Ultra low phase noise parametric frequency divider for highest performance microwave- and millimeter-wave frequency sources. H.Brauns, W.Konrath Abstract 225M A two stage parametric frequency divider (900/450/ Hz) with ultra low phase noise for application in the frequency generation section of advanced microwaveand millimeterwave frequencysources has been developed. The necessity for the usage

A novel design method for frequencJ doublers andquadruplers illustrated on C- and Ku-band telemetlY. command and control space applications B. Rattay *, ..I.M.Vanestrenvord B. IIdls **, ..I.L. Foucher ** *, Abstract A method and a topology focusing on output power flatness over a given bandwidth, combined with inherent harmonic rejection is presented and applied to a family of MMIC designs. Seve

Modelling of Schottky NLTL applications Peter Heymann, Helmut Prinzler, Thomas Langer, and Rail Doerner varactors for Abstract A new physical model of millimeter-wave Schottky varactors with hyperabrupt doping profile is presented. The bias dependent capacitance and series resistance can be calculated from technological parameters. Analytical formulas for C(V) and Rs(V) for exponentially graded

A comparison between the noise performance of millimeter wave MESFETs and Hetero-FETs by using a two-dimensional physical simulator AU Abou-Elnour and Klaus Schunemann Abstract A novel two-dimensional physical simulator is investigated to accurately determine the non stationary transport properties and the quantization effects in subhalf-micrometer gate length FETs. Due to the microscopic nature

Skin effect non -linear modelling of the transmisssion line Dawoud Y D S and Linton D Abstract Skin effect attenuates the high order harmonics generated through wave propagation in a non-linear transmission line (NLTL). In the literature significant difference is observed between the results of simulation dnd the measured data of the NLTL,Michael et al (3). In this paper the harmonic balance me

The chaotic oscillations of a single Josephson Junction with external magnetic fields Jian.Guo Ma and Ingo Wolff Abstract Using the Melnikov Method the oscillations of a single Josephsonjunction with external magnetic field and DC bias is analyzed. Under the external magnetic field the junction can operate in chaos even if there is no bias. The numerical results show that in dependent on some par

Analysis of MESFET self-oscillating mixer using Volterra series Siou Teck Chew end Tetsuo Iloh Abstract A new approach to the nonlinear problem of selfoscillating mixer has been investigated using Volterra series. Advantage of this approach is that the phase relationships amongst signals and stability criterion testing are not required for the analysis. Measured results with respect to RF frequen

Application of MMIC technology and new stability concept for recursive filter design .. Delmond, L Bilionnet, B ".rry .nd P Quillon Abstract In this paper, two active filters in the X-band, using low frequency transversal and recursive principles are presented. After some theoretical points, we first present a general design approach for recursive filters in MMIC technology. We then apply these

Performance margins and application area of SQUID amplifiers M. Tarasoy, A. VystaYkin, L. Filippenko Abstract A series of dc SQUID radiofrequencyamplifiers in the frequency range 0.1-1.1 GHz with noise temperature 0.4-2 K has been designed, fabricated and experimentally studied. For resonant input tank circuit an analytical model of noise temperature has been developed. A new effect of the output

Stability criteria via S-parameters Michal Odyniec Abstract This paper presents a fresh look at applications of S-parameters to stability analysis. In particular, we present a simple example that proves that, contrary to the popular belief, the stability criterion SrSn > 1 is, in general, not true. We go back to Nyquist stability criterion to assure the proper interpretation of the product SrSnw