current information because it is used for the current fecdback loop as well as the proposed compensator Howcvei, the capacitor cui lent generally has a laige ripple cuiient and cannot be directly used for the contioller Theiefore, the lowpass filtei with the second-order Bufferwoith pole locations is used in the proposed scheme Thc capacltor current iq first measured using the Hall effect sens...

--Digital filters can be realized in hardware, software. In general digital filters tend to be more expensive than analog filters.But digital filters can be used to implement complex applications that analog filters cannot. This paper presents the design of a double-precision lowpass direct form Finite Impulse Response (FIR) filter to meet the given specification. Simulation results have been p...

This paper presents a possible usage of the voltage differencing transconductance amplifier (VDTA) for the design of an electronically tunable single-input five-output voltage-mode universal filter. The presented filter is constructed using two VDTAs, two capacitors and two resistors that are all grounded. The circuit simultaneously realizes lowpass (LP), bandpass (BP), highpass (HP), bandstop ...

operation canonical sign digit plays an important roll in processing signal. Advantage of this implementation is to reduce the number of adders in hardware and also increase the speed of operation. Filter bank filters the low resolution information using lowpass filter and high resolution information by using high pass filter. Wavelet coefficient decides the characteristic of filter. In this me...

Evaluating the Schoeffler criterion for Sallen-Key filters leads to expressions having two degrees of freedom and prohibitive complexity. Such expressions are normally solved only after making approximations. We show, using the lowpass filter as an example, how the two degrees of freedom can be separated by a simple non-linear coordinate transform. Exact design equations for the minimum-sensiti...

A simple idea of the frequency transformation where each delay of the original real lowpass filter transfer function is replaced by the same allpass filter allows a lot of flexibility in manipulating the original filter to fit the required specification. The simple cases of real first-order transformations and a very few second-order ones have been suggested by Constantinides in the early 1970s...

Sequence estimation (SE) of narrow-band digital FM signals, such as GMSK or CPFSK, with noncoherent limiter/ discriminator (L/D) and post-lowpass filter detection, was investigated in [1]-[3]. This paper proposes a novel Turbo equalization scheme of GMSK signals, where the iterative decoding between the inner ISI decoder and the outer Recursive Systematic Convolutional (RSC) decoder has been do...

The lowpass systems with minimum higher order moments of the impulse response are presented. The systems have the largest possible energy concentration in time. The optimization of the transfer function parameters is carried out for the functions ranging from the second to the tenth order, with finite zeros. The optimum pole-zero positions suitable for filter design are given together with prop...

This paper presents a technique to obtain a realization for passive ladder networks of the Inverse-Chebyshev lowpass filter with all positive elements. The technique consists in the shifting of transmission zeros to infinity by means of a transformation in the complex frelquency s-plane. The technique allows for multiple frequency shifts until the desired realization is obtained. Results show t...