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There are a total of 15 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Millimeter-band oscillations based on resonant tunneling in a double-barrier diode at room temperature
Author(s): Brown, E. R.; Sollner, T. C. L. G.; Goodhue, W. D.; Parker, C. D.
Abstract: A double-barrier diode at room temperature has yielded oscillations with fundamental frequencies up to 56 GHz and second harmonics up to 87 GHz. The output powers at these frequencies were about 60 and 18 microW, ...
NASA Center: NASA (non Center Specific)
Publication Year: 1987
Added to NTRS: 2004-11-03
Accession Number: 87A29144; Document ID: 19870041870; Report Number: AD-A179034, ESD-TR-86-199
Resonant-tunnelling diode oscillator using a slot-coupled quasioptical open resonator
Author(s): Stephan, K. D.; Brown, E. R.; Parker, C. D.; Goodhue, W. D.; Chen, C. L., et al.
Abstract: A resonant-tunneling diode has oscillated at X-band frequencies in a microwave circuit consisting of a slot antenna coupled to a semiconfocal open resonator. Coupling between the open resonator and the slot oscillator ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 91A35960; Document ID: 19910051337
Submillimeter wave absorption of n-type InSb at low temperatures
Author(s): Brown, E. R.
Abstract: The absorption coefficient of two high-purity n-InSb samples is measured in the 10-40 per cm range using Fourier transform spectroscopy. The absorption coefficient spectrum is presented for both samples at 4.2 K. It is also ...
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85A29161; Document ID: 19850047010
Resonant tunneling through mixed quasibound states in a triple-well structure
Author(s): Brown, E. R.; Parker, C. D.; Calawa, A. R.; Manfra, M. J.
Abstract: A triple-well resonant-tunneling structure made from the In(0.53)Ga(0.47)As/AlAs material system yields a broad negative differential resistance (NDR) region without the precipitous drop in current that occurs in single-well ...
NASA Center: NASA (non Center Specific)
Publication Year: 1993
Added to NTRS: 2004-11-03
Accession Number: 93A44827; Document ID: 19930060830
Resonant tunnelling diode oscillator as an alternative LO for SIS receiver applications
Author(s): Blundell, R.; Papa, D. C.; Brown, E. R.; Parker, C. D.
Abstract: The resonant tunnelling diode (RTD) oscillator has been demonstrated for the first time as a local oscillator (LO) in a heterodyne receiver. Noise measurements made on a sensitive 200 GHz ...
NASA Center: NASA (non Center Specific)
Publication Year: 1993
Added to NTRS: 2004-11-03
Accession Number: 93A37415; Document ID: 19930053418
A quasioptical resonant-tunneling-diode oscillator operating above 200 GHz
Author(s): Brown, E. R.; Parker, C. D.; Molvar, K. M.; Calawa, A. R.; Manfra, M. J.
Abstract: We have fabricated and characterized a quasioptically stabilized resonant-tunneling-diode (RTD) oscillator having attractive performance characteristics for application as a radiometric local oscillator. The fundamental ...
NASA Center: NASA (non Center Specific)
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 93N27764; Document ID: 19930018575
5 mW parallel-connected resonant-tunnelling diode oscillator
Author(s): Stephan, K. D.; Wong, S.-C.; Brown, E. R.; Molvar, K. M.; Calawa, A. R.; Manfra, M. J.
Abstract: A new type of resonant-tunneling diode (RTD) oscillator that generates 5 mW at 1.18 GHz is reported. This result was obtained by connecting in parallel 25 individual diodes designed for such a connection. This experiment ...
NASA Center: NASA (non Center Specific)
Publication Year: 1992
Added to NTRS: 2004-11-03
Accession Number: 92A50984; Document ID: 19920068360
High-frequency resonant-tunneling oscillators
Author(s): Brown, E. R.; Parker, C. D.; Calawa, A. R.; Manfra, M. J.; Chen, C. L., et al.
Abstract: Advances in high-frequency resonant-tunneling-diode (RTD) oscillators are described. Oscillations up to a frequency of 420 GHz have been achieved in the GaAs/AlAs system. Recent results obtained with In0.53Ga0.47As/AlAs and ...
NASA Center: NASA (non Center Specific)
Publication Year: 1991
Added to NTRS: 2004-11-03
Accession Number: 91A26007; Document ID: 19910041384
A heterodyne receiver for the submillimeter wavelength region based on cyclotron resonance in InSb at low temperatures
Author(s): Brown, E. R.; Keene, J.; Phillips, T. G.
Abstract: A heterodyne receiver has been developed for observation of interstellar atomic and molecular lines in the submillimeter wavelength region. The main detection mechanism of the device is cyclotron resonance in bulk n-InSb due ...
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 86A18562; Document ID: 19860033824
Ultra-low-noise, high-impedance preamp for cryogenic detectors
Author(s): Brown, E. R.
Abstract: A relatively simple room-temperature preamp design that satisfies both the low-noise and wideband requirements for the InSb Putley-mode detector and which is based on a common-drain JFET input, is presented. The design has ...
NASA Center: NASA (non Center Specific)
Publication Year: 1985
Added to NTRS: 2004-11-03
Accession Number: 85A36740; Document ID: 19850054589
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