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GaAS/ SI MMICS SYNTHESIZED UPCONVERTER FOR BROADBAND TUNERS IN OPTICAL-FIBER CATV SYSTEMS
GaAs / Si MMICs Synthesized Upconverter for Broadband Tuners in Optical-Fiber CATV Systems T. Ohira*, T. Hirota*, T. Hiraoka*, T. Nakagawa*, M. Aikawa*; K. Suto**, T. Kokubun" and E. Voneda" Abstract A novel frequency-synthesized upconverter has been developed by implementing GaAs and Si MMICs, and applied to ultra broadband FM-FDM video tuners. The upconverter includes 3 chips of GaAs MMICs: a du
A 15 GHZ 2: 1 STATIC FREQUENCY DIVIDER IN A 1um SILICON BIPOLAR TECHNOLOGY
A 15 GHZ 2: 1 STATIC FREQUENCY DIVIDER IN A 1µm SILICON BIPOLAR TECHNOLOGY AFelder 1,2, P.Weger 1,2, E.Bertagnolli \ K. Ehinger1 ,J. Hauenschild 3, H.-M. Rein 3 ABSTRACT A 2: 1 static frequency divider with two separate outputs shifted in phase to each other by 90° is presented. The IC is fabricated with a 1µm silicon bipolar self-aligning . technology designed for a single supply voltage of 5
A REMOTE SOUND SOURCE BY MICROWAVE-INDUCED ACOUSTIC EFFECTS AT MEDIUM INTERFACE
A REMOTE SOUND SOURCE AT MEDIUM INTERFACE BY MICROWAVE-INDUCED ACOUSTIC EFFECTS Theodore C. GUOf and Wendy W. GUOf ABSTRACf A thorough formulation of acoustic coupling by high power microwaves (HPM) is presented. It is found that the coupling may arise from thermoacoustic effect, electrostrictive effect, and electromagnetic energy of dielectric polarization. The formulation takes into accou
RADIOMETRIC MEASUREMENT OF TIME-VARYING TEMPERATURE PROFILES
RADIOMETRIC MEASUREMENT OF TIME.V ARYING TEMPERATURE PROFILES F. Bardati°, G.A. Lovisolo#, S. Nocentini#,P.Tognolatti° andP.Cord.iner# . ABSTRACT Due to interest in non-invasive monitoring of subcutaneous temperature in hyperthermia treatments, a thermometer based on a multi-frequency microwave radiometer is compared to a standard invasive thermocouple system. The experiments have been made insi
A QUARTER-WAVE STRIPLINE RESONATOR FOR THE MEASUREMENT OF THE DIELECTRIC PROPERTIES OF SUBSTRATE MATERIALS
A QUARTER-WAVE STRIPLINE RESONATOR FOR THE MEASUREMENT OF THE DIELECTRIC PROPERTIES OF SUBSTRATE MATERIALS Matti Fischer*, Pertti Vainikainen*, Ebbe Nyfors* ABSTRACT In this paper a quarter-wave stripline resonator sensor sheets is presented. The resonant frequency of the dielectric constant of the sheet. The sensor can be used of the dielectric properties of substrate materials at 8 for the mea
AN IMPROVED CORRECTION PROCEDURE FOR INDUSTRIAL MICROWAVE MOISTURE MEASUREMENT IN GRAINY BULKS
AN IMPROVED CORRECTION PROCEDURE FOR INDUSTRIAL MOISTURE MEASUREMENT IN GRAINY BULKS A. Goller ABSTRACT MICROWAVE * Changes of the complex propagation coefficient of grainy bulks, especially building materials, due to surface effects and scattering of large particles are estimated. A new correction method for microwave moisture measurement taking into account ambient parameters and structure ef
MICROWAVE RESONATOR AS A DIELECTRIC OBJECT SORTING DEVICE: ADVANTAGES AND LIMITATIONS
MICROWAVE RESONATOR AS A DIELECTRIC OBJECT SORTING DEVICE: ADVANTAGES AND LIMITATIONS Andrzej W. Kraszewski! and Stuart O. Nelson1 ABSTRACT. Microwave resonators have been used as sensors for sorting dielectric objects. Differences in volume or mass can be distinguished among objects of irregular shape but of uniform dielectric properties. Moisture content, or other permittivity-dependent qualitie
MICROWAVE EDUCATION IN A UNIVERSITY ENGINEERING DEPARTMENT
MICROWAVE EDUCATION IN A UNIVERSITY ENGINERING DEPARTMENT VF Fusco, JAC Stewart ABSTRACT: This paper describes the broad range of skills acquisition necessary to induct undergraduate and postgraduate students into the area of 'Microwave Engineering'. The diversity of skills required by students in the various academic areas is discussed. An approach for attainment is elaborated for Electrical and
AN EDUCATIONAL TOOL "PLANE WAVE IN A METALLIC BOUNDED MEDIUM"
AN EDUCATIONAL TOOL "PLANE WAVE IN A METALLIC BOUNDED MEDIUM" J F Legier*, M Hochedez*, M Vindevoghel* ABSTRACT This article presents a package containing both a book concerning plane wave (TEM wave) in a metallic bounded medium and an interactive educational software. The purpose of this package is to enable the student to detect if a TEM wave can propagate in a waveguide, and to qualitatively
DESIGNING AND MAKING PLANAR CIRCUITS: A THOROUGH STUDY OF THE GLOBAL ACCURACY ACHIEVED BY STUDENTS
DESIGNING OF THE D. Vanhoenacker, ABSTRACI' AND MAKING PLANAR CIRCUITS: A THOROUGH STUDY GLOBAL ACCURACY ACHIEVED BY STUDENTS I. Huynen, R. Platteborze, R. Sciuto, A. Vander Vorst1 The paper describes the facilities used by the students in our Laboratory to realise planar circuits such as microstrips, slotlines, fin lines and coplanar waveguides. The precision and the limitations have