ON THE DESIGN OF MESFET HARMONIC INJECTION FREQUENCY DIVIDERS HARMONICBALANCE TEHCNIQUE . . USING THE Pablo Dorta, Jorge Perez ABSTRACT In this paper we present a design approach for harmonic injection frequency dividers using the harmonic balance technique. This way we have obtained the optimum match loads and bias point for a HESFET device when used as a divider. Then we have implemented t

EFFECT OF EMBEDDING IMPEDANCES ON THE EFFICIENCY SCHOTTKY DIODE FREQUENCY MULTIPLIERS .. OF VARISTOR J . Chramiec ABSTRACT Numerical modelling of varistor Schottky diode frequency multipliers reveals their optimum operating conditions. In the case of doublers the minimum conversion loss is provided by open-circuiting of the unused harmonics. The choice of the embedding impedances is of part

THE USE OF A NEURAL NONLINEAR NET FOR COPEING DISTORTIONS WITH A. Bernardini, M. CaITarini, S. De Fina: University "La Sapienza" INFOCOM DPf. Rome via Eudossiana 18 ABSTRACf In this paper a predistoner realized with a neural net is proposed. The predistortion acts on the whole input waveform: it provides a continuous time prewarping where convenctional base band predistortion acts only on the

MODELLING OF RESISTIVE AND GEOMETRICAL DISCONTINUITIES MICROSTRIP INTERCONNECTIONS ON INTEGRATED CIRCUITS S Sali ABSTRACT IN An algorithm suitable for the computer aided analysis of geometrical and resistive discontinuities present in microstrip interconnections on silicon integrated circuit subtrates is presented. The distortion and dispersion of an electrical pulse caused by such discontinuiti

A PRECISION MMIC PHASE SHIFfER FOR MLS APPLICATIONS J. L. Fikart, P. C. Walters and M. J. Wlodyka* ABSTRACT A monolithic digital phase shifter with novel means of precise phase adjustment has been developed. A conventional switched low-pass/high-pass filter structure has been modified for precision phase control. For very fine phase adjustments, in the order of a few degrees, the adjustment i

LOW NOISE PHASE LOCKED VCO AT 2.5 GHZ FOR OPTICAL NETWORKS USING FIFTH HARMONIC STW DELAY LINE TRANSMISSION B. Fleischmann +, A. Roth, P. Russer, R. Weigel ABSTRACT A hybrid VCO at 2488.32 MHz, which is phase locked to a crystal oscillator operating at 75.4 MHz, is described. As the frequency controlling element of the VCO, acoustic surface transverse wave (STW) delay lines operating at the fi

CIRCULAR WAVEGUIDE WITH A RESISTIVE FILM IN THE DIAMETRAL PLANE * I M Braver. P Sh Fridberg.* Kh L Garb * ABSTRACT Two main problems connected with the design of the absorbing section of the rotary vane attenuator were strictly solved: 1) attenuation constant of the dominant mode of the circular waveguide with a resistive film in the diametral plane was determined. 2) the scattering matrix of a s

MICROWAVE KOLESNIKOV Abstract. SET FOR DRYING E.V., OF QUICKSAND V.N.* MATERIALS SEREBRYAKOV Construction cular waveguide products of vertical set on a base of irregular for quicksand Design materials singularities cirin is proposed convey drying persistent regime. of the in set and testing different results are represented. The set may be used branches of industry and agricul

STUDY OF MECHANISMS . OF ELECTROMAGNETIC-FIELDS MEDICAL APPARATUS . . O.S.So~nikov .. THERAPEUTI C EFFECT A.Yu.Sazonov ELEMENTS S.V.Galchenko. and A.M.S~arik ABSTRACT OF MICROWAVE L.V.Ryzhkova. ... The designs of an effective decimeter wave applicator for hyperthermia and miniature electrically scanned millimeter wave (MMV) antenna for EHF therapy are described; the results of their experim

PRACTICAL VERYFICATION OF MOISTURE MONITORING OF THE MICROWAVE tWO-PARAMETERS IN GRAIN IN. HARVEST TIME METHOD Agnieszka Mlodzka - Stybel ABSTRACT The idea of improvement microwave monitoring of moisture content in grain by use of simultaneous measurement of two microwave parameters; attenuation and phase shift is being worked on for many years. The main advantage of it is serious limitati