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The conductivity and low frequency noise of n-and p-type Si nanowire arrays are measured in humid and dry environments. It was found that the conductivity increases for both n- and p-type arrays in a humid environment. The low frequency noise characteristics indicate a change in the carrier transport process from noise governed by trapping processes at the interface in a humid environment to noise...
Low noise amplifier (LNA) is used to amplify the received low power RF signals. A narrowband LNA is designed at the center frequency of 12.7 GHz with a gain of 10 dB, bandwidth of 72 MHz and noise figure of 3 to 4 dB. The design methodology required the analysis of the transistor, stability check and proper matching network selection for input and output. Ideal microwave amplifier equations are used...
This paper presents an approach for the identification of minimum-phase autoregressive moving average (ARMA) systems in the presence of additive noise. For the identification of the AR part of an ARMA system, unlike conventional correlation based methods, we propose to employ a once-repeated autocorrelation function (ORACF) of the observed noisy signal which is capable of reducing the effect of additive...
This paper presents an identification approach for the minimum-phase autoregressive (AR) systems in the presence of heavy noise based on a repeated autocorrelation function (RACF) of observed data. It is shown that RACF retains poles of the original system and in noisy environment if it is used instead of single ACF in the modified least-squares Yule-Walker equations the effect of additive noise can...
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