Auto-tune Filters
Auto-tune Filters are innovative RF filters that mitigate EMI interference with the utmost efficiency.
A superior alternative to limiters and filters, Metamagnetics’ Auto-tune Filters (AtFs) provide a broadband, fast-response, simple solution that protects receivers from electromagnetic interference (EMI) and ensures that signals-of-interest are detected.
These devices have a power threshold level which no one signal can exceed. If one or more signals exceeds the threshold, the Auto-tune Filter automatically limits it by attenuating the signal. Simultaneously, desired signals operating below the power threshold pass through the system unaltered.
Durable
Auto-tune Filters are completely passive devices, requiring no electricity to perform their function. Containing no active elements, this device can survive the toughest environmental conditions in land, sea, air and space applications.
Adaptable
Auto-tune Filters automatically adapt to mitigate interferers above a preset power level without attenuating desired below threshold signals at other frequencies.
Fast
Auto-tune Filters require less than 50 nanoseconds to attenuate a high power signal to half its original power level.Reflective Auto-tune Filter Specifications
| Frequency Range (MHz) |
Instantaneous Bandwidth (MHz) |
Insertion Loss (dB) |
Return Loss (dB) |
P1dB Power Threshold (dBm) |
Selectivity (MHz) |
Peak Power (W) |
Package | |
|---|---|---|---|---|---|---|---|---|
| 1400 to 2100 | Full Band | 2.5 | 12 | -15 | 5 | 30 | 5mm QFN | |
| 960-1215 | Full Band | 3.0 | 12 | -30 | 5 | 30 | 5mm QFN | |
| 1200 to 1400 | Full Band | 1.5 | 12 | -15 | 5 | 30 | 5mm QFN | |
| 1400 to 1600 | Full Band | 1.5 | 12 | -15 | 5 | 30 | 5mm QFN | |
| 1000 to 1200 | Full Band | 3.5 | 12 | -23 | 5 | 30 | 10mm QFN | |
| 1300 to 2600 | Full Band | 5.0 | 12 | -8 | 5 | 30 | 10mm QFN | |
| Custom Designs | ||||||||
| 300 to 1000 | 200 | 6 | 12 | -30 to -10 | 5 | 30 | Coaxial | |
| 450 | 8 | 10 | -30 to -10 | 5 | 30 | Coaxial | ||
| Full Band | 10 | 10 | -30 to -10 | 5 | 30 | Coaxial | ||
| 1000 to 3000 | 300 | 2.0 | 12 | -30 to -10 | 5 | 30 | 5mm QFN | |
| 500 | 3 | 12 | -30 to -10 | 5 | 30 | Coaxial | ||
| 900 | 3 | 10 | -30 to -10 | 5 | 30 | Coaxial | ||
| 1300 | 5 | 10 | -30 to -10 | 5 | 30 | 10mm QFN | ||
Absorptive Auto-tune Filter Specifications
| Frequency Range (MHz) |
Instantaneous Bandwidth (MHz) |
Insertion Loss (dB) |
Return Loss (dB) |
P1dB Power Threshold (dBm) |
Selectivity (MHz) |
Peak Power (W) |
Package |
|---|---|---|---|---|---|---|---|
| 2 to 4 | Full Band | 3.2 | 12 | +5 | 25 | 200 | 0.5" x 0.5" x 2.5" SMA |
| 4 to 8 | Full Band | 2.6 | 15 | +12 | 25 | 200 | 0.5" x 0.5" x 2.5" SMA |
| 8 to 12 | Full Band | 3.0 | 15 | +18 | 25 | 200 | 0.5" x 0.5" x 2.5" SMA |
| 9.1 to 9.8 | Full Band | 1.5 | 15 | +10 | 25 | 200 | 0.5" x 0.5" x 1.5" SMA |
| 9.1 to 9.8 | Full Band | 1.5 | 15 | +32 | 25 | 200 | 0.5" x 0.5" x 1.5" SMA |
| 9.1 to 9.8 | Full Band | 1.5 | 12 | +10 | Limiter Only | up to 1 kW | 1.25 x 0.65 x 3.5" SMA |
| 12 to 18 | Full Band | 4.0 | 15 | +23 | 25 | 200 | 0.5" x 0.5" x 2.5" SMA |
| Custom Designs | |||||||
| 2 to 18 | 500 | 1.5 | 12 | 0 to +30 | 25 | 200 | Coaxial |
| 1 | 1.5 | 12 | 0 to +30 | 25 | 200 | Coaxial | |
| 2 | 2 | 12 | +5 to +30 | 25 | 200 | Coaxial | |
| Full Band | 4 | 12 | +5 to +30 | 25 | 200 | Coaxial | |
Video Demonstrates Real-time Impact of Interference on an Unprotected System vs. One Protected by an Auto-tune Filter (AtF)
Metamagnetics Auto-tune FilterTM is a superior alternative to limiters and filters that provides a broadband, fast-response, simple solution that protects receivers from electromagnetic interference (EMI) and ensures that signals-of-interest are detected.
