A Folded Loop Antenna System for Handsets Developed and Based on the Advanced Design Concept(Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
スポンサーリンク
概要
- 論文の詳細を見る
Analysis of a novel folded loop antenna for handset is described along with the advanced design concept for handset antennas. The design concept shown in this paper meets the foremost requirement for handset antennas such as (1) small size and yet (2) has capability of mitigating degradation of antenna performance due to the body effect, and (3) of reducing SAR value in the human head at the handset talk position, in addition to the indispensable requirements for handset antennas such as (4) low profile, and (5) light weight. The technology applied is to make this antenna (a) an integrated structure, which is a typical application of the fundamental concept of making antennas small and (b) a balanced structure which has been proved to be very effective to satisfy the requirements (2) and (3). The antenna is essentially a two-wire transmission line, folded at about a quarter-wavelength to form a half-wave folded dipole, and yet appears to be a loop of one-wavelength. It does not have really a balanced structure, as is fed with an unbalanced line; however, the antenna structure itself can eliminate the unbalanced current flow on the feed line as in the balanced antenna system. Both theoretical and experimental analyses have been shown and the usefulness of the antenna is discussed. This paper may suggest the advanced technology and design concept that will be applied to the development of handset antennas toward the future.
- 社団法人電子情報通信学会の論文
- 2001-09-01
著者
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Kim Yunjin
Jet Propulsion Laboratory California Institute Of Technology
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FUJIMOTO Kyohei
FAIS, University of Tsububa
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Fujimoto K
Department Of Manufacturing Science Graduate School Of Engineering Osaka University
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Fujimoto K
Fais University Of Tsububa
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KIM Yongho
the Department of Communications Engineering, National Defense Academy
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MORISHITA Hisashi
the Department of Communications Engineering, National Defense Academy
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KOYANAGI Yoshio
Personal Communication Division, Matsushita Communication Industrial
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Koyanagi Yoshio
Department Of Virology Tohoku University School Of Medicine
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MORISHITA Hisashi
Dept. of Electrical and Electronic Engineering, National Defense Academy
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Morishita H
Department Of Electrical And Electronic Engineering National Defense Academy
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Morishita Hisashi
The Department Of Communications Engineering National Defense Academy
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Koyanagi Y
Panasonic Mobile Communications Co. Ltd.
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Morishita Hisashi
Dept. Of Electrical And Electronic Engineering National Defense Acad.
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