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Shielded Anechoic Chamber

Telecommunications / Experimental Facilities and Research Infrastructure / Shielded Anechoic Chamber

Shielded Anechoic Chamber for Antenna Characterization

For antenna measurements, a shielded anechoic chamber is available at our institute.

  • Antennas-under-test can be characterized accurately from 800 MHz up to 40 GHz.
  • Absolute gain measurements can be carried out with +/- 0.5 dB accuracy.

The chamber occupies a volume of 5m x 5m x 5m and its outside-to-inside isolation is better than 85 dB for electromagnetic waves with frequencies up to 100 GHz.

The useable volume for RF measurements on antennas under test is much smaller: approx. 1m x 1m x 1m. For this reason, we need to measure antenna properties in the near field, rather than in the far field. The chamber’s near field scanner is based on a spherical geometry with 2-axis positioner.

Photo of the measurement of parabolic dish antenna in a shielded anechoic chamber Open Image Gallery
Measurement of parabolic dish antenna in a shielded anechoic chamber
Photo of the switched beam antenna measurement in the anechoic chamber Open Image Gallery
Switched beam antenna measurement in the anechoic chamber

References

  • David Löschenbrand, Gregor Lasser, Christoph F. Mecklenbräuker: Reflection Suppression in Anechoic Chambers for Spherical Near-Field Antenna Measurements using Modal Filtering COST Action IC 1004, TD(15)12058, 5 pages, presented at 12th Management Committee and Scientific Meeting, Dublin, Ireland, 28-30 Jan. 2015
  • Gregor Lasser, David Löschenbrand, Christoph F. Mecklenbräuker: Update on Distorted Measured Antenna Patterns COST Action IC 1004, TD(14)10033, 10th Management Committee Meeting and Scientific Meeting, 8 pages, Aalborg, Denmark; 26-28 May 2014

Contact: Prof. Christoph F. Mecklenbräuker

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