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Analysis of radio frequency power transmission between in/on‐body beam‐reconfigurable antennas in the medradio band
Author(s) -
Kang Seonghun,
Thuan Nguyen Van,
Won Jung Chang
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29750
Subject(s) - directional antenna , reconfigurable antenna , microwave , transmission (telecommunications) , antenna (radio) , smart antenna , beam (structure) , microwave transmission , frequency band , electrical engineering , radio frequency , electronic engineering , engineering , acoustics , omnidirectional antenna , telecommunications , physics , optics , antenna efficiency
This article presents a performance analysis of beam‐reconfigurable in/on‐body antennas. Both antennas operated within the Medical Device Radio Communications Service band (MedRadio band: 401–406 MHz) and were designed to steer the beam directions. To implement the beam‐steering capability, the two antennas used two artificial switches. The in/on‐body antennas were fabricated on FR‐4 and fabric substrate, respectively. A skin‐mimicking model ( ε r = 46.74, σ = 0.69 S m −1 ) was adopted for the simulations and measurements of the two antennas. We performed transmission and reception tests between in/on‐body antennas in an antenna chamber. The test was implemented in various cases, with different antenna distance and angle values. In addition, we compared received power between the calculated results (by virtue of the Friis transmission equation) and the actual measured results, and summarize these findings herein. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1163–1169, 2016; View this article online at wileyonlinelibrary.com . DOI 10.1002/mop.29750