Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Jim Booth (Fed)

Displaying 151 - 175 of 237

Intermodulation Distortion in Coupled-Resonator Filters with Non-Uniform Distributed Nonlinear Properties: Use in HTS IMD Compensation

April 1, 2007

Author(s)

Jordi Mateu, James Booth, Carlos Collado, David Seron, Juan M. O'Callaghan

This work presents a general procedure for calculating intermodulation distortion in coupled-resonator filters with non-uniform distributed nonlinear properties. This procedure allows to predict the nonlinear performance of a nonlinear filter as a function

Frequency Tuning and Spurious Signal Generation at Microwave Frequencies in Ferroelectric Thin-film Transmission Lines

February 14, 2007

Author(s)

Jordi Mateu, James Booth, S. A. Schima

This work evaluates the RF tuning and the microwave nonlinear response of SrTiO 3u thin-films by measuring the third harmonic and third order intermodulation proucts of several coplanar transmission lines. From these measurements, we obtain the distributed

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

Determination of the Superconducting Penetration Depth From Coplanar-Waveguide Measurements

November 1, 2006

Author(s)

Kenneth Leong, James C. Booth, John H. Claassen

We introduce a novel transmission line method for measurements of the penetration depth of thin high temperature supervonducting (HTS) films. The method is based on the accurate extraction of the inductance-per-unit-length of a superconducting coplanar

A Unified Description of Nonlinear Effects in High Temperature Superconductor Microwave Devices

September 2, 2006

Author(s)

James Booth, Kenneth Leong, Susan A. Schima, Jordi Mateu, Carlos Collado, Juan M. O'Callaghan

We demonstrate experimentally the equivalence of different manifestations of nonlinear response in high temperature superconductor (HTS) microwave devices. Using a combination of analytical and numerical analysis, we show that the results of

Broadband Permittivity Measurements of Liquid and Biological Samples using Microfluidic Channels

June 11, 2006

Author(s)

James Booth, Jordi Mateu, Michael D. Janezic, James R. Baker-Jarvis, James A. Beall

We have developed an integrated microfluidic/microelectronic measurement platform in order to accurately measure the dielectric properties of sub-?L volumes of liquids at frequencies up to 40 GHz. We use on-wafer calibration techniques to obtain accurate S

Characterization of the Nonlinear Response in Ferroelectric Thin-Film Transmission Lines

June 11, 2006

Author(s)

Jordi Mateu, James Booth, Susan A. Schima

This work evaluates the microwave properties of ferroelectric BaSrTi0 thin films by measuring the frequency response of several coplanar transmission lines and interdigital capacitor structures as a function of DC applied electric field from 100 Hz to 40

Measurements and Analysis of Microwave Nonlinearities in Ferroelectric Thin Film Transmission Lines

June 11, 2006

Author(s)

Jordi Mateu, James Booth, Susan A. Schima, Carlos Collado, David Seron, J M. Callaghan

This work evaluates the microwave nonlinear properties of ferroelectric BSTO thin films by measuring the frequency response of several coplanar transmission lines and interdigital capacitor structures as a function of the applied electric field from 150 Hz

Origins of Microwave Frequency Loss and Dispersion in Ferroelectric BaxSr1-xTiO3 Thin Films

August 1, 2005

Author(s)

James C. Booth, Ronald H. Ono, Kao-Shuo Chang, Ichiro Takeuchi

The microwave frequency losses and dispersion in voltage-tunable ferroelectric thin films represent serious impediments to the widespread adoption of these materials for computer and communication applications requiring components with high capacitance or

Accurate Measurements of the Intrinsic Surface Impedance of Thin Films Using a Modified Two-Tone Resonator Method

June 13, 2005

Author(s)

Jae H. Lee, James C. Booth, Kenneth Leong, David A. Rudman

We propose a modified two-tone method that could be used for sensitive measurements of the intrinsic microwave surface impedance

Phase-Sensitive Measurments of Nonlinearity in High Temperature Superconductor Thin Films at Variable Frquencies

June 2, 2005

Author(s)

James Booth, Kenneth Leong, Susan A. Schima, Jeffrey Jargon, Donald C. DeGroot

We present new frequency-dependent measurements of bothe the magnitude and phase of the nonlinear response in superconducting thin films at microwave frequencies. Our measurements show that the nonlinear inductance dominates the nonlinear response in thin

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