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MICROWAVE REMOTE SENSING TECHNIQUES, A SURVEY
MICROWAVE REMOTE SENSING TECHNIQUES, A SURVEY M. Vogel + Abstract The presentation will consider the motivations for the development of remote sensing techniques and systems for operation from aircraft and satellites and survey the various classes of passive and active microwave remote sensing instruments, microwave their remote sensing instruments, inherent capabilities, requirements for
GIGABIT ELECTRONICS
GIGABIT Berthold ELECTRONICS G. Bosch ABSTRACT Intended as an introductory survey, the paper at first points out the pertinent applications of gigabit/s techniques. This is followed by a description of the general circuit design philosophy when dealing with gigabit information rates and of the main problems encountered. Finally, the present status is assessed in the realization of the fast switc
LOCAL OSCILLATOR FOR MICROWAVE RADIO LINK TRANSCEIVERS
LOCAL OSCILLATOR FOR MICROWAVE RADIO LINK TRANSCEIVERS E.Cottatellucci, ABSTRACT M.Tosolini, G.Tosti * This local oscillator uses a RF transistor generator with a frequency stability of 1% and reduced FM noise. The requested frequency stability of +-10.10-6 is achieved by locking the R.F. generator to a quartz oscillator by means of two sampling mixers and a zero frequency discriminator. The
A 7GHz BAND GaAs FET AMPLIFIER FOR THE STRAIGHT-THROUGH-REPEATER
A 7GHz BAND GaAs FET AMPLIFIER FOR THE STRAIGHT-THROUGH-REPEATER Haruo Yokouchi, Akira Izumi, Yoshikazu Dooi and Kazuo Takahara ABSTRACT A 7GHz band GaAs FET amplifier for the straight-through-repeater has been developed. The amplifier has six single-ended stages, a 40dB linear gain, a 4 to 4.5dB noise figure and 17dBm saturated output power over a frequency range of 6.5 to 6.9GHz. Th
11 GHz PARAMETRIC AMPLIFIER FOR COMMUNICATIONS VIA SATELLITE
11 GHz PARAMETRIC AMPLIFIER FOR COMMUNICATIONS VIA SATELLITE ~) C.Bassi, T. D'Arcangelo ABSTRACT The 11 GHz band range is getting parametric to cover popularity amplifier for communications has therefore needs been via satellite. in this (Inexperiments traffic A new uncooled frequency telsat designed the operational as those of commercial V satellites) as well of specific communicatio
NON LINEAR FM DISTORTION DUE TO HARMONIC TRANSMISSION
TRADE-OFF BETWEEN INTERMODULATIONS AND THERMAL NOISE IN A SATELLITE TRANSISTOR POWER AMPLIFIER
TRADE-OFF BETWEEN INTERMODULATIONS TRANSISTOR POWER AMPLIFIER W. AND THERMAL NOISE IN A SATELLITE Kriedte and M. Lopriore~ Abstract When a non-linear power amplifier is signal, intermodulation products are In order to quantify this impairment resolved; first whether the IM spectra carriers have any residual subjective equivalent noise level to be added to budgets. This paper answer the descr
RELIABLE PREDICTION OF INTERMODULATION INTERFERENCE AND CROSSTALK IN NONLINEAR SATELLITE TRANSPONDERS
RELIABLE CROSSTALK Werner ABSTRACT PREDICTION OF INTERMODULATION SATELLITE INTERFERENCE AND IN NONLINEAR TRANSPONDERS SCHREITMULLER The prediction of multicarrier performance in nonlinear satellite transponders is essential for optimizing a communication system providing frequency division multiple access (FDMA) operation. In general satellite nonlinearity is determined by the traveling wa
GO SYNTHESIS OF REFLECTORS USING COMPLEX COORDINATES
GO SYNTHESIS OF REFLECTORS USING COMPLEX COORDINATES B.S. Westcott and F. Br1ckell . * ABSTRACT. Recent theoretical work on direct GO synthesis of reflectors for two variable far-field and point source feed pattern specification is described. The mathematics is simplified by the use of complex coordinates and stereographic projection. Reflector properties are formulated in terms of the ma
COMPLETE RADIATION PATTERN OF PARABOLIC REFLECTORS, INCLUDING THE EFFECTS OF A LOADED RIM
COMPLETE RADIATION PATTERN OF PARABOLIC REFLECTORS, INCLUDING THE EFFECTS OF A LOADED RIM V. Daniele + ,I. Montrosset ++ , M. Oreflce . + , R. Zich + ABSTRACT -------This paper deals with the calculation of the complete radiation pattern of a parabolic reflector antenna by using the induced currents method and the geometrical theory of diffraction in different regions, extended in