IC Discrete-Analog Correlators Accuraccy Improvements
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2017, Vol 0, Issue 70
Abstract
Some variants to improve accuracy of the integrated circuits of asynchronous digital-analog correlators with a binary impulse response are discussed. Possibility of signal processing with an arbitrary impulse response in binary form is presented. Each variant of the asynchronous programmable correlators structure have been constructed upon parallell channels. Each channel consists of two quadrature parts. It has SIN-code register, COS-code register and selector register for sample-hold input signal operations to load signal samples into static parallel analog cells. Each correlator channel has weight. Master channel has weight 1. Next has weight ½ etc. according to pulse function binary code.. In the first correlator case the input voltage was been scaled from channel to channel, in the second – output signals has been divided according to bit pulse function. The third case have been realized when each channel scaled supply parallel analog memory current. It have supplied maximum signal/noise ratio in signal processing. The main meaning is the output resistance analog parallel memory is low. All three variants of realization have tested. The best result was obtained in case when current of the parallel analog memory have been scaled. The output response have been discovered when input signal was equal 20 mV with input noise 1 V. The master clock was equal 80 MHz. The reference code had long of 1024 points for four parallel channels analog memory. It is noted the modern design must be done to increase the master clock up to 800 MHz. It is noted as well the new correlator can be build with scaled IC topological components for currents weighting. This way the MOS-transistor is in a steep area of CVC.
Authors and Affiliations
L. Pavlov
Keywords
Related Articles
- EP ID EP308206
- DOI 10.20535/RADAP.2017.70.37-42
- Views 61
- Downloads 0
Model of the Two-Resonator Monolithic Metal-Dielectric Filter
Mathematic model of the two-resonator monolithic metal-dielectric filter are described. This model describes the amplitude frequency characteristic both in band-pass and stop-pass.
Evaluating Cramer-Rao Bound for 2D direction-finding via planar antenna arrays
Evaluation of angular coordinates of radio sources is a major research interest and is mainly used for the separation of objectives. The configurations used by antenna arrays, which have been studied mainly concerned uni...
Analysis of the behavior of the Lyapunov function in the optimization of analog circuits
The process of optimization of analog circuits is defined mathematically as the dynamic controllable system. Thus the problem of minimization of processor time can be set forth as a task of minimization of time of transi...
Effect of acceleration in optimization of the electronics circuits
An additional acceleration effect has been analyzed for the electronic circuit optimization process. This effect has been appeared due to the different behavior of the design trajectories whenever the vector of the contr...
Identification of a semiconductor by facility of the nonlinear location on two harmonicas
In article is brought theoretical explanation of a experimentally received effect of the occurrence the negative differential resistance on the volt-ampere characteristic of a diode structures at influence upon them comp...