A Simple Mutual Coupling Compensation Technique in Array of Single-Mode Elements by a Weighted Mutual Coupling Matrix Based on the Impedance Matrix

Hiroyoshi YAMADA; Masayuki MORISHITA; Yoshio YAMAGUCHI

doi:10.1093/ietcom/e90-b.9.2288

A Simple Mutual Coupling Compensation Technique in Array of Single-Mode Elements by a Weighted Mutual Coupling Matrix Based on the Impedance Matrix

Hiroyoshi YAMADA, Masayuki MORISHITA, Yoshio YAMAGUCHI

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High-resolution Direction-of-Arrival (DOA) estimation techniques for antenna arrays have been widely desired in many applications such as smart antennas, RF position location, and RFID system. To realize high-resolution capability of the techniques, precise array calibration is necessary. For an array of single-mode elements, a calibration matrix derived by the open-circuit method is the simplest one. Unfortunately, calibration performance of the method is not enough for the high-reslution DOA estimation techniques. In this paper, we consider problems of the calibration matrix derived by the method, and show that errors in the matrix can be effectively removed by an optimal diagonal weight coefficient. In the proposed compensation technique, the number of newly introduced parameters, or unknowns, is only one for an array of the identical elements. Performance of the simple compensation technique is verified numerically and experimentally.

Publication: IEICE TRANSACTIONS on Communications Vol.E90-B No.9 pp.2288-2296

Publication Date: 2007/09/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e90-b.9.2288

Type of Manuscript: Special Section PAPER (Special Section on 2006 International Symposium on Antennas and Propagation)

Category: Smart Antennas

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Hiroyoshi YAMADA, Masayuki MORISHITA, Yoshio YAMAGUCHI, "A Simple Mutual Coupling Compensation Technique in Array of Single-Mode Elements by a Weighted Mutual Coupling Matrix Based on the Impedance Matrix" in IEICE TRANSACTIONS on Communications, vol. E90-B, no. 9, pp. 2288-2296, September 2007, doi: 10.1093/ietcom/e90-b.9.2288.
Abstract: High-resolution Direction-of-Arrival (DOA) estimation techniques for antenna arrays have been widely desired in many applications such as smart antennas, RF position location, and RFID system. To realize high-resolution capability of the techniques, precise array calibration is necessary. For an array of single-mode elements, a calibration matrix derived by the open-circuit method is the simplest one. Unfortunately, calibration performance of the method is not enough for the high-reslution DOA estimation techniques. In this paper, we consider problems of the calibration matrix derived by the method, and show that errors in the matrix can be effectively removed by an optimal diagonal weight coefficient. In the proposed compensation technique, the number of newly introduced parameters, or unknowns, is only one for an array of the identical elements. Performance of the simple compensation technique is verified numerically and experimentally.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.9.2288/_p

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@ARTICLE{e90-b_9_2288,
author={Hiroyoshi YAMADA, Masayuki MORISHITA, Yoshio YAMAGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Simple Mutual Coupling Compensation Technique in Array of Single-Mode Elements by a Weighted Mutual Coupling Matrix Based on the Impedance Matrix},
year={2007},
volume={E90-B},
number={9},
pages={2288-2296},
abstract={High-resolution Direction-of-Arrival (DOA) estimation techniques for antenna arrays have been widely desired in many applications such as smart antennas, RF position location, and RFID system. To realize high-resolution capability of the techniques, precise array calibration is necessary. For an array of single-mode elements, a calibration matrix derived by the open-circuit method is the simplest one. Unfortunately, calibration performance of the method is not enough for the high-reslution DOA estimation techniques. In this paper, we consider problems of the calibration matrix derived by the method, and show that errors in the matrix can be effectively removed by an optimal diagonal weight coefficient. In the proposed compensation technique, the number of newly introduced parameters, or unknowns, is only one for an array of the identical elements. Performance of the simple compensation technique is verified numerically and experimentally.},
keywords={},
doi={10.1093/ietcom/e90-b.9.2288},
ISSN={1745-1345},
month={September},}

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TY - JOUR
TI - A Simple Mutual Coupling Compensation Technique in Array of Single-Mode Elements by a Weighted Mutual Coupling Matrix Based on the Impedance Matrix
T2 - IEICE TRANSACTIONS on Communications
SP - 2288
EP - 2296
AU - Hiroyoshi YAMADA
AU - Masayuki MORISHITA
AU - Yoshio YAMAGUCHI
PY - 2007
DO - 10.1093/ietcom/e90-b.9.2288
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2007
AB - High-resolution Direction-of-Arrival (DOA) estimation techniques for antenna arrays have been widely desired in many applications such as smart antennas, RF position location, and RFID system. To realize high-resolution capability of the techniques, precise array calibration is necessary. For an array of single-mode elements, a calibration matrix derived by the open-circuit method is the simplest one. Unfortunately, calibration performance of the method is not enough for the high-reslution DOA estimation techniques. In this paper, we consider problems of the calibration matrix derived by the method, and show that errors in the matrix can be effectively removed by an optimal diagonal weight coefficient. In the proposed compensation technique, the number of newly introduced parameters, or unknowns, is only one for an array of the identical elements. Performance of the simple compensation technique is verified numerically and experimentally.
ER -