The chamber is an electromagnetically-quiet room that allows for the characterization of antennas, radars, and other radio frequency (RF) emitters, as well as the testing of electromagnetic compatibility (EMC) in electronics. Measuring 15-feet by 35-feet by 15-feet, the chamber is also large enough to facilitate newly developed radar platforms such as the Center's uninhabited aircraft system (UAS). "Performing measurements locally is far more cost- and time-effective than discovering and solving radar system and platform interference issues in the field", reports Stephen Yan, chamber manager and assistant research professor at CReSIS.

The anechoic chamber is now fully operational and housed in KU's Measurement Materials and Sustainable Environment Center (M2SEC). M2SEC opened its doors in August 2012, custom-designed to accommodate the chamber and to ensure effective integration of research and testing with education and training.

NSF Grant Enables Construction of New Anechoic Chamber
Anechoic Chamber Slides (PPT)

 

Electromagnetic Anechoic Chamber

  • Emulates a “free space” environment for testing
  • Provides an electromagnetically quiet environment for measuring the radiating properties of a device-under-test
    1. Enclosed by an external metallic shielding to provide isolation from the outside environment
    2. Interior lined with radio frequency/microwave absorbers and ferrite tiles to minimize unwanted multiple internal signal reflections inside the chamber
  • Application examples
    1. Characterization of intentional radiators or the scattering of electromagnetic energy, such as antenna radiation pattern and radar cross section (RCS) measurements
    2. Determining the level of radiation/noise from unintentional radiators. For instance, electromagnetic interference (EMI) measurement for digital devices/systems
    3. Determining the level of immunity of an electronic device/system when exposed to ambient electromagnetic signal/no

 

Click the image for a better viewChamber Platform

Features

  • Electromagnetic measurement and characterization from 30 MHz to 18 GHz
  • 10 m measurement range
  • Biggest chamber within ~500 miles in the area
  • Capable of accommodating small UAV of up to 1,100 lbs
  • ~100 dB shielding from external environment

Potential Applications

  • Antenna performance characterization
  • EMI/EMC measurement
  • Radar cross section study
  • Others…
Click the image for a better viewChamber Platform & Antenna

 

Click the image for a better view
Chamber Interior

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