Some improved formulas for the Westmijze head

Matzner, H.; Shtrikman, S.

doi:10.1109/20.560117

Cited by 14 publications

(6 citation statements)

References 8 publications

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“…where ρ is the distance to the edge and α the edge angle. Applied to our case, we have y = ρ, α = π 2 yielding ν = 2 3 thus the y − 1 3 behaviour confirmed by Matzner et al 7 .…”

Section: Using Tansupporting

confidence: 83%

The Karlqvist approximation revisited

Tannous

2015

Preprint

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“…where ρ is the distance to the edge and α the edge angle. Applied to our case, we have y = ρ, α = π 2 yielding ν = 2 3 thus the y − 1 3 behaviour confirmed by Matzner et al 7 .…”

Section: Using Tansupporting

confidence: 83%

The Karlqvist approximation revisited

Tannous

2015

Preprint

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“…(2.21) and (2.22)] (8) where, for clarity, we use the notation to be the start and to be the end of a layer of thickness and…”

Section: Inclusion Of Magnetizationmentioning

confidence: 99%

“…Two classic simple approximations to 2-D fields were given by Karlqvist [2] for a simple gapped ring head and Potter [3] for the double-shielded structure found in magnetoresistive (MR) read heads. A number of approaches for generating increasingly accurate and fast approximations have been developed [4]- [8]. These have included configurations for perpendicular recording, where a soft underlayer is included [9]- [11].…”

Section: Introductionmentioning

confidence: 99%

Readback Responses for Complex Recording Media Configurations

Wilton

Wood

2004

IEEE Trans. Magn.

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This paper describes a relatively simple approach to calculating the frequency response for a two-dimensional (2-D) magnetic recording system with a medium that can include an arbitrary number of layers. Each layer may have an arbitrary magnetization direction, anisotropic permeability, and exchange coupling. The approach relies on an initial transformation into the spatial frequency domain and then the use of transmission matrices to relate the fields in the different layers. The approach is general in that it provides a method for finding the field configuration for any set of 2-D magnetic sources embedded in a layered magnetic medium with a linear -relationship. Here, we focus on calculating the readback response for a variety of longitudinal and perpendicular recording configurations. Since the permeability may have any wavelength dependence, we can easily include the effect of exchange coupling in the underlayer.

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“…We choose expansion functions which contain the physical behavior of the fields near the edge of the arcs, having the proper symmetry and an analytical Fourier transform [3]:…”

Section: Choosing the Expansion Functionsmentioning

confidence: 99%

“…One approach to the problem is using a locally distorted mesh where the basic Cartesian grid is modified only in the vicinity of the metal boundaries. One such scheme, the contour path finite difference time-domain (CPFDTD [3][4][5][6][7]) scheme, is formulated in terms of the integral form of Maxwell's equations instead of the usual differential form.…”

Section: Introductionmentioning

confidence: 99%

Efficient moment method solution for a shielded two arc type wires transmission line

Diveker

Levi

Matzner

et al. 2002

Micro & Optical Tech Letters

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This suggests that a resonant frequency tuning range of 240 MHz in this study for the constructed DR antennas is obtained.Also, the impedance bandwidth for the case with l ϭ 20 mm was measured to be 3.5%, which is greater than that of a corresponding regular DRA (2.8%). This behavior is largely owing to the embedded slots in the ground plane, which causes the lowering of the quality factor of the DR antenna. Radiation characteristics of the constructed prototypes were also studied. Figure 4 plots measured radiation patterns of the prototypes. Good broadside radiation characteristics are observed, and the obtained antenna gain was about 6 dBi. CONCLUSIONSMicrostripline-fed frequency tunable DR antennas have been demonstrated. Experimental results of the constructed prototypes show a resonant frequency tuning range of more than 10% of the antenna's resonant frequency. Also, the proposed antenna allows post-manufacturing resonant frequency tuning to compensate for manufacturing tolerances or possible fabrication errors, and thus meet precise frequency specifications in practical designs.

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Some improved formulas for the Westmijze head

Cited by 14 publications

References 8 publications

The Karlqvist approximation revisited

The Karlqvist approximation revisited

Readback Responses for Complex Recording Media Configurations

Efficient moment method solution for a shielded two arc type wires transmission line

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