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Search Publications by: Jim Booth (Fed)

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Displaying 76 - 100 of 123

Detuning and Saturation of Superconducting Devices: Formulation and Measurements

June 3, 2007
Author(s)
Carlos Collado, Jordi Mateu, James Booth, J M. Callaghan
Saturation and detuning of High Temperture Superconducting (HTS) resonators and filters may occur due to the inherent nonlinear properties of the superconductor. In HTS transmission lines, these nonlinear properties introduce a dependence of the inductance

Disorder effects on the intrinsic nonlinear current density in YBa2Cu3O7

June 1, 2007
Author(s)
Brian M. Andersen, James Booth, P.J. Hirschfeld
We present harmonic generation measurements of the intrinsic nonlinear current density j2 of (YBCO) films at temperatures close the Tc. Experiments on a range of different quality samples allow us to extract the dependence of j2 on the penetration depth of

Frequency Dependence of the Nonlinear Response in YBA2Cu307-x Transmission Lines

January 5, 2007
Author(s)
Jordi Mateu, James Booth, Brian Moeckly
We evaluate the frequency dependence of the nonlinear response in High Temperature Superconductor YBa2Cu3O7-x thin films by simultaneously measuring the nonlinear intermodulation products and harmonic generation in broadband superconducting transmission

Microfluidic Method for Thermal Cycling by Microwave Dielectric Heating

November 9, 2006
Author(s)
Pierre-Alain Auroux, Jayna J. Shah, James Booth, Mulpuri Rao, Laurie E. Locascio, Michael Gaitan
We report on temperature time domain and spectral measurements for on-chip microwave thermocycling. In particular we observe enhanced specificity of the heating of a targeted sample compared to conventional heating block-based thermocyclers. Spatial

A current-density scale for characterizing nonlinearity in high-Tc superconductors

June 1, 2005
Author(s)
Kenneth Leong, James C. Booth, Susan A. Schima
In this paper, we characterize microwave nonlinearity in a high temperature superconducting (HTS) thin film sample by measurement of a geometry-independent current-density scale j o. This quanity j specifies the strenth of a material-dependent nonlinearity

Design and Characterization of a Superconducting Nonlinear Reference Device

December 5, 2003
Author(s)
James Booth, Kenneth Leong, Susan A. Schima, Jeffrey Jargon, Donald C. DeGroot
Abstract ' We describe the design, fabrication, and testing of a nonlinear reference device that has a calculable phase relationship between the fundamental signal and higher harmonic signals in the microwave range. Such a device would be useful for

Nonlinear Microwave Response of MgB 2 Thin Films

December 1, 2003
Author(s)
James C. Booth, Kenneth Leong, S. Y. Lee, J. H. Lee, B. Oh, H. N. Lee, S. H. Moon
Thin films of the newly discovered superconductor MgB 2 show promise for a number of different electronic applications. In order to evaluate the suitability of this new material for communication applications at microwave frequencies, we have measured both

Nonlinear Microwave Response of MgB 2 Thin Films

July 11, 2003
Author(s)
James Booth, S. Y. Lee, Kenneth Leong, J. H. Lee, J. Lim, H. N. Lee, B. Oh, S. H. Moon
Thin films of the newly discovered superconductor MgB 2 show promise for a number of different electronic applications. In order to evaluate the suitability of this new material for communication applications at microwave frequencies, we have measured both
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