Characterization of submillimeter wave absorbers from 200-600 GHz

Jussi Säily, Antti V. Räisänen

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

This paper presents measurements of both specular and non-specular scattering from several submillimeter wave absorber materials designed for antenna testing and from low-cost carpet materials. The frequency range is 200–600 GHz in specular scattering, and 300–400 GHz in non-specular scattering measurements. The constructed bistatic test bench allows testing of the full continuous angular range of 0°–90°. The measurement results show large differences in performance of different materials. It is shown that reflectivities below −50 dB over limited angular ranges are possible with a correct alignment of the material. Also, low-cost carpet materials have lower than −15 dB reflectivities in most angles, and may be useful in non-critical parts of the antenna test range. The results can be used to optimise the absorber placement inside an antenna range, concerning both best performance and lowest cost.
Original languageEnglish
Pages (from-to)71 - 78
Number of pages8
JournalInternational Journal of Infrared and Millimeter Waves
Volume24
Issue number1
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

Fingerprint

Submillimeter waves
submillimeter waves
absorbers
antennas
scattering
test ranges
absorbers (materials)
reflectance
Scattering
Antennas
seats
Costs
frequency ranges
alignment
costs
Testing

Keywords

  • absorbes
  • submillimeter waves
  • specular scattering
  • non-specular scattering

Cite this

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title = "Characterization of submillimeter wave absorbers from 200-600 GHz",
abstract = "This paper presents measurements of both specular and non-specular scattering from several submillimeter wave absorber materials designed for antenna testing and from low-cost carpet materials. The frequency range is 200–600 GHz in specular scattering, and 300–400 GHz in non-specular scattering measurements. The constructed bistatic test bench allows testing of the full continuous angular range of 0°–90°. The measurement results show large differences in performance of different materials. It is shown that reflectivities below −50 dB over limited angular ranges are possible with a correct alignment of the material. Also, low-cost carpet materials have lower than −15 dB reflectivities in most angles, and may be useful in non-critical parts of the antenna test range. The results can be used to optimise the absorber placement inside an antenna range, concerning both best performance and lowest cost.",
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author = "Jussi S{\"a}ily and R{\"a}is{\"a}nen, {Antti V.}",
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Characterization of submillimeter wave absorbers from 200-600 GHz. / Säily, Jussi; Räisänen, Antti V.

In: International Journal of Infrared and Millimeter Waves, Vol. 24, No. 1, 2004, p. 71 - 78.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Characterization of submillimeter wave absorbers from 200-600 GHz

AU - Säily, Jussi

AU - Räisänen, Antti V.

PY - 2004

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AB - This paper presents measurements of both specular and non-specular scattering from several submillimeter wave absorber materials designed for antenna testing and from low-cost carpet materials. The frequency range is 200–600 GHz in specular scattering, and 300–400 GHz in non-specular scattering measurements. The constructed bistatic test bench allows testing of the full continuous angular range of 0°–90°. The measurement results show large differences in performance of different materials. It is shown that reflectivities below −50 dB over limited angular ranges are possible with a correct alignment of the material. Also, low-cost carpet materials have lower than −15 dB reflectivities in most angles, and may be useful in non-critical parts of the antenna test range. The results can be used to optimise the absorber placement inside an antenna range, concerning both best performance and lowest cost.

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KW - non-specular scattering

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DO - 10.1023/B:IJIM.0000012764.61738.d7

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JO - Journal of Infrared, Millimeter, and Terahertz Waves

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