NDLI: Near-field gain measurement of waterproofed shielded loop antenna in tissue-equivalent liquid

Content Provider	IEEE Xplore Digital Library
Author	Toyoshima, H. Ishii, N. Hamada, L. Watanabe, S.
Copyright Year	2012
Description	Author affiliation: National Institute of Information and Communications Technology, 4-2-1, Nukui-Kitamachi, Koganei, Tokyo, 184-9795, Japan (Hamada, L.; Watanabe, S.) \|\| Graduate School of Science and Technology, Niigata University, 8050, Ikarashi 2-nocho, Nishi-ku, Niigata, 950-2181, Japan (Toyoshima, H.; Ishii, N.)
Abstract	Recently, it has been expected that the wireless energy transmission system which uses the phenomenon of magnetic-field resonance will be launched and the methodology of estimating SAR (Specific Absorption Rate) for this system can be required. In this system, the distance that the energy can transfer between the transmitted and received equipments will be tens of centimeters. To estimate SAR for the mobile communication devices, a standard SAR measurement system is generally used to measure the electric-field intensity in the tissue-equivalent liquid surrounded by the shell shaped like a half of head with an electric-field probe [1],[2]. Conversely, the magnetic-field is so dominant that the SAR measurement with the electric-field probe cannot be made accurate at the frequencies which might be allocated for the wireless energy transmission. Therefore, the SAR measurement with the magnetic-field probe should be developed. Also, the magnetic-field probe should be calibrated by relating its voltage to the magnetic-field intensity produced by a shielded loop antenna, which is a candidate of reference antennas at those frequencies.
Starting Page	1087
Ending Page	1090
File Size	162875
Page Count	4
File Format	PDF
ISBN	9781467310017
e-ISBN	9784885522703
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-29
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electronics, Information and Communication Engineers (IEICE)
Subject Keyword	Antenna measurements Magnetic liquids Gain measurement Magnetic noise Antennas Gain Magnetic shielding
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Constant near-field gain for a shielded loop antenna operated in the liquid at 30 MHz

Gain calibration in near-field region of antenna in tissue-equivalent liquid for SAR assessment

Simulated near-field gain and E-field intensity of insulated loop antenna in the liquid at 30 MHz

Measurements of near-field shielding effectiveness by small loop antennas

A standard shielded loop antenna with load resistor

Impedance Method for a Shielded Standard Loop Antenna

A $60×60μm^{2}$ size planar shielded loop probe for low lift-off on-chip magnetic near field measurements

A study on measurement method of shielding effectiveness using loop antenna in low-frequency

Near field to far field transformation by using equivalent sources in HF band

Near-field gain measurement of waterproofed shielded loop antenna in tissue-equivalent liquid

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