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IEEE Transactions on Microwave Theory and Techniques

Issue 5 • May 1970

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Displaying Results 1 - 17 of 17
  • [Front cover - May 1970]

    Publication Year: 1970, Page(s):f1 - f2
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    Freely Available from IEEE
  • Table of contents - May, 1970

    Publication Year: 1970, Page(s): 237
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  • Contributors, May 1970

    Publication Year: 1970, Page(s):286 - 287
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  • Information on computer program descriptions

    Publication Year: 1970, Page(s): 288
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1970, Page(s):b1 - b2
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  • Spectrum Analysis of Nanosecond Pulses (Correspondence)

    Publication Year: 1970, Page(s):280 - 282
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A novel method for spectral analysis of nanosecond pulse-modulated microwave signals is presented. The technique is based on the dispersion of waveguide. It is applied to a case of microwave emission from InSb. The calibration procedure makes use of the modulating capability of the semiconductor samples themselves. View full abstract»

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  • Microwave Filters of Coupled Lines and Lumped Capacitances (Correspondence)

    Publication Year: 1970, Page(s):278 - 280
    Cited by:  Papers (10)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Two frequency transformations are given which enable microwave filters to be realized with coupled lines and lumped capacitances from a characteristic prototype lumped network to a good approximation. The procedore includes filters originally proposed by Matthaei and CristaI, and enables realizations for large bandwidths. A number of examples demonstrate the efficiency of the procedures. View full abstract»

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  • Strip Line with Rectangular Outer Conductor and Three Dielectric Layers

    Publication Year: 1970, Page(s):238 - 244
    Cited by:  Papers (60)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A general method is proposed for analyzing the transmission line characteristics of strip lines with rectangular outer conductor and multidielectric layers within a TEM wave approximation. This method uses Green's function for formulating the problem and a variational principle for obtaining practical solutions. The case of the microstrip line is first discussed, and numerical results are found to... View full abstract»

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  • Input Impedance Analysis of 1:1 Balun

    Publication Year: 1970, Page(s):264 - 269
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The 1:1 balun constructed of a bifilar delay line and an inverse 1:1 transformer is analyzed for its input characteristics. As a main result of the analyses, the following results were obtained about the balun in this paper. 1) Resonance occurs when the line length is equal to n (any positive integer) times half of a wavelength of the unbalanced transmission mode. 2) The lower cutoff frequency is ... View full abstract»

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  • Further Considerations on Open Resonators with Rimmed Mirrors (Correspondence)

    Publication Year: 1970, Page(s):282 - 283
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Further results are presented obtained with experimental tests on an X-band model of Fabry resonator having mirrors with step or sloped rims. A periodical trend of the power losses per transit as a function of the step rim thickness for both positive and negative values of the thickness is noted. This behavior is observed also in the mode pattern configuration. An oscillating trend of the power lo... View full abstract»

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  • Equivalent Network of a Multimode Planar Grating

    Publication Year: 1970, Page(s):244 - 252
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (864 KB)

    In this paper a plane-parallel, perfectly conducting, zero-thickness grating is analyzed by an integral equation procedure. This procedure generalizes the well-known single-mode method by taking multimode propagation into account. The grating is located in free space; viewed transversely to the plane of the structure, it is a zero-thickness shunt discontinuity in the free-space waveguide. The solu... View full abstract»

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  • Input Manifolds for Microwave Channelizing Filters

    Publication Year: 1970, Page(s):270 - 276
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    The following sections describe two techniques for interconnecting the input ports of microwave filters suitable for sorting signals into large numbers of contiguous frequency bands. Both techniques are capable of extension to very large numbers of channels, and both are believed to be new and useful. Both have been tested at microwave frequencies and give results in reasonable agreement with thos... View full abstract»

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  • A Matched Microwave Limiter (Correspondence)

    Publication Year: 1970, Page(s):283 - 284
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    The microwave limiter described in this correspondence is ideally reflectionless at all power Ievels. The matched limiter is achieved by simply adding a miniature 50-ohm rod resistor to a conventional dual-diode limiter. Although the resulting match is unilateral, it can be made bilateral by adding another diode-resistor combination. Response data of an S-band prototype unit illustrate its capabil... View full abstract»

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  • Bandpass and Pseudo-High-Pass Quasi-Optical Filters

    Publication Year: 1970, Page(s):253 - 259
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (848 KB)

    Two forms of quasi-optical filters are discussed herein for use at millimeter-wave frequencies and possibly for far infrared frequencies. One form consists of metallic grids with intervening dielectric support material which forms a quasi-optical filter analogous to the inductively coupled waveguide bandpass filter. Because of dielectric losses, the relatively weak upper stopband, and the rapidly ... View full abstract»

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  • A Comparison of One- and Two-Idler Parametric Amplifiers (Correspondence)

    Publication Year: 1970, Page(s):277 - 278
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The performance of a two-idler parametric amplifer is compared with that of a single-idler amplifer with a broad-banding resonator at its input. Both circuits contain the same varactor and are pumped at the same frequency. For most of the cases considered the two-idler amplifier gives a somewhat narrower bandwidth, slightly higher noise temperature, but lower sensitivity to variation of m... View full abstract»

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  • Mode Charts for Cylindrical Microwave Resonators (Program Descriptions)

    Publication Year: 1970, Page(s): 285
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This program calculates, prints, and plots the data for mode charts. Frequency range, cavity parameters, graph size, grid spacing, and required modes are all user specified. View full abstract»

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  • A Wide-Band Parallel-Connected Balun

    Publication Year: 1970, Page(s):259 - 263
    Cited by:  Papers (7)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    It is pointed out that parallel-connected baluns (4:1 impedance transformation) have approximately four times the operating bandwidth of series-connected baluns (1:1 impedance transformation). The simple theory of uncompensated resonant baluns is discussed, and design curves are presented which may be used to design any balun of this type. Experimental results are given on one type of parallel-con... View full abstract»

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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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