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IEEE Transactions on Microwave Theory and Techniques

Issue 10 • Date Oct. 1973

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Displaying Results 1 - 19 of 19
  • [Front cover - Oct. 1973]

    Publication Year: 1973, Page(s):f1 - f2
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    Freely Available from IEEE
  • Comments on "Accurated Etermination of Varactor Resistance at UHF and Its Relation to Parametric Amplifier Noise Temperature" [Letters]

    Publication Year: 1973, Page(s): 654
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (87 KB)

    First Page of the Article
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  • Contributors, Oct. 1973

    Publication Year: 1973, Page(s): 655
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  • Information for authors

    Publication Year: 1973, Page(s): 656
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  • [Back cover]

    Publication Year: 1973, Page(s):b1 - b2
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    Freely Available from IEEE
  • Bandwidth Enhancement in Dielectric-Lined Circular Waveguides (Short Papers)

    Publication Year: 1973, Page(s):651 - 654
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    The increase in TE11-TM01 mode bandwidth obtained by inhomogeneously loading (dielectric lining) a circular waveguide is systematically documented. Maximum bandwidth is about 31.83 percent of center frequency (up from about 26.54 percent for fully filled or empty circular waveguides). This makes circular waveguides competitive with square waveguides (bandwidth≈ 34.3 per... View full abstract»

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  • Nonlinear Behavior and Bias Modulation of an IMPATT Diode Oscillator

    Publication Year: 1973, Page(s):619 - 630
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB)

    Experimental results of the nonlinear behavior of an IMPATT diode oscillator under free-running and bias-modulated conditions are presented and correlated with theoretical results. Amplitude and frequency behavior of a free-running IMPATT diode oscillator such as: 1) power-frequency characteristic, 2) jump and hysteresis, 3) temperature dependence, 4) harmonic content, and 5) electronic tuning cha... View full abstract»

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  • Normal Transmission-Line Networks and Their Lumped LC Presentation

    Publication Year: 1973, Page(s):601 - 607
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A previous result is extended and a new presentation is described for Richards' transmission-line (TL) networks. The new presentation is in a lumped LC form; therefore, classical analysis and synthesis techniques are directly applicable. The class of networks for which this presentation is possible is studied in detail. This class of networks, called normal TL networks, is found to be a necessary ... View full abstract»

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  • The Circular Waveguide Step-Discontinuity Mode Transducer (Short Papers)

    Publication Year: 1973, Page(s):633 - 636
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Power conversion coefficients and the launch phase of propagating modes excited by a symmetric step-discontinuity in circular waveguide are accurately predicted by a modal analysis of the discontinuity which includes only a few evanescent modes. The relative power in transmitted and reflected propagating modes is presented as a function of normalized frequency for two step-discontinuity ratios to ... View full abstract»

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  • High-Power Frequency Multiplier Using MIS Varactors (Short Papers)

    Publication Year: 1973, Page(s):648 - 649
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The experiment described demonstrates the applicability of MIS varactors in microwave power circuits. A frequency doubler with 55-percent overall efficiency and pulsed output power of 5.5 W at 5.4 GHz with a duty cycle of 50 percent has been built by using two MIS varactors in parallel. The multiplier has a coaxial low-pass filter at the input and a waveguide output, allowing a 3-dB bandwidth of 8... View full abstract»

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  • The Effect of Surface Metal Adhesive on Slot-Line Wavelength (Short Papers)

    Publication Year: 1973, Page(s):642 - 644
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    An investigation of the dependence of slot-line wavelength upon a thin layer of adhesive between metal and substrate is described. It is shown that the presence of adhesive will cause an increase in wavelength when the dielectric constant of the adhesive is less than that of the substrate. Experimental results are presented which show this dependence for a variety of surfaces and adhesives. A pert... View full abstract»

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  • Design of Microwave Filters by Sine-Plane Approach

    Publication Year: 1973, Page(s):607 - 611
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Using a new sine-plane approach, an easy-to-use design procedure for microwave filters is developed. The design formulas are very simple and are valid for filters of wide bandwidths. Furthermore, the new design offers many advantages over other presently available designs. View full abstract»

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  • Design of Acoustic Surface-Wave Devices Using an Admittance Formalism

    Publication Year: 1973, Page(s):611 - 618
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    The advantages of an admittance formalism for the derivation of performance characteristics of transversal filters and one-port information stores using acoustic surface-wave delay lines are described. An expression for the transadmittance between transducer pairs in the weak-coupling approximation is derived using a normal mode theory. The formulation is found to give good agreement with measurem... View full abstract»

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  • Radiation Loss from Open-Circuited Dielectric Resonators (Short Papers)

    Publication Year: 1973, Page(s):636 - 639
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The Q factor of an open-circuited resonator is influenced by dielectric, conductor, and radiation losses. This short paper discusses these losses and shows that insight into the radiation loss can be obtained by an extension to the analysis given by Lewirt. This shows that the radiation loss is a maximum for the dominant mode and that provided the permittivity is not less than 9.0 the radiation lo... View full abstract»

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  • Metallic Frame Beam Waveguide (Short Papers)

    Publication Year: 1973, Page(s):649 - 651
    Cited by:  Papers (1)
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    Experimental tests performed on metallic frame beam waveguides are described. Two types of metallic structures have been considered. The first one constituted by thin annular frames has the same attenuation value as that of an iris beam waveguide (infinite slit) of the same aperture, but presents guiding properties which are polarization sensitive. The second type of a more complex structure is es... View full abstract»

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  • The Limiting Value of the Interaction Between Symmetrical Fringing Capacitances (Short Papers)

    Publication Year: 1973, Page(s):644 - 647
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    It is well known that the fringing capacitances determined for rectangular bars between parallel plates interact with each other when w/(b -t)→0. The limit of this interaction as s→0 for fixed w, b, and t is determined for symmetrical odd-mode fringing capacitances. This limit, together with an exact value known from one rectangular section and the known asymptotic value as s→ 0, pe... View full abstract»

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  • Waveguide and Stripline 4-Port Single-Junction Circulators (Short Papers)

    Publication Year: 1973, Page(s):630 - 633
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    The modal and eigenvalue approaches of 4-port single-junction circulators are combined to describe the theory and construction, of a waveguide device and a stripline device. The three independent variables used in the case of the waveguide one are a pair of HEspl plusmn1,1,1 open dielectric resonances in a demagnetized ferrite disk, a TM0,1,1 resonance on a metal post, and th... View full abstract»

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  • Swept Frequency Impedance Indicator Using Directional Couplers (Short Papers)

    Publication Year: 1973, Page(s):647 - 648
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    A swept frequency impedance indicator which consists of directional couplers and detectors is described. Experimental equipment was made at a 17.5-19.5-GHz band, and successfully operated. View full abstract»

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  • A Numerical Method for the Solution of the Junction of Cylindrical Waveguides (Short Papers)

    Publication Year: 1973, Page(s):640 - 642
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    In order to solve the waveguide junction problem numerically, we express the fields in the guides by truncated modal expansions and construct an error function which is a measure of the mean-square error in the matching of the boundary conditions at the junction. The minimum of this error leads to a set of linear equations for the modal amplitudes. Offset rectangular waveguides with amplitude and ... 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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