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IEEE Transactions on Microwave Theory and Techniques

Issue 3 • Date Mar. 1982

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Displaying Results 1 - 15 of 15
  • [Front cover - Mar. 1982 Transactions]

    Publication Year: 1982, Page(s):f1 - f2
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    Freely Available from IEEE
  • Analysis of the Symmetrical Modes for an Eccentrically Cladded Fiber

    Publication Year: 1982, Page(s):217 - 220
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (379 KB)

    This paper examines the core and the cladding modes of an eccentrically cladded three-layer dielectric waveguide. The solutions are specialized to small eccentricities, and exact closed-form expressions for the normalized deviations of the cutoff wavenumbers from those of the concentric case are determined. Numerical results for the symmetrical cladding modes of the fiber are given. View full abstract»

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  • Ridged Waveguides for Ultra-Broad-Band Light Modulators

    Publication Year: 1982, Page(s):220 - 226
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (770 KB)

    The electromagnetic field of the dominant mode propagating in the inhomogeneously dielectrically loaded double ridged waveguide is given in terms of a modal series expansion. The numerical evaluation of the propagation constant reveals a remarkably linear dispersion diagram in close agreement with measurements performed in the 8-40-GHz range. Based on this analysis, the bandwidth of a ridged waveg... View full abstract»

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  • Integrated Balanced BPSK and QPSK Modulators for the Ka-Band

    Publication Year: 1982, Page(s):227 - 234
    Cited by:  Papers (30)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1508 KB)

    Microwave integrated circuit (MIC) balanced biphase-shift-keying (BPSK) and quadri-phase-shift-keying (QPSK) modulators have been achieved in the 27-GHz band. The modulators are fabricated using a combination of microstrip lines and slot lines, viz., tow-sided MIC. The diodes used are beam-lean Schottky-barrier diodes. Balanced BPSK modulation is performed by path-switching and mode transformation... View full abstract»

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  • A 26-GHz Miniaturized Mic Transmitter/Receiver

    Publication Year: 1982, Page(s):235 - 242
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB)

    A very compact 26-GHz transmitter/receiver for high-speed digital radio subscriber systems has been developed. The transmitter/receiver makes extensive use of MIC technology in the RF sections. Transmitting power of 18 dBm and a receiving noise figure of less than 12 dB is obtained. The freqnency of the local oscillator is stabilized to within +-100 ppm by means of a high-Q dielectric resonator. T... View full abstract»

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  • Microwave Wide-Band Model of GaAs Dual Gate MESFET's

    Publication Year: 1982, Page(s):243 - 251
    Cited by:  Papers (40)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (797 KB)

    A multioctave model of GaAs dual gate MESFET's is presented. It consists of 28 frequency independent elements and is valid between 2 and 11 GHz. Dual gate FET's with and without intergate ohmic contact have been considered. The modeling method utilized consists in separate dc and HF characterization and equivalent circuit determination of the active device parts in their actual bias conditions. Th... View full abstract»

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  • Numerical Analysis of Nonlinear Solid-State Device Excitation in Microwave Circuits

    Publication Year: 1982, Page(s):251 - 259
    Cited by:  Papers (48)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    This paper presents an efficient technique for the numerical determination of voltage and current waveforms when a microwave circuit containing one or more nonlinear elements is excited by a single frequency source. The approach described here is readily applied to microwave networks represented by a large number of equivalent circuit elements, either lumped or distributed. A significant feature o... View full abstract»

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  • Harmonic Power Combining Of Microwave Solid-State Active Devices

    Publication Year: 1982, Page(s):260 - 268
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    A method for combining the power in a selected harmonic of the fundamental frequency for a symmetrical array of oscillating solid-state devices is described and demonstrated. These combiners convert fundamental power to harmonic power with filtering accomplished by symmetry. This technique appears useful for improving the performance of microwave and millimeter-wave power sources by effectively en... View full abstract»

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  • Symmetrical Combiner Analysis Using S-Parameters

    Publication Year: 1982, Page(s):268 - 277
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1526 KB)

    A general theory is developed to predict the potential efficiency (eta) and input impedance ( Z ic) of symmetrical N-way combining networks in terms of scattering parameters. A simplified version of the theory, assuming perfect symmetry, is then implemented on a semiautomatic network analyzer (SANA) which is used to characterize 2-way and 16-way TM 010 combining networks. Th... View full abstract»

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  • TE /sub 11/ to HE /sub11/ Cylindrical Waveguide Mode Converters Using Ring-Loaded Slots

    Publication Year: 1982, Page(s):278 - 285
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (825 KB)

    A theoretical parameter study is given of a TE 11 to HE 11 mode converter consisting of a section of cylindrical corrugated waveguide with ring-loaded slots. The analysis, using modal field-matching techniques to determine the scatter matrix of the converter, allows the return loss to be computed accurately. For a wide range of waveguide sizes it is shown that a bandwidth rat... View full abstract»

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  • Measurement of the Dielectric Constant and Loss Tangent of Thallium Mixed Halide Crystals KRS-5 and KRS-6 at 95 GHz

    Publication Year: 1982, Page(s):286 - 292
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (838 KB)

    The dielectric constants and loss tangents of KRS-5 and KRS-6 thallium halide mixed crystals have been measured at 95 GHz using both the shorted waveguide (SWG) reflection method and the Fabry-Perot (F-P) transmission method on samples filling standard WR-10 waveguide. The results--KRS-5: epsilon' r = 31; tan delta = 1.8 x 10 -2; KRS-6: epsilon' r = 29, tan delta =... View full abstract»

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  • A More Accurate Model of the TE/sub10/ Type Waveguide Mode in Suspended Substrate

    Publication Year: 1982, Page(s):293 - 294
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    An analytical model of the suspended substrate transmission Iine which includes the grooves used to support the substrate is presented. The model predicts a lower cutoff frequency of the TE 10 type waveguide mode than that without the grooves. The analysis is confirmed by experiments. View full abstract»

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  • Correction to "Asymptotic High-Frequency Modes of Homogeneous Waveguide Structures With Impedance Boundaries"

    Publication Year: 1982, Page(s): 296
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (91 KB)

    The treatment of Section V in the above paper was incomplete and, as such, a bit misleading. In fact, the existence question for solutions of equation (53) for f/sub 2/ = (pi/sub 2/, m/sub 2/) did not properly take into account the degeneracy of the basic modes f/sub 1/ = (pi/sub 1/, m/sub 1/). It is known that for a solution to exist, the right-hand side of a deterministic equation like (53) must... View full abstract»

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  • Patent abstracts

    Publication Year: 1982, Page(s):297 - 300
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (298 KB)

    These patent abstracts of recently issued patents of interest to microwave engineers are intended to provide the minimum information necessary for readers to detennine if they are interested in examining the patent in more detail. Complete copies of patents are available for a small fee by writing: U.S. Patent and Trademark Office, Box 9, Washington, DC, USA. View full abstract»

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  • [Back cover - Mar. 1982 Transactions]

    Publication Year: 1982, Page(s):b1 - b2
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    Freely Available from IEEE

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..

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Dominique Schreurs
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Jenshan Lin
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