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Microwave Conference, 1986. 16th European

Date 8-12 Sept. 1986

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Displaying Results 1 - 25 of 135
  • Contents

    Publication Year: 1986, Page(s):nil1 - nil27
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    Freely Available from IEEE
  • "Micrcowaves and Future ESA Programmes"

    Publication Year: 1986, Page(s):3 - 7
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4748 KB)

    Based on the European Space Agency long term plans, the requirements for microwave systems, equipments and components are dicussed in the frame of the eight major programmatic areas: the Earth Space telematics network. View full abstract»

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  • Suspended Substrate Filters and Multiplexers

    Publication Year: 1986, Page(s):8 - 18
    Cited by:  Papers (1)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7652 KB)

    The different configurations which may be used for broadband lowpass and highpass filters will be discussed for applications from 0.5 - 40 GHz. Diplexer design and their application to broadband multiplexers will be considered with examples of practical devices. Due to the limitations of loss, narrow band bandpass and bandstop designs have restricted applications. However, one application in conti... View full abstract»

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  • Millimetre-Wave Atmospheric Propagation and System Implications

    Publication Year: 1986, Page(s):19 - 30
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10111 KB)

    The various factors involved in millimetre-wave atmospheric propagation are reviewed, with more emphasis on the frequency band 30-300 GHz. The following aspects are considered: moist air attenuation, profiling and altitude effects, hydrometeors, turbulence, atmospheric pollution, and system implications. View full abstract»

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  • The Operational Sounding of the Lower Atmosphere from Satellites using Millimetre Waves

    Publication Year: 1986, Page(s):31 - 41
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9370 KB)

    This paper discusses the increasing use of millimetre waves for passive sounding of the lowest 15 km of the atmosphere in support of the forecasting activities of the Meteorological Office. The paper starts with a brief discussion of the spectral features in the 23 to 200 GHz region and how meteorologically useful measurements can be derived. This defines the performance specification of satellite... View full abstract»

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  • Medical Imaging using Microwaves and Ultrasound

    Publication Year: 1986, Page(s):42 - 52
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (12094 KB)

    Based on analogies between microwaves and ultrasonic waves common procedures for medical diagnostic imaging are summarized. Common problems as well as differences between microwaves and ultrasound are pointed out and resulting limitations with respect to this kind of application are discussed. Furthermore, activities in this field are reviewed, corresponding literature is presented. View full abstract»

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  • 64-QAM Digitalization of an Analogue Microwave Radio Network

    Publication Year: 1986, Page(s):53 - 58
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5744 KB)

    With the emergence of new high capacity digital services, new modern digital networks are necessary to satisfy customer applications. However, the task is to provide digital connectivity that gives the best performance at the least cost. One way is accomplish this is to retain as much analogue equipment as possible. The TD-90 system, described here, utilizes existing long distance analogue microwa... View full abstract»

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  • MMICs, Modelling, and CAD-Where do we Go from Here?

    Publication Year: 1986, Page(s):61 - 70
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (8886 KB)

    During the past decade remarkable advances have been made in the integration of microwave circuits on semiconductor chips. This progress could not have taken place without the concomitant advances in the technology of planar circuits, modelling techniques, and computer-aided design (CAD) software. It is evident from developments in the United States and elsewhere that there is an increasing demand... View full abstract»

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  • MMIC Prospects in Microwave Communications

    Publication Year: 1986, Page(s):71 - 82
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    First Page of the Article
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  • U.S. GaAs Digital IC Technology

    Publication Year: 1986, Page(s):83 - 88
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5435 KB)

    GaAs digital IC technology has emerged from the research laboratory and made available for the microwave system designer GaAs foundries for custom ICs and digital components. Successful insertion in future microwave systems requires an understanding of the potential performance and limitations of the technology. This paper presents an overview of the status of U.S. GaAs digital IC technology with ... View full abstract»

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  • Millimeter-Wave Monolithic Integrated Circuits

    Publication Year: 1986, Page(s):89 - 94
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4803 KB)

    This paper summarizes the progress, trends, and technical issues associated with monolithic millimeter-wave integrated circuit technology. Presented first is background information which sets forth a description of the opportunities which spur this activity, and a summary of the important technical challenges. The technical challenges encompass aspects of: semicondutor material growth and processi... View full abstract»

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  • Microwave and Millimeter-Wave Transistor Devices

    Publication Year: 1986, Page(s):97 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9597 KB)

    This paper will review the recent advances in microwave and millimeter-wave, especially above X-band, transistors and monolithic integrated circuits in Japan. GaAs and related-compound semiconductor devices including GaAs MESFETs, GaAs MMICs, two-dimensional electron gas transistors and heterojunction bipolar transistors will be focussed. View full abstract»

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  • Research on Microwave and MM-Wave Passive Devices at Universities

    Publication Year: 1986, Page(s):107 - 112
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    Research activities at Japanese universities are reviewed placing emphasis on transmission lines for integrated circuits, filters and dielectric resonators, couplers and junctions, material constant measurements, and analytical techniques. View full abstract»

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  • Microwave Antenna Technology

    Publication Year: 1986, Page(s):113 - 118
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    Recent microwave antenna technologies which are developed in Japan are reviewed. Main antennas which are practically used in various fields are described. The trends of antenna research works are also shown. View full abstract»

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  • Microwave Propagation Studies

    Publication Year: 1986, Page(s):119 - 124
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6953 KB)

    Present status of microwave propagation research in Japan is presented. Three major fields, i.e. Terrestrial, Earth-space and Mobile propagation are extensively investigated. Multipath and rain effects, two major causes which degrade microwave propagation characteristics and countermeasures to reduce propagation impairments are also studied. Results of these studies are significant for designing n... View full abstract»

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  • A Complete "Multi-Grade Solution" in Coaxial Connections to 50 or 65 GHz

    Publication Year: 1986, Page(s):127 - 132
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    First Page of the Article
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  • A W-Band (75 to 110 GHz) Broadband Microstrip Phase Shifter

    Publication Year: 1986, Page(s):133 - 136
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3850 KB)

    This paper presents the design and performance of a W-band wideband microstrip 11.25-degree. 1-bit phase shifter using PIN diodes and loaded line technique. State-of-the-art results of 0.9± 0.5 dB insertion loss and ±1.3-degree phase error over the 79 to 92-GHz range have been achieved. Only 1.5 mA per diode and O V are required in the forward and reverse bias states, respectively, for optimum i... View full abstract»

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  • Dielectric Resonator Bandpass Filters for Millimetre Wave Applications

    Publication Year: 1986, Page(s):137 - 142
    Cited by:  Papers (1)
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    This paper describes a new bandpass filter for W-band using cylindrical dielectric resonators. With ceramic materials recently available, dielectric resonators become fit for use being a weighty alternative to waveguide cavities or planar microstrip devices even in the millimetre range. Titania with a dielectric constant of 98.2 had been chosen from a variety of materials for the design of a three... View full abstract»

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  • A High Power Millimeter Passive Solid State Limiter

    Publication Year: 1986, Page(s):143 - 148
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5082 KB)

    The design of an array of limiter diodes arranged in series/parallel configuration to form an RF activated control window has enhanced significantly the performance of solid state control components. A monolithic element is formed using high resistivity silicon and fabricated in a beam lead form for easy mounting in a waveguide structure. Key features are high power, low loss and broad band charac... View full abstract»

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  • A 94 GHz High Power Low Loss Junction Circulator

    Publication Year: 1986, Page(s):149 - 153
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    In this paper, the design of a high power W Band junction circulator using monocristalline hexagonal ferrites is described. View full abstract»

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  • High Linearity Upconverter with Ultra Low Distortion Over a Broad Frequency Band for Digital Radio Links

    Publication Year: 1986, Page(s):157 - 163
    Cited by:  Papers (2)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4522 KB)

    Micro-Computer Controlled Mixer (MCCM) will be the keyword for the next generation of highly linear, very low distortion, and, in spite of these contradictory terms, broadband single-sideband upconverters. These components can be used for 64-QAM and 256-QAM modulated digital radio links up to 26 GHz or even more. The concept, design and performance of an 11.2 GHz MCCM using this method will be des... View full abstract»

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  • Multiband overmoded waveguide for high capacity digital radio links using frequency diversity

    Publication Year: 1986, Page(s):164 - 167
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3037 KB)

    A new design allows the use of one single waveguide run to carry 4 and 11 GHz radio link signals simultaneously. High performance diplexers are used at both ends of the waveguide run. Mode suppression allows to use the H10 mode for both frequencies. Lower installation cost and low transmission loss are achieved. View full abstract»

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  • Low Noise Microwave Integrated Receiver for 64 QAM Digital Radio

    Publication Year: 1986, Page(s):168 - 173
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4126 KB)

    64 QAM digital radio requires a very high linear operation not only in the transmitter section, but also in the receiver. The paper presents a low noise microwave integrated receiver able to cover each CCIR radio frequencies band from 4 to 11 GHz with the linearity performances required for 64 QAM digital radio application. View full abstract»

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  • A New Method to Prevent Spurious Oscillations in Coupled Cavity TWT's

    Publication Year: 1986, Page(s):174 - 179
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3502 KB)

    Self- and drive induced oscillations are prevented in Coupled Cavity Power Travelling Wave Tube Amplifiers (TWTA's) by introducing frequency dependent R.F. losses at the upper cutoff. This paper describes a new method to realize the requested lossed by means of the cutoff properties of loaded waveguides coupled to the circuit. The losses introduced do not interfere in the working band, so that the... View full abstract»

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  • A Fast Frequency Synthesizer for Microwave Radio

    Publication Year: 1986, Page(s):180 - 185
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5707 KB)

    The exact system equations of the sampled PLL's using one or two sample-and-hold circuits are given. The model takes into account the characteristics of the realizable sampler circuits. By formulating the system equations as a fixed-point problem the behaviour of the loops is studied rigorously correctly from mathematical point of view, too. The conditions of the minimum acquisition time are deter... View full abstract»

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