Electrically small ferrite antenna gain with dc magnetic field for mobile device application

Jaejin Lee; Yang Ki Hong; Woncheol Lee; Jihoon Park; Terumitsu Tanaka; Changhan Yun

doi:10.1002/mop.28377

Electrically small ferrite antenna gain with dc magnetic field for mobile device application

Jaejin Lee, Yang Ki Hong, Woncheol Lee, Jihoon Park, Terumitsu Tanaka, Changhan Yun

Electronic Devices

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate that electrically small ferrite antenna gain is significantly increased with a small dc magnetic field of compact Nd-Fe-B permanent magnet (9.5 × 4.6 × 1.5 mm³). The experimental magnetic tangent loss of the Ni-Mn-Co ferrite decreased by about 62%, which was from 0.509 with 0 Gauss to 0.192 with 750 Gauss. The antenna gain increased by 54% (from -10.58 to -4.81 dBi) when the magnetic field of 1600 Gauss was applied to the antenna. The ferrite antenna has the volume of 0.346 cm³ and shows omnidirectional patterns, which are suitable for hand-held mobile device applications.

Original language	English
Pages (from-to)	1531-1534
Number of pages	4
Journal	Microwave and Optical Technology Letters
Volume	56
Issue number	7
DOIs	https://doi.org/10.1002/mop.28377
Publication status	Published - Jul 2014

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1002/mop.28377

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title = "Electrically small ferrite antenna gain with dc magnetic field for mobile device application",

abstract = "We demonstrate that electrically small ferrite antenna gain is significantly increased with a small dc magnetic field of compact Nd-Fe-B permanent magnet (9.5 × 4.6 × 1.5 mm3). The experimental magnetic tangent loss of the Ni-Mn-Co ferrite decreased by about 62%, which was from 0.509 with 0 Gauss to 0.192 with 750 Gauss. The antenna gain increased by 54% (from -10.58 to -4.81 dBi) when the magnetic field of 1600 Gauss was applied to the antenna. The ferrite antenna has the volume of 0.346 cm3 and shows omnidirectional patterns, which are suitable for hand-held mobile device applications.",

author = "Jaejin Lee and Hong, {Yang Ki} and Woncheol Lee and Jihoon Park and Terumitsu Tanaka and Changhan Yun",

year = "2014",

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T1 - Electrically small ferrite antenna gain with dc magnetic field for mobile device application

AU - Lee, Jaejin

AU - Hong, Yang Ki

AU - Lee, Woncheol

AU - Park, Jihoon

AU - Tanaka, Terumitsu

AU - Yun, Changhan

PY - 2014/7

Y1 - 2014/7

N2 - We demonstrate that electrically small ferrite antenna gain is significantly increased with a small dc magnetic field of compact Nd-Fe-B permanent magnet (9.5 × 4.6 × 1.5 mm3). The experimental magnetic tangent loss of the Ni-Mn-Co ferrite decreased by about 62%, which was from 0.509 with 0 Gauss to 0.192 with 750 Gauss. The antenna gain increased by 54% (from -10.58 to -4.81 dBi) when the magnetic field of 1600 Gauss was applied to the antenna. The ferrite antenna has the volume of 0.346 cm3 and shows omnidirectional patterns, which are suitable for hand-held mobile device applications.

AB - We demonstrate that electrically small ferrite antenna gain is significantly increased with a small dc magnetic field of compact Nd-Fe-B permanent magnet (9.5 × 4.6 × 1.5 mm3). The experimental magnetic tangent loss of the Ni-Mn-Co ferrite decreased by about 62%, which was from 0.509 with 0 Gauss to 0.192 with 750 Gauss. The antenna gain increased by 54% (from -10.58 to -4.81 dBi) when the magnetic field of 1600 Gauss was applied to the antenna. The ferrite antenna has the volume of 0.346 cm3 and shows omnidirectional patterns, which are suitable for hand-held mobile device applications.

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JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

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Electrically small ferrite antenna gain with dc magnetic field for mobile device application

Abstract

All Science Journal Classification (ASJC) codes

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