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IEEE Transactions on Microwave Theory and Techniques

Issue 5 • Date May 1984

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Displaying Results 1 - 19 of 19
  • [Front cover - May 1984 [T-MTT]]

    Publication Year: 1984, Page(s):f1 - f2
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    Freely Available from IEEE
  • Patent abstracts

    Publication Year: 1984, Page(s):563 - 567
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    These patent abstracts of recently issued patents of interest to microwave engineers are intended to provide the minimum information necessary for readers to detennine if they are interested in examining the patent in more detail. Complete copies of patents are available for a small fee by writing: U.S. Patent and Trademark Office, Box 9, Washington, DC, USA. View full abstract»

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  • Membership Application, IEEE Microwave Theory and Techniques Group

    Publication Year: 1984, Page(s): 568
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    Freely Available from IEEE
  • [Back cover - May 1984 [T-MTT]]

    Publication Year: 1984, Page(s):b1 - b2
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    Freely Available from IEEE
  • GaAs Monolithic Low-Power Amplifiers with RC Parallel Feedback (Short Paper)

    Publication Year: 1984, Page(s):542 - 544
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    GaAs monolithic broad-band low-power-dissipated amplifiers with inductive/resistive load and RC parallel feedback circuits have been developed. An inductive load amplifier provides a gain of 8 dB, a 3-dB bandwidth of 2.5 GHz, and a noise figure of 2.7 dB at 1 GHz with less than + 1-V supply voltage and very low-power dissipation of 20 mW. A resistive load two-stage amplifier provides a gain of 15 ... View full abstract»

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  • Transient Analysis of a Stripline Having a Corner in Three-Dimensional Space

    Publication Year: 1984, Page(s):491 - 498
    Cited by:  Papers (59)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    The transient analysis of electromagnetic fields has shown its utility not only in clarifying the variation of the fields in time but also in gaining information on mechanisms by which the distributions of an electromagnetic field at the stationary state are bronght about. We have recently proposed a new numerical method for the transient analysis in three-dimensioual space by formulating the equi... View full abstract»

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  • Imaging Polarimeter Arrays for Near-Millimeter Waves

    Publication Year: 1984, Page(s):507 - 512
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    An integrated-circuit antenna array has been developed that images both polarization and intensity. The array consists of a row of antennas that lean alternately left and right, creating two interlaced sub-arrays that respond to different polarizations. The arrays and the bismuth bolometer detectors are made by a photoresist shadowing technique that requires only one photolithographic mask. The ar... View full abstract»

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  • Computer Analysis of Dielectric Waveguides: A Finite-Difference Method

    Publication Year: 1984, Page(s):531 - 541
    Cited by:  Papers (70)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    A method for computing the modes of dielectric guiding structures based on finite differences is described. The numerical computation program is efficient and can be applied to a wide range of problems. We report here solutions for circular and rectangular dielectric waveguides and compare our solutions with those obtained by other methods. Limitations in the commonly used approximate formulas dev... View full abstract»

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  • Radiometric Technique for Measuring Changes in Lung Water (Short Papers)

    Publication Year: 1984, Page(s):554 - 556
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    In this paper, we describe a new approach to continuous, noninvasive monitoring of changes in lung-water content based on radiometry. It is shown theoretically, as based on a planar model of the lung, that a one-percent change in lung-water content corresponds to a 0.260-K change in brightness temperature, which is within the detection sensitively of available radiometers. Practicably, taking into... View full abstract»

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  • Tolerance Analysis of Shielded Microstrip Lines (Short Paper)

    Publication Year: 1984, Page(s):544 - 547
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    A complete analysis of the sensitivities of shielded microstrips is presented. The sensitivity formulas form the basis for studying the effect of tolerances on the performance of these circuits. A set of sensitivity curves are given to help the design procedure. It is suggested that the position of the top cover can be adjusted to compensate for some of the effects of the manufacturing tolerances.... View full abstract»

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  • Multimode Oscillation and Mode Competition in High-Frequency Gyrotrons

    Publication Year: 1984, Page(s):481 - 490
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    Stable operation in a single mode is an important goal of high-power gyrotrons. Both multimoding and switching into unwanted modes can lead to lower efficiency and undesirable heating of components not designed to accommodate parasitic modes. We have extensively studied mode behavior in a pulsed 100-kW, 140-GHz gyrotron using a variety of mixing techniques. As a result, a number of multimoding reg... View full abstract»

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  • A Broad-Band, Ultra-Low-Noise Schottky Diode Receiver from 80 to 115 GHz Diode

    Publication Year: 1984, Page(s):498 - 507
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1288 KB)

    A cryogenic 3-mm receiver has been developed which fully utilizes the low-noise potential of Schottky diodes by approaching the shot-noise limit within 10 percent. With a broad-band mixer design which properly terminates the input sidebands and reactively terminates the second harmonic of the local oscillator and its sidebands, the double sideband (DSB) mixer noise temperature is 35 K in the best ... View full abstract»

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  • Wave Propagation and Attenuation in the General Class of Circular Hollow Waveguides with Uniform Curvature

    Publication Year: 1984, Page(s):513 - 521
    Cited by:  Papers (36)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A general method has been developed to evaluate the propagation constant in oversized circular hollow-core waveguides characterized by a surface impedance and admittance due to a uniform bend. Completely different formulas are obtained for the attenuation constants of the modes in metallic or dielectric hollow waveguides from those obtained by Marcatili and Schmeltzer. Electric-field lines are als... View full abstract»

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  • An Empirical Design Technique for Microwave Oscillators (Short Papers)

    Publication Year: 1984, Page(s):556 - 559
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A large-signal design technique for series-type microwave oscillators using three-terminal active devices is described. Using this technique, the characteristics of the embedding circuits required for maximum output power are measured directly under actual oscillation conditions. A two-signal technique is used in the measurement to establish the required oscillation conditions and to prevent oscil... View full abstract»

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  • Heating Pattern in a Multi-Layered Material Exposed to Microwaves (Short Papers)

    Publication Year: 1984, Page(s):547 - 552
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    The electromagnetic-induced heating pattern in a multiIayered slab material exposed to uniform plane microwaves is studied. A general expression taking into account the multiple reflections at the interfaces is derived for the power dissipated per unit volume in the medium. A numerical method is developed for solving the heat transport equation describing the temperature distribution in this mater... View full abstract»

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  • The Propagation Characteristics of Signal Lines in a Mesh-Plane Environment

    Publication Year: 1984, Page(s):522 - 531
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    This paper investigates the propagation characteristics of signal lines situated between a pair of mesh reference planes in a homogeneous dielectric. These mesh reference planes, which form the heart of high-performance multichip modules, provide a transmission-line environment for the signals carried between integrated circuit chips. A numerical solution that employs a set of rooftop functions to... View full abstract»

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  • The Measurement of Noise in Microwave Transmitters (Comments)

    Publication Year: 1984, Page(s):559 - 561
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The recent comment by Ashley et al. as a reply to the remarks by Knöchel et al. drew my attention to the, work by Ashley Barley, and Rast, Jr., to which I would like to add three supplements. On an improved version of the frequency discriminator of Ondria and Ashley et al., the following results have been published. View full abstract»

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  • On Temperature Characteristics for a GaAs Monolithic Broad-Band Amplifier Having Resistive Loads (Short Papers)

    Publication Year: 1984, Page(s):552 - 553
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Temperature characteristics for a GaAs monolithic broad-band amplifier having resistive loads were investigated. It was demonstrated that gain versus temperature characteristics for the amplifier are self-compensated and that the bandwidth for the amplifier becomes narrow when ambient temperature increases. View full abstract»

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  • The Design Parameters of Nonsymmetrical Coupled Microstrips (Comments)

    Publication Year: 1984, Page(s):561 - 563
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    A recent paper dealt with the subject of the design parameters of nonsymmetrical coupled microstrips for applications as microwave circuit elements. In this brief correspondence, the completeness and consistency of some of the results presented in the paper are examined and the existence of an earlier relatively comprehensive work reported on the same subject is pointed out. View full abstract»

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Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

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