Measuring the isolation of the circularly polarized characteristic waves in NVIS propagation

Ben A. Witvliet, Erik van Maanen, George J. Petersen, Albert J. Westenberg, Mark J. Bentum, Cornelis H. Slump, Roel Schiphorst

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

Separate excitation of the characteristic waves in the ionosphere results in two orthogonal propagation channels on the same frequency, which may be used in diversity and multiple-input, multiple-output (MIMO) systems. In this article, a method to measure the isolation between these paths is proposed and demonstrated in a near vertical incidence skywave (NVIS) experiment at a frequency of 7 MHz over a 105-km distance. Characteristic wave isolation exceeding 25 dB is measured during "Happy Hour": the interval when the propagation path just opens or closes and only the extraordinary wave propagates.
Original languageEnglish
Pages (from-to)120-145
Number of pages26
JournalIEEE antennas and propagation magazine
Volume57
Issue number3
DOIs
Publication statusPublished - Jun 2015

Fingerprint

Wave propagation
isolation
incidence
propagation
MIMO (control systems)
Ionosphere
ionospheres
intervals
excitation
Experiments

Keywords

  • EWI-26669
  • IR-98994
  • METIS-315147

Cite this

Witvliet, Ben A. ; van Maanen, Erik ; Petersen, George J. ; Westenberg, Albert J. ; Bentum, Mark J. ; Slump, Cornelis H. ; Schiphorst, Roel. / Measuring the isolation of the circularly polarized characteristic waves in NVIS propagation. In: IEEE antennas and propagation magazine. 2015 ; Vol. 57, No. 3. pp. 120-145.
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abstract = "Separate excitation of the characteristic waves in the ionosphere results in two orthogonal propagation channels on the same frequency, which may be used in diversity and multiple-input, multiple-output (MIMO) systems. In this article, a method to measure the isolation between these paths is proposed and demonstrated in a near vertical incidence skywave (NVIS) experiment at a frequency of 7 MHz over a 105-km distance. Characteristic wave isolation exceeding 25 dB is measured during {"}Happy Hour{"}: the interval when the propagation path just opens or closes and only the extraordinary wave propagates.",
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Measuring the isolation of the circularly polarized characteristic waves in NVIS propagation. / Witvliet, Ben A.; van Maanen, Erik; Petersen, George J.; Westenberg, Albert J.; Bentum, Mark J.; Slump, Cornelis H.; Schiphorst, Roel.

In: IEEE antennas and propagation magazine, Vol. 57, No. 3, 06.2015, p. 120-145.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Measuring the isolation of the circularly polarized characteristic waves in NVIS propagation

AU - Witvliet, Ben A.

AU - van Maanen, Erik

AU - Petersen, George J.

AU - Westenberg, Albert J.

AU - Bentum, Mark J.

AU - Slump, Cornelis H.

AU - Schiphorst, Roel

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AB - Separate excitation of the characteristic waves in the ionosphere results in two orthogonal propagation channels on the same frequency, which may be used in diversity and multiple-input, multiple-output (MIMO) systems. In this article, a method to measure the isolation between these paths is proposed and demonstrated in a near vertical incidence skywave (NVIS) experiment at a frequency of 7 MHz over a 105-km distance. Characteristic wave isolation exceeding 25 dB is measured during "Happy Hour": the interval when the propagation path just opens or closes and only the extraordinary wave propagates.

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KW - IR-98994

KW - METIS-315147

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