Search Results - "Weikle, R. M."

Opening the terahertz window with integrated diode circuits by Crowe, T.W., Bishop, W.L., Porterfield, D.W., Hesler, J.L., Weikle, R.M.

“…The terahertz region of the electromagnetic spectrum, spanning from 100 GHz through 10 THz, is of increasing importance for a wide range of scientific,…”
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The Design, Fabrication and Test Results of a 1.6 THz Superconducting Hot Electron Bolometer Mixer on SOI by Schultz, J., Herald, D.L., Haiyong Xu, Lei Liu, Bass, R.B., Weikle, R.M., Lichtenberger, A.W.

“…Interest in THz technology is growing, with projects such as the Atacama large millimeter array (ALMA) astronomical observatory, biohazard remote detection,…”
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Method for characterizing the contact resistance of metal-vanadium dioxide thin film interfaces by Percy, R., Kittiwatanakul, S., Lu, J., Stan, M., Wolf, S., Weikle, R. M.

“…The standard method for determining the contact resistance of planar metal-semiconductor interfaces can underestimate the true contact resistance under normal…”
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Submillimeter-wave sideband generation using varactor Schottky diodes by Kurtz, D.S., Hesler, J.L., Crowe, T.W., Weikle, R.M.

“…A submillimeter-wave sideband generator based on phase modulation is described. The sideband generator consists of a whisker-contacted Schottky varactor…”
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Accuracy of the conductance catheter for measurement of ventricular volumes seen clinically: effects of electric field homogeneity and parallel conductance by Wu, C.C., Skalak, T.C., Schwenk, T.R., Mahler, C.M., Anne, A., Finnerty, P.W., Haber, H.L., Weikle, R.M., Feldman, M.D.

“…The conductance-volume method is an important clinical tool which allows the assessment of left ventricular function in vivo. However, the accuracy of this…”
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A millimeter-wave six-port reflectometer based on the sampled-transmission line architecture by Ulker, S., Weikle, R.M.

“…This letter presents a proof-of-concept implementation of a millimeter-wave reflectometer for measuring complex reflection coefficients. The reflectometer is…”
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Failures in power-combining arrays by Rutledge, D.B., Nai-Shuo Cheng, York, R.A., Weikle, R.M., De Lisio, M.P.

“…We derive a simple formula for the change in output when a device fails in a power-combining structure with identical matched devices. The loss is written in…”
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A compact quadrature coupler based on coupled artificial transmission lines by Zhiyang Liu, Weikle, R.M.

“…A new compact quadrature hybrid based upon artificial transmission lines (ATLs) is presented. Miniaturization is achieved through reduced even- and odd-mode…”
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A 100-element planar Schottky diode grid mixer by Hacker, J.B., Weikle, R.M., Kim, M., De Lisio, M.P., Rutledge, D.B.

“…The authors present a Schottky diode grid mixer suitable for mixing or detecting quasi-optical signals. The mixer is a planar bow-tie grid structure…”
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On Estimating and Canceling Parasitic Capacitance in Submillimeter-Wave Planar Schottky Diodes by Xu, Haiyong, Schoenthal, Gerhard S., Liu, Lei, Xiao, Qun, Hesler, Jeffrey L., Weikle, Robert M.

“…The equivalent circuit model of a submillimeter planar diode is investigated. In particular, the parasitic finger to pad capacitance that shunts the diode…”
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A Broadband Quasi-Optical Terahertz Detector Utilizing a Zero Bias Schottky Diode by Lei Liu, Hesler, J L, Haiyong Xu, Lichtenberger, A W, Weikle, R M

“…A quasi-optical broadband terahertz detector using a zero bias Schottky diode mounted on a self-complimentary sinuous antenna has been developed. Design and…”
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A 5 mW and 5% efficiency 210 GHz InP-based heterostructure barrier varactor quintupler by Qun Xiao, Yiwei Duan, Hesler, J.L., Crowe, T.W., Weikle, R.M.

“…This letter reviews the design, construction, and measurement of a 210 GHz heterostructure barrier varactor frequency quintupler. The quintupler utilizes…”
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Analysis of an octagonal micromachined horn antenna for submillimeter-wave applications by Hesler, J.L., Hui, K., Dahlstrom, R.K., Weikle, R.M., Crowe, T.W., Mann, C.M., Wallace, H.B.

“…An analysis is presented of a new horn antenna, fabricated by a novel micromachining technique, that uses crystallographic etching of silicon and ultraviolet…”
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Millimeter-wave sideband generation using varactor phase modulators by Kurtz, D.S., Hesler, J.L., Crowe, T.W., Weikle, R.M.

“…A sideband generator based on phase modulation is presented. The sideband generator consists of a Schottky varactor diode mounted in a WR-10 waveguide tuned…”
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A 100-MESFET planar grid oscillator by Popovic, Z.B., Weikle, R.M., Kim, M., Rutledge, D.B.

“…A 100-MESFET oscillator which gives 21 W of CW effective radiated power (ERP) with a 16-dB directivity and a 20% DC-to-RF conversion efficiency at 5 GHz is…”
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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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Gain bandwidth and noise characteristics of millimeter-wave YBa2Cu3O7 hot-electron bolometer mixers by Li, C.-T., Deaver, B. S., Lee, Mark, Weikle, R. M., Rao, R. A., Eom, C. B.

“…Conversion gain bandwidth and noise characteristics are reported for lattice-cooled superconducting YBa2Cu3O7 hot-electron bolometers acting as low-power,…”
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Integrated 585-GHz Hot-Electron Mixer Focal-Plane Arrays Based on Annular Slot Antennas for Imaging Applications by Lei Liu, Haiyong Xu, Lichtenberger, A W, Weikle, R M

“…We have developed 585-GHz quasi-optical mixers and focal-plane arrays (FPAs) comprised of planar annular slot antennas (ASAs) with integrated niobium…”
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Micromachined Probes for Submillimeter-Wave On-Wafer Measurements-Part I: Mechanical Design and Characterization by Reck, T. J., Lihan Chen, Chunhu Zhang, Arsenovic, A., Groppi, C., Lichtenberger, A. W., Weikle, R. M., Barker, N. S.

“…The mechanical design and characterization of a micromachined on-wafer probe scalable to submillimeter-wave frequencies is presented. The design consists of a…”
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