The Phased Array Approach to SKA, Results of a Demonstrator Project J.G. Bij de Vaate, D. Kant ASTRON, P.O. Box 2, Dwingeloo, The Netherlands, vaate-astron.nl A phased-array demonstrator known as the Thousand Element Array (THEA) is currently under construction of which the first results are presented in this paper. THEA is an out-door phased array system that is able to detect signals from differ

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 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

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

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

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 .

Extracted Pole Bandpass Filters Based On The Slotted Irises A.Kirilenko, L.Mospan, V.Tkachenko Institute of Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Ak. Proskury Str., 61085, Kharkov, Ukraine phone: 380 572 448518, fax: 380 572 441105, 380 572 7124829, E-mail: kirilenko-ire.kharkov.ua A new design of directly coupled bandpass filter that provides extracted st

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

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

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