IEICE TRANSACTIONS on Communications
A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Bridge Line
Summary :
In this study, a novel decoupling method using parasitic elements (PEs) connected by a bridge line (BL) for two planar inverted-F antennas (PIFAs) is proposed. The proposed method is developed from a well-known decoupling method that uses a BL to directly connect antenna elements. When antenna elements are connected directly by a BL, strong mutual coupling can be reduced, but the resonant frequency shifts to a different frequency. Hence, to shift the resonant frequency toward the desired frequency, the original size of the antenna elements must be adjusted. This is disadvantageous if the method is applied in cases where the design conditions render it difficult to connect the antennas directly or adjust the original antenna size. Therefore, to easily reduce mutual coupling in such a case, a decoupling method that does not require both connecting antennas directly and adjusting the original antenna size is necessitated. This study demonstrates that using PEs connected by a BL reduces the mutual coupling from -6.6 to -14.1dB, and that the resonant frequency is maintained at the desired frequency (2.0GHz) without having to adjust the original PIFAs size. In addition, impedance matching can be adjusted to the desired frequency, resulting in an improved total antenna efficiency from 77.4% to 94.6%. This method is expected to be a simple and effective approach for reducing the mutual coupling between larger numbers of PIFA elements in the future.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E104-B No.6 pp.630-638
- Publication Date
- 2021/06/01
- Publicized
- 2020/12/22
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2020EBP3048
- Type of Manuscript
- PAPER
- Category
- Antennas and Propagation
Authors
Quang Quan PHUNG
National Defense Academy
Tuan Hung NGUYEN
the Le Quy Don Technical University
Naobumi MICHISHITA
National Defense Academy
Hiroshi SATO
the Panasonic Corporation
Yoshio KOYANAGI
the Panasonic Corporation
Hisashi MORISHITA
National Defense Academy
Keyword
Latest Issue
Copyrights notice of machine-translated contents
The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.
Cite this
Copy
Quang Quan PHUNG, Tuan Hung NGUYEN, Naobumi MICHISHITA, Hiroshi SATO, Yoshio KOYANAGI, Hisashi MORISHITA, "A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Bridge Line" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 6, pp. 630-638, June 2021, doi: 10.1587/transcom.2020EBP3048.
Abstract: In this study, a novel decoupling method using parasitic elements (PEs) connected by a bridge line (BL) for two planar inverted-F antennas (PIFAs) is proposed. The proposed method is developed from a well-known decoupling method that uses a BL to directly connect antenna elements. When antenna elements are connected directly by a BL, strong mutual coupling can be reduced, but the resonant frequency shifts to a different frequency. Hence, to shift the resonant frequency toward the desired frequency, the original size of the antenna elements must be adjusted. This is disadvantageous if the method is applied in cases where the design conditions render it difficult to connect the antennas directly or adjust the original antenna size. Therefore, to easily reduce mutual coupling in such a case, a decoupling method that does not require both connecting antennas directly and adjusting the original antenna size is necessitated. This study demonstrates that using PEs connected by a BL reduces the mutual coupling from -6.6 to -14.1dB, and that the resonant frequency is maintained at the desired frequency (2.0GHz) without having to adjust the original PIFAs size. In addition, impedance matching can be adjusted to the desired frequency, resulting in an improved total antenna efficiency from 77.4% to 94.6%. This method is expected to be a simple and effective approach for reducing the mutual coupling between larger numbers of PIFA elements in the future.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020EBP3048/_p
Copy
@ARTICLE{e104-b_6_630,
author={Quang Quan PHUNG, Tuan Hung NGUYEN, Naobumi MICHISHITA, Hiroshi SATO, Yoshio KOYANAGI, Hisashi MORISHITA, },
journal={IEICE TRANSACTIONS on Communications},
title={A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Bridge Line},
year={2021},
volume={E104-B},
number={6},
pages={630-638},
abstract={In this study, a novel decoupling method using parasitic elements (PEs) connected by a bridge line (BL) for two planar inverted-F antennas (PIFAs) is proposed. The proposed method is developed from a well-known decoupling method that uses a BL to directly connect antenna elements. When antenna elements are connected directly by a BL, strong mutual coupling can be reduced, but the resonant frequency shifts to a different frequency. Hence, to shift the resonant frequency toward the desired frequency, the original size of the antenna elements must be adjusted. This is disadvantageous if the method is applied in cases where the design conditions render it difficult to connect the antennas directly or adjust the original antenna size. Therefore, to easily reduce mutual coupling in such a case, a decoupling method that does not require both connecting antennas directly and adjusting the original antenna size is necessitated. This study demonstrates that using PEs connected by a BL reduces the mutual coupling from -6.6 to -14.1dB, and that the resonant frequency is maintained at the desired frequency (2.0GHz) without having to adjust the original PIFAs size. In addition, impedance matching can be adjusted to the desired frequency, resulting in an improved total antenna efficiency from 77.4% to 94.6%. This method is expected to be a simple and effective approach for reducing the mutual coupling between larger numbers of PIFA elements in the future.},
keywords={},
doi={10.1587/transcom.2020EBP3048},
ISSN={1745-1345},
month={June},}
Copy
TY - JOUR
TI - A Study on Decoupling Method for Two PIFAs Using Parasitic Elements and Bridge Line
T2 - IEICE TRANSACTIONS on Communications
SP - 630
EP - 638
AU - Quang Quan PHUNG
AU - Tuan Hung NGUYEN
AU - Naobumi MICHISHITA
AU - Hiroshi SATO
AU - Yoshio KOYANAGI
AU - Hisashi MORISHITA
PY - 2021
DO - 10.1587/transcom.2020EBP3048
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2021
AB - In this study, a novel decoupling method using parasitic elements (PEs) connected by a bridge line (BL) for two planar inverted-F antennas (PIFAs) is proposed. The proposed method is developed from a well-known decoupling method that uses a BL to directly connect antenna elements. When antenna elements are connected directly by a BL, strong mutual coupling can be reduced, but the resonant frequency shifts to a different frequency. Hence, to shift the resonant frequency toward the desired frequency, the original size of the antenna elements must be adjusted. This is disadvantageous if the method is applied in cases where the design conditions render it difficult to connect the antennas directly or adjust the original antenna size. Therefore, to easily reduce mutual coupling in such a case, a decoupling method that does not require both connecting antennas directly and adjusting the original antenna size is necessitated. This study demonstrates that using PEs connected by a BL reduces the mutual coupling from -6.6 to -14.1dB, and that the resonant frequency is maintained at the desired frequency (2.0GHz) without having to adjust the original PIFAs size. In addition, impedance matching can be adjusted to the desired frequency, resulting in an improved total antenna efficiency from 77.4% to 94.6%. This method is expected to be a simple and effective approach for reducing the mutual coupling between larger numbers of PIFA elements in the future.
ER -
English
