If not designed properly, the input section of an analog down-converter can introduce phase noise that can prevail over other noise sources in the system. In the paper we present residual phase noise measurements of a simplified input section of a classical receiver that is composed of various commercially available mixers and driven by an LO amplifier. Introduction A classical design approach ...

Topics 1. Main analog components for receivers-amplifiers-filters-mixers-oscillators 2. Receiver architectures and their properties-superheterodyne principle-direct conversion-DC offsets as a challenging problem-low IF, Weaver-effects of I/Q imbalance 3. Non-idealities and performance meatrics of the analog front-end modules-sensitivity, dynamic range-noise figure-intermodulation distortion, IP...

We carried out a comparative analysis of the algorithms for detecting a rectangular impulse against Gaussian white noise under either authorized or unauthorized access to the transmitted data. We presupposed that for data transmission the binary communication system is used and that the useful information in the data is whether the signal is present or absent. The case is that unauthorized acce...

This paper develops a fully automatic tool for the denoising of partial discharge (PD) signals occurring in electrical power networks and recorded on-site measurements. The proposed method is based on spectral decomposition PD measured signal via joint application short-time Fourier transform singular value decomposition. estimated noiseless reconstructed clever selection dominant contributions...

for many physical systems like vehicles, acceleration can be easily measured for the respective states. however, the outputs are usually affected by stochastic noise disturbance. the mentioned systems are often sensitive to noise and structural uncertainties. furthermore, it is very difficult to estimate the multiple integrals of the signal, acceleration to velocity and velocity to position. in...

In the 1950s and 1960s, dc performance specifications such as integral nonlinearity, differential nonlinearity, monotonicity, no missing codes, gain error, offset error, and drift, etc., were primarily used to characterize data converters. These specifications were adequate during this era, because most early applications (with the exception of PCM and radar, for example) dealt with dc or low f...

A classical bidirectional associative memory (BAM) suffers from low storage capacity and abundance of spurious memories though it has the properties of good generalization and noise immunity. In this paper, Hamming distance in recall procedure of usual asymmetrical BAM is replaced with modified Hamming distance by introducing weighting matrix into connection matrix. This generalization is valid...

This paper presents a single-channel 1.0-GS/s 7-bit pipelined folding and interpolating analog-to-digital converter (PL-FAIADC) used in ultra wide band (UWB) system. An improved joint encoding method is proposed to eliminate the coarse sub-ADC and reduce the power consumption. Double-diode bootstrapped inter-stage switch is adopted to reach the pipelined working and improve the overall efficien...