High-Order Mode Cutoff In Rectangular Striplines (Short Papers)

Weil, Claude; Gruner, L.

doi:10.1109/tmtt.1984.1132745

Cited by 27 publications

(11 citation statements)

References 6 publications

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“…A is the absorption loss, R is the reflection loss, and B is the multiple reflection loss. SE changes according to the shielding material and frequency [5][6][7][8].…”

Section: Shielding Effectivenessmentioning

confidence: 99%

Characteristics simulation of wireless power transfer system considering shielding distance

Lee¹,

Choi²,

Jung³

et al. 2015

Progress in Superconductivity and Cryogenics

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Wireless power transfer technology is using the magnetic resonance recently drawing increased attention. It uses the resonance between transmitter and receiver coils to transfer power. Thus, it can improve the transfer distance and efficiency compared with the existing magnetic induction technique. The authors found from the previous study that the application of the superconductor coil to the magnetic resonance wireless power transfer system improved its efficiency. Its application to real life, however, requires the additional study on the effects of adjacent materials. In this study, the two resonance coils made by superconductor coils were used to aluminum and plastic shielding materials was placed between the coils. S-parameters were analyzed according to the position of the shielding material between the transmitter and receiver coils. As a result, the plastic of shielding material had no effect, but the aluminum of shielding material affected the wireless power transfer due to the shielding effectiveness.

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“…A is the absorption loss, R is the reflection loss, and B is the multiple reflection loss. SE changes according to the shielding material and frequency [5][6][7][8].…”

Section: Shielding Effectivenessmentioning

confidence: 99%

Characteristics simulation of wireless power transfer system considering shielding distance

Lee¹,

Choi²,

Jung³

et al. 2015

Progress in Superconductivity and Cryogenics

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“…1, the asymmetric TEM cells have the symmetric shape in the right-and left-hand side to axis. When the component of TE and TM is even modes (i.e., even), there exists an electric wall along the center in the direction [5], [9]. When is odd, there exists a magnetic wall along the center in the direction.…”

Section: Half-mode Boundarymentioning

confidence: 99%

“…The majority of the previous works [5]- [9] used the quarter-mode boundaries to get the cutoff frequencies in the TEM cells. However, the quarter-mode boundaries can not be applied to find the cutoff frequencies in the asymmetric TEM cells because the inner conductor is arbitrarily located up and down, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

Numerical solution of higher order mode cutoff frequencies in asymmetric TEM cells by Galerkin method

Yun

Lee

Kim

1999

IEEE Trans. Electromagn. Compat.

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The authors describe a Galerkin method (GM), which determines efficiently the basis functions satisfying the edge conditions and the size of the elements on the Neumann boundaries in this paper. The calculated higher order mode cutoff frequencies in both symmetric and asymmetric TEM cells by the GM are presented. The authors could then solve the technical debate for TE 12 -, TE 03 -, TM 11 -, and TM 12 -mode cutoff frequencies in the symmetric TEM cell. It is also shown that the measured resonant frequencies of a designed asymmetric TEM cell agree well with the predicted data by the GM.

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“…From symmetry considerations, similar formulas for D^and D,, can be derived, where the relation between D^,Df,, and D^is abc (14) In papers by Stoner [10] and Osbom [9] 2/r -n (16) until only a certain percentage of radiation leaks beyond some point C, shown in Figure 2. Collin [17] demonstrates that the ratio of the width of the ground plane to the width of the center conductor should be approximately 3 The first measurements of magnetic properties were taken on a relatively low-loss magnetic material, followed by measurements on a sample with high values of both the real and imaginary components.…”

Section: Introductionmentioning

confidence: 99%