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IEEE Transactions on Microwave Theory and Techniques

Issue 1 • Date Jan. 1985

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Displaying Results 1 - 25 of 26
  • [Front cover - Jan. 1985]

    Publication Year: 1985, Page(s):f1 - f2
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  • Editorial

    Publication Year: 1985, Page(s): 1
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  • Patent Abstracts (Jan. 1985 [T-MTT])

    Publication Year: 1985, Page(s):76 - 79
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  • IEEE Microfilm (Jan. 1985 [T-MTT])

    Publication Year: 1985, Page(s): 80
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  • IEEE copyright form

    Publication Year: 1985, Page(s):81 - 82
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  • Membership application

    Publication Year: 1985, Page(s): 83
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  • Table of contents - Preview of February (1985 [T-MTT])

    Publication Year: 1985, Page(s): 84
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  • Technical Committees (Jan. 1985 [T-MTT])

    Publication Year: 1985, Page(s):b1 - b2
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  • New Analysis of Semiconductor Isolators: The Modified Spectral Domain Analysis (Short Papers)

    Publication Year: 1985, Page(s):59 - 64
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    This paper addresses semiconductor isolators of the field displacement effect type. The semiconductor is modelized by its surface impedance tensor. This description allows an extension of the well-known spectral domain method to the analysis of the semiconductor isolators. Different configurations are studied and numerical results are given. The finline isolator with InSb is shown to be the best c... View full abstract»

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  • Hybrid-Mode Analysis of Coupled Microstrip-Slot Resonators

    Publication Year: 1985, Page(s):38 - 43
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    An advanced microwave and millimeter-wave integrated circuit element, that is, a coupled microstrip resonator with a tuning slot, or a coupled microstrip-slot resonator, has been developed. As speciaf cases, a microstrip-slot resonator, coupled microstrip resonator, and microstrip resonator have been investigated. A hybrid-mode analysis is presented for obtaining resonant frequencies. It is based ... View full abstract»

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  • Biological Tissues Characterization at Microwave Frequencies

    Publication Year: 1985, Page(s):64 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The present work is concerned with the measurement of dielectric permittivity and conductivity of various high loss tissues from freshly sacrificed animals. The measurement makes use of the 'infinite sample' technique which involves mounting of the sample in a rectangular waveguide system excited in the TE10 mode at 9.4 GHz. A more complex system consisting of skin-fat-muscle combinatio... View full abstract»

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  • Radial-Line/Coaxial-Line Stepped Junction (Short Papers)

    Publication Year: 1985, Page(s):56 - 59
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    A radial-line/coaxial-line junction having a step in the inner conductor in the coaxial aperture is considered. It is shown that the stepped junction may be modeled by an equivalent circuit obtained by a simple modification of that for the unstepped junction. Comparison of theoretical and experimental results has established this representation to be very accurate over a wide frequency range. View full abstract»

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  • An Explicit Six-Port Calibration Method Using Five Standards (Short Papers)

    Publication Year: 1985, Page(s):69 - 72
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A six-port reflectometer calibration method using five standards is developed, and gives explicit unambiguous expressions for the calibration constants. The standards are restricted only in that their impedances may neither all have the same magnitude nor all have the same argument. The method permits exact (nonidealized) descriptions of the standards to be used, and the redundancy inherent in the... View full abstract»

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  • Coupling of Degenerate Modes on Curved Dielectric Slab Sections and Application to Directional Couplers (Corrections)

    Publication Year: 1985, Page(s): 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (45 KB)

    In the above paper the following corrections should be made. View full abstract»

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  • Noise Due to Pulse-to-Pulse Incoherence in Injection-Locked Pulsed-Microwave Oscillators. Part II-Effects of Phase-Locking Dynamics

    Publication Year: 1985, Page(s):20 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The problem of noise due to partial pulse-to-pulse coherence in phase-locked pulsed oscillators is investigated. In particular, the analysis includes the dynamic time variation of the phase-locking process. The signal-to-noise ratio of such a system is found to increase as (gamma tau)2, where gamma is the frequency locking bandwidth and tau is the pulse length. This result corrects a pr... View full abstract»

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  • Theory and Application of Coupling Between Curved Transmission Lines (Correction)

    Publication Year: 1985, Page(s):74 - 75
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    In the above paper, the following corrections should be made. View full abstract»

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  • Accurate Analysis Equations and Synthesis Technique for Unilateral Finlines

    Publication Year: 1985, Page(s):24 - 30
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    Accurate analysis equations and synthesis techniques are presented for unilateral finlines, valid over a wide range of structural parameters and substrate dielectic constants (1≤epsilonr≤3.75). These expressions are usable for computing the cutoff wavelength to within +-0.6 percent, the guided wavelength to within +-2 percent, and the characteristic impedance (based on the power-v... View full abstract»

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  • 140-GHz Finline Components (Short Papers)

    Publication Year: 1985, Page(s):53 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A balanced mixer and a p-i-n diode switch based on finline technique for the frequency range around 140 GHz are described. The mixer exhibits a conversion loss of 7 to 8 dB, whereas the p-i-n diode switch shows an insertion loss of 2 dB and a maximum attenuation of 33 dB. View full abstract»

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  • Higher Order Mode Cutoff in Polygonal Transmission Lines (Short Papers)

    Publication Year: 1985, Page(s):67 - 69
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper provides an analytical solution to the problem of determining the cutoff wavelength of the first higher order mode in any transmission line having as its conductors a pair of coaxial, similar, similarly oriented regular polygons. The method is based on the cross-sectional resonance technique. It is shown that, under certain circumstances, the requirement that the polygons be coaxial can... View full abstract»

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  • A Continuous Comparison at 97 GHz Radiometer

    Publication Year: 1985, Page(s):44 - 51
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1232 KB)

    A continuous comparison radiometer has been implemented at 97 GHz using quasi-optical techniques for local oscillator (LO) injection and realization of a 90° hybrid. Cryogenically cooled Schottky-diode mixers and FET amplifiers give a double-sideband (DSB) system temperature of 250 K. The system is self-calibrating and optimized under computer control. The root-mean-square (rms) fluctuations ... View full abstract»

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  • Complex Propagation Constants of Bent Hollow Waveguides with Arbitrary Cross Section

    Publication Year: 1985, Page(s):15 - 19
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    An integral representation of the complex propagation constant has been derived from Maxwell's equations for cylindrical, hollow, bent, oversized waveguides with uniform curvature and with arbitrary cross sections. The method makes the calculations much simpler than the conventional method, i.e., the characteristic-equation method, although it has not yet been tried for three-dimensional bent wave... View full abstract»

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  • Theory and Measurement of Back Bias Voltage in IMPATT Diodes (Comments)

    Publication Year: 1985, Page(s):72 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    In the above paper; back bias voltage in IMPATT diodes has been discussed in detail; however, some previous work on this problem has gone unnoticed. Bracket first pointed out that RF-induced negative resistance was responsible for low-frequency instability which was ten times or so higher in GaAs as compared to Si diodes. Using sinusoidal RF voltage, he considered rectification in the avalanche re... View full abstract»

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  • Active Stabilization of Crystal Oscillator FM Noise at UHF Using a Dielectric Resonator (Short Papers)

    Publication Year: 1985, Page(s):51 - 53
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A low-noise 600-MHz crystal oscillator circuit is described. It uses a dielectric oscillator as the dispersive element of a discriminator in an active frequency stabilization loop which reduces the near-carrier FM noise. The innovation in the circuit is an essentially noiseless active carrier suppression loop, which allows maximum utilization of a low-noise RF amplifier to reduce the discriminator... View full abstract»

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  • General Stability Analysis of Periodic Steady-State Regimes in Nonlinear Microwave Circuits

    Publication Year: 1985, Page(s):30 - 37
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    The problem of analyzing the stability of periodic equilibrium regimes in nonlinear microwave circuits is tackled by a general-purpose computer-aided approach. By means of a perturbation technique, the search for instabilities is reduced to a generalized eigenvalue equation expressed in matrix form, and is then carried out by Nyquist's analysis. The use of a vector processor allows the computer ti... View full abstract»

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  • Lossy Inductive-Post Obstacles in Lossy Waveguide

    Publication Year: 1985, Page(s):9 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Post and wall losses are treated for inductive obstacles in rectangular waveguide. Post losses are treated rigorously by moment methods and wall losses are obtained by perturbational methods. Losses may be taken into account by a modified equivalent circuit and a Iossy transmission line. Post losses may be comparable to wall losses. 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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Dominique Schreurs
Dominique.Schreurs@ieee.org

Editor-in-Chief
Jenshan Lin
jenshan@ieee.org