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Proceedings of the IEEE

Issue 11 • Nov 1992

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Displaying Results 1 - 13 of 13
  • Frequency multipliers for millimeter and submillimeter wavelengths

    Publication Year: 1992, Page(s):1842 - 1852
    Cited by:  Papers (73)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (796 KB)

    Theory and tools for analysis and design of millimeter- and submillimeter-wave multipliers are discussed. Experimental work is reviewed. The Schottky diode model at submillimeter frequencies, use of Schottky multiplier chains versus direct higher-order multipliers, and the effect of cooling on Schottky diode multipliers are discussed. Alternative diodes such as the high electron mobility varactor ... View full abstract»

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  • GaAs Schottky diodes for THz mixing applications

    Publication Year: 1992, Page(s):1827 - 1841
    Cited by:  Papers (61)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1192 KB)

    The operation of GaAs Schottky barrier diodes, the critical mixer element used in heterodyne receivers for a variety of scientific applications in the terahertz frequency range, is reviewed. The constraints that the receiver system places on the diodes are considered, and the fundamental guidelines for device optimization are presented. The status of ongoing research, both experimental and theoret... View full abstract»

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  • Submillimeter-wave detection with superconducting tunnel diodes

    Publication Year: 1992, Page(s):1810 - 1826
    Cited by:  Papers (39)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1280 KB)

    The review presents a theoretical framework for understanding submillimeter detection using an optical photodiode theory. Both gain and noise in the superconductor-insulator-superconductor (SIS) mixer are described in terms of mixing on a photodiode. The role of impedance matching in the proper design of an SIS mixer is described. A variety of methods for achieving good impedance match at submilli... View full abstract»

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  • Transistor oscillator and amplifier grids

    Publication Year: 1992, Page(s):1800 - 1809
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Although quasi-optical techniques are applicable to a large variety of solid-state devices, special attention is given to transistors, which are attractive because they can be used as either amplifiers or oscillators. Experimental results for MESFET bar-grid and planar grid oscillators are presented. A MESFET grid amplifier that receives only vertically polarized waves at the input and radiates ho... View full abstract»

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  • Optically pumped submillimeter laser heterodyne receivers: astrophysical observations and recent technical developments

    Publication Year: 1992, Page(s):1788 - 1799
    Cited by:  Papers (7)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (804 KB)

    The use of optically pumped submillimeter lasers as a local oscillator source is discussed. The principle of operation of submillimeter lasers in heterodyne systems is examined, and a detailed description of an airborne laser receiver system is given as an example. Some ground-based and airborne laser heterodyne astrophysical observations are then reviewed. Advances in submillimeter technology, es... View full abstract»

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  • Novel transmission lines for the submillimeter-wave region

    Publication Year: 1992, Page(s):1771 - 1787
    Cited by:  Papers (35)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1332 KB)

    A detailed presentation of the available information on the electrical properties of submillimeter-wave transmission lines is given. These lines are compared with conventional planar and nonplanar lines, such as microstrip and rectangular waveguide, in terms of performance, fabrication feasibility, and availability. Four types of novel monolithic waveguides that have shown promise for use in the s... View full abstract»

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  • Millimeter-wave and terahertz integrated circuit antennas

    Publication Year: 1992, Page(s):1748 - 1770
    Cited by:  Papers (214)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1684 KB)

    A comprehensive review of integrated circuit antennas suitable for millimeter and terahertz applications is presented. A great deal of research was done on integrated circuit antennas in the last decade, and many of the problems associated with electrically thick dielectric substrates, such as substrate modes and poor radiation patterns, have been understood and solved. Several antennas, such as t... View full abstract»

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  • Quasi-optical techniques

    Publication Year: 1992, Page(s):1729 - 1747
    Cited by:  Papers (74)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1580 KB)

    The basic theory of quasi-optical Gaussian beam propagation and beam transformation by simple optical elements is summarized, and coupling to and between Gaussian beams is briefly discussed. Guidelines for Gaussian optics system design are reviewed, the most important being beam truncation and matching. Passive components in the terahertz frequency range based on quasi-optical propagation, includi... View full abstract»

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  • Novel heterojunction varactors

    Publication Year: 1992, Page(s):1853 - 1860
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Several varactor structures that have been proposed for millimeter- and submillimeter-wave receiver systems are described, and their performance in a harmonic multiplier is compared. The performance is calculated using a nonlinear large-signal analysis program View full abstract»

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  • Submillimeter astronomy [heterodyne spectroscopy]

    Publication Year: 1992, Page(s):1662 - 1678
    Cited by:  Papers (82)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    Some of the aspects of submillimeter-wave astronomy which are relevant to the field of heterodyne spectroscopy are reviewed. Most of the discussion concerns the dense interstellar medium where stars are forming, with some work presented on nearby galaxies. Extremely sensitive receivers, large accurate telescopes, and high-mountain, airborne, or space platforms are gradually being developed, so tha... View full abstract»

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  • Submillimeter-wavelength heterodyne spectroscopy and remote sensing of the upper atmosphere

    Publication Year: 1992, Page(s):1679 - 1701
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    The use of remote sensing based on heterodyne spectroscopy at submillimeter wavelengths to monitor changes and study processes in the Earth's upper atmosphere is discussed. An experiment for this purpose, performing measurements in spectral bands near 63, 183, and 205 GHz and now operational on the NASA Upper Atmosphere Research Satellite (UARS), is described. An experiment which includes measurem... View full abstract»

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  • Submillimeter receivers for radio astronomy

    Publication Year: 1992, Page(s):1702 - 1720
    Cited by:  Papers (79)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1600 KB)

    The state of development of receivers for submillimeter-wave radio astronomy is reviewed. Bolometers for continuum observation, hot-electron mixer receivers for narrowband spectral line observation, and heterodyne receivers, both Schottky diode and superconducting tunnel junction, are presented. At the lower frequency end of the submillimeter band, standard waveguide techniques, scaled from millim... View full abstract»

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  • Low-noise submillimeter receivers using single-diode harmonic mixers

    Publication Year: 1992, Page(s):1721 - 1728
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    Submillimeter Schottky diode mixers operating on the second LO harmonic have been built, achieving noise temperatures only 1.3-1.5 times higher than those of fundamental mixers at the same frequency. These mixers use only a single diode junction for ease of fabrication, and allow construction of a complete receiver of greatly reduced complexity relative to those using fundamental mixers. Several s... View full abstract»

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North Carolina State University