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IRE Transactions on Microwave Theory and Techniques

Issue 1 • January 1959

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Displaying Results 1 - 25 of 42
  • [Front cover - Jan. 1959 [T-MTT]]

    Publication Year: 1959, Page(s):f1 - f2
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    Freely Available from IEEE
  • Table of contents (Jan. 1959 [T-MTT])

    Publication Year: 1959, Page(s): 1
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    Freely Available from IEEE
  • Message from the Chairman (Jan. 1959 [T-MTT])

    Publication Year: 1959, Page(s): 2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (34 KB)

    A major portion of the operation of the PGMTT rests each year upon several editors, committee chairmen and other individuals. While it has not been customary to honor them with any special recognition, we wish to take this opportunity to identify them to express appreciation for their generous contribution of time and effort. View full abstract»

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  • Biography - Wilbur L. Pritchard

    Publication Year: 1959, Page(s): 3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (159 KB)

    Wilbur L. Pritchard (A'45-M'48-SM'52) was born in New York, N.Y., on May 31, 1923. He received the B.E.E. degree in 1943 from the College of the City of New York. From 1948 to 1951 he was gaged in part-time graduate study at the Massachusetts Institute of Technology. View full abstract»

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  • Education and Science in a Mature Society

    Publication Year: 1959, Page(s): 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (121 KB)

    During recent years self-examination by many thinking Americans has evolved extensive criticism of our educational system. On the one hand, just after the war the criticism was engendered largely by the apparent political naivete of some engineers and scientists. This unawareness on their part contributed to several unfortunate incidents and made the public sensitive to the need for political and ... View full abstract»

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  • Foreword (Jan. 1959 [T-MTT])

    Publication Year: 1959, Page(s): 5
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    Plans for the 1958 PGMTT National Symposium started during August, 1957 with a decision by the San Francisco Chapter of the PGMTT to try to hold the Symposium on the West Coast. View full abstract»

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  • Microwave Radiation from Ferrimagnetically Coupled Electrons in Transient Magnetic Fields

    Publication Year: 1959, Page(s):6 - 11
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (535 KB)

    Under certain restrictive conditions it appears that ferrimagnetically coupled electron spins are capable of coupling energy from a transient magnetic field and giving it up in the form of microwave radiation. This paper analyzes the behavior of the uniform precession of motion in ferromagnetic insulators under the influence of transient magnetic fields of changing amplitude and direction. The exp... View full abstract»

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  • Ferrite High-Power Effects in Waveguides

    Publication Year: 1959, Page(s):11 - 15
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Deterioration of ferrite devices caused by both high power thermal and nonlinear effects are discussed. It is shown that thermal effects can be described, at least qualitatively, by a simple exponential equation. A theoretical maximum power capacity is derived in terms of ferrite configuration parameters. The results of experiments with high peak powers at both S-band and X-band frequencies are co... View full abstract»

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  • Temperature Effects in Microwave Ferrite Devices

    Publication Year: 1959, Page(s):15 - 18
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (314 KB)

    With proper choice of shape, it is possible to minimize the frequency shift of ferromagnetic resonance in microwave ferrite components operating over a wide range of ambient temperatures. Calculations have been made for minimum resonance frequency shift change in saturation moment. Curves relating the resonance frequency shift as a function of saturation magnetization are plotted for several ferri... View full abstract»

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  • Characteristics of Ferrite Microwave Limiters

    Publication Year: 1959, Page(s):18 - 23
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (619 KB)

    Microwave ferrites that exhibit a nonlinear RF absorption as a function of RF power level can be utillzed in the construction of a passive microwave device which will allow small RF signals to be transmitted with very little attenuation but which will attenuate large RF signals considerably. Such a device tends to "limit" the amplitude of the microwave energy passing through the device and is ther... View full abstract»

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  • Nonreciprocity in Dielectric Loaded TEM Mode Transmission Lines

    Publication Year: 1959, Page(s):23 - 27
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (513 KB)

    An analysis is presented of partially dielectric loaded strip transmission line from the point of view of ferrite applications. It is shown that the microwave magnetic field is elliptically polarized both at the dielectric surface and within the dielectric. The degree of elliptical polarization is expressed analytically as a function of the dielectric constant, the degree of dielectric loading, an... View full abstract»

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  • Ferrite Phase Shifter for the UHF Region

    Publication Year: 1959, Page(s):27 - 31
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB)

    An extremely compact, low-loss, ferrite phase shifter has been developed for the 200 to 800-mc region. It consists of a folded stripline structure approximately 61/2 inches long and less than 1 inch square in cross section. The device requires a longitudinal magnetic field of sufficient intensity to place the operating region above resonance. For field swings of about 900 oersteds (from 430 to 125... View full abstract»

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  • A Ferrite Serrodyne for Microwave Frequency Translation

    Publication Year: 1959, Page(s):32 - 37
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (797 KB)

    A ferrite serrodyne has been developed to produce a frequency translation of X-band microwave signals over ranges from zero to 50 kc. The device consists of an efficient longitudinal field ferrite phase shifter and an associated electronic driver for generating the modulating sawtooth. Transmission or reflection operation is possible. A conversion loss of 1 to 2 db is obtained. Suppression of spur... View full abstract»

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  • Broad-Band Ferrite Rotators Using Quadruply-Ridged Circular Waveguide

    Publication Year: 1959, Page(s):38 - 41
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    It has been shown that the rotation of the plane of polarization of a wave propagating in a magnetized unbounded ferrite medium should be independent of frequency. However this is not the case when a ferrite rod of small diameter is placed within a waveguide. For example, if a ferrite rod one-quarter inch in diameter in a fifteen-sixteenth inch diameter circular waveguide is used, the rotation wil... View full abstract»

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  • Present State of the Millimeter Wave Generation and Technique Art--1958

    Publication Year: 1959, Page(s):42 - 61
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2042 KB)

    Two of the few fruitful approaches to the low millimeter and submillimeter wave generation problem appear to be frequency multiplication by means of nonlinear phenomena and frequency conversion by parametric systems. Current work on frequency multiplication using relativistic megavolt beams, crystal diodes, field emitters, ferrites, etc., is reviewed. A brief account of present efforts to extend c... View full abstract»

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  • Millimeter-Wave Generation Experiment Utilizing Ferrites

    Publication Year: 1959, Page(s):62 - 65
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    It is estimated that at least 50 watts of peak power at 2-mm wavelength has been generated from 4-mm excitation by harmonic generation in ferrites. This experiment is similar to the frequency doubling previously reported from 9 to 18 kmc, except for some differences in optimum geometry and material. A wide range of ferrites has been used, as well as garnets and permanent magnet type materials. In ... View full abstract»

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  • Some Characteristics of Dielectric Image Lines at Millimeter Wavelengths

    Publication Year: 1959, Page(s):65 - 69
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (714 KB)

    The attenuation characteristics of several dielectric image lines have been calculated for the frequency range extending from 24 to 100 kmc and have been checked experimentally at 35 and 70 kmc. To obtain low attenuation at these high frequencies, dielectric materials with little loss and small size of cross section are required, while low values of the dielectric constant are also desirable. The ... View full abstract»

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  • The Interaction of Microwaves with Gas-Discharge Plasmas

    Publication Year: 1959, Page(s):69 - 72
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB)

    The interaction of microwaves with gas-discharge plasmas provides a valuable tool for studying the fundamentals of gas-discharge phenomena and methods of controlling and switching microwave power. A summary of our present state of knowledge in this field is presented by using as particular examples the interaction of high density and low density gas-discharge plasmas in S-band resonant cavities, b... View full abstract»

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  • High Power, Magnetic Field Controlled Microwave Gas Discharge Switches

    Publication Year: 1959, Page(s):73 - 82
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1386 KB)

    A new type of gas discharge switch is described, It is electronically controllable, broadband, and capable of rapidly switching high power pulsed microwaves from either of two waveguide input ports to a single waveguide output port, or from one waveguide input port to either of two waveguide output ports. The electronic control is achieved by turning on or off a magnetic field set for cyclotron re... View full abstract»

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  • Solid-State Microwave Amplifiers

    Publication Year: 1959, Page(s):83 - 91
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1218 KB)

    The maser and the parametric amplider form a new class of microwave amplifiers which can exploit the properties of bound electrons in a solid. These amplifiers have several common characteristics, among them being their very low-noise performance. This paper reviews the method of operation of these amplifiers, discusses the performance achieved and achievable by the various versions, and points up... View full abstract»

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  • A UHF Solid-State Maser

    Publication Year: 1959, Page(s):92 - 94
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB)

    Chromium doped potassium cobalticyanide has been utilized in the design and construction of a solid-state maser operating in the frequency range of 300 to 500 mc. The pumping frequency is fixed at 5400 mc and the magnetic field required is in the vicinity of 80 gauss. The design utilizes a cavity mode at the pumping frequency and a tuned loop at the operating frequency, thus avoiding the design co... View full abstract»

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  • A Microwave Frequency Standard Employing Optically Pumped Sodium Vapor

    Publication Year: 1959, Page(s):95 - 98
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (501 KB)

    An instrument in which a simple microwave triode oscillator is stabilized by reference to a natural atomic resonance---the field-independent hyperfine resonance of sodium---is described. Light from a sodium lamp is transmitted through an absorption cell containing sodium vapor and argon, which is placed in a resonant cavity. This light produces population differences between the two quantum levels... View full abstract»

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  • Microwave Filter Design Using an Electronic Digital Computer

    Publication Year: 1959, Page(s):99 - 101
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (343 KB)

    It is shown how a transmission-line circuit can be analyzed by a digital computer. Transformation matrices are used and broken down into equations which are applicable to a computer. "Synthesis by computer" involves feeding in an approximate design and programming the computer to search for better parameters until the performance matches the specification. Examples are given to indicate time and c... View full abstract»

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  • Measurement of Two-Mode Discontinuities in a Multimode Waveguide by a Resonance Technique

    Publication Year: 1959, Page(s):102 - 110
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1685 KB)

    The deliberate use of two or more propagating modes in a multimode waveguide, and a knowledge of associated control elements, has assumed renewed importance, particularly for millimeter wavelength applications. This paper presents a resonance measurement technique for the precise evaluation of the equivalent network for a lossless shunt discontinuity coupling two nondegenerate modes in a multimode... View full abstract»

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  • Mode Couplers and Multimode Measurement Techniques

    Publication Year: 1959, Page(s):110 - 116
    Cited by:  Papers (17)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (629 KB)

    The measurement of harmonic and spurious signals in waveguide systems is complicated by the fact that one must usually deal with a multimodal measurement. Since the energy may propagate in any mode consistent with the frequency and waveguide geometry, the measurement system used must discriminate between these different modes. A simple and direct approach to this problem is through the use of "mod... View full abstract»

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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