IEEE Transactions on Microwave Theory and Techniques

Volume 24 Issue 11 • Nov. 1976

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Displaying Results 1 - 25 of 49
  • [Back cover]

    Publication Year: 1976, Page(s):b3 - b4
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  • [Front cover]

    Publication Year: 1976, Page(s):f1 - f2
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  • Highly Reliable High-Power 86-GHz Components and Transmitter - Receiver Modules

    Publication Year: 1976, Page(s):693 - 701
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB)

    The reliability of semiconductor active devices is related to the junction temperature of diodes used. This paper describes the reliability design and performance of 86-GHz active components and transmitter-receiver modules for a guided millimeter-wave transmission system. The components are IMPATT oscillators, IMPATT amplifiers, varactor frequency multipliers, and Schottky-barrier diode upconvert... View full abstract»

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  • A Compact 60-GHz Transmitter - Receiver

    Publication Year: 1976, Page(s):794 - 797
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (541 KB)

    A new, compact, low-cost, and reliable 60-GHz transmitier-receiver was developed for civilian use. Common components are used for transmitting and receiving functions. An IMPATT oscillator generates the millimeter-wave output power for both the transmitter and the receiver local oscillator. A common antenna is also used for transmitting and receiving signals without a circulator. A mixer is used a... View full abstract»

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  • Dielectric Waveguide Microwave Integrated Circuits - An Overview

    Publication Year: 1976, Page(s):806 - 814
    Cited by:  Papers (78)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1287 KB)

    An integrated circuit technique for microwave and millimeter wavelengths which uses refractive-type waveguides and signal processing coupled with planar integration techniques characteristic of microstrip microwave integrated circuits (MIC's) is described. Following a comparison of the optical and millimeter approaches to this circuit technique, a discussion of transmission lines and components fo... View full abstract»

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  • Contributors, Nov. 1976

    Publication Year: 1976, Page(s):888 - 895
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  • Annals of the IEEE coupon [advertisement]

    Publication Year: 1976, Page(s):b1 - b4
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  • Low-Loss Broad-Band EHF Circulator (Short Papers)

    Publication Year: 1976, Page(s):863 - 866
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    A waveguide circulator design is reported that has resulted in a structurally rugged, thermally stable circulator with exceptional RF performance. With this design, insertion loss of less than 0.1 dB, more than 2MB isolation, and VSWR less than 1.2:1 have been achieved, each over 7 GHz of bandwidth from 27 to 34 GHz and 31 to 38 GHz. View full abstract»

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  • High-Efficiency Frequency Multiplication with GaAs Avalanche Diodes (Short Papers)

    Publication Year: 1976, Page(s):861 - 863
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    GaAs avalanche diodes for frequency multiplication at millimeter wavelengths have been investigated. The GaAs diode design is described and compared with that of Si diodes. Experimental results obtained in the optimum circuit are presented. Frequency multiplication from 4 to 32 GHz with 6-dB conversion loss (400 to 100 mW) and 1.5-W dc bias power was achieved. A temperature dependence of the outpu... View full abstract»

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  • A Tunable Bandpass Ring Filter for Rectangular Dielectric Waveguide Integrated Circuits (Short Papers)

    Publication Year: 1976, Page(s):875 - 876
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Dielectric waveguide structures have received renewed interest in recent years for application at millimeter wavelengths. A number of passive and active microwave devices in the dielectric waveguide technologies have been recently developed. This short paper describes a method for providing continuous mechanical tuning of a resonant dielectric ring filter for use with rectangular dielectric wavegu... View full abstract»

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  • The Challenge of Astronomy to Millimeter-Wave Technology

    Publication Year: 1976, Page(s):709 - 711
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The inseparability of pure and applied science, or the synergy between scientific discovery and technological advance, has already been well illustrated in the field of radio astronomy. Recent astronomical discoveries in the millimeter range, and what can he expected to emerge from the far-infrared region, make further technological developments in these relatively unexploited areas of great inter... View full abstract»

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  • Inverted Strip Dielectric Waveguide for Millimeter-Wave Integrated Circuits

    Publication Year: 1976, Page(s):821 - 827
    Cited by:  Papers (98)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB)

    A new type of dielectric waveguide, which has a number of advantages over other previously available waveguide structures for millimeter-wave integrated circuits, is described. Dispersion characteristics and the field distributions in the waveguide are calculated using the concept of effective dielectric constant. Field distributions have been measured in the 80-GHz range in order to check the acc... View full abstract»

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  • A V-Band Communication Transmitter and Receiver System Using Dielectric Waveguide Integrated Circuits

    Publication Year: 1976, Page(s):797 - 803
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1184 KB)

    A V-band communication transmitter and receiver is described. Both units make extensive use of passive microwave components fabricated rising millimeter-wave insular line integrated circuits (MILIC's). These components consist of rectangular dielectric rod antennas, a MILIC ferrite isolator, a bandpass ring filter, a directional coupler, and sections of dielectric insular waveguide. The passive in... View full abstract»

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  • A 230-GHz Radiometer System Employing a Second-Harmonic Mixer (Short Papers)

    Publication Year: 1976, Page(s):859 - 861
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A radiometer system for use in the lambda ~ 1.3 mm (v ~ 230 GHz) region has been constructed and used for radio astronomical observations. A second-harmonic mixer employing a single Schottky diode downconverts the incident power to an IF frequency of -1400 MHz. The measured double-sideband system noise temperature is 6000 K (noise figure = 13 dB) and the double-sideband mixer conversion loss is ca... View full abstract»

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  • A Low-Noise Millimeter MIC Mixer (Short Papers)

    Publication Year: 1976, Page(s):867 - 869
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    This short paper describes a Ka-band integrated circuit mixer which, when integrated with a 2.5-dB-noise-figure IF amplifier, yields a 6-d13 double-sideband noise figure over the band 36.5-38.5 GHz. A readily machinable low dielectric constant substrate has been utilized. View full abstract»

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  • Traveling-Wave Masers for Radio Astronomy in the Frequency Range 20-40 GHz

    Publication Year: 1976, Page(s):718 - 725
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (816 KB)

    Tunable rutile traveling-wave masers (TWM's) have been developed for the frequency ranges 20-25 GHz and 29-35 GHz. Operating data for iron-doped rutile are given and the optimum concentration of iron has been determined. A new type of dielectric image line slow-wave structure (SWS), particularly useful in the frequency range 10-50 GHz, is used in two of the masers. This SWS is found superior to th... View full abstract»

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  • 80-GHz-Band Low-Loss Ring-Type Channel Diplexer Using a Semicircular Electric Mode

    Publication Year: 1976, Page(s):831 - 836
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    A low-loss ring-type channel diplexer consisting of two deformed ring cavities, three directional couplers, a TE01 mode semicircular waveguide for the through channels, and a TE10 mode rectangular waveguide for the dropped channel, has been developed as a channel-dropping filter for a millimeter-wave channel multiplexing network. The structure and experimental results of the ... View full abstract»

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  • Foreword, Nov. 1976

    Publication Year: 1976, Page(s):683 - 684
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    For more than a quarter of a century, engineers and scientists have been challenging the frontier of microwave technology with the prospect of extending it into millimeter-wave systems applications. The progress toward this goal had been relatively slow. In recent years, however, a significantly increased effort has been directed toward the development of various solid-state devices for use at mil... View full abstract»

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  • E-Type Modes in Cylindrical Dielectric Waveguides with Periodic Boundary Perturbations (Short Papers)

    Publication Year: 1976, Page(s):872 - 875
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    A general method for the analysis of the effects of periodic boundary perturbations on E-type modes of dielectric waveguides (DW's) is presented. The method is applied to hollow cylindrical dielectric waveguide (HCDW), and numerical solutions for surface wave and radiation mode intensities are given. View full abstract»

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  • High-Power 50-GHz Double-Drift-Region IMPATT Oscillators with Improved Bias Circuits for Eliminating Low-Frequency Instabilities

    Publication Year: 1976, Page(s):731 - 737
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    Low-frequency instabilities in millimeter-wave double-drift-region (DDR) IMPATT diodes are investigated and new oscillator circuits with the improved bias circuits for eliminating the low-frequency instability are developed. DDR IMPATT diodes mounted in these circuits exhibited a maximum free-running oscillation power of 1.6 W at 55.5 GHz with 11.5-percent conversion efficiency. A highly stabilize... View full abstract»

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  • A Low-Noise 47-GHz Mixer Using a Permanent Josephson Junction

    Publication Year: 1976, Page(s):706 - 709
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (672 KB)

    A new method to produce permanent Josephson junctions for millimeter-wave mixers is reported. In contrast to conventional point contacts which are mechanically unstable and require adjustments after each cooldown, these point contact junctions are set at room temperature, stay mechanically stable, and can be temperature cycled without readjustments. Using these junctions in a modified Sharpless wa... View full abstract»

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  • InP Gunn-Effect Devices for Millimeter-Wave Amplifiers and Oscillators

    Publication Year: 1976, Page(s):775 - 780
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (704 KB)

    CW InP Gunn oscillator performance has been extended up in frequency to the 26.5-40 and 50-75-GHz ranges. CW power outputs of 78 mW at 56 GHz have been attained to date. Amplifier evaluation in Ku band yielded useful gain from 26.5 to 40 GHz in two half-band circuits with noise figures ranging from 12.4 to 16.5 dB on flat profile devices. In a narrow-band amplifier circuit at 23 GHz, a device nois... View full abstract»

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  • Measurement of Guide Wavelength in Rectangular Dielectric Waveguide

    Publication Year: 1976, Page(s):815 - 820
    Cited by:  Papers (25)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Oscillators in the microwave and millimeter-wave region were constructed wherein the resonators consisted of sections of rectangular dielectric waveguide. While adding thin blocks of dielectric to increase the mechanical length of the resonator, the power output and frequency were measured. Using this technique, the experimental value of the wavelength in the longitudinal direction, lambdag View full abstract»

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  • Millimeter-Wave IMPATT Power Amplifier/Combiner

    Publication Year: 1976, Page(s):758 - 767
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1312 KB)

    The development of a two-stage millimeter-wave IMPATT power amplifier/combiner is described herein. The driver stage consists of a two-diode hybrid-coupled amplifier and the output stage consists of a four-diode combiner (a pair of hybrid-coupled amplifiers). An output power of 1 W was achieved with a 22-dB small-signal gain and a 6-GHz bandwidth in the 60-GHz range. Design considerations and expe... View full abstract»

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  • 200-GHz 50-mW CW Oscillation with Silicon SDR IMPATT (Short Papers)

    Publication Year: 1976, Page(s):858 - 859
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    Silicoin SDR IMPATT diodes have been operated continuously in 200- and 300-GHz bands. A p+-n junction structure was formed by thermal diffusion of boron and ion implantation of phosphorus ions. CW output power of 50 mW was obtained at 202 GHz with 1.3-percent conversion efficiency. At 301-GHz CW output power of 1.2 MW was observed. 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..

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Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt