Log-periodic EMC antenna - auto-tuning 30-200 MHz: 3170 Intell-I-Tune | ETS-Lindgren

The ETS-Lindgren 3170 Intell-I-Tune Log Periodic Antenna is an antenna system for demanding Radiated Susceptibility testing in the 30-200 MHz frequency range. It is designed for EMC test environments where defined field strengths, reproducible measurement results and efficient test sequences are required in the lower VHF range.

According to the manufacturer, the 3170 achieves true resonance across the 30-200 MHz range and delivers 200 V/m at 1 m distance from the antenna. It addresses test configurations according to MIL-STD-461G/H RS103, DO-160 and ISO 11452-2.

With patented Intell-I-Tune auto-tuning, the antenna elements are mechanically adjusted for the test frequency and polarization. This supports stable field generation, reduces harmonic content and lowers amplifier power requirements in typical RS103 test setups.

Advantages

• One antenna system for 30-200 MHz without antenna changes between multiple frequency bands
• 200 V/m at 1 m distance for demanding Radiated Susceptibility tests
• True resonance across the full 30-200 MHz frequency range
• Patented auto-tuning with motorized antenna element adjustment
• Reduced harmonic emissions through spectrally cleaner field generation
• Low SWR, typically 1.5:1, for more stable system conditions
• Lower amplifier power requirements compared with less efficient antenna configurations
• Automated operation for improved repeatability and more efficient test workflows

Key features

• Model: ETS-Lindgren 3170 Intell-I-Tune Log Periodic Antenna
• Function: log-periodic antenna solution for EMC immunity testing
• Frequency range: 30-200 MHz
• Field strength: up to 200 V/m at 1 m distance from the antenna
• Supported test requirements: MIL-STD-461G/H RS103, DO-160 and ISO 11452-2
• Tuning: patented motorized auto-tuning function
• Antenna optimization: mechanical adjustment of antenna elements for test frequency and polarization
• SWR: typically 1.5:1
• Harmonic suppression: 25 dB or more
• Software integration: fully automated control via TILE! Software according to the provided information
• Industries: Aerospace & Defense, Automotive and Commercial EMC

Typical applications

• RS103 Radiated Susceptibility tests according to MIL-STD-461G/H
• EMC immunity testing in the 30-200 MHz frequency range
• DO-160 test configurations for aerospace-related EMC testing
• ISO 11452-2 testing for automotive EMC applications
• EMC laboratories requiring stable field strengths and repeatable measurement results
• Qualification and development testing for small to very large EUTs

Additional information

The ETS-Lindgren 3170 is particularly relevant for laboratories that need to generate defined field strengths with high repeatability in the 30-200 MHz range. Compared with conventional antenna configurations, the single antenna system reduces reconfiguration effort and supports consistent test conditions across the full frequency range.

When designing an RS103 test environment, the antenna system, amplifier power, VSWR, polarization, field strength requirement, test distance and software control should be assessed together. EMCO Elektronik supports customers in the DACH region with the technical evaluation and selection of suitable ETS-Lindgren EMC and RF solutions.