Female SMA connectors |
| 11 | Dimensions | 90 × 40 × 20 mm | Non-critical requirement |
Applications
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FPV drone networks
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1.2GHz LoRa IoT systems
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ISM band communication setups
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General RF filtering where interference reduction is required
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