Estimation of distance property of field intensity produced by loop antenna operated in MHz band and immersed in liquid in terms of near-field gain

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420361
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Niigata University
• Principal Investigator: ISHII Nozomu 新潟大学, 自然科学系, 准教授 (50232236)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 近傍界利得 / 距離特性 / 電界強度 / シールデッドループアンテナ / MHz液剤

Outline of Final Research Achievements

It was examined the feasibility of the calibration method of the probe using a reference antenna which is required for implementing the method of inserting the probe into the tissue equivalent liquid, which is one of the methods for SAR (specific absorption rate) evaluation in MHz band.
By appropriately selecting the size of a shielded loop antenna (SLA), which is a reference antenna, as its near-field gain is constant, it is possible to estimate the the electric field intensity radiated from the reference antenna, and it was confirmed that it is possible to realize the probe calibration in tissue-equivalent liquid for SAR evaluation in MHz band.

Free Research Field

アンテナ工学