Scheduled System Maintenance on May 29th, 2015:
IEEE Xplore will be upgraded between 11:00 AM and 10:00 PM EDT. During this time there may be intermittent impact on performance. We apologize for any inconvenience.
By Topic

Microwave Theory and Techniques, IRE Transactions on

Issue 2 • Date April 1957

Filter Results

Displaying Results 1 - 25 of 31
  • [Front cover - Apr. 1957 [T-MTT]]

    Publication Year: 1957 , Page(s): f1 - f2
    Save to Project icon | Request Permissions | PDF file iconPDF (89 KB)  
    Freely Available from IEEE
  • Table of contents (Apr. 1957 [T-MTT])

    Publication Year: 1957 , Page(s): 79
    Save to Project icon | Request Permissions | PDF file iconPDF (76 KB)  
    Freely Available from IEEE
  • Message from the Editor (Apr. 1957 [T-MTT])

    Publication Year: 1957 , Page(s): 80
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (35 KB)  

    Beginning with the next issue of these Transactions, Kiyo Tomiyasu will be the Editor. The last two years have seen these Transactions grow both in size and quality of contents. The growth has been a healthy one, and there appears to be every reason to believe that it will continue. In closing my term of office, I would like to thank the various people who have helped to make these Transactions possible. These people include the members of the editorial board whose names are listed below, the Administrative Committee of the Professional Group, the editorial staff at IRE Headquarters, and the many fine authors without whom these Transactions would not exist. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Biography - Alfred C. Beck

    Publication Year: 1957 , Page(s): 81
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (228 KB)  

    Alfred C. Beck was born in Granville, N. Y., on July 26, 1905. He received the E.E. degree from Rensselaer Polytechnic Institute in 1927. During the summers of 1926 and 1927 he worked in the Test Department of the New York Edison Company on various electric power projects, and through the academic year, 1927-1928, he was an instructor in mathematics at Rensselaer Polytechnic Institute. Graduate courses in communications during that year, and experience as a radio amateur (W2AGG), convinced him that his interests were along the lines of radio communication. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Communication Superhighways

    Publication Year: 1957 , Page(s): 82
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (122 KB)  

    Because of advances in communication, it has been said that more progress has been made in science and general living conditions in the last fifty years than in all the thousands of years preceding. Part of this is due to transportation improvements in all divisions--land, water, and air. Today, auto trips from New York to Chicago in about fifteen hours demonstrate strikingly what a big advance turnpikes make in surface travel. Such thoroughfares are important for the trucking industry, too, and government is pushing superhighway construction all over the country. On these highways traffic has exceeded all estimates, thus proving their value. The telephone is one of the important parts of the communication art which has contributed so much to our way of living. In its early days, amplification became a necessity for extending the talking distances, and fifty years ago the birth of the electron tube made this practical, as well as ushering in the electronic art which gave us our profession. And this tube, by the process of modulation, led to carrier systems, stacking up many individual channels on single transmission lines that became highways of communication. This was a big advance, greatly reducing the cost and increasing the amount of long distance traffic. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Report of Advances in Microwave Theory and Techniques-1956

    Publication Year: 1957 , Page(s): 83 - 91
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1201 KB)  

    Microwave theory and techniques include the transmission, control, and measurement of waves of centimeter or millimeter length. The methods applicable in this region differ sufficiently from those at lower frequency to constitute a rather well-defined discipline. This area is the subject of our review. Several subjects contiguous to the microwave domain are excluded. Thus, antenna and propagation problems do not exhibit so clearcut a change with wavelength, and are mentioned only indirectly. The electronic aspects of microwave generators are also omitted, although much work on the circuits for these generators is necessarily included. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Coupled Strip Transmission Lines with Rectangular Inner Conductors

    Publication Year: 1957 , Page(s): 92 - 99
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (697 KB)  

    A method is presented for determining the capacitance of electrostatic fields which have hitherto proved intractable because their solutions required the evaluation of hyperelliptic integrals. The method is illustrated by applying it to the determination of the characteristic impedance of a strip transmission line. The results compare favorably with the results of existing solutions. The method is then used to determine the characteristic impedance of coupled strip transmission lines with inner conductors of rectangular shape. Curves are included which permit the determination of this impedance over a wide range of line proportions. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Impedance of a Wire Grid Parallel to a Dielectric Interface

    Publication Year: 1957 , Page(s): 99 - 102
    Cited by:  Papers (16)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (372 KB)  

    Analysis is given for the problem of reflection of a plane wave at oblique incidence on a wire grid which is parallel to a plane interface between two homogeneous dielectrics. It is assumed that the wire grid is a periodic structure and consists of thin cylindrical wires of homogeneous material. The equivalent circuit is derived where it is shown that the space on either side of the interface can by a transmission line, and the grid itself is represented by a pure shunt element across one of the lines. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Semicircular Ridges in Rectangular Waveguides

    Publication Year: 1957 , Page(s): 103 - 106
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (394 KB)  

    The two-dimensional Hehnholtz equation is solved in a rectangle having two semicircular projections in the center of its broad faces. More particularly, the lowest two eigenvalues are determined for Nenmann's boundary condition, and the lowest eigenvalue for Dirichlet's boundary condition. The results are of interest in various fields of physics, such as vibrations of a membrane, but are of particular importance in the study of waveguide propagation. The latter application is stressed in the article, in accordance with the practical, importance of ridged waveguides. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Synthesis of a Class of Microwave Filters

    Publication Year: 1957 , Page(s): 107 - 114
    Cited by:  Papers (10)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (708 KB)  

    This paper deals with the development of a new model for a class of microwave filters. With this model one can reproduce and systematize from a general viewpoint results now in the literature. Its most prominent feature, however, is that the use of the model permits the development of a synthesis procedure for the wide-band filter. From this single model a wide variety of structural realizations are readily obtained. Designs employing this model, and the appropriate synthesis, show significant improvement of desired characteristics over conventional designs. The general multiple quarter wave matching transformer problem is also discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single Slab Arbitrary Polarization Surface Wave Structure

    Publication Year: 1957 , Page(s): 115 - 120
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (618 KB)  

    A single grounded dielectric slab can support either TM or TE modes, but cannot propagate both with the same velocity. This paper concerns a modification of the single slab which enables either polarization to propagate with the same velocity. Such a structure could transmit a circularly polarized wave, and would be useful in transmission, feeder, and antenna applications. The structure consists of a grounded dielectric slab with parallel metal plates imbedded in the dielectric, normal to and in contact with the ground plane. The plates do not reach the top of the slab. Propagation is along the plates, whereas corrugated surfaces propagate across the vanes. For small plate thickness, the TE field is undisturbed; hence, the entire slab thickness controls the velocity. The TM field, however, has an electric field component parallel to the plates, which is shorted out by the plates; thus, only the thickness of slab above the plates controls this mode, and the two modes can be independently controlled. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Effects of Reflections from Randomly Spaced Discontinuities in Transmission Lines

    Publication Year: 1957 , Page(s): 121 - 126
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (569 KB)  

    Reflections from randomly spaced transmission line discontinuities can cause serious attenuation and distortion of pulses in the lines, and the presence of reflections at the sending end may be undesirable. The effect of these discontinuities may be described in terms of the mathematics for combining outputs from oscillators with random frequencies. The location of the discontinuity corresponds to the frequency of an oscillator. The phase constant of the transmission line is analogous to time for the oscillators. Use of spectrum and filter analogies permits approximate determination of discontinuity locations from measurements. Use of known space and size distributions permits statistical prediction of attenuation and of size of reflected wave at the sending end. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Statistical Prediction of Voltage Standing-Wave Ratio

    Publication Year: 1957 , Page(s): 127 - 130
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (350 KB)  

    The problem ot predicting the probability distribution of vswr for many randomly spaced discontinuities is solved using the "central limit theorem." Assuming that reflection factors add in the complex plane and using the "central limit theorem" the result is shown to be a Rayleigh distribution in terms of the reflection factor. The probability of the vswr over a band of frequencies is calculated using the concept that this band of frequencies can be considered as a number of statistically independent samples. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance of Three-Millimeter Harmonic Generators and Crystal Detectors

    Publication Year: 1957 , Page(s): 131 - 135
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (571 KB)  

    Because of growing applications of millimeter wave measurements, a fairly thorough investigation of what could be expected from sources and detectors in the 3 mm region was made. The sources consisted of fourth-harmonic generators from a 1.25 cm fundamental. A type of crystal holder for both harmonic generators and detectors in which a small crystal wafer is positioned in the broad wall of the millimeter waveguide, being contacted by a whisker passing across the waveguide (the open-guide type) was found to be superior in general to units using crystal cartridges or modifications thereof. Factors affecting the performance of these units have been investigated statistically. It was found that the short-circuit current sensitivity in microamperes per microwatt of a good crystal detector of the type described above is not greatly less than the value for crystals at lower microwave frequencies, so that the minimum detectable signal is about the same. As an additional result, evidence for art important effect in which the harmonic generation process degrades the signal-to-noise ratio of the source is presented and discussed. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Circularly Polarized Microwave Cavity Filters

    Publication Year: 1957 , Page(s): 136 - 147
    Cited by:  Papers (11)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1098 KB)  

    A new group of circularly polarized microwave cavity filters is described. With a single circularly polarized cavity, a reflectionless filter is achieved that couples nearly 100 per cent of the energy from the main waveguide at the cavity resonant frequency. Two degenerate cavity modes may be excited, to produce a circularly polarized field, by coupling to the transverse and longitudinal waveguide magnetic fields or to the transverse electric and magnetic waveguide fields. A theoretical analysis is presented as well as experimental results. The loss between the band-pass terminals of the reflectionless circularly polarized filter is identical with the loss in a conventional reflectiontype band-pass filter with the same bandwidth and cavity-wall losses. The null at resonance between the band-elimination terminals of the reflectionless circularly polarized filter is limited only by the asymmetries of the cavity and not by the cavity-wall losses. Design equations and curves are given for eight of the lower order, circularly cylindrical, degenerate cavity modes that are coupled to a rectangular waveguide at the point of circularly polarized waveguide magnetic fields. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reference Cavity Design Considerations

    Publication Year: 1957 , Page(s): 148 - 152
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (471 KB)  

    The design problems in a reference cavity include coupling, cavity Q, temperature compensation, stability, and hysteresis. Temperature compensation is shown to be a problem in second order compensation theory and is solved by material changes. Stability is achieved by novel mechanical design and by elimination of hysteresis producing members. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Relationship of Physical Applications of Fourier Transforms in Various Fields of Wave Theory and Circuitry

    Publication Year: 1957 , Page(s): 153 - 158
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (583 KB)  

    A procedure is presented for connecting some known physical applications of Fourier transform pairs in different branches of the theory of waves and circuitry. After an investigation of the cases of diffraction, reflection, and coupling of waves, deflection of particles (which includes the cathode-ray-tube case and so-called gap effect) and the closely related scanning problem are examined. Finally, extension to random functions is discussed briefly. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Variant in the Measurement of Two-Port Junctions

    Publication Year: 1957 , Page(s): 159 - 161
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (314 KB)  

    Projective constructions are described for deducing the iconocenter of a two-port junction from input reflection coefficient measurements taken with a short circuit placed in various positions in the output waveguide. The wavelength in the ouput line is deduced from a four-point measurement. If this wavelength is known in advance, a three-point measurement gives all the information needed to construct the iconocenter. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • WESCON Papers' Deadline Set for May 1 (Correspondence)

    Publication Year: 1957 , Page(s): 161
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (133 KB)  

    Authors wishing to present papers at the 1957 WESCON Convention to be held in San Francisco, Calif., on August 20-23 should send 100-200 word abstracts, together with complete texts or additional detailed summaries, to the Technical Program Chairman, D. A. Watkins, Stanford Electronics Laboratories, Stanford University, Stanford, Calif., for consideration by the Technical Program Committee. Authors will be notified whether or not their papers have been accepted by June 1. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Matching the Sides of a Parallel-Plate Region (Correspondence)

    Publication Year: 1957 , Page(s): 161 - 162
    Cited by:  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (133 KB)  

    One of the simplest forms of electromagnetic wave is a TEM wave propagating between parallel conducting planes which extend laterally to infinity. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The IRE "Affiliate" Plan--A New Venture in Engineering Society Structure and Service (Correspondence)

    Publication Year: 1957 , Page(s): 161
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (252 KB)  

    On January 4, 1957, the IRE Board of Directors arrived at a decision which may in time prove to be one of the most far-reaching in its 45-year history. On that date the Board adopted a plan which will enable non-IRE members whose main professional interests lie outside the sphere of IRE activities to become affiliated with certain of the IRE Professional Groups without first having to join the IRE itself. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Corrections

    Publication Year: 1957 , Page(s): 162
    Save to Project icon | Request Permissions | PDF file iconPDF (124 KB)  
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Miniature Waveguide Flanges Unpressurized Contact Type (Correspondence)

    Publication Year: 1957 , Page(s): 162
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (124 KB)  

    I would like to call attention to the fact that RETMA Standard RS-166 with the above title and dated October, 1956, has been released. Copies of the Standard can be obtained through the Engineering Department of the RETMA, 11 West 42nd Street, New York 36, N. Y. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Method of Analysis of Symmetrical Four-Port Networks (Correspondence)

    Publication Year: 1957 , Page(s): 162 - 163
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (123 KB)  

    The following errors appeared in the above article. On page 248 the C term in the matrix for Fig. 11 should be j(-a²c²+2ac+a²-1). Also, on page 249 the term for T+- for the rat race ring should be T+- = -j/spl radic//bar 2/. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Low VSWR Matching Technique (Correspondence and Authors' Reply)

    Publication Year: 1957 , Page(s): 163
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (138 KB)  

    I would like to call your attention to a certain error in the above correspondence. The admittance function plotted by the author on the Smith chart winds counter-clockwise. This is contrary to the laws of nature for passive linear networks. These laws prescribed that the plot of the admittance function wind clockwise from the low to the high frequency. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

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

Full Aims & Scope