Possibility of the pipelining technique application in a highly nonstationary two-dimensional (2D) frequency-modulated (FM) signals estimation is considered in this paper. The considered design technique allows the implemented filter to overlape in execution unconditional steps performing in neighboring space/spatial-frequency (S/SF) instants and, consequently, to significantly improve executio...

A very low voltage 9th order linear phase baseband switched capacitor (SC) filter has been designed to be used as part of a cellular GSM (Global System Mobile) receiver. A Gaussian-to-6dB filter of the order of seven is chosen and a second order function is added to reduce the group delay variations around. The filter uses a fully differential topology to increase the dynamic range and reduce t...

A novel method for impulse noise suppression in images, based on the pixel-wise S-estimator, is introduced. The S-estimator is an alternative for the well-known robust estimate of variance MAD, which does not require a location estimate and hence is more appropriate for asymmetric distributions, frequently encountered in transient regions of the image. The proposed computationally efficient mod...

This paper describes the first integrated transversal filter for feed-forward equalizers (FFE) operating above 40 Gb/s. Equalization of a 2−1 PRBS over a 9-ft and 6.5-ft cable with SMA connectors is demonstrated on-wafer at 40 Gb/s and 49 Gb/s respectively. The circuit is implemented in a commercial 0.18 μm SiGe BiCMOS process and is based on a differential distributed 7-tap fractionally spaced...

A novel analogue power-efficient 2-D programmable finite impulse response image filter is proposed. This solution is based on the current-mode Gilbert-vector-multiplier operating in the weak inversion region, which allows for ultra low power operation. The main advantage is in the asynchronous and parallel calculation of all pixel values without using any clock generator. The filter is a progra...

This paper shows the existence of Lur’e-Postkinov Lyapunov functions for the generalized multivariable discrete-time Popov criterion. The nonlinearities in the Lur’e system considered here are monotonic, sectorand slope-restricted. We discuss the cases where the nonlinearities are diagonal and non-diagonal. Our derivation is based on the discrete-time Kalman-Yakubovich-Popov (KYP) lemma and the...

odor emission is a common environmental problem in septic tank. the feasibility of using trickling filter to eliminate the malodorous gases from the septic tank was studied. a trickling filter is set up at the outlet of the waste gases of the septic tank, which was attached to the university's cafeteria. in this investigation, the trickling filter system was used, measuring the hydrogen sulfide...

On categorical algebras, we define an idempotent filter as analogous version of Gabriel?s. We also construct topologies on 2-crossed modules algebras and algebras.

This paper initially modifies an original Tow-Thomas (T-T) filter and presents the nodal admittance matrix (NAM) of the T-T filter with orthogonal control of fo and Q. Furthermore, in accordance with the nullor-mirror models of the second generation current-controlled conveyor (CCCII), two different topological classes of the T-T filter, class A and class B filters, are acquired by bracket nota...