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IEEE Transactions on Microwave Theory and Techniques

Issue 3 • Date Mar. 1975

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Displaying Results 1 - 19 of 19
  • [Front cover - Mar. 1975]

    Publication Year: 1975, Page(s):f1 - f2
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    Freely Available from IEEE
  • Comments from the Editor, Mar. 1975

    Publication Year: 1975, Page(s): 270
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    Freely Available from IEEE
  • Contributors, Mar. 1975

    Publication Year: 1975, Page(s):323 - 324
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1975, Page(s):b1 - b2
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    Freely Available from IEEE
  • Measurement of the Electromagnetic-Field Components in a Rectangular Drift Tube-Loaded Cavity Using Various Perturbing Objects (Short Papers)

    Publication Year: 1975, Page(s):319 - 320
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The electric-field quantities E, Ey, Ez, and the magnetic-field quantities H and Hx in a rectangular drift tube-loaded cavity resonating in the TE101 mode have been measured along the z direction by means of the perturbation method using a dielectric bead, a metallic disk, a metallic needle, a metallic sphere, and a ferrite disk. The relative errors for ... View full abstract»

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  • Slotted Line Measurements for Propagation Constant in Lossy Waveguide (Short Papers)

    Publication Year: 1975, Page(s):317 - 319
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The propagation coefficient in a slotted waveguide partially loaded with a lossy dielectric can be determined accurately, in terms of the measured standing-wave pattern, by means of a computer program solving a set of transcendental equations. This determination is a necessary step in a permittivity measurement technique which was recently proposed by several authors. View full abstract»

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  • Behavioral Suppression by 383-MHz Radiation (Short Papers)

    Publication Year: 1975, Page(s):313 - 316
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The heads of two rhesus monkeys were irradiated in a 383-MHz resonant cavity immediately before and during performance of a four-choice forced-choice serial reaction task. CW radiation at integral dose rates of 0.001 -17.5 W were delivered to the head. No effects were observed below a critical dose level (≈23 W/kg) derived from integral dose rate and body mass. Above this level, behavioral s... View full abstract»

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  • Laser Fiber Coupling with a Hyperbolic Lens (Short Papers)

    Publication Year: 1975, Page(s):309 - 311
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Substantial improvements in the coupling efficiency from injection lasers to multimode glass fibers have been obtained by spherical lenses melted on the fiber ends. However, the spherical lens has its own drawbacks. It excites high-order modes which are slow and Iossy and it becomes less effective when used with graded index fibers such as Selfoc. This paper proposes a hyperbolic lens which, in pr... View full abstract»

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  • Computer Analysis of Short-Boundary Planar Circuits

    Publication Year: 1975, Page(s):299 - 306
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    A method of computer analysis of planar (two-dimensional) circuits having an arbitrarily shaped short boundary is proposed. The proposed method is based upon the contour integral representation of the two-dimensional wave equation. Results of the computer analyses for simple circuits are compared with analytical solutions to show the validlty and accuracy of the proposed method. Some examples of a... View full abstract»

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  • Editor's Note, Mar. 1975

    Publication Year: 1975, Page(s): 269
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (45 KB)

    Beginning with the February 1975 issue, Dr. Don Parker is the Editor of the IEEE Transactions on Microwave Theory and Techniques. Dr. Parker is well known to the MTT community through his technical contributions, his long-standing involvement with MTT Symposia, and as a member of AdCom. I heartily welcome him to his new post and wish him well, knowing that the TRANSACTIONS is in good hands. View full abstract»

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  • In-Line Signal Circuit for Broad-Band Parametric Amplifiers

    Publication Year: 1975, Page(s):282 - 287
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (824 KB)

    A new double-tuned parametric amplifier signal-circuit configuration and a method for its experimental optimization is described. A new in-line signal circuit, which is adapted from a quarter-wave-coupled bandpass filter, is intended for use at higher microwave and millimeter-wave parametric amplifiers (paramps). It is shown that, using this signal circuit, a broader flat-gain response can be obta... View full abstract»

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  • A New Type of Isolator Using the Edge-Guided Mode (Letters)

    Publication Year: 1975, Page(s): 321
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (96 KB)

    Experirnents on a new edge-guided mode isolator are reported. In this isolator, one edge of a wide strip is shorted to the ground, and no lossy electrical materials are used. Large isolation and small insertion losses were obtained. View full abstract»

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  • The Double-Swept-Frequency Locating Reflectometer (Short Papers)

    Publication Year: 1975, Page(s):316 - 317
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A swept-frequency-type reflectometer is newly developed which is capable of measuring the distances to the reflection locations and reflection magnitudes in the coaxial line or waveguide, using a double-swept-frequency (DSF) source and a bandpass filter. The principle of this reflectometer and experimental results obtained at 2 GHz are given. View full abstract»

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  • RF Cavity Irradiation Dosimetry (Short Papers)

    Publication Year: 1975, Page(s):311 - 313
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    A right circular cylindrical cavity designed to resonate at 380 MHz was developed to irradiate a monkey head with little or no radio frequency exposure to other tissues. The system is used in studies of the behavioral effects of the absorption of radiant power. Dose-rate measurements were made with an electrically equivalent calorimetric load, consisting of a saline-filled plastic cylinder whose g... View full abstract»

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  • Broad-Band 180° Phase Shift Section in X Band (short Papers)

    Publication Year: 1975, Page(s):307 - 309
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    The use of an interdigitated coupler and a pair of switching circuits composed of appropriate diodes and two-stub matching circuits is experimentally shown to produce a broad-band reflection-type 180° phase shift section operating at 8.50-10.50 GHz with ± 2° error when fabricated using microwave integrated circuit techniques. View full abstract»

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  • Design Data for Radial-Waveguide Circulators Using Partial-Height Ferrite Resonators

    Publication Year: 1975, Page(s):288 - 298
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    This paper derives the eigennetworks of radial-waveguide circulators using partial-height ferrite resonators with n=2 Chebyshev characteristics. To obtain a Chebyshev response with such junctions it is necessary to establish the proper phase angles and admittance levels of the three eigennetworks of the device. This paper derives the phase angles for the eigennetworks but relies on experiments to ... View full abstract»

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  • A Lower Limit on the Interaction Between Symmetrical Odd-Mode Fringing Capacitances (Letters)

    Publication Year: 1975, Page(s):322 - 323
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Let us denote the familiar odd-mode fringing capacitance which is plotted in graphs given by Getsinger by Cf0. It is further defined by Fig. 1(b) in the limit as the magnetic wall tends to infinity on the right. We also denote the corresponding fringing capacitance of the symmetrical coaxial structure of Fig. 1(a) by Cf0. When the dimensions of Fig. 1(a) and (b) are such that... View full abstract»

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  • Harmonically Pumped Stripline Down-Converter

    Publication Year: 1975, Page(s):271 - 275
    Cited by:  Papers (77)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    A novel thin-film down-converter which is pumped at a submultiple of the local-oscillator frequency has given a conversion loss which is comparable to the performance of conventional balanced mixers. The converter consists of two stripline filters and two Schottky-barrier diodes which are shunt mounted in a strip transmission line. The conversion loss measured at a signal frequency of 3.5 GHz is 3... View full abstract»

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  • An Integrated-Circuit Balanced Mixer, Image and Sum Enhanced

    Publication Year: 1975, Page(s):276 - 281
    Cited by:  Papers (33)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    GaAs Schotty-barrier diodes with a zero-bias cutoff frequency of 800 GHz have been used in an integrated-circuit balanced diode mixer operating with a signal frequency centered at 9.3 GHz and a local-oscillator (LO) frequency at 7.8 GHz. For an instantaneous bandwidth of 1.0 GHz, the conversion loss (including all circuits and connector losses) was under 3.15 dB. Over the center 0.5 GHz of the ban... View full abstract»

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Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Dominique Schreurs
Dominique.Schreurs@ieee.org

Editor-in-Chief
Jenshan Lin
jenshan@ieee.org