Transactions of the IRE Professional Group on Microwave Theory and Techniques

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  • Characteristic Impedance of the Shielded-Strip Transmission Line

    Publication Year: 1954, Page(s):52 - 57
    Cited by:  Papers (106)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (454 KB)

    Simple formulas are given for the characteristic impedance of a transmission line consisting of a conducting strip of rectangular cross section centered between parallel conducting plates at ground potential. The formulas agree to within 1.2 per cent with an exact formula for a zero thickness strip. In the case of finite thickness up to a quarter of the plate spacing, the formulas are expected to ... View full abstract»

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  • Annular Resonant Slots in Dielectric-Filled Circular Waveguide

    Publication Year: 1953, Page(s):39 - 43
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (411 KB)

    Measurements were made to determine the properties of thin annular resonant slots in polystyrene-filled circular waveguide, in which the TE11 mode is propagating. Data on the variation of susceptance of these slots as a function of frequency through the X-band region is presented in graphic form. Quantitative information relating the resonant frequency and Q of these slots to their geom... View full abstract»

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  • Optical Methods for the Measurement of Complex Dielectric and Magnetic Constants at Centimeter and Millimeter Wavelengths

    Publication Year: 1954, Page(s):1 - 12
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1183 KB)

    A method is described which permits the determination of the complex dielectric constant, epsilon* = epsilonoke(l-j tan deltae), and the complex permeability, µ* = µokm (l-j tan deltam), using free space transmission and reflection from a plane sheet of the sample dielectric. The procedure represents an extension of that u... View full abstract»

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  • A Standard Waveguide Spark Gap

    Publication Year: 1953, Page(s):39 - 47
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (937 KB)

    Accurately rating the power handling capacity of a microwave component is a frequent and difficult task. In a study of this problem for the Bureau of Ships, a simple waveguide spark gap has been found to be a valuable tool and its adoption by microwave engineers as a universal standard is recommended. View full abstract»

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  • Compact Top-Wall Hybrid Junction

    Publication Year: 1953, Page(s):29 - 30
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (165 KB)

    Very often in working with a waveguide transmission systems, it is necessary or desirable to couple off from the system a specified amount of the energy for various purposes. A common and practical method of accomplishing this is through the use of directional couplers and waveguide hybrid junctions. The hybrid junction, as used in this discussion, refers to a specialized waveguide directional cou... View full abstract»

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  • Notes on a Crystal Mixer Performance

    Publication Year: 1955, Page(s):37 - 39
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (266 KB)

    A simple relation between optimum rf source impedance for minimum noise figure and the nominal conversion loss of a mixer is derived. This impedance is related to the input mismatch and its dependence on the type of IF amplifier input circuit is discussed. Relations between the crystal noise temperature and mixer noise temperature as a function of conversion loss are derived for different load con... View full abstract»

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  • A Turnstile Polarizer for Rain Cancellation

    Publication Year: 1955, Page(s):10 - 15
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2315 KB)

    This paper describes a rain canceller using a turnstile junction to provide the necessary polarization of the fields. It discusses the system from the point of view of adapting an existing radar feed system to one that will permit the reduction of rain return. The turnstile junction is described, and it is shown to have properties that meet the requirements for obtaining circular or elliptical pol... View full abstract»

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  • The Challenge

    Publication Year: 1955, Page(s): 3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (148 KB)

    There are still many people who remember well when radio was used solely for telegraph purposes. At that time there was no broadcasting, no transoceanic telephony and, of course, no television or radar. Nor were there any of the countless other services now rendered by radio, such as telephone communications with airplanes and with motor vehicles. Beginning back in the early days of radio with the... View full abstract»

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  • Low Loss Dielectric Waveguides

    Publication Year: 1954, Page(s):38 - 47
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (668 KB)

    The history of dielectric waveguides begins back in 1910 with the publication of a theoretical paper by Hondros and Debye, who gave a mathematical treatment of transverse magnetic mode propagation in lossless dielectric guide. In the 1930's Southworth began experimental work on these modes while Carson, Mead, and Schelkunoff developed a general theory which showed the existence of TE, TM, and hybr... View full abstract»

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  • Microwave Radio Relay Link for Military Use

    Publication Year: 1954, Page(s):84 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (606 KB)

    Radio set AN/TRC-29 is the nomenclature for a frequency-modulated microwave radio link equipment designed for military use. It transmits in the band from 1700 to 2400 megacycles and will accept input signals between 30 cycles and 4.5 megacycles. In most cases, It will probably be used in conjunction with Multiplexer Set AN/TCC-13. This latter unit, which will also be described, is a pulse-position... View full abstract»

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  • Properties of Ferrites in Waveguides

    Publication Year: 1953, Page(s):11 - 16
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (449 KB)

    In the past few years research with ferrites has shown that these materials possess unusual properties of considerable importance to microwave engineers. These properties result from the fact that at microwave frequencies and in the presence of a static magnetizing field, these non-conducting ferromagnetic media are characterized by an asymmetric tensor permeability whose components are functions ... View full abstract»

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  • Some Coupled-Wave Theory and Application to Waveguides (Abstract)

    Publication Year: 1953, Page(s): 14
    Cited by:  Papers (114)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (98 KB)

    Coupled transmission lines have been employed as transducers for selectively coupling between a single-mode waveguide and one mode of a multi-mode waveguide. Theoretical relations describing the characteristics of such devices and some results of experiments are to be presented. View full abstract»

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  • Ho1 Mode Circular Waveguide Components

    Publication Year: 1954, Page(s):45 - 51
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (523 KB)

    A convenient method of launching the Ho1 mode in round waveguide is described. Four resonant slots are employed in a compact end-feed transition design. Construction details and performance curves are given. Also described is a developmental bend which avoids the Ho1-E11 mode degeneracy problem by employing a superimposed pair of "E" and "H" plane rectangular waveg... View full abstract»

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Aims & Scope

This Transactions ceased publication in 1955. The current retitled publication is IEEE Transactions on Microwave Theory and Techniques.

Full Aims & Scope