A Novel Analytical Method for Optimizing the Terminating Impedance of an Inverted-F Antenna for Antenna Selection Diversity on a Hand-Held Phone
Summary :
Recently, antenna selection diversity has been widely used for hand-held phones to overcome a fading problem. A monopole antenna (MPA) and an inverted-F antenna (IFA) are the typical antennas used for this purpose. However, strong mutual coupling generally appears between these two antennas and often makes the diversity antenna design difficult. In particular, in the case that the MPA is unselected antenna the mutual coupling can be minimized using the open terminating impedance. On the other hand, in the case that the IFA is unselected antenna the terminating impedance, which can minimize the mutual coupling, has not been clarified. This paper presents a novel analytical method for optimizing the terminating impedance of the IFA. The method exploits the Z-matrix, and the final expression of the terminating impedance is expressed by self- and mutual-impedance. The numerical and experimental results confirm that the proposed optimization method is effective for minimizing the mutual coupling.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E84-B No.1 pp.89-94
- Publication Date
- 2001/01/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- PAPER
- Category
- Antenna and Propagation
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Noriaki ODACHI, Syuichi SEKINE, Hiroki SHOKI, Yasuo SUZUKI, "A Novel Analytical Method for Optimizing the Terminating Impedance of an Inverted-F Antenna for Antenna Selection Diversity on a Hand-Held Phone" in IEICE TRANSACTIONS on Communications,
vol. E84-B, no. 1, pp. 89-94, January 2001, doi: .
Abstract: Recently, antenna selection diversity has been widely used for hand-held phones to overcome a fading problem. A monopole antenna (MPA) and an inverted-F antenna (IFA) are the typical antennas used for this purpose. However, strong mutual coupling generally appears between these two antennas and often makes the diversity antenna design difficult. In particular, in the case that the MPA is unselected antenna the mutual coupling can be minimized using the open terminating impedance. On the other hand, in the case that the IFA is unselected antenna the terminating impedance, which can minimize the mutual coupling, has not been clarified. This paper presents a novel analytical method for optimizing the terminating impedance of the IFA. The method exploits the Z-matrix, and the final expression of the terminating impedance is expressed by self- and mutual-impedance. The numerical and experimental results confirm that the proposed optimization method is effective for minimizing the mutual coupling.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e84-b_1_89/_p
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@ARTICLE{e84-b_1_89,
author={Noriaki ODACHI, Syuichi SEKINE, Hiroki SHOKI, Yasuo SUZUKI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Analytical Method for Optimizing the Terminating Impedance of an Inverted-F Antenna for Antenna Selection Diversity on a Hand-Held Phone},
year={2001},
volume={E84-B},
number={1},
pages={89-94},
abstract={Recently, antenna selection diversity has been widely used for hand-held phones to overcome a fading problem. A monopole antenna (MPA) and an inverted-F antenna (IFA) are the typical antennas used for this purpose. However, strong mutual coupling generally appears between these two antennas and often makes the diversity antenna design difficult. In particular, in the case that the MPA is unselected antenna the mutual coupling can be minimized using the open terminating impedance. On the other hand, in the case that the IFA is unselected antenna the terminating impedance, which can minimize the mutual coupling, has not been clarified. This paper presents a novel analytical method for optimizing the terminating impedance of the IFA. The method exploits the Z-matrix, and the final expression of the terminating impedance is expressed by self- and mutual-impedance. The numerical and experimental results confirm that the proposed optimization method is effective for minimizing the mutual coupling.},
keywords={},
doi={},
ISSN={},
month={January},}
Copy
TY - JOUR
TI - A Novel Analytical Method for Optimizing the Terminating Impedance of an Inverted-F Antenna for Antenna Selection Diversity on a Hand-Held Phone
T2 - IEICE TRANSACTIONS on Communications
SP - 89
EP - 94
AU - Noriaki ODACHI
AU - Syuichi SEKINE
AU - Hiroki SHOKI
AU - Yasuo SUZUKI
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E84-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2001
AB - Recently, antenna selection diversity has been widely used for hand-held phones to overcome a fading problem. A monopole antenna (MPA) and an inverted-F antenna (IFA) are the typical antennas used for this purpose. However, strong mutual coupling generally appears between these two antennas and often makes the diversity antenna design difficult. In particular, in the case that the MPA is unselected antenna the mutual coupling can be minimized using the open terminating impedance. On the other hand, in the case that the IFA is unselected antenna the terminating impedance, which can minimize the mutual coupling, has not been clarified. This paper presents a novel analytical method for optimizing the terminating impedance of the IFA. The method exploits the Z-matrix, and the final expression of the terminating impedance is expressed by self- and mutual-impedance. The numerical and experimental results confirm that the proposed optimization method is effective for minimizing the mutual coupling.
ER -
English
