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IEEE Transactions on Microwave Theory and Techniques

Issue 4 • Date July 1963

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Displaying Results 1 - 17 of 17
  • [Front cover: July 1963]

    Publication Year: 1963, Page(s):f1 - f2
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    Freely Available from IEEE
  • [Table of contents: July 1963]

    Publication Year: 1963, Page(s): 221
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  • On The General Relation Between /spl alpha/ and Q (Correspondence)

    Publication Year: 1963, Page(s): 258
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (98 KB)

    The relation between the quality factor Q and the attenuation constant /spl alpha/ of a transmission line has been known as follows: /spl alpha/ = /spl beta/ / /2Q where /spl beta/ is the phase constant. Recently from the following relation of propagation constant at resonance /spl Gamma/(/spl omega//sub 0/) + /spl part//spl Gamma/ / /spl part//spl omega/ /spl Delta//spl omega//spl cong/ i/spl bet... View full abstract»

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  • The Synthesis of N-Port Circulators (Correspondence)

    Publication Year: 1963, Page(s): 263
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (138 KB)

    Professor P. Penfield has kindly brought to our notice his paper on lossless three-ports, which independently covers some of the work described by us. He has pointed out that for circulator synthesis from a three-port junction only one of the three conditions of equation (16) or (17) need be specified. This can be seen from the first two equations of (9) of our paper. Otherwise our classifications... View full abstract»

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  • Contributors July,1963

    Publication Year: 1963, Page(s):265 - 266
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  • Frequency Response of Strip-line Traveling-Wave Directional Filters (Correspondence)

    Publication Year: 1963, Page(s):264 - 265
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Coale analyzed the single resonator strip-line traveling-wave filter shown in Fig. 1 by a perturbation method. Design criteria were formulated relating loaded Q to pertinent circuit parameters. Experimentally it is observed that properly aligned filters exhibit a frequency response which is approximately Butterworth. The purpose of this communication is to show that the approximate frequency respo... View full abstract»

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  • Broad-Band Microwave Discriminator (Correspondence)

    Publication Year: 1963, Page(s):263 - 264
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A sketch of a novel broad-band microwave discriminator is shown in Fig. 1. The device utilizes a pair of symmetric 3-db hybrids joined by unequal lengths of transmission line. The difference between line lengths is represented as a frequency dependent phase difference φ. View full abstract»

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  • Dielectric Constant Ferrites and Loss Tangent of Microwave at Elevated Temperatures

    Publication Year: 1963, Page(s):222 - 226
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Experimental data are given on the effect of elevated temperature on the dielectric properties of ferrites intended for microwave applications. Measurements were made at X band. The real part of the dielectric constant generally increases slowly with temperature, the maximum temperature coefficient observed being 300 parts per million per degree C. The dielectric loss tangent also generally increa... View full abstract»

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  • The Re-Entrant Cross Section and Wide-Band 3-db Hybrid Couplers

    Publication Year: 1963, Page(s):254 - 258
    Cited by:  Papers (46)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    A new type of parallel-coupled TEM-mode cross section is described and named the re-entrant cross section. An analysis of the even- and odd-mode characteristic impedances of the re-entrant cross section shows it to have advantages in the case of tight coupling when compared to previously used parallel-strip cross sections. Close tolerances are easily held, and considerable misalignment is permissi... View full abstract»

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  • Extension of The Laser-Pumped Ruby Maser to Millimeter Wavelengths

    Publication Year: 1963, Page(s):251 - 254
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A brief description is given on the operation of a microwave ruby maser in which the pump signal is the optical emission of a ruby laser. For operation in the millimeter spectrum the application of a magnetic field of inordinately high intensity can produce Zeeman splitting of the Cr3+ levels at millimeter wave energy in the ground state in ruby. To obtain population inversion by optica... View full abstract»

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  • On the Measurement of Detector Impedance (Correspondence)

    Publication Year: 1963, Page(s): 263
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    A detector or receiver may be used in conjunction with a directional coupler and a calibrated variable short to measure its own impedance. The observed VSWR as the short is adjusted is the VSWR of the detector if the coupling is light. Various minor corrections are described. View full abstract»

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  • General Synthesis of Asymmetric Multi-Element Coupled-Transmission-Line Directional Couplers

    Publication Year: 1963, Page(s):226 - 237
    Cited by:  Papers (68)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1160 KB)

    An exact synthesis procedure is derived for a class of asymmetric multielement coupled-transmission-line directional couplers with any number of elements. It is based on the equivalence between the theory of the directional coupler and that of a stepped quarter-wavelength filter. This can be treated using Richards' theorem for the synthesis of transmission-line distributed networks, as described p... View full abstract»

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  • Scattering of Unidirectional Surface Waves

    Publication Year: 1963, Page(s):238 - 243
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A perfectly conducting plane screen embedded in a gyrotropic medium is shown to be able to support a unidirectional surface wave. Such a surface wave is assumed to be incident on the top of a semi-infinite screen. At the edge the incident power is converted partly into a reflected surface wave which travels on the bottom of the screen and partly into a space wave. The angular distribution of the r... View full abstract»

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  • A Varactor Frequency-Modulated AFC Reference Cavity (Correspondence)

    Publication Year: 1963, Page(s):258 - 260
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A varactor frequency-modulated microwave cavity is described where the application of a periodic square wave voltage to a varactor serves to electronically detune the cavity. There results a discriminator characteristic which makes the device applicable as an AFC reference. Experimental results are given and discussed. View full abstract»

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  • Attenuation Constant of Lunar Line and T-Septate Lunar Line

    Publication Year: 1963, Page(s):243 - 250
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The attenuation constant α of the lunar line and that of the T-septate lunar line were derived from the average power loss WL and the average power transfer WT in each line, that is the ratio, WL/2WT. The average power loss and the average power transfer for the lunar line and for the T-septate lunar line were derived from their respective field fu... View full abstract»

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  • Nonlinear Biasing Resistors for Microwave Tunnel-Diode Oscillators (Correspondence)

    Publication Year: 1963, Page(s):260 - 262
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    By using a nonlinear rather than a linear stabilizing resistor in tunnel-diode oscillator and amplifier circuits, the dc power dissipation in the resistor may be reduced by a factor of 3 for typical germanium tunnel diodes, and by a factor of 6 for typical gallium arsenide tunnel diodes. At the same time ac loading by the resistor is reduced. Such nonlinear stabilizing resistors may consist of rev... View full abstract»

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  • Mode Cutoff Frequencies In Screened Dielectric Rod Waveguide (Correspondence)

    Publication Year: 1963, Page(s):262 - 263
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    The geometry of the screened dielectric rod waveguide is shown in Fig. 1. The theory for this waveguide has been solved by Beam and Wachowski for the case of μ1= μ2 = 1. View full abstract»

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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..

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