AO Microwave RF & Microwave Components for EMC Testing: Attenuators, Loads, Couplers and High-Power Antennas

EMC test data is only as good as the passive components in the measurement chain - insertion loss variation, connector mismatch and power drift corrupt radiated and conducted emissions results before the DUT is ever at fault.

This guide is built around the three failure modes that matter in an EMC lab: measurement accuracy, signal consistency across frequency sweeps, and test-to-test repeatability.

Inside:

- Coaxial attenuators - fixed and step types, DC to 18 GHz, 1-50 dB with a tight ±0.3 dB attenuation tolerance for precise level control
- 50 Ω broadband RF loads - 1 W to 50 W with return loss above 40 dB for reflectionless signal absorption
- Directional couplers - 10-30 dB coupling with directivity above 30 dB for real-time power monitoring in test loops
- High-power broadband antenna - 0.1-40 GHz, 100 W+ power handling with consistent gain and radiation patterns across the EMC test spectrum

Max VSWR is held below 1.15 across the signal chain, covering the full EMC test range from conducted to radiated emissions. Useful for pre-compliance benches and chamber work where fewer re-tests and lab-to-lab correlation matter. More details: www.aomicrowave.com.