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IEEE Transactions on Microwave Theory and Techniques

Issue 3 • Mar. 1972

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Displaying Results 1 - 13 of 13
  • [Front cover - March 1972]

    Publication Year: 1972, Page(s):f1 - f2
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    Freely Available from IEEE
  • Editorial - MTT Editorial Policy Statement

    Publication Year: 1972, Page(s): 201
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  • Contributors, Mar. 1972

    Publication Year: 1972, Page(s):240 - 241
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  • Foreign abstracts

    Publication Year: 1972, Page(s):241 - 244
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  • [Back cover]

    Publication Year: 1972, Page(s):b1 - b2
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  • An Ordered Array of Terminated Metallic Posts as an Embedding Network for Lumped Microwave Devices

    Publication Year: 1972, Page(s):215 - 223
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (888 KB)

    An ordered array of metallic posts is proposed as an embedding network for lumped devices at microwave frequencies. The individual metallic posts, terminated in a lumped device, extend across a parallel-plane transmission line excited by the TEM mode. In the analysis the impedance discontinuity for an individual terminated metallic post in a transmission line bounded on two sides by electric walls... View full abstract»

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  • Modes of Propagation in a Coaxial Waveguide with Lossless Reactive Guiding Surfaces

    Publication Year: 1972, Page(s):210 - 214
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    An analysis of the modes that can propagate in a coaxial waveguide with Iossless reactive guiding surfaces is presented. The cases where both the surfaces are either inductive or capacitive and the case where one of the surfaces is capacitive and the other is inductive are discussed. The results show that, in general, there are two surface waves and an infinite number of waveguide modes. Whereas a... View full abstract»

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  • Iterated Solid-State Microwave Power Amplifier

    Publication Year: 1972, Page(s):202 - 209
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    A theoretical analysis is presented of a solid-state power amplifier consisting of a unidirectional transmission line loaded by a series of negative-resistance diodes. Numerical calculations of the large-signal amplifier characteristics are carried out assuming a cubic nonlinear relationship between the diode current and the RF voltage. Diode parameters used in these calculations are chosen to app... View full abstract»

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  • Hybrid-Frequency Cutoffs in Gyrotropic Waveguides (Short Papers)

    Publication Year: 1972, Page(s):237 - 238
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The behavior of the Brillouin diagram ω versus βz is analyzed for axially magnetized gyrotropic waveguides in the vicinity of the hybrid frequencies ωk and ωi. Starting from the exact dispersion relation for the modes in the waveguides under consideration it is shown that 1) the dispersion curves terminate at discrete cutoff points located al... View full abstract»

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  • Synthesis of Mixed Lumped and Distributed Impedance-Transforming Filters

    Publication Year: 1972, Page(s):223 - 233
    Cited by:  Papers (30)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB)

    The design of a class of impedance-transforming filters in the form of very compact and convenient mixed lumped and distributed ladder networks is presented. The synthesis utilizes the distributed prototype technique introduced in a previous paper, but here a new approximation function appropriate to the impedance transformer problem is derived. In addition to combining the properties of an impeda... View full abstract»

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  • Tunable Frequency Range and Mismatch Adjustment for Comb-Line Bandpass Filters (Short Papers)

    Publication Year: 1972, Page(s):238 - 239
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    S-band comb-line filters can be tuned over a frequency range of approximately 200 percent of the design frequency. A simple technique is also described that compensates for impedance match and coupling deficiencies associated with the filter. View full abstract»

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  • Measurement of Dielectric Materials Using a Cutoff Circuiar-Waveguide Cavity (Short Papers)

    Publication Year: 1972, Page(s):233 - 235
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    A technique is presented for accurately determinhg the dielectric constant of microwave materials. The concept is to resonate a cutoff circular-waveguide cavity by inserting the dielectric-disk sample. Unlike most dielectric measurement techniques which rely on perturbation methods, this one determines the dielectric constant from the absolute measurement of the resonant frequency. Also, the use o... View full abstract»

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  • A Study of Microwave Leakage through Perforated Flat Plates (Short Papers)

    Publication Year: 1972, Page(s):235 - 236
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A simple formula useful for predicting leakage through a circular hole array in a metallic flat plate is presented. A correction is given for plate thickness. The formula is applicable to arrays having either a 60° (staggered) or 90° (square) hole pattern, but is restricted to the case of 1) an obliquely incident plane wave with the E field polarized normal to the plane of incidence, and 2... 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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Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt