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Microsoft Word - eumwl200207.doc
Time domain method for the noise parameters measurement Fre de rique Giannini, Emmanuelle Bourdel, Daniel Pasquet ENSEA/EMO, 6, avenue du Ponceau, 95014 Cergy, France, giannini@ensea.fr The noise parameters are usually measured by a multi-impedance method. We propose a new method which requires a lighter equipment using a numerical process. It consists in using an inverse Fouriers transform in ord
A Compact System for Systematic Noise Measurement of Schottky Diodes for THz Applications
1 A Compact System for Systematic Noise Measurement of Schottky Diodes for THz Applications ¨ S. Biber, O. Koca, K. Huber, G. Rehm, L.-P. Schmidt Lehrstuhl f¨ r Hochfrequenztechnik (LHFT), Universit¨ t Erlangen-N¨ rnberg u a u Cauerstr. 9, D-91058 Erlangen, Germany phone: +49 9131 8527223, facsimile: +49 9131 8527212, email: stephan@lhft.eei.uni-erlangen.de Abstract--As Schottky diodes still rema
Maci.PDF
High Frequency Improvements to PO-based Methods for the Analysis of Integrated Dielectric Lens Antennas D. Pasqualini, S. Maci* Department of Information Engineering - University of Siena, Via Roma 56 - 53100 Siena Italy, pasqua@dii.unisi.it Department of Information Engineering - University of Siena, Via Roma 56 - 53100 Siena Italy, macis@dii.unisi.it * A high frequency approach is presente
Optimized Multiband Single-layer Frequency Selective Surface and Its Experimental Verification
Optimized Multiband Single-layer Frequency Selective Surface and Its Experimental Verification M. Ohira, H. Deguchi, M. Tsuji, and H. Shigesawa Department of Electronics, Doshisha University Kyotanabe, Kyoto 610-0321, Japan dtb0155@mail4.doshisha.ac.jp This paper has developed a multiband single-layer frequency selective surface (FSS) designed by using the optimization technique (micro-genetic alg
Microsoft Word - Bifocal_antenna_proc.doc
A 76 GHz multiple-beam planar reflector antenna W. Menzel, M. Al-Tikriti*, R. Leberer** Microwave Techniques, University of Ulm, D-89069 Ulm, Germany E-mail: wolfgang.menzel@ieee.org * E-mail: maysoun@mwt.e-technik.uni-ulm.de ** E-mail: ralf@ mwt.e-technik.uni-ulm.de Abstract -- A multiple-beam antenna based on the principles of a folded reflectarray antenna and a bifocal antenna is presented. Exp
Fast and accurate analysis of scanning slotted waveguide arrays
Fast and accurate analysis of scanning slotted waveguide arrays Roberto Vincenti Gatti, Roberto Sorrentino, Marco Dionigi University of Perugia, Dept. Electronic and Information Engineering, 06125 Perugia, Italy Abstract An iterative procedure is presented for a fast and accurate analysis of scanning slotted waveguide arrays including the effects of mutual couplings and their dependence on the
A Folded Reflectarray Antenna with Sidelobe Reduction
A Folded Reflectarray Antenna with Sidelobe Reduction Maysoun Al-Tikriti, Wolfgang Menzel Microwave Techniques, University of Ulm, 89069 Ulm, Germany E-mail: maysoun@mwt.e-technik.uni-ulm.de A single-polarization quasi-optical bandpass filter is used as a polarizer in a folded reflectarray antenna. The filter suppresses the sidelobe level of the antenna by up to 15 dB in the range outside of 20 .
Microsoft Word - Filter_Proc1.doc
Waveguide Filter Integrated into a Planar Circuit W. Menzel, M. Wetzel* Microwave Techniques, University of Ulm, D-89069 Ulm, Germany E-mail: wolfgang.menzel@ieee.org * E-mail: markus@mwt.e-technik.uni-ulm.de Abstract - Design and results of a waveguide filter are presented. The filter is integrated into the carrier block of a planar microstrip circuit. The coupling from the planar microstrip cir
Microsoft Word - LowpassBandpassIV.doc
Integration of Lowpass Filters in Bandpass Filters for Stopband Improvement G. Goussetis and D. Budimir Wireless Communications Research Group, Department of Electronic Systems, Westminster University, London W1W 6UW, UK. gousseg@wmin.ac.uk, budimid@wmin.ac.uk A novel waveguide E-plane filter with suppressed spurious responses up to almost twice the center frequency is proposed. Stopband improveme
Microsoft Word - AntennaFilterIV.doc
Antenna Filter for Modern Wireless Systems G. Goussetis and D. Budimir Wireless Communications Research Group, Department of Electronic Systems, Westminster University, London W1W 6UW, UK. gousseg@wmin.ac.uk budimid@wmin.ac.uk A compact, low loss and mass producible antenna filter is proposed. The radiating element consists of a microstrip patch. Waveguide feeding ensures low loss. Coupling with t