Homodyne frequency demodulator for phase noise measurement systems Andrzej Lozowski, Bogdan Galwas Abstract Every phase noise measurement system which is based on frequency demodulator transforms frequency noise (FM) into proportional noise voltage waveform. After spectral analysis of the output noise voltage, the f[Hz-VHz] spectral density of frequency fluctuations S1' or other quantities are ca

Overcoming the typical limitations of the cylindrical nearfield to farfield transformation .. 'Chrlst, F .. L8nc18torfer Abstract The accurracy of the conventional cylindrical nearfield-farfield transformation technique suffers mainly from two facts: The non-ideal walls of the anechoic chamber cause multipath reflections and by sampling the field along the curved surface of a cylinder only, signi

A new kind of noise analysis model for simulating accurate phase noise in microwave MESFET oscillators Chang-LI Chen, Bao-Xln Gao and Xing-Nan Hong Abstract The paper presents a new kind of noise analysis model of oscillators and an efficientapproach to the simulationof accurate near-carrierphase noise infree running microwave MESFEToscillators. The noise analysis model of the oscillatorcontains

Computationally efficient dynamical analysis of optically-driven injection-locked GaAs FET oscillators E F Calandra and F Silvestri, student Abstract A computer-aided simulation technique for the dynamical analysis of a class of GaAs FET opticallydriven injection-locked oscillators (ODILO's) is presented. By combining a measurement-derived nonlinear model of the illuminated transistor with a phas

The synthesis of microwave and MM.wave transistor oscillators based on physical modelling Andrew J Panks, Michael J Howes and Christopher M Snowden Abstract A new fast and efficient large-signal time domain circuit design routine for MMIC and M3ICoscillators has been developed by combining a quasi-twodimensional MESFET/HEMT physical model with lumped element circuit models. The main objective is

Robust continuation method for tuning characteristics computation and global stability analysis of microwave oscillators .. FIII.bick,PRuss., Abstract A continuation method for the computation of the tuning characteristics of microwave oscillators based on a predictor corrector algorithm is presented. As special attention is directed to robustness of the path following procedure the simulation so

A generic approach to optimum design of microwave and millimeter wave subharmonic mixers Asher Madjar Abstract The design of suharmonic mixers is complicated and involves separation of signals and application of correct loading at idler frequencies. In this paper we present a novel generic approach, which enables the designer to establish the optimum loading conditions for the different signals t

Global stability sell-oscillating J Morales, A Suarez, E Artal* R Quere** analysis mixers 01 Abstract The harmonic balance technique is applied here to the simulation of self-oscillating mixers and it is combined with a bifurcations analysis in order to predict the evolution of their IF output as a function of input power or frequency. A technique has also been developed to obtain the global st

Improved calculation of thin layer micros trip-slot line interactions using quasi-static images "eannlck .ercu*, "an Van Meae**, Niels Fache**, Paul I.8g_e* Abstract The mixed potential formulation for multilayered microstrip-slotline structures described in [1] is improved by the use of quasi-static images. These imagesdominatethe near fieldbehaviorofthe Green's potentialfunctions,when thin laye

Characterization of A Folded Stepped Impedance Resonator for Miniature Microstrip Bandpass Filter Applications Yongxi Qian, Kenji Yanagi and Eikichi Yamashita Abstract In this paper we propose a Folded Stepped Impedance Resonator(FSIR) which is effective in realizing extremely compact microstrip bandpass filters. To characterize this new structure we use an FDTD algorithm where all discontinuity