Search Results - "Gerecht, E."
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Precision measurement method for cryogenic amplifier noise temperatures below 5 K
Published in IEEE transactions on microwave theory and techniques (01-03-2006)“…We report precision measurements of the effective input noise temperature of a cryogenic (liquid-helium temperature) monolithic-microwave integrated-circuit…”
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A Passive Heterodyne Hot Electron Bolometer Imager Operating at 850 GHz
Published in IEEE transactions on microwave theory and techniques (01-05-2008)“…We report on the development and characterization of a passive heterodyne hot electron bolometer (HEB) imager operating at 850 GHz. HEB detectors provide…”
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Dynamics of hyporheic flow and heat transport across a bed-to-bank continuum in a large regulated river
Published in Water resources research (01-03-2011)“…The lower Colorado River (LCR) near Austin, Texas is heavily regulated for hydropower generation. Daily water releases from a dam located 23 km upstream of our…”
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Development of integrated HEB/MMIC receivers for near-range terahertz imaging
Published in IEEE transactions on microwave theory and techniques (01-06-2006)“…We present measurement results for a new type of integrated terahertz receiver, as an extension to previous work by the authors. The receiver we developed…”
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A terahertz focal plane array using HEB superconducting mixers and MMIC IF amplifiers
Published in IEEE microwave and wireless components letters (01-04-2005)“…We present a focal plane array (FPA) designed for operation at terahertz frequencies. The FPA is based on NbN phonon-cooled hot electron bolometer mixers…”
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NbN hot electron bolometric mixers-a new technology for low-noise THz receivers
Published in IEEE transactions on microwave theory and techniques (01-12-1999)“…New advances in hot electron bolometer (HEB) mixers have recently resulted in record-low receiver noise temperatures at terahertz frequencies. We have…”
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Development of focal plane arrays with hot electron bolometer heterodyne detectors for 3 to 10 THz
Published in 2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720) (2004)“…Broadband tunable, hot electron bolometer (HEB) heterodyne detectors with receiver noise temperatures of the order of 10/spl times/hf/k in the frequency range…”
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Conference Proceeding
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NbN hot electron bolometric mixer with intrinsic receiver noise temperature of less than five times the quantum noise limit
Published in 2000 IEEE MTT-S International Microwave Symposium Digest (Cat. No.00CH37017) (2000)“…In recent years, improvements in device development and quasi-optical coupling techniques utilizing planar antennas have led to a significant achievement in…”
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New results for NbN phonon-cooled hot electron bolometric mixers above 1 THz
Published in IEEE transactions on applied superconductivity (01-06-1999)“…NbN Hot Electron Bolometric (HEB) mixers have produced promising results in terms of DSB receiver noise temperature (2800 K at 1.56 THz). The LO source for…”
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NbN hot electron bolometric mixers-a new technology for low noise THz receivers
Published in 1999 IEEE MTT-S International Microwave Symposium Digest (Cat. No.99CH36282) (1999)“…New advances in Hot Electron Bolometer (HEB) mixers have resulted in record low receiver noise temperatures at THz frequencies recently. We have developed…”
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Conference Proceeding Journal Article -
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2.5 THz NbN hot electron mixer with integrated tapered slot antenna
Published in IEEE transactions on applied superconductivity (01-06-1997)“…A Hot Electron Bolometer (HEB) mixer for 2.5 THz utilizing a NbN thin film device, integrated with a Broken Linearly Tapered Slot Antenna (BLTSA), has been…”
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HEB FPA imaging technology for security and biomedical applications
Published in 2005 Joint 30th International Conference on Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics (2005)“…We have demonstrated a low-noise heterodyne three-element focal plane array (FPA) at 1.6 THz consisting of NbN hot electron bolometric (HEB) detectors,…”
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Conference Proceeding -
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Hard surfaces obtained by using microstrip resonators
Published in Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting (1994)“…Hard surfaces allow the tangential component of the electric field not to go to zero along the surface. However, previous realizations have required a…”
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Conference Proceeding -
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Advanced imaging and spectroscopy of biological and chemical agents at terahertz frequencies
Published in 2007 Joint 32nd International Conference on Infrared and Millimeter Waves and the 15th International Conference on Terahertz Electronics (01-09-2007)“…We are developing hot electron bolometer (HEB) mixer receivers for heterodyne detection at terahertz frequencies. HEB detectors provide unprecedented…”
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Conference Proceeding -
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New results for NbN phonon-cooled Hot Electron Bolometric mixers above 1 THz
Published in IEEE transactions on applied superconductivity (1999)Get full text
Conference Proceeding -
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2.5 THz NbN Hot Electron mixer with integrated tapered Slot Antenna
Published in IEEE transactions on applied superconductivity (1997)Get full text
Conference Proceeding