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SPECTRAL DOMAIN ANALYSIS OF A FINLINE OPTICAL PHASE MODULATOR
SPECTRAL DOMAIN ANALYSIS OF A FINLINE OPTICAL PHASE MODULATOR P. CHAZANIt, S. TEDJINI It, A. VILCOTIt ABSTRACT: We propose and analyse a new electrooptic phase structure using the finline technology which is well suited for narrow band millimeter wave and submillimeter wave applications. A preliminary modelling of the proposed structure is reported. A full wave analysis of the structure which tak
COHERENT OPTICAL GENERATION OF A 6 GHz MICROWAVE SIGNAL WITH DIRECTLY PHASE LOCKED SEMICONDUCTOR DFB LASERS
Coherent Optical Generation of a 6 GHz Microwave Signal with Directly Phase Locked Semiconductor DFB Lasers u. Gliese, T.N. Nielsen, M. Bruun, E. Lintz Christensen and K.E. Stubkjaer Center for Broadband Telecommunications, Electromagnetics Institute Technical University of Denmark, Building 348, DK-2800 Lyngby, Denmark S. Lindgren and B. Broberg Swedish Institute of Microelectronics, S-164 21 Ki
TUNED OPTICAL FRONT-END MMIC AMPLIFIERS FOR A COHERENT OPTICAL RECEIVER
TUNED OPTICAL FRONT-END RECEIVER MMIC AMPLIFIERS FOR A COHERENT OPTICAL A K Petersen* , A M Jagd* ABSTRACT Two low noise tuned optical front-end GaAs MESFET MMIC amplifiers for a coherent optical CPFSK (Continuous Phase Frequency Shift Keying) receiver are presented. The receiver operates at 2.5 Gbit/s at an IF of approx. 9 GHz. The front-ends are based on full-custom designed MMICs and a com
OPTICAL MILLIMETER WAVE GENERATION BY SUPERHARMONIC INJECTION LOCKING
OPTICAL MILLIMETER WAVE GENERATION SUPERHARMONIC INJECTION LOCKING BY T. Berceli*, K. Schiinemanno, M. Daaso, R. Knochelo, F. Nilkeso ABSTRACT New optical methods are presented to generate millimeter wave signals with high frequency stability. One of the new methods applies optical superharmonic injection locking by mixing the beams of two lasers, and a phase locking technique to stabilize the
THE MOISTURE MEASUREMENTS OF INDUSTRIAL MATERIALS AND ARTICLES BY USING MILLIMETER WAVES
THE MOISTURE MEASUREMENTS OF INDUSTRIAL MATERIALS AND ARTICLES BY USING MILLIMETER WAVES A A Vertiy, S P Gavrilov, ABSTRACT S I Tarapov The development of methods for controlling the quality of industrial materials and articles refers to the most important directions of scientific and technical progress. At present the radiowave non-disturbance control based on the interaction of an electromagn
MICROWAVE CURRENT MONITORING IN ELECTRICAL POWER LINES
MICROWAVE CURRENT MONITORING IN ELECTRICAL POWER LINES Edmar Camargo and Fernando ABSTRACT A microwave system has been developed to operate at 24 GHz, for the remote monitoring of current in electrical power lines. The microwave radio link parameters are: a maximum distance of 100 meters between transmitter and receiver, + 3 dBm transmitter output power and a receiver noise figure of 12 dB. The me
A METHOD FOR MEASURING PROPERTIES OF GRAINY MATERIALS USING DEPOLARIZED RAYLEIGH-SCATTERING
A METHOD FOR MEASURING PROPERTIES OF GRAINY MATERIALS USING DEPOLARIZED RAYLEIGH-SCATTERING Anssi P. Toropainen * ABSTRACT A new method for measuring properties of grainy materials using depolarized Rayleighscattering is introduced. Laboratory tests at 35 GHz with white rice and polyethene grains using a vector network analyzer and two corrugated horn antennas are presented and results are compare
ON-LINE CONTROL IN WOOD AND PAPER INDUSTRIES BY MEANS OF RAPID MICROWAVE LINEAR SENSORS
ON-LINE BY MEANS CONTROL IN WOOD AND PAPER MICROWAVE INDUSTRIES SENSORS J.F.PortalaO, J.Ch.Bolomey§ OF RAPID LINEAR C.Lhiaubet*, ABSTRACT G.Cottard*, J.CiccotelliO, This paper has two main purposes. First of all, it presents recent technological developments of microwave linear sensors based on the Modulated Scattering Technique (MST). Secondly, it reports results of in-situ assessments c
A GaAs MMIC DOPPLER SENSOR FOR AUTOMOTIVE APPLICATIONS
A GaAs MMIC DOPPLER SENSOR FOR AUTOMOTIVE APPLICATIONS P. DESCAMPS, M. EL BEKKALI, J. VINDEVOGHEL * ABSTRACT To automate the driving of terrestrial vehicles, it is necessary to determine with the highest accuracy instantaneous information about the motion of the vehicles, especially the values of the instantaneous speed and of the distance covered by the mobile. A full integrated microwave Dopple
FULL WAVE ANALYSIS OF A TRAPEZOIDAL TRANSMISSION LINE USING THE BOUNDARY ELEMENT METHOD
FULL WAVE ANALYSIS OF A TRAPEZOIDAL TRANSMISSION LINE USING THE BOUNDARY ELEMENT METHOD B. Toland and T. Itoh * ABSTRACf A full wave analysis of a transmission line with a trapezoidal cross section is described. The boundary element method (BEM) is used, and by making a convenient choice for the dyadic Green's function the method is shown to be very efficient in comparison to appropriate alternat