The electrically small magnetically loaded multiturn loop antenna

DeVore, R.V.; Bohley, P.

doi:10.1109/tap.1977.1141627

Cited by 14 publications

(7 citation statements)

References 4 publications

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“…As suggested before the new revised expression of should also be able to derived and validated through field analysis. So in this dissertation, an expression of similar to (2.11) will be derived in a closed form through field modeling of an ideal thin-film ferrite radiator, like [18] and unlike [20]. The agreement in form of the exhibited in this dissertation to (2.11) will further substantiate the situation where ferrites with very large ′′ can reach high efficiency in ESA designs.…”

Section: Chapter II Motivations and A New Approach 21 A False Assumption For Ferrites Loaded Esasmentioning

confidence: 68%

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Ferromagnetic Resonance-Enhanced Electrically Small Antennas

Luong

Yao

et al. 2021

IEEE Trans. Antennas Propagat.

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Section: Chapter II Motivations and A New Approach 21 A False Assumption For Ferrites Loaded Esasmentioning

confidence: 68%

“…Sooner after DeVore [20] derives the radiation efficiency of the same type of ESAs through radiation resistance and loss resistance perspective. The expression of yields as below:…”

Section: Previous Attempts To the State Of The Artmentioning

confidence: 99%

Ferromagnetic Resonance-Enhanced Electrically Small Antennas

Luong

Yao

et al. 2021

IEEE Trans. Antennas Propagat.

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“…The geometry of the small FM radio ferrite sheet flexible antenna using an arrow‐shaped patch to enhance gain performance for mobile handsets is shown in Figure 1. Ferrite antennas have been known since 1940s and have been extensively analyzed in the literature [5–7]. They are a popular choice for commercial pocket‐sized radios and pagers [8].…”

Section: Antenna Design and Resultsmentioning

confidence: 99%

Design of an internal FM radio antenna for mobile handsets with an arrow‐shaped patch

Choi

Kim²,

Seong³

et al. 2011

Micro & Optical Tech Letters

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This article describes the design, fabrication, and measurement of an internal FM radio ferrite sheet flexible antenna using an arrow‐shaped patch to enhance passive gain performance for mobile handsets.To obtain sufficient passive gain performance ≥–20 dBi, an arrow‐shaped patch is inserted in the antenna radiator and monopole type wire is used. The measured result of the fabricated antenna provides passive gain performance (15.6–13.5 dBi) from 86 to 108 MHz with the frequency modulation (FM) bandwidth from 83.20 to 123.72 MHz (≤voltage standing wave ratio (VSWR) 6:1). Also, a good radiation pattern is achieved within the FM bandwidth (86–108 MHz) range. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26180

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“…A ferrite rod antenna is classified as an electrically small loop antenna [31]. This is the simplest structure, and an electrically small air core loop antenna is usually classified as electrically small λ/2π < 0.16 λ [32,33]. An antenna volume can be physically bounded by a sphere with a radius equal to λ/2π.…”

Section: The Basic Theory: Lf-framentioning

confidence: 99%

Optimization of the Alignment Method for an Electric Vehicle Magnetic Field Wireless Power Transfer System Using a Low-Frequency Ferrite Rod Antenna

Seong

Lee

2019

Energies

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The establishment of international and regional standards for electric vehicle (EV) magnetic field wireless power transfer (MF-WPT) systems started in 2010 by the Society of Automotive Engineers (SAE). In the meantime, the EV MF-WPT standardization has been focused on primary device and secondary device topology. Recently, the International Organization for Standardization (ISO), the International Electrotechnical Commission (IEC), and SAE have begun describing the communication and alignment techniques for EV MF-WPT. In this paper, we present a fine positioning method using a low-frequency (LF) signal, as mentioned in IEC 61980 and SAE J2954. Through modeling and simulation, we optimized a LF ferrite rod antenna (FRA) for EV MF-WPT fine positioning. We also found the optimal arrangement of LF-FRAs on primary device and secondary device Finally, we used a test bench to experiment and check the results of our proposal.

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The electrically small magnetically loaded multiturn loop antenna

Cited by 14 publications

References 4 publications

Ferromagnetic Resonance-Enhanced Electrically Small Antennas

Ferromagnetic Resonance-Enhanced Electrically Small Antennas

Design of an internal FM radio antenna for mobile handsets with an arrow‐shaped patch

Optimization of the Alignment Method for an Electric Vehicle Magnetic Field Wireless Power Transfer System Using a Low-Frequency Ferrite Rod Antenna

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