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IRE Transactions on Microwave Theory and Techniques

Issue 1 • January 1958

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Displaying Results 1 - 25 of 28
  • [Front cover - Jan. 1958 [T-MTT]]

    Publication Year: 1958, Page(s):f1 - f2
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  • Table of contents (Jan. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 1
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  • Biography - Clarence Lester Hogan

    Publication Year: 1958, Page(s): 2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (219 KB)

    Clarence Lester Hogan was born on February 8, 1920, in Great Falls, Mont. He received the B.S. degree in chemical engineering from Montana State College in 1942. While an undergraduate he was elected to Phi Kappa Phi and Tau Beta Pi and received two awards: the American Chemical Society Award, based on an election by the faculty and student body, and given to a junior student showing great promise... View full abstract»

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  • The Pace of Modern Technology

    Publication Year: 1958, Page(s): 3
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    In 1946, J. H. E. Griffiths published in Nature the first account of an experimental observation of the phenomenon of ferromagnetic resonance. Naturally enough this paper elicited little interest from electrical engineers, nor did the theoretical work of C. Kittel and D. Polder published during the next three years which gave a quantitative explanation of Griffith's experiment. Now, however, appro... View full abstract»

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  • Foreword (Jan. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 4
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    With the tremendous advances being made in the microwave ferrite field and solid-state microwave devices, and with the success of the Harvard Symposium in April, 1956, it was felt that further symposia were desired on the subject especially at the radio engineers' level. Hence, it was proposed that the Long Island, New York, and Northern New Jersey Chapters of the PGMTT hold a jointly sponsored me... View full abstract»

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  • The Status of Microwave Applications of Ferrites and Semiconductors

    Publication Year: 1958, Page(s):5 - 18
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1711 KB)

    The recent developments in the field of ferrite devices are reviewed. Emphasis is placed on the extension of nonreciprocal devices to lower microwave frequencies. and high powers. The design considerations and achievements of broad banding also are covered. Fundamental principles leading to the applications of non-linear properties of ferrites are described briefly. Preliminary experimental accomp... View full abstract»

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  • Nonreciprocal Electromagnetic Wave Propagation in Ionized Gaseous Media

    Publication Year: 1958, Page(s):19 - 29
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1462 KB)

    The nonreciprocal propagation of electromagnetic waves in ionized gaseous media is discussed, and experimental observations are reported in this paper. The classical Faraday experiment in the optics of anisotropic media has suggested an analogous phenomenon at microwave frequencies. The anisotropic behavior of the free electron gas which is immersed in a magnetic field and subjected to an incident... View full abstract»

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  • The Three-Level Solid-State Maser

    Publication Year: 1958, Page(s):29 - 38
    Cited by:  Papers (6)
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    This article gives an introduction to amplification by solid-state maser techniques. Emphasis is placed on the three-level solid-state maser. The relevant physical properties of paramagnetic salts are discussed. The basis of the three-level excitation method is reviewed. Some design considerations are given. The design and performance characteristics of a particular device are mentioned. View full abstract»

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  • Nonmechanical Beam Steering by Scattering from Ferrites

    Publication Year: 1958, Page(s):38 - 42
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    A small aperture radiating circularly polarized energy is loaded with a spherical ferrite to produce an electronic beam directing system. The ferrite is immersed in a static magnetic field which is in general at an oblique angle with the unreflected direction of radiation. It is shown that radiation is principally in the direction of the magnetic field when the polarization is in the negative sens... View full abstract»

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  • A Ferrite Boundary-Value Problem in a Rectangular Waveguide

    Publication Year: 1958, Page(s):42 - 46
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (379 KB)

    A solution is obtained for the electric field at the air-ferrite interface (z=0) in a rectangular waveguide filled with ferrite in the semi-infinite half (z>0) and magnetized in the direction of the electric field. The field is expressed in terms of a Neumann series obtained by iteration of a singular integral equation which satisfies the boundary conditions at the interface. The equivalent cir... View full abstract»

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  • Some Techniques of Microwave Generation and Amplification Using Electron Spin States in Solids

    Publication Year: 1958, Page(s):47 - 52
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (690 KB)

    Possible modes of operation of two-level solid state masers utilizing the techniques of population inversion used in nuclear magnetic resonance are described. Methods of continuous operation of two-level masers and their usefulness as microwave generators are discussed. View full abstract»

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  • A Microwave Ferrite Frequency Separator

    Publication Year: 1958, Page(s):53 - 58
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (775 KB)

    When multiple filter groups are interconnected for operation out of a single source, interaction effects between filters can occur. Frequently, unless special precautions are taken, the filters may interact to such an extent that severe deterioration in performance may result. Introduction of the gyrator by Tellegen and the subsequent microwave realization of the circulator by Hogan, Rowen, and ot... View full abstract»

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  • Ferrite-Loaded, Circularly Polarized Microwave Cavity Filters

    Publication Year: 1958, Page(s):59 - 65
    Cited by:  Papers (2)
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    CircuIarly polarized cavities have made possible a group of compact, high-Q, microwave waveguide filters having useful directional properties. When these cavity filters are ferrite loaded, frequency sensitive circulators result and magnetic tuning becomes possible. This paper presents several new three- and four-port ferrite-loaded filters, some with 3-db waveguide couplers, which can be used as t... View full abstract»

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  • Resonant Properties of Nonreciprocal Ring Circuits

    Publication Year: 1958, Page(s):66 - 71
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (551 KB)

    The ring circuit investigated consists of a resonant ring guide coupled to a main guide. The properties can be described by the equations for the waves in the ring guide resulting from excitation in the main guide. The influence of nonreciprocity on the properties is investigated under conditions of varying coupling. The representation of the ring waves by the poles and zeros is chosen to permit i... View full abstract»

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  • Exact Solution for a Gyromagnetic Sample and Measurements on a Ferrite

    Publication Year: 1958, Page(s):72 - 76
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (690 KB)

    An outline of an exact solution for a gyromagnetic rod centered in a right circular cylindrical cavity resonator is given. This solution is applied in evaluating dielectric and tensor-magnetic measurements on a well-known ferrite. Complex frequencies and constitutive parameters are introduced and the solution is expanded in series to obtain a convenient calculational scheme. Comparisons are made o... View full abstract»

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  • Resonance Measurements on Nickel-Cobalt Ferrites as a Function of Temperature and on Nickel Ferrite-Aluminates

    Publication Year: 1958, Page(s):77 - 82
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The variation of line width (Delta H) and effective g factor (geff) with cobalt content and with temperature is studied in a series of ferrites of composition Ni1- alphaCoalphaMn0.02Fe1.9O4+-. Here alpha lies between 0 and 0.09; temperatures range from 20° to 340° C. A minimum in Delta H is observed at alpha=0.027; g... View full abstract»

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  • Ferromagnetic Resonance in Some Polycrystalline Rare Earth Garnets

    Publication Year: 1958, Page(s):83 - 91
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (938 KB)

    Ferromagnetic resonance measurements have been carried out on a series of polycrystalline garnets of composition 5Fe2O3 · 3M2O3 with M=Y, Sm, Gd, Dy, Ho, Er, and Yb. These measurements were made over a temperature range from 20°C to the Curie points (approximately 280°C). The variations of line widths and effective g values over this tempe... View full abstract»

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  • Reciprocal Ferrite Devices in TEM Mode Transmission Lines

    Publication Year: 1958, Page(s):91 - 96
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    Several new reciprocal ferrite devices have been designed in TEM mode transmission lines to operate over both narrow and extremely broad bandwidths in the low-microwave frequency region. These include variable attenuators, an amplitude modulator, and a traveling-wave tube equalizer. Each component utilizes the attenuation associated with gyromagnetic resonance in low saturation magnetization ferri... View full abstract»

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  • Measurement of Ferrite Isolation at 1300 MC

    Publication Year: 1958, Page(s):97 - 100
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (834 KB)

    Optimum geometry for ferrite isolators at low microwave frequencies in rectangular waveguide is discussed and measurements are presented which show the feasibility of constructing a practical isolator at 1300 mc using commercially available ferrites. Further data for a narrower line-width ferrite are presented. The high-reverse to forward-loss ratios obtained are in accord with predictions from pe... View full abstract»

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  • An Electronic Scan Using a Ferrite Aperture Luneberg Lens System

    Publication Year: 1958, Page(s):101 - 103
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (293 KB)

    Ream displacements up to +-30° have been observed in the radiation patterns from various ferrite-loaded waveguide apertures in transverse magnetic fields. The apertures are used as feeds for Luneberg lenses, and electrical Iobing of narrow pencil beams is accomplished. The proposed use of a square waveguide ferrite-filled feed for a sequential lobing system is described. View full abstract»

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  • Round Table Discussion on Design Limitations of Microwave Ferrite Devices

    Publication Year: 1958, Page(s):104 - 111
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1090 KB)

    The 1957 Annual PGMTT Meeting concluded on May 10 with a round table discussion on Design Limitations of Microwave Ferrite Devices. This discussion was moderated by Professor C. L. Hogan of Harvard University, and the panel members were Drs. J. O. Artman, H, J. Carlin, D. L. Fresh, G. S. Heller, R. C. LeCraw, H. Seidel, and P. H. Vartanian. The topics considered appropriate for discussion were: 1)... View full abstract»

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  • Note on Impedance Transformations by the Isometric Circle Method (Correspondence)

    Publication Year: 1958, Page(s):111 - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (219 KB)

    The isometric circle method is a graphical method of transforming a complex quantity by the linear fractional transformation. It has recently been applied to impedance transformations through bilateral two-port networks. The purpose of this note is to show the connection between the isometric circle method and another graphical method called the "triangular" method, and also to present a useful fo... View full abstract»

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  • On the Pressure Dependence of Microwave Crystal Rectifiers (Correspondence)

    Publication Year: 1958, Page(s): 112
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    During the past couple of years, as a result of government interest, silicon microwave crystal rectifiers have not only decreased their noise figures but also have increased their resistance to adverse environments; i.e., high burnout, high temperature, excessive humidity. View full abstract»

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  • PGMTT News (Jan. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 113
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    The Annual PGMTT Meeting was held May 9-10 in New York, N. Y., at the Western Union Auditorium. Three hundred and six attended the outstanding program. Twenty-three technical papers were given, three of which had been invited. View full abstract»

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  • Call for Papers - 1958 PGMTT National Symposium (Jan. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 114
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Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is IEEE Transactions on Microwave Theory and Techniques.

Full Aims & Scope