Coplanar Waveguide, a Surface Strip Transmission Line Suitable for Nonreciprocal Gyromagnetic Device Applications

Wen, Charles H.-P.

doi:10.1109/gmtt.1969.1122668

Cited by 58 publications

(22 citation statements)

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“…In this case, the magnetic moments will precess in (xz)-plane, the same plane where the microwave magnetic field is elliptically polarized. If the directions of rotation of inner magnetization vector inside the ferrite and the rotation of microwave magnetic field are identical, then the spins dissipate the propagation energy [21]. Thereby, the non-reciprocity effect is created in a coplanar isolator [22].…”

Section: Measurement Cellmentioning

confidence: 99%

Characterization of thin magnetic materials for high frequency applications

Al-Rifai

Boyajian

2015

2015 Fifth International Conference on Digital Information and Communication Technology and Its Applications (DICTAP)

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Magnetic materials are fundamental part of nonreciprocal microwave components such as isolators and circulators. In order to improve the effect of the isolation, new materials with magnetic anisotropy were studied such as composites, but the determination of their magnetic properties is still a non-trivial mission. While the miniaturization of these microwave components is becoming more compulsory, a new characterization method suitable for thin magnetic layers is presented. The described technique allows the estimation of diagonal and extra-diagonal components of the permeability tensor.

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Section: Measurement Cellmentioning

confidence: 99%

Characterization of thin magnetic materials for high frequency applications

Al-Rifai

Boyajian

2015

2015 Fifth International Conference on Digital Information and Communication Technology and Its Applications (DICTAP)

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“…The CPW ground plane are connected by the anchors and the bridge membrane is connected to the grounds at both ends of the transmission line. This type of transmission line provides ground as well as signal conductor on the top surface of an isolated substrate [7]. DMTL The center conductor provides each the electrostatic actuation effort and therefore the RF capacitance between the transmission line cable and therefore the ground.…”

Section: A Design Considerationsmentioning

confidence: 99%

A novel design of 4-bit distributed MEMS transmission line (DMTL) phase shifter using an RF shunt capacitive MEMS switch for phased array antenna

Devi¹,

Maity²,

Datta³

2014

International Conference for Convergence for Technology-2014

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In this paper, coplanar waveguide (CPW) of dimension (0.2/1.6/0.2) mm has been used as the transmission line on which a ten number of Capacitive Shunt RF Mems Switches are periodically spaced in order to achieve appreciable phase shift. The dimensions of the transmission line may be designed to provide a transmission line of 50Ω characteristic impedance periodically. A 4-bit Distributed Mems transmission line (DMTL) phase shifter has been designed and provides the phase shifts of 90 0 /354 0 /336 0 depending on the combination of bits being used. The frequency of the complete designed is taken as 3-4 GHz of Sband and resonant frequency of around 3.55 GHz. A highly integrated complete structure has been designed on FR4-epoxy substrate having relative permittivity of 4.4 and has the area of 164.17 X 85.49 mm 2 only. The designed and analysis is performed by using High Frequency Structural Simulator (HFSS version 13.0) software.

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“…Moreover, the CPW technology, is suitable of better integration and packaging with respect to the microstrip one [1][2][3][4]. Several improvements have been also proposed in literature for CPW micro-machined, trenched and SU-8 elevated structures [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Technology and test of coplanar grounded wave-guides on micro-machined Si wafers

Lucibello

Angelis

Proietti

et al. 2008

2008 International Semiconductor Conference

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Coplanar wave-guide grounded lines (CPWG) have been designed, realized by micromachining of high resistivity silicon wafers and tested up to 40 GHz. Different configurations have been compared between them by changing the dimensions of the micro-machined via-holes used for the ground connection, as well as their number and separation, to get the optimal electrical matching conditions. Wide-band matching and losses as low as 0.1-0.2 dB/mm have been obtained within the 40 GHz range, in agreement with the predicted behaviour.

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Coplanar Waveguide, a Surface Strip Transmission Line Suitable for Nonreciprocal Gyromagnetic Device Applications

Cited by 58 publications

References 0 publications

Characterization of thin magnetic materials for high frequency applications

Characterization of thin magnetic materials for high frequency applications

A novel design of 4-bit distributed MEMS transmission line (DMTL) phase shifter using an RF shunt capacitive MEMS switch for phased array antenna

Technology and test of coplanar grounded wave-guides on micro-machined Si wafers

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