SUPERCONDUCTING LINEAR MICRO\VAVE CIRCUITS O.G.Vendik, ABSTRACT M.M.Gaydukov, A.B.Kozyrev, S.G.Kolesov* Applications make possible b) modulators, transition of superconductivity in microwave technique filters (the to develop a) high quality resonators, delay lines with small losses and controlled from superconducting to normal dispersion, state of material switches on the basis of S-N

PRECISE GLOBAL SATELLITE POSITIONING NAVIGATION SYSTEM BY MEANS OF THE NAVSTAR-GPS Ph. Hartl* ABSTRACT The basic concept of the NAVSTAR - GPS radio navigation system is reviewed. The advantages of this spaceborne system over terrestrial radio positioning systems are discussed. The features of this fully coherent, PRNmodulated, two frequency systems are described. GPS can be used for ver

NEW MICROWAVE TECHNOLOGIES FOR AIRBORNE APPLICATIONS G. Cachier, M. Houdart, C. Joussemet. * ABSTRACT Multifunction capabilities and constant volume requirements for airborne systems constantly push microwave technologies towards higher densi ties and lower costs. The best examples of this evolution are the active arrays, which offer ultimate operational flexibility. We will show that this exp

TECHNOLOGY FOR FUTURE PERSONAL RADIO COMMUNICATION Osten Makitalo, Swedish Telecom Radio, Stockholm, Sweden ABSTRACT Mobile communication have experienced a tremendous success over the last few years. This will no doubt continue. So far, the systems have been analogue and telephony has been the main service. Development in three areas will to a very large extent contribute to further p

Analysis and Design of Evanescent Non-Touching E-Plane Fins Qiu Zhang* and Tatsuo Itoh* Mode Waveguide Filter with Abstract: The analysis and design of evanescent mode waveguide filters with non-touching E-plane fins are presented. The theoretical analysis is based on the generalized scattering matrix technique in conjunction with the spectral domain approach and mode matching method. The mesasu

A VERY BROADBAND MATCHED TERMINATION UTILIZING NON-GROUNDED RADIAL LINES F. Giannini ABSTRACT * C. Paoloni * M. Ruggieri * A novel very broadband termination has been developed, using radial lines in a "shamrock" configuration. Broader bandwidths are achievable than adopting both a conventional straight stub and an "half-moon" configuration. with respect to the latter case, the circumferential

TWO-DIMENSIONAL SYNTHESIS AND DESIGN OF MIC FILTERS Guglielmo Forte, Mario Salerno and Roberto Sorrentino * ABSTRACT. Microstrip low-pass filters with very wide stopbands and very sharp cutoff rates have been designed and realized using a new technique which incorporates two-dimensional effects in the synthesis procedure. This removes the limitations inherent to the conventional transmission line

A FAST FERRITE PHASE SHIFTER FOR 10.7 - 11.7 GHz B Car1egrim, S Hagelin, G Stenstrom ABSTRACT As a part of a development program sponsored by European Space Agency (ESA), a variable phase shifter (VPS) of dual ferrite toroid type has been developed. The phase shifter is a critical component in the feed network of a fully reconfigurab1e antenna system. The switching time is less than 1 µ

A SOLUTION TO THE 3-CONDUCTOR MAPPING PROBLEM WITH APPLICATION TO PLANAR LINES AND COUPLERS W. J. Getsinger* ABSTRACT A technique is described by which conventional conformal mapping can be extended to analyze some transmission-line configurations which cannot be reduced by symmetry to less than 3 separate conductors. Asymmetrical coupled stripline and the 4-center-strip CPW coupler are used as e

SOLITONS AT MICROWAVE FREQUENCIES IN MAGNETOSTATIC DEVICES: GENERAL PROPERTIES AND APPLICATIONS. P. De Gasperis*, R. Marcelli§, G. Miccoli*, and M. Masssani§ ABSTRACT Recently, solitons have found a remarkable series of utilizations in many fields of Applied Physics. Those results have stimulated the search for the existence of solitons in a system such as a magnetostatic delay line which p