IEEE Transactions on Microwave Theory and Techniques

Volume 34 Issue 1 • Jan 1986

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Displaying Results 1 - 25 of 40
  • [Front cover - Jan. 1986]

    Publication Year: 1986, Page(s):f1 - f2
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  • Patent abstracts

    Publication Year: 1986, Page(s):197 - 200
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  • IEEE copyright form

    Publication Year: 1986, Page(s): 201
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  • Membership application

    Publication Year: 1986, Page(s): 203
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  • [Advertisement]

    Publication Year: 1986, Page(s): 204
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  • [Back cover - Jan. 1986 [T-MTT]]

    Publication Year: 1986, Page(s):b1 - b2
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  • End Effect in Open-Circuited Two-Wire Transmission Lines (Short Paper)

    Publication Year: 1986, Page(s):180 - 182
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This paper gives the parameters of an equivalent circuit representing the end effect in an open-circuited two-wire transmission line. The complete equivalent circuit requires termination of the line in a parallel combination of capacitance and conductance, but it is shown that in all practical cases, capacitive effects dominate. View full abstract»

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  • A Method for the Calculation of Exact Capacitances of Circular Rod Arrays (Short Paper)

    Publication Year: 1986, Page(s):178 - 180
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    An exact solution of the capacitance matrix of circular rods located inside a grounded rectangle is presented. The capacitances were determined by solving the integral equation for the charge densities on the conductors using the Green function. The results are compared to E. G. Cristal's [1] data. Examples of the computing capacitance matrix for some unsymmetrical configurations are given. View full abstract»

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  • Response of Waveguides Terminated in a Tapered Metallic Wall (Short Paper)

    Publication Year: 1986, Page(s):175 - 178
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The characteristics of waveguides terminated in a tapered metallic wall are analyzed by means of the modal analysis and scattering matrix concept of discontinuities. Several applications of this kind of termination are suggested. The results can be very useful in evaluating the phase errors produced due to the use of a short-circuited waveguide with a metallic wall not placed in an exact transvers... View full abstract»

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  • Exposure of Man in the Near-Field of a Resonant Dipole: Comparison Between Theory and Measurements

    Publication Year: 1986, Page(s):26 - 31
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    The rate of the radio frequency energy deposition in a block model of the human body exposed in the near-field of a resonant dipole at 350 MHz was calculated using the moment method. Detailed maps of the electric field strength in a homogeneous model of a realistic shape under the same exposure conditions were obtained using a computer-controlled scanning system and an implantable electric field p... View full abstract»

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  • Slot-Coupled T-junction of TE11 Coaxial to TE10 Rectangular Waveguide

    Publication Year: 1986, Page(s):51 - 57
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A solution is presented to the problem of a slot-coupled T-junction of a TE11 -mode coaxial to a TE10 -mode rectangular waveguide. A variational technique is employed which combines the reaction concept with the field representation of a waveguide slot and leads to a closed-form solution for the junction scattering matrix. Numerical examples illustrate the characteristics of ... View full abstract»

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  • TM Modes In Oversized Planar Metallic Waveguides (Short Paper)

    Publication Year: 1986, Page(s):172 - 175
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The propagation properties of transverse magnetic (TM) and hybrid modes in plane and circular metallic waveguides are considered when their dimensions are great with regard to the wavelength. When the oversizing is not too great, the behavior is the same as those of conventional metallic waveguides. For high frequencies (greater oversizing), we describe an unexpected bebavior for these modes. The ... View full abstract»

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  • Exact Simulation and Sensitivity Analysis of Multiplexing Networks

    Publication Year: 1986, Page(s):93 - 102
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    This paper presents a novel approach to the simulation and sensitivity analysis of multiplexing networks. All computations are performed efficiently utilizing the concept of forward and reverse analysis which is elegant and effective in cascaded circuit analysis. Formulas are derived for such responses as input or output reflection coefficient, common port and channel output port return losses, in... View full abstract»

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  • Calculation of the Interaction Between the Fringing Capacitance of Symmetrical Stripline Using the Finite Element Method (Short Paper)

    Publication Year: 1986, Page(s):191 - 193
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    This paper calculates the interaction between the fringing capacitance of symmetrical stripline using the finite-element method. The fringing capacitance interaction is presented as a function of T/B and W/B. This enables the characteristic impedance of narrow, high-impedance lines to be accurately and simply calculated. View full abstract»

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  • A GaAs MESFET Oscillator Quasi-Linear Design Method

    Publication Year: 1986, Page(s):19 - 25
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    A simplified quasi-linear method is proposed to design a GaAs MESFET oscillator. By expressing the generated power Pgen as a function of FET gate and drain RF voltages, it is possible to maximize Pgen under the limiting conditions on intrinsic FET terminal voltage amplitudes. The feedback circuit elements to realize a GaAs MESFET oscillator are derived. An X-band GaAs MESFET ... View full abstract»

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  • Field Theory Design of Square Waveguide Iris Polarizers

    Publication Year: 1986, Page(s):156 - 160
    Cited by:  Papers (36)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Profiled depth corrugated square waveguide polarizers are designed with the method of field expansion into eigenmodes, which includes higher order mode interaction between the step discontinuities. Computer-optimized design data are giyen for a compact Ku-band prototype with an exponentially varying depth function that achieves 90° +- 1° differential phase shift shift within the separate... View full abstract»

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  • In Situ Permittivity of Canine Brain: Regional Variations and Postmortem Changes

    Publication Year: 1986, Page(s):38 - 50
    Cited by:  Papers (22)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1448 KB)

    A new probe-based measurements system was used to study dielectric properties of brain in situ, under conditions of induced physiological and pathological changes. Comparative measurements were made as function of time for 30 min prior to euthanasia and for 90-min post-mortem on the pia, the dura (both normal and anoxic), and in grey and white matter. All measurements were performed at 2450 MHz us... View full abstract»

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  • A GaAs MESFET Self-Bias Mode Oscillator (Short Paper)

    Publication Year: 1986, Page(s):167 - 172
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    A self-bias mode oscillation in a GaAs MESFET, with the gate terminal kept open in a dc manner, has been analyzed by a large-signal MESFET circuit model. The circuit simulation demonstrates that the gate-source Schottky barrier becomes self-biased along with the microwave oscillation build-up and that a stable self-bias gate voltage is observed with a steady-state oscillation. A self-bias mode osc... View full abstract»

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  • Design of Microwave GaAs MESFET's for Broad-Band, Low-Noise Amplifier (Comments)

    Publication Year: 1986, Page(s): 194
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    In the above widely-referenced paper, the empirical formulas for four noise parameters of microwave GaAs FET's are given. It was assumed that the four noise parameters could be expressed in terms of the equivalent circuit elements by simple formulas (2)-(5) of the subject paper. Four fitting factors in these formulas were determined from the measured values of the noise parameters and the equivale... View full abstract»

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  • Formulation of the Singular Integral Equation Technique for Planar Transmission Lines (Correction)

    Publication Year: 1986, Page(s): 196
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (49 KB)

    In the above paper, it has been wrongly concluded that (17) and (18), which represent the energy coupling between a pair of complex modes, mean that each mode cannot exist alone. View full abstract»

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  • Calculating the Characteristic Impedance of Finlines by Transverse Resonance Method

    Publication Year: 1986, Page(s):85 - 92
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    The characteristic impedance of finlines with up to three slots is calculated by a rigorous hybrid-mode analysis which includes the finite metallization thickness and finite depth of the mounting grooves. The transverse resonance principle utilized reduces considerably the order of the involved matrix eigenvalue problem. The propagation constants for the fundamental HE1 mode (and EH View full abstract»

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  • Analysis of Unsymmetrical Broadside-Coupled Striplines with Anisotropic Substrates (Short Paper)

    Publication Year: 1986, Page(s):188 - 191
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A variational method of the analysis is described for the broadside-coupled striplines of unequal width. A compliance matrix is introduced for the unsymmetrical structure, and variational expressions are derived for the matrix elements for the first time. This method is applicable to the case with uniaxially anisotropic media, and it gives the transformation from the anisotropic to the equivalent ... View full abstract»

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  • Excitation and Scattering of Guided Modes on a Helically Corrugated Dielectric Cylinder

    Publication Year: 1986, Page(s):8 - 18
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    The excitation and scattering of guided modes on a dielectric cylinder with a helical corrugation are investigated. A finite number of radiatiorr modes and an infinite number of surface modes are considered, with the consequence that both the amplitude and phase of the interacting modes can be evaluated. The effect of the pitch angle on the coupling and conversion between the guided modes and the ... View full abstract»

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  • Study of a Noise Amplification Mechanism in Gryrotrons

    Publication Year: 1986, Page(s):72 - 79
    Cited by:  Papers (37)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (800 KB)

    The electrostatic cyclotron instability driven by a relativistic mechanism is analyzed with a small-signal theory and is shown to be a significant noise amplification mechanism in gyrotrons. The mode is localized in the electrotron beam, with a growth rate strongly dependent on the wavelength and electron density but insensitive to the velocity spread. View full abstract»

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  • Nonuniform Layer Model of a Millimeter-Wave Phase Shifter

    Publication Year: 1986, Page(s):147 - 155
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    The electromagnetic wave propagation of millimeter waves in dielectric waveguides with thin surface plasma layers is characterized. The phase and attenuation of a 94-GHz wave are computed for various surface plasma layer thicknesses as a function of earner density levels. The electron/hole pairs generated in the vicinity of the dielectric waveguide surface by photo excitation are assumed to have a... 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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Editor-in-Chief
Jose Carlos Pedro
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