IEICE TRANSACTIONS on Communications
Capsule Antenna Design Based on Transmission Factor through the Human Body
Summary :
To design antennas for ingestible capsule endoscope systems, the transmission factors of dipole and loop antennas placed in the torso-shaped phantom filled with deionized water or human body equivalent liquid (HBEL) are investigated by numerical and experimental study. The S-parameter method is used to evaluate transmission characteristics through a torso-shaped phantom in a broadband frequency range. Good agreement of S-parameters between measured results and numerical analysis is observed and the transmission factors for both cases are obtained. Comparison of the transmission factors between HBEL and deionized water is presented to explain the relation between conductivity and the transmission characteristics. Two types of antennas, dipole antenna and loop antenna are compared. In the case of a dipole antenna placed in deionized water, it is observed that the transmission factor decreases as conductivity increases. On the other hand, there is a local maximum in the transmission factor at 675 MHz in the case of HBEL. This phenomenon is not observed in the case of a loop antenna. The transmission factor of capsule dipole antenna and capsule loop antenna are compared and the guideline in designing capsule antennas by using transmission factor is also proposed.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E101-B No.2 pp.357-363
- Publication Date
- 2018/02/01
- Publicized
- 2017/08/22
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.2017ISP0028
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016)
- Category
- Antennas
Authors
Yang LI
Tohoku University
Hiroyasu SATO
Tohoku University
Qiang CHEN
Tohoku University
Keyword
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Yang LI, Hiroyasu SATO, Qiang CHEN, "Capsule Antenna Design Based on Transmission Factor through the Human Body" in IEICE TRANSACTIONS on Communications,
vol. E101-B, no. 2, pp. 357-363, February 2018, doi: 10.1587/transcom.2017ISP0028.
Abstract: To design antennas for ingestible capsule endoscope systems, the transmission factors of dipole and loop antennas placed in the torso-shaped phantom filled with deionized water or human body equivalent liquid (HBEL) are investigated by numerical and experimental study. The S-parameter method is used to evaluate transmission characteristics through a torso-shaped phantom in a broadband frequency range. Good agreement of S-parameters between measured results and numerical analysis is observed and the transmission factors for both cases are obtained. Comparison of the transmission factors between HBEL and deionized water is presented to explain the relation between conductivity and the transmission characteristics. Two types of antennas, dipole antenna and loop antenna are compared. In the case of a dipole antenna placed in deionized water, it is observed that the transmission factor decreases as conductivity increases. On the other hand, there is a local maximum in the transmission factor at 675 MHz in the case of HBEL. This phenomenon is not observed in the case of a loop antenna. The transmission factor of capsule dipole antenna and capsule loop antenna are compared and the guideline in designing capsule antennas by using transmission factor is also proposed.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017ISP0028/_p
Copy
@ARTICLE{e101-b_2_357,
author={Yang LI, Hiroyasu SATO, Qiang CHEN, },
journal={IEICE TRANSACTIONS on Communications},
title={Capsule Antenna Design Based on Transmission Factor through the Human Body},
year={2018},
volume={E101-B},
number={2},
pages={357-363},
abstract={To design antennas for ingestible capsule endoscope systems, the transmission factors of dipole and loop antennas placed in the torso-shaped phantom filled with deionized water or human body equivalent liquid (HBEL) are investigated by numerical and experimental study. The S-parameter method is used to evaluate transmission characteristics through a torso-shaped phantom in a broadband frequency range. Good agreement of S-parameters between measured results and numerical analysis is observed and the transmission factors for both cases are obtained. Comparison of the transmission factors between HBEL and deionized water is presented to explain the relation between conductivity and the transmission characteristics. Two types of antennas, dipole antenna and loop antenna are compared. In the case of a dipole antenna placed in deionized water, it is observed that the transmission factor decreases as conductivity increases. On the other hand, there is a local maximum in the transmission factor at 675 MHz in the case of HBEL. This phenomenon is not observed in the case of a loop antenna. The transmission factor of capsule dipole antenna and capsule loop antenna are compared and the guideline in designing capsule antennas by using transmission factor is also proposed.},
keywords={},
doi={10.1587/transcom.2017ISP0028},
ISSN={1745-1345},
month={February},}
Copy
TY - JOUR
TI - Capsule Antenna Design Based on Transmission Factor through the Human Body
T2 - IEICE TRANSACTIONS on Communications
SP - 357
EP - 363
AU - Yang LI
AU - Hiroyasu SATO
AU - Qiang CHEN
PY - 2018
DO - 10.1587/transcom.2017ISP0028
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2018
AB - To design antennas for ingestible capsule endoscope systems, the transmission factors of dipole and loop antennas placed in the torso-shaped phantom filled with deionized water or human body equivalent liquid (HBEL) are investigated by numerical and experimental study. The S-parameter method is used to evaluate transmission characteristics through a torso-shaped phantom in a broadband frequency range. Good agreement of S-parameters between measured results and numerical analysis is observed and the transmission factors for both cases are obtained. Comparison of the transmission factors between HBEL and deionized water is presented to explain the relation between conductivity and the transmission characteristics. Two types of antennas, dipole antenna and loop antenna are compared. In the case of a dipole antenna placed in deionized water, it is observed that the transmission factor decreases as conductivity increases. On the other hand, there is a local maximum in the transmission factor at 675 MHz in the case of HBEL. This phenomenon is not observed in the case of a loop antenna. The transmission factor of capsule dipole antenna and capsule loop antenna are compared and the guideline in designing capsule antennas by using transmission factor is also proposed.
ER -
English
