91 citations · 235 across the 7 of their papers we have counts for
14 papers
Permittivity of waste-activated sludge by an open-ended coaxial line
J. S. Bobowski, T. Johnson, C. Eskicioglu
The complex permittivity of thickened waste activated sludge (WAS) was measured from 3 MHz to 40 GHz. The solid content of the thickened WAS sample was varied from 4.5% to 18% by w…
Permittivity measurements of biological samples by an open-ended coaxial line
J. S. Bobowski, T. Johnson
We previously reported on the complex permittivity and dc conductivity of waste-activated sludge. The measurements, spanning a frequency range of 3 MHz to 40 GHz, were made using a…
Calibrated Single-Contact Voltage Sensor for High-Voltage Monitoring Applications
Jake S. Bobowski, Saimoom Ferdous, Thomas Johnson
A single-contact voltage sensor designed for accurate measurements of ac voltages across a pair of conductors is described. The sensor design is motivated by remote monitoring appl…
The Complex Permeability of Split-Ring Resonator Arrays Measured at Microwave Frequencies
Sabrina L. Madsen, Jake S. Bobowski
We have measured the relative permeability of split-ring resonator (SRR) arrays used in metamaterials designed to have over a narrow range of microwave frequencies. T…
Permittivity and Conductivity Measured using a Novel Toroidal Split-Ring Resonator
Jake S. Bobowski, Aaron P. Clements
We describe and demonstrate the use of a novel toroidal split-ring resonator to make accurate and precise measurements of the permittivity of liquids and gases. We first analytical…
Automation of the Cavendish Experiment to 'Weigh the Earth'
J. J. Andrews, J. S. Bobowski
We describe a simple and inexpensive method for automating the data collection in the well-known Cavendish torsion balance experiment to determine the gravitational constant . T…