TREATMENT OF ERROR IN CHARACTERISATION ~ OF NONLINEAR AMPLIFIERS G.K.Srnith and G. Berretta Abstract: The practical problems associated with predicting intermodulation performance of nonlinear amplifiers in multicarrier operation are discussed, with emphasis on the utility of these methods within the laboratory. A simple teclmique of calculating this performance and simultaneously compensatin

WAVEFORMS AND SATURATION IN GaAs POWER MESFETs F. Sechi, H. Huang and B. Perlman ABSTRACT Measurements of voltage and current waveforms in power MESFETs have shown that voltage breakdown of the Schottky barrier is responsible for power saturation and consequent nonlinearity of MESFET amplifiers. Also, high peak drain-gate voltages affect device reliability and noise in FET oscillators. 

A 4 GHz 'IWI' REPIACEABLE GaAs MFSFEI' AMPLIFIER Youichi Arai, Shin-ichi Murai and Hidemitsu Karnizo ABSTRACI' A 4 GHz 10 watt MESFET anplifier for replacerrent of a Traveling-WaveTube anplifier has been developed. The anplifier consists of a herrretically sealed five stage anplifier rrodule using GaAs MFSFET chips and DC power supply. The anplifier provides an output power of 10 watts at

CONCEPTION OF VERY BROAD BAND AMPLIFIERS R. DEGOUT - G. CHAMBAUDU - J. OBREGON ABSTRACT A design of broad band FET amplifier circuits is presented in this paper, using a unilateral equivalent circuit of the FET proved by its S parameter measurements: this method consists of decomposing the gain in a product of three transfer functions: one is constant versus frequency and the other two are

DESIGN AND PERFORMANCE OF A 2 TO 18 GHz MEDIUM POWER GA AS MESFET AMPLIFIER * GANESH R. BASAWAPATNA ABSTRACT This paper discusses the design and performance of a multi-stage wideband GaAs MESFET amplifier. The amplifier had a small signal gain of 12 to 20 dB in the frequency range of 2 to 18 GHz. The l-dB gain-compression point of the amplifier was 13 dBm and the saturated power output exceeded 1

IMPROVED DESIGN METHOD FOR X-BAIID MICROS TRIP FET AMPLIFIERS ADJUSTMENT TECHNIQUES. WITHOUT ExPERIMENTAL A. Delgado, ~ C. Camaoho * ,V. Ortega. * ABSTRACT. In this paper we desrcibe a preoise method of designing FET amplifiers, that permit us to get a very good accordanoe between the ca1cu1ated design networks and the final results obtained by measurements, avoiding the lengthy and trick

METALLIC AND GOUBAU WAVEGUIDES WIT11 ECCENTRIC CROSS-SECTIONS Hossain CIRCULAR AND CONCENTRIC J.A.Roumeliotis, CIRCULAR-ELLIPTIC ABM.Siddique and J.G.Fikioris+ ABSTRACT The cutoff wavenumbers knm and the field of three types of two-conductor metallic and two types of Goubau waveguides are determined analytically. The types are: Eccentric circular conductors of radii Rl,R2 and distance d be

DEVICE-CAVITY J.E. Sitch INTERACTION SIMULATIONS USING T.L.M. ABSTRACT This paper describes a new numerical technique which is used to model a complete oscillator, including the active device and the passive circuits. Transmission line modelling is used to represent the cavity, which can contain lumped as well as distributed components. A self consistent physical model is used for the active

ATTENUATION OF THE FUNDAMENTAL OF THE C. FRAY SHIELDED RING DIPOLAR LINE. MODE and A. PAPIERNIK. * ABSTRACT. The theoretical attenuation of the shielded ring line operating in the fundamental dipolar hybrid mode is discussed and this guiding structure is shown to be low-loss when the distance between the rings and the shield is large. Measurements on a line consisting of equally spaced rings

THE POWER METHOD: A TECHNIQUE FOR GUIDING APPROACH TO MICROWAVE CIRCUIT SYNTHESIS STRUCTURE ANALYSIS AND AN A. MOHSEN ABSTRACT The matrix eigenvalue analysis of waveguides does not require prior computer storage. The methods to accelerate the method compared to cussed. The reduction treated by the method problem resulting from the finite-difference is treated using the power method. The metho