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Low phase noise PM-HFET oscillators with dielectric stabilization for Ka- and W-band frequencies
Low phase noise PM-HFEToscillators with dielectric stabilization for Ka- and W-band frequencies U Guttich * and J Wenger* * * Deutsche Aerospace Tel. 0049-731-3925479, AG, Sedanstr. 10, D-7900 Ulm, Germany, Fax 0049-731-392-3362 11, D- * * Daimler-Benz AG, Research Center, Wilhelm-Runge-Str. 7900 Ulm, Germany Abstract Based on the results obtained from monolithic MESFET oscillators with diel
A new K-band frequency divider by three using an injection locked oscillator in microstrip technique
A new K-band frequency divider by three using an iniection locked oscillator in microstrip technique w. Hess., R. Walter. * ALCATEL SEL, Ostendstr.3, D-7530 pforzheim, Germany Abstract In this paper analysis, design and measurements of a transmissiontype injectionlocked oscillator (ILO) are presented. Special feedback structures and matching networks were developed to give good results concerning
Application of the generalized ray expansion (GRE) method to the electromagnetic scattering of waveguide cavities
Application of the generalized ray expansion (GRE) method to the electromagnetic scattering of waveguide cavities F. Obelleiro, J.L. Rodriguez, A.G. Pino ETSI SPAIN. Departamento de Tecnologias de las Comunicaciones. Telecomunicacion. Universidad de Vigo. 3620o-VIGO, Abstract The analysis of high-frequency electromagnetic scattering by open-ended metallic waveguide cavities is useful for dealin
Multiple reflections and improvement of edge scattering in GRECO RCS prediction code
Multiple reflections and improvement of edge scattering in GRECO RCS prediction code Juan M. Rius, M.Vail-liossera, Lluis Jofre Grup AMR., Dpt. Teoria del Senyal i Comunicacions, UPC Apdo 30002, 08080 Barcelona, TI. +34-3-4017219, Fax +34-3-4017232 Abstract GRECO code for monostatic RCSprediction in real time has been extended by considering multiple reflections between surfaces and improving th
RCS analysis code for complex targets modelled with NURBS surfaces
RCS analysis code for complex targets modelled with NURBS surfaces M.F. Catedra, R.P. Torres, F. Rivas, J. Perez, M. Domingo Dpto. Electronica. Univ. Cantabria. Avda. Los Castros sin. 39005 Santander Cantabria. SPAIN Phone: 3442 201493. FAX: 3442 201402. e-mail CATEDRA@CCUCVXUNICANES Abstract In this communication a FORTRAN code, RANURS, to analyze the Radar Cross Section (RCS) of electrically la
RCS of engine inlets by a spectral iterative technique
RCS of engine inlets by a spectral iterative technique Juan M. Rius, A. Lozano, A. Cardama Antennas-Microwave-Radar Group, Dpt. Teoria del Senyal i Comunicacions, Universitat Politecnica de Catalunya, Apdo. 30002,08080 Barcelona,Spain. TI 93/4016811 Abstract A novel algorithm designed to compute efficiently and accurately the HF electromagnetic scattering from open-ended waveguide cavities is
A near field 3D radar imaging technique
A near field 3D radar imaging technique x. Anguela, A. Broquetas Dept. Teoria del Senyal i Comunicacions, Grup ANlR ETSETelecomunicacio - UPC P.O. Box 30002, 08080 Barcelona, Spain Tel. +34 3 4017221, Fax +34 3 4017232 Abstract The paper presents an algorithm which recovers a 3D reflectivity image of a target from near-field scattering measurements. Spherical wave nearfield illumination is used,
High temperature superconducting GBit/s subharmonically pumped modulator/demodulator
High temperature superconducting GBit/s subharmonically pumped modulator/demodulator Lawrence Drabeck, Paul Polakos, Megan O'Malley, Martin V. Schneider, Ralph Trambarulo, and Paul Mankiewich* AT&T Bell Laboratories, 101 Crawfords Corner Rood, Holmdel, NJ 07733, USA TEL (908)888-7139; FAX (908)8887074; e-mail DRABECK@SPIN.ATlCOM *MlT Lincoln Laboratory, Lexington, MA 02173, USA Abstract We hav
Very broad band TWAs to 80 GHz on GaAs substrate
Very broad band TWAs to 80 GHz on GaAs substrate Jurgen Braunstein, P.J. Tasker, A. HUismann, M. Schlechtweg, W. Reinert K. Kohler, W. Bronner, and W. Haydl Fraunhofer Institute for Applied Solid State Physics Tullastrasse 72, D-791 08 Freiburg, Germany Phone +49-761-5159-534, Fox +49-761-5159-400 e-mail: braunstein@iaf.fhg.de Abstract TravelingWave Amplifiers were fabricated successfully with a
Monolithic GaAs transimpedance amplifier with voltage tunable bandwidth and gain control
Monolithic GaAs transimpedance amplifier with voltage tunable bandwidth and gain control Jose M Hernandez-Munoz, Jose Gonzalez Microelectronics Division. TELEFONICA I+D. EmilioVargas,6. 28043 Madrid SPAIN Tel.:+34-1-337.4020; Fax +34-1-3374131 Abstract A monolithic transimpedance amplifier for optical front-ends with voltage tunable bandwidth between 200 MHz and 2.4 GHz, and 40 dB gain control m