33 – 50 GHz, Programmable Rotary Vane Attenuator

511B/383ND, Q-Band, WR-22, Attenuation Range to 70 dB


Mi-Wave’s 511 Series Precision Programmable Rotary Vane Attenuators are available in full waveguide bands from 7.0 to 220GHz. Attenuation control is performed manually via a front panel or remote controlled using a standard IEEE-488 or USB interface.


• Attenuation from 0 to 70 dB

• USB & IEEE-488 Interface

• Full Band Operation

• Higher speed

• Less than 2sec. to change attenuation level from 0 to 70 dB

• Mode free

• Significantly quiet operation

• Programmable GPIB address (now goes up to 30)

• “xx.xx dB Command Complete,” message sent via USB or GPIB after attenuation level is reached

• LED buttons for changing Attenuation levels

• Improved resolution with 0.01 steps from 0 to 70 dB

• Backlit display

• Integrated shutdown safety feature in the event of failure

• MTBF more that 1 million cycles


• Fade Margin Testing of Microwave Radio

• Remote Control of RF Power Levels

• Instrumentation

• Automatic 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.

Programmable Rotary Vane Attenuators

The attenuators small compact size incorporates both the electronic controller and the microwave components. The unit operates from a single +24 Volt DC source or with an optional adapter. Attenuation range is from 0 to 70 dB in .01 dB steps from 0 to 70 dB.

A digital readout is provided on the front panel to display attenuation settings. USB & GPIB interface available. Tested to over 1 million cycles. New company proprietary internal absorbing material that will handle high power levels and yield low insertion loss and mode free operation to 70 dB attenuation levels