140 – 220 GHz, Dial-Type Variable Waveguide Attenuator

520G/387 Uncalibrated, WR-5, Power Handling 0.1 Watts


Mi-Wave’s 520 Series Uncalibrated Variable Attenuators and 522 Calibrated Attenuators are available in standard waveguide sizes from 8 to 220 GHz. The attenuating element in each unit provides a variable attenuation, from 0 dB to 25 dB minimum. Precision-designed internal controls are accurately contoured to provide a low bilateral VSWR and minimum variation of attenuation with frequency.


• Dial Driven

• Low Cost

• Compact, Mechanically Stable Design

• Wide Range of Attenuation Values

• Smooth, Spring-loaded Setting Control


• Instrumentation

• Manual Test Setups

*All data presented is collected from a sample lot.
* Actual data may vary unit to unit, slightly.
*All testing was performed under +25 °C case temperature.
*Consult factory to confirm if material, plating, size, shape, orientation and any electrical parameter is critical for the application as website information is for reference only.
*Millimeter Wave Products, Inc. reserves the right to change the information presented on website without notice as we continue to enhance the performance and design of our products.

Calibrated & Uncalibrated Waveguide Attenuators

The 520/522 Series Variable Attenuators are useful in applications that require a reliable level setting or isolating pad. They provide maximum accuracy in establishing initial power levels in substitution-method attenuation measurements. Designed to maintain reliable performance for accurate test measurements, the stable setting control of these devices maintains constant attenuation under all normal conditions of vibration and orientation.

Other Bands Available

• WR-90

• WR-75

• WR-62

• WR-34