NIST releases split-cylinder resonator measurement software.NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. has released SplitC, an automated software program for measuring the high-frequency electrical properties of dielectric substrates using a split-cylinder resonator resonator /res·o·na·tor/ (rez´o-na?ter) 1. an instrument used to intensify sounds. 2. an electric circuit in which oscillations of a certain frequency are set up by oscillations of the same frequency in another . With this software, developed by a NIST scientist, manufacturers of printed-wiring boards, ceramics substrates, and other low-loss dielectric materials Dielectric materials Materials which are electrical insulators or in which an electric field can be sustained with a minimal dissipation of power. Dielectrics are employed as insulation for wires, cables, and electrical equipment, as polarizable media for can use the split-cylinder resonator method to non-destructively measure the dielectric constant dielectric constant n. See permittivity. and loss tangent over a frequency range of 5 GHz to 50 GHz. Included in this release of SplitC is a new theoretical model for the split-cylinder resonator, derived using the mode-matching method, which improves measurement accuracy and decreases computation time. In addition, SplitC incorporates a new method, recently developed by NIST staff, for measuring the resonant frequency resonant frequency, n the specific frequency at which an object vibrates. and quality factor of resonance curves, resulting in a reduction of measurement uncertainty. This release of SplitC follows the successful test of an earlier beta version in which participants from industry and academia published meas-urement data for a wide range of dielectric materials. CONTACT: Robert Judish, (303) 497-3380; judish@boulder.nist.gov. |
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