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IRE Transactions on Microwave Theory and Techniques

Issue 3 • July 1958

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  • [Front cover - Jul. 1958 [T-MTT]]

    Publication Year: 1958, Page(s):f1 - f2
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    Freely Available from IEEE
  • Table of contents (Jul. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 247
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  • Message from the Editor (Jul. 1958 [T-MTT])

    Publication Year: 1958, Page(s): 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (22 KB)

    Beginning with this issue, the members of the Editorial Board of the IRE Transactions on Microwave Theory and Techniques will be listed on the Table of Contents page. View full abstract»

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  • Biography - Lan Jen Chu

    Publication Year: 1958, Page(s): 249
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (255 KB)

    Lan Jen Chu was Hweiying, Kiangsu, born on August 24, 1913 in China. He graduated from Chiao Tung University, Shanghai, China with the B.S. degree in electrical power in 1934. He received the S.M. degree in 1935 and the SC. D. in electrical engineering from M.I.T. in 1938. View full abstract»

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  • Education for Electrical Engineering

    Publication Year: 1958, Page(s): 250
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (110 KB)

    Thirty years ago an underduate program in electrical engineering consisted chiefly of studying the design and operation of the electrical devices--then relatively few--that were in use at the time. The program included subjects on generators, motors, transmission systems, telephone and telegraph systems, radio, and electric batteries. An average graduate was considered to be adequately equipped to... View full abstract»

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  • Report of Advances in Microwave Theory and Techniques-1957

    Publication Year: 1958, Page(s):251 - 263
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1790 KB)

    This report is devoted to advances in theory, experiment, and application of microwave sources, amplifiers, circuits and circuit elements, transmission lines, and detectors. The radiation, propagation, and reception of microwaves are mentioned only indirectly. An attempt is made to provide coverage of foreign as well as domestic advances. View full abstract»

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  • A New Form of High-Power Microwave Duplexer

    Publication Year: 1958, Page(s):264 - 267
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (453 KB)

    A new form of microwave duplexer, capable of handling twice as much power as an equivalent balanced duplexer is described. It consists of a microwave bridge circuit and a power-sensitive half-wavelength phase shifter. A simple gas-discharge tube is used in the phase shifter, which changes the length in one arm of the bridge circuit by a half-wavelength for high-power and low-power microwave pulses... View full abstract»

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  • Radiation from a Rectangular Waveguide Filled with Ferrite

    Publication Year: 1958, Page(s):268 - 277
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (874 KB)

    This paper presents an approximate analytical solution to the problem of radiation from a ferrite-filled rectangular waveguide. The field distribution at the mouth of the guide is assumed to be unaffected by the termination of the guide. The vector Huygens' principle is applied to find the far-zone radiation field from the determined aperture field. The solution to the problem is found in this man... View full abstract»

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  • Launching Efficiency of Wires and Slots for a Dielectric Rod Waveguide

    Publication Year: 1958, Page(s):277 - 284
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (754 KB)

    This paper describes an experimental investigation of surface wave launching efficiency. Wires, rings, and slots are considered as exciters of the HE11 mode on a dielectric rod image line. A formula is derived which relates the efficiency of a launcher to its impedance as a scatterer on the surface waveguide. Efficiency is obtained by using this formula and also by applying Deschamps' m... View full abstract»

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  • Microwave Switching by Crystal Diodes

    Publication Year: 1958, Page(s):284 - 290
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (735 KB)

    This paper gives the results of an investigation of the use of a microwave crystal as an RF switching element. Variation of a dc bias applied to the crystal will change its impedance, thereby providing an electronic control of microwave power. Empirical data are correlated with the physical structure of the crystal and its equivalent circuit to establish the frequency and power limitations of the ... View full abstract»

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  • Dielectric Image Lines

    Publication Year: 1958, Page(s):291 - 299
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (803 KB)

    Some further studies on the dielectric image line are presented. Following a verification of field purity for the conventional image system, the effects of dielectric constant and dielectric geometry on loss, dispersion, and field extent are examined. Results are also discussed for an asymmetric line, i.e., the case of dielectric binding medium partially submerged in an image surface. View full abstract»

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  • A Fast Ferrite Switch for Use at 70 KMC

    Publication Year: 1958, Page(s):300 - 303
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (754 KB)

    A normally open (attenuating) switch using ferrites has been built to operate in the 70-kmc region. It can be operated in 0.5 µsec and can be used with high duty cycles. The attenuation is about one db in the closed position and about 60 db in the open position. Construction and performance of the switch are discussed. View full abstract»

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  • Theoretical Analysis of the Operation of the Field-Displacement Ferrite Isolator

    Publication Year: 1958, Page(s):303 - 308
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (657 KB)

    A theoretical analysis of the resistance-sheet isolator is carried out, and numerical solutions are obtained for the forward and reverse propagation constants of the distorted dominant mode in a rectangular waveguide containing a transversely magnetized thick ferrite slab displaced slightly from the side wall. The microwave electric field patterns within the waveguide are plotted for several value... View full abstract»

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  • Reciprocity Relationships for Gyrotropic Media

    Publication Year: 1958, Page(s):308 - 310
    Cited by:  Papers (48)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Reversal of the dc magnetic field in gyrotropic media transposes the tensor permeability and permittivity. It is shown that this also transposes the impedance, admittance, and scattering matrices any device. It follows from this that the usual reciprocity statements for isotropic media apply to gyrotropic media if one reverses the dc magnetic field whenever an interchange of source and is made. View full abstract»

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  • Broad-Band Stepped Transformers from Rectangular to Double-Ridged Waveguide

    Publication Year: 1958, Page(s):311 - 314
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (554 KB)

    The design of a series of broad-band Tchebycheff-type stepped waveguide transformers from various sizes of standard rectangular waveguides to a double ridged waveguide covering the frequency range of 4750 to 11,000 mc is described. Four separate transformers employing RG-67/U (WR-90), RG-68/U (WR-112), RG-106/U (WR-137), and WR-159 to Airtron ARA-133 double-ridged waveguide have been designed usin... View full abstract»

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  • A Wide-Band Balun

    Publication Year: 1958, Page(s):314 - 316
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Experimental results are given for a transformer from an unbalanced 50-ohm coaxial line to a balanced pair of 50-ohm coaxial lines. The design is one proposed by Marchand. The balance, standing wave ratio, and insertion loss are nearly constant over a 13 to 1 frequency range from 650 mc to 8500 mc. The standing wave ratio is less than 2.1 to one and the insertion loss is about 0.5 db over this ban... View full abstract»

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  • Power-Flow Relations in Lossless Nonlinear Media

    Publication Year: 1958, Page(s):317 - 324
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (758 KB)

    The Manley-Rowe relations, originally derived for nonlinear lumped circuit elements, are generalized to include the power flow in the fields produced in the presence of lossless, nonlinear media. The generalization is carried out first for nonlinear anisotropic media with single-valued relations between the instantaneous /bar E/ and /bar P/, and /bar H/ and /bar M/. The proof is extended to includ... View full abstract»

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  • One Aspect of Minimum Noise Figure Microwave Mixer Design

    Publication Year: 1958, Page(s):324 - 326
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (274 KB)

    A theory is derived which enables a direct measurement of the optimum RF impedance for minimum noise figure. This is achieved by an extension of Pound's method for loss measurements. Also, an analysis is made of the relation between minimum noise figure and maximum gain of the mixer represented as a two-port network. The procedure consists of first matching the RF signal input terminals with short... View full abstract»

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  • A Broad-Band High-Power Vacuum Window for X Band

    Publication Year: 1958, Page(s):326 - 330
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (546 KB)

    Recent developments in high-power tubes for the 3-cm wavelength region have created a need for waveguide output windows which are capable of transmitting peak power in excess of 1 megw and average power in the neighborhood of 1 kw, and which have frequency bandwidths of about 15 per cent. This paper describes a structure which is designed to meet these electrical requirements, and which also has d... View full abstract»

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  • On Riblet's Theorem (Correspondence)

    Publication Year: 1958, Page(s):331 - 332
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (225 KB)

    Riblet presented the following theorem which is concerned with the synthesis of a quarter-wave impedance transformer. View full abstract»

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  • A 5-MM Resonance Isolator (Correspondence)

    Publication Year: 1958, Page(s): 331
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (338 KB)

    The rectangular waveguide resonance isolator operating at frequencies from 3000 to 24,000 mc is a simple and compact device since the dc magnetic field requirements are relatively low. In the 5-mm range, however, resonance isolators are not practical if conventional ferrites are used because very high magnetic fields of about 20,000 oersteds are required to obtain resonance at these high frequenci... View full abstract»

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  • Ferrite Directional Couplers with Off-Center Apertures (Correspondence)

    Publication Year: 1958, Page(s):332 - 333
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (247 KB)

    A recent study of Bethe's small-hole coupling theory has led to an extension of his work to include the case where the coupling aperture is filled with an anisotropic ferrite. This new theory is applicable to any situation where Bethe's coupling theory is useful and is hindered chiefly by inadequate expressions for the magnetic dipole moments of the ferrite. View full abstract»

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  • A Modulator for Microwave Mixers (Correspondence)

    Publication Year: 1958, Page(s):333 - 334
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (283 KB)

    A method is described for producing an amplitude modulated wave at an intermediate frequency from the mixing of two cw signals in a coaxial or waveguide system. The method is adaptable to any frequency range in which crystal mixers are used. At least 82 per cent modulation is produced by this method, and the envelope is a square wave. The repetition rate is 0 to 20 kc with presently available comm... View full abstract»

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  • Reciprocal Ferrite Phase Shifters in Rectangular Waveguide (Correspondence)

    Publication Year: 1958, Page(s): 334
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (155 KB)

    A recent article by Reggia and Spencer describes a reciprocal ferrite phase shifter for rectangular waveguide, This phase shifter consists of a pencil of ferrite suspended along the central axis of the waveguide by means of a dielectric. The phase is controlled by an applied longitudinal magnetic field. This geometry is shown in Fig. 1. Large amounts of phase shift are produced by this geometry wi... View full abstract»

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  • Contributors (Jul. 1958 [T-MTT])

    Publication Year: 1958, Page(s):335 - 337
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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