Search Results - "Barker, N S"

Failure of Au RF-MEMS switches subjected to dynamic loading by Kimberley, J., Cooney, R.S., Lambros, J., Chasiotis, I., Barker, N.S.

“…The dynamic failure of Au RF-MEMS was investigated over a wide range of loading rates by three different experimental setups: a drop weight tower, which…”
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Strain rate effects on the mechanical behavior of nanocrystalline Au films by Chasiotis, I., Bateson, C., Timpano, K., McCarty, A.S., Barker, N.S., Stanec, J.R.

“…The effect of fabrication, film thickness, and strain rate on the mechanical behavior of Au films with 100 nm (evaporated gold) and 200 nm (electroplated gold)…”
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Barium–strontium–titanate thin films for application in radio-frequency-microelectromechanical capacitive switches by Kirchoefer, S. W., Cukauskas, E. J., Barker, N. S., Newman, H. S., Chang, W.

“…In this letter we report the application of barium–strontium–titanate (BST) thin film oxides as the dielectric layer in radio-frequency-microelectromechanical…”
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Optimization of distributed MEMS phase shifters by Barker, N.S., Rebeiz, G.M.

“…The design and optimization of a 0-60 GHz distributed MEMS true-time delay phase shifter is presented with theory verified by experimental results. The phase…”
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Distributed MEMS true-time delay phase shifters and wide-band switches by Barker, S., Rebeiz, G.M.

“…Wide-band switches and true-time delay (TTD) phase shifters have been developed using distributed microelectromechanical system (MEMS) transmission lines for…”
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Gasification and pyrolysis - routes to competitive electricity production from biomass in the UK by Barker, SN

“…Biomass has the potential to become one of the largest sources of renewable, sustainable energy in the UK and many other parts of the European Union. However,…”
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Optimization of distributed MEMS transmission-line phase shifters-U-band and W-band designs by Barker, N.S., Rebeiz, G.M.

“…The design and optimization of distributed micromechanical system (MEMS) transmission-line phase shifters at both U- and W-band is presented in this paper. The…”
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Reliability of RF MEMS switches at cryogenic (liquid He) temperatures by Benoit, R.R., Barker, N.S.

“…This paper reports on the reliability of RF MEMS switches operating in a cryogenic (<6 K) environment while monitoring the repeatability of their contact…”
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A W-band dielectric-lens-based integrated monopulse radar receiver by Raman, S., Barker, N.S., Rebeiz, G.M.

“…An integrated monopulse radar receiver has been developed for tracking applications at W-band frequencies. The receiver is based on dielectric-lens-supported,…”
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Distributed MEMS transmission-line BPSK modulator by Barker, N.S., Rebeiz, G.M.

“…The application of a distributed microelectromechanical system (MEMS) transmission line as a binary phase shift keying modulator is presented. This modulator…”
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1.9-3.2 THz Schottky based harmonic mixer design and characterization by Bulcha, B. T., Hesler, J. L., Drakinskiy, V., Stake, J., Barker, N. S.

“…The development of a Schottky diode based 1:9 - 3:2 THz harmonic mixer with high conversion efficiency is described. The mixer will be used as part of an…”
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A Rectangular-Waveguide Contacting Sliding Short for Terahertz Frequency Applications by Stanec, J. R., Barker, N. S.

“…This paper presents and refines a rectangular-waveguide sliding-short design that is resistant to mechanical disturbances and yields excellent voltage…”
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Fabrication and Integration of Micromachined Submillimeter-Wave Circuits by Stanec, J. R., Barker, N. S.

“…Micromachining techniques have been shown to have the necessary precision to fabricate accurate submillimeter-wave circuits and structures; however, few…”
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Distributed MEMS tunable matching network using minimal-contact RF-MEMS varactors by Qin Shen, Barker, N.S.

“…This paper presents the design, fabrication, and measurement of a double-slug tunable matching network based on a distributed microelectromechanical-system…”
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On-wafer Measurements of Responsivity of FET-based subTHz Detectors by Kopyt, P., Salski, B., Zagrajek, P., Bauwens, M., Obrebski, D., Marczewski, J., Barker, N. S.

“…This article describes a novel approach to measure responsivity of a FET-based sub-THz detector using on-wafer probes to directly feed a bare antenna-less…”
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An Experimental Technique for Calibration Uncertainty Analysis by Arsenovic, A., Lihan Chen, Bauwens, M. F., Huilin Li, Barker, N. S., Weikle, Robert M.

“…An experimentally based technique for characterizing calibration uncertainty is presented. The approach described calculates uncertainty metrics at the output…”
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Micromachined Probes for Submillimeter-Wave On-Wafer Measurements-Part II: RF Design and Characterization by Reck, T. J., Lihan Chen, Chunhu Zhang, Arsenovic, A., Groppi, C., Lichtenberger, A., Weikle, R. M., Barker, N. S.

“…The electromagnetic design and characterization of a micromachined submillimeter-wave on-wafer probe is presented. The mechanical design and fabrication of the…”
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Terahertz Micromachined On-Wafer Probes: Repeatability and Reliability by Lihan Chen, Chunhu Zhang, Reck, T. J., Arsenovic, A., Bauwens, M., Groppi, C., Lichtenberger, A. W., Weikle, R. M., Barker, N. S.

“…An improved micromachined on-wafer probe covering frequencies 500-750 GHz is demonstrated in this paper to address sub-millimeter-wave integrated-circuit…”
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Phase locking of a 2.5 THz quantum cascade laser to a microwave reference using THz Schottky mixer by Bulcha, B. T., Hesler, J. L., Valavanis, A., Drakinskiy, V., Stake, J., Dong, R., Zhu, J. X., Dean, P., Li, L. H., Davies, A. G., Linfield, E. H., Barker, N. S.

“…The frequency of a 2.5 THz QCL are stabilized to sub-hertz accuracy by phase-locking to a stable 100 MHz microwave reference, using a 2.3-3.2 THz room…”
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Study of Broadband Cryogenic DC-Contact RF MEMS Switches by Songbin Gong, Hui Shen, Barker, N.S.

“…A dielectric-free DC-contact RF microelectromechanical system (MEMS) switch is designed and tested at room temperature and cryogenic temperatures. The switch…”
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