Low-noise amplifier
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2012, Vol 0, Issue 50
Abstract
The mixture of signal and noise processing device is considered in this article. It contains two channels: the main channel (MC) contains the mixture of signal and noise, and compensation channel (CC) that extracts just a noise from the mixture. The feature of the processing circuit is that the mixture samples are formed by short impulses at the moments of passing signal through zero. Further antiphase noise is set in the channels, adder by which the noise is removed from mixture is set on the cannels output. Study of the described device was carried out for simulated AM signal and white Gaussian noise in simulation environment Matlab. The results are shown, that device reduces noise by 16 dB of power.
Authors and Affiliations
V. Gulkov, A. Makarenko
Features of the system of preliminary nonlinear probing in nonlinear radar
The work is devoted to actual problem of estimation of the impact of density the obstructing nonlinear scatterers (NS) based on the structures "metaloxide-metal" in the nonlinear radar space on the efficiency of usage p...
Development and prototyping of impedance CT scan for measurement of complex resistance distribution
Structure and concepts of impedance CT scan for complex resistance distribution measurements of EIT section are proposed. The prototype of the CT scanner and the results of modeling are represented. Tomograph allows the...
The Field Of Equivalent Some Numeral Methods
This paper describes some properties of methods for numeral solving partial differential equations. A number of identities are proved to show there are regions of equivalency for finite differences methods and finite ele...
Open type coaxial sensor. Integral equation of the electric field in the aperture plane
Introduction. The open end of a coaxial line has good prospects of usage as a sensor for devices of flexi monitoring of parameters of materials in the microwave range. Its exact mathematical description requires the defi...
Increased noise signal processing in incoherent radar systems
Introduction. The work is devoted to the method of increasing coherence and noise immunity pulse radar systems with incoherent sources probing signals. Problem. Incongruities between a resolution and a range of pulsed ra...