Analysis of an Open-Ended Waveguide as a Probe for Near Field Antenna Measurements by Using TLM Method

Yoshiyuki FUJINO; Cheuk-yu Edward TONG

Analysis of an Open-Ended Waveguide as a Probe for Near Field Antenna Measurements by Using TLM Method

Yoshiyuki FUJINO, Cheuk-yu Edward TONG

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To increase the accuracy of a near field antenna measurement system, it is necessary to know radiation characteristics of a probe to detect near field data. Open ended waveguide used as a near field probe in our system was analyzed using Transmission Line Matrix (TLM) method which is a time domain electromagnetic solver. Validity of this analysis has been confirmed by comparison with experimental data and existing theoretical approximation. Frequency dependence of a complex reflection coefficient at the waveguide aperture has been derived and is shown to agree with measured values. The radiation pattern of the open ended waveguide with mounting structure is also calculated. Ripples on both the amplitude and phase patterns are correctly predicted by our simulation. This method can be applied to accurately model the effect of probe antennas to enhance the accuracy of near field antenna range.

Publication: IEICE TRANSACTIONS on Communications Vol.E77-B No.8 pp.1048-1055

Publication Date: 1994/08/25

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Type of Manuscript: PAPER

Category: Antennas and Propagation

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Yoshiyuki FUJINO, Cheuk-yu Edward TONG, "Analysis of an Open-Ended Waveguide as a Probe for Near Field Antenna Measurements by Using TLM Method" in IEICE TRANSACTIONS on Communications, vol. E77-B, no. 8, pp. 1048-1055, August 1994, doi: .
Abstract: To increase the accuracy of a near field antenna measurement system, it is necessary to know radiation characteristics of a probe to detect near field data. Open ended waveguide used as a near field probe in our system was analyzed using Transmission Line Matrix (TLM) method which is a time domain electromagnetic solver. Validity of this analysis has been confirmed by comparison with experimental data and existing theoretical approximation. Frequency dependence of a complex reflection coefficient at the waveguide aperture has been derived and is shown to agree with measured values. The radiation pattern of the open ended waveguide with mounting structure is also calculated. Ripples on both the amplitude and phase patterns are correctly predicted by our simulation. This method can be applied to accurately model the effect of probe antennas to enhance the accuracy of near field antenna range.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e77-b_8_1048/_p

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@ARTICLE{e77-b_8_1048,
author={Yoshiyuki FUJINO, Cheuk-yu Edward TONG, },
journal={IEICE TRANSACTIONS on Communications},
title={Analysis of an Open-Ended Waveguide as a Probe for Near Field Antenna Measurements by Using TLM Method},
year={1994},
volume={E77-B},
number={8},
pages={1048-1055},
abstract={To increase the accuracy of a near field antenna measurement system, it is necessary to know radiation characteristics of a probe to detect near field data. Open ended waveguide used as a near field probe in our system was analyzed using Transmission Line Matrix (TLM) method which is a time domain electromagnetic solver. Validity of this analysis has been confirmed by comparison with experimental data and existing theoretical approximation. Frequency dependence of a complex reflection coefficient at the waveguide aperture has been derived and is shown to agree with measured values. The radiation pattern of the open ended waveguide with mounting structure is also calculated. Ripples on both the amplitude and phase patterns are correctly predicted by our simulation. This method can be applied to accurately model the effect of probe antennas to enhance the accuracy of near field antenna range.},
keywords={},
doi={},
ISSN={},
month={August},}

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TY - JOUR
TI - Analysis of an Open-Ended Waveguide as a Probe for Near Field Antenna Measurements by Using TLM Method
T2 - IEICE TRANSACTIONS on Communications
SP - 1048
EP - 1055
AU - Yoshiyuki FUJINO
AU - Cheuk-yu Edward TONG
PY - 1994
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E77-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 1994
AB - To increase the accuracy of a near field antenna measurement system, it is necessary to know radiation characteristics of a probe to detect near field data. Open ended waveguide used as a near field probe in our system was analyzed using Transmission Line Matrix (TLM) method which is a time domain electromagnetic solver. Validity of this analysis has been confirmed by comparison with experimental data and existing theoretical approximation. Frequency dependence of a complex reflection coefficient at the waveguide aperture has been derived and is shown to agree with measured values. The radiation pattern of the open ended waveguide with mounting structure is also calculated. Ripples on both the amplitude and phase patterns are correctly predicted by our simulation. This method can be applied to accurately model the effect of probe antennas to enhance the accuracy of near field antenna range.
ER -