MOVEABLE BEAM FORMING MATRIX EQUIPMENT FOR DIRECT BROADCAST SATELLITES OTHER APPLICATIONS AND A.-M. Khilla ABSTRACT This paper presents the results of an ESA program for developing and breadboarding a space-qualified moveable beam forming network (BFN) an integrated control-board in order to adjust the amplitude and phase drive signals required for each element in an active-array antenna, resul

26.5-110 GHz PRESELECTED BASED ON BARIUM-FERRITE HARMONIC MIXERS FIRST CONVERTERS TUNED FILTERS AND Dean Nicholsen, Robert Matreci, ABSTRACT Covering hexaCerrite responses preselectors fundamental * Mike Levernier, Frank Gary Dick Beardsley, and Mike Dethlefsen ** the five waveguide resonator hampering provide bands Crom 26.5-110 GHz, magnetically eliminate the numerous application art.

Subharmonically pumped SIS mixer. V.Yu.Belitsky,I.L.Serpuchenko,M.A.Tarasov,A.N.Vystavkin ABSTRACT. SIS harmonic mixer based on quasioptical structure with equiangular planar spiral antenna was investigated. SIS junction capacitance was resonated out by integrated circuit elements. Conversion losses, saturation power and noise were measured for quantum and nonquantum LO frequency operation. N

A HIGH FREQUENCY LOW NOISE ACOUSTIC STW VCO B. Fleischmann, P. Russer *, A. Schaller, * R. Weigel * ABSTRACT A voltage controlled oscillator (VCO) at 2.65 GHz has been developed using acoustic surface transverse wave (STW) delay lines operating at the fifth harmonic as the frequency controlling element. A filter with three transducers has been designed. The STW filter also serves as the os

HYBRlD INTEGRATED Ku-BAND vea * J. * P. * A. Dupuis, Hausner, Russer ABSTRACT A hybrid integrated Ku-band voltage controlled oscillator is described. The oscillator design is based upon a linear circuit model of the GaAs-MESFET NE71000. The oscillator circuit is subdivided into two chained twoports, an active twoport containing only the voltage controlled current source modelling the transcond

EVALUATION OF DIFFERENT MMIC VCO DESIGN APPROACHES Anton M. B~ifot, Inge Melhus, and 0ystein Pedersen* ABSTRACT This paper describes trolled oscillators the evaluation of six different MMIC voltage con(VCO's). One of the VCO's is meant to be utilized as basis oscillator in a phase-locked loop (PLL) , and the VCO's are all especially sensitive to varactor changes. The intention is to find the

Broadband Tunable Oscillator Ohashi, * with Two MSW Resonators Ishida, Hideki Asao, Hideyuki and Tsutomu Hashimoto Osami ABSTRACT A broadband tunable oscillator with two MSW resonators has been developed. The resonators with di fferent sizes of YIG films are placed in the same magnetic field. The tunable bandwidth extends over 2 octaves up to 20 GHz. 

INVESTIGATION OF GaAs IN A CELL LIBRARY MESFET SMALL SIGNAL EQUIVALENT CIRCUITS FOR USE J.-E. MUller ABSTRACT More than 20 different linear equivalent circuits can be found in the literature for modeling GaAs MESFETs. Five models with 7 to 13 elements were selected and investigated for use in a cell library. S~parameters were measured on wafer (Cascade) up to 20 GHz for 1 and 0.5 µm GaAs

LARGE SIGNAL ANALYSIS OF LASER MICROWAVE FIBRE-OPTIC LINKS S. Iezekiel, C.M. Snowden, and M.J.Howest DIODES FOR DIRECTLY MODULATED ABSTRACT A nonlinear circuit analysis procedure which is suitable for the simulation of directly modulated laser diodes at microwave frequencies has been developed. The first stage involves an analysis of the laser rate equations using bifurcation theory. This yie

A HIGHLY EFFICIENT p-n JUNCTION MODEL FOR USE IN HARMONIC-BALANCE SIMULATION Vittorio RIZZOLI (1), Franco MASTRI (2), and Claudio CECCHEITI (3) ABSlRACf The paper proposes a new numerical formulation of the classic p-n junction model which is particularly suitable for harmonic-balance applications. Making use of a state-variable approach and of a non conventional choice of the state variable, the