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# IEEE Transactions on Circuits and Systems

## Filter Results

Displaying Results 1 - 25 of 32
• ### Comments on "An efficient residue to binary converter design" by K.M. Ibrahim and S.N. Saloum

Publication Year: 1990, Page(s):849 - 850
Cited by:  Papers (16)
| | PDF (158 KB)

The commenter points out that equation (3a), A=K2/sup 2n/-K+M, in the above-titled paper (see ibid., vol.35, p.1156-1158, Sept. 1988) is simplified, so that A can be computed without separately computing K.<> View full abstract»

• ### Comments, with reply, on "A new efficient adaptive cascade lattice structure" by M. Tummala and S.R. Parker

Publication Year: 1990, Page(s):858 - 860
| | PDF (361 KB)

In the above-titled paper (see ibid., vol.CAS-34, p.707-711, July 1987) the authors present a least-mean-square (LMS)-based Approach for adapting a canonical cascade lattice structure, in order to perform general-purpose adaptive finite impulse response (FIR) filtering tasks. The commenters discuss the tradeoffs involved in choosing between this approach and competing techniques. The authors essen... View full abstract»

• ### Comments on "The general recurrence relation for arbitrary rational transformation of polynomials" by S. Erfani et al

Publication Year: 1990
| | PDF (114 KB)

The authors correct the omission in the above-named work of a closely related reference by V.V. Bapesware Rao and V.K. Aatre (see Proc. IEEE, vol.62, p.1028-1029, July 1974). They were not aware that the problem of rational polynomial transformation was tackled by Bapesware Rao and Aatre. They point out, however, that their own derivation is more general, much simpler, and leads to a general algor... View full abstract»

• ### On a determinant expansion in the theory of two-transistor circuits

Publication Year: 1990, Page(s):864 - 866
Cited by:  Papers (3)
| | PDF (172 KB)

It is shown that for any two-transistor circuit, at most one term in a well-known determinant expansion can be negative. This leads to more efficient numerical and theoretical analyses of such circuits, regarding the presence of multiple DC equilibria View full abstract»

• ### Application of interval analysis for circuit design

Publication Year: 1990, Page(s):803 - 807
Cited by:  Papers (17)
| | PDF (344 KB)

In top-down circuit design, a principal task is to partition and map design constraints on a normal operating range of a collection of subblocks. This problem is propagated through each hierarchical level until the solutions for all levels are found. This top-down parameter assignment and instantiation of subblocks may eventually break down at some level due to an unrealizable circuit. Then the pr... View full abstract»

• ### Reciprocity and antireciprocity of resistive N-ports: a brackets approach

Publication Year: 1990, Page(s):860 - 863
Cited by:  Papers (1)
| | PDF (296 KB)

Using the concept of brackets, the author proposes to treat the reciprocity and antireciprocity of resistive n-ports as a kind of commutativity of controlling variables. On the basis of the brackets formalism, it is shown that, at least locally, both reciprocity and antireciprocity provide the existence of weakly hybrid representation. In particular, reciprocity and antireciprocity of an ... View full abstract»

• ### An universal input and output RNS converter

Publication Year: 1990, Page(s):799 - 803
Cited by:  Papers (15)  |  Patents (2)
| | PDF (408 KB)

A systolic architecture is presented which is capable of both input and output conversion with a throughput equal to that of the fast residue number system (RNS) processes of addition and multiplication. The converter can be used with an arbitrary RNS (within certain realization-imposed limits). An actual anticipated VLSI layout is described that will be programmable for RNSs with up to eight modu... View full abstract»

• ### A probabilistic approach to dynamic power system security

Publication Year: 1990, Page(s):787 - 798
Cited by:  Papers (17)
| | PDF (1020 KB)

The problem of dynamic power system security is investigated. A probabilistic approach is chosen, and an appropriate power system model is developed for analyzing the dynamic behavior of the different operational modes of the system. The model includes the transients induced by primary and secondary disturbance events. They are modeled by switches in the model whose states depend on the instantane... View full abstract»

• ### A successive double-bit approximation technique for analog/digital conversion

Publication Year: 1990, Page(s):856 - 858
Cited by:  Papers (2)  |  Patents (5)
| | PDF (256 KB)

To achieve a higher conversion speed in an analog-to-digital converter (ADC), a modification to the successive approximation technique is proposed. In this, 2 b of digital output are approximated simultaneously instead of 1 b at a time. Simulations and layout of an A/D converter based on the proposed technique have shown an improvement in the conversion speed by a factor of about two while the inc... View full abstract»

• ### Computationally efficient estimation of frequency response and driving point impedances in wide-band analog amplifiers

Publication Year: 1990, Page(s):720 - 728
Cited by:  Papers (12)
| | PDF (672 KB)

An alternative to traditional dominant and lumped-pole mathematical models of a linear analog circuit is proposed for estimation and sensitivity analysis of bandwidth, phase angle, and driving point impedances in wide-band signal processors. The proposed mathematical model, which accounts for transmission zeros and dominant complex pole pairs, is accurate to errors that are usually less than 15%, ... View full abstract»

• ### Adaptive recursive state-space filters using a gradient-based algorithm

Publication Year: 1990, Page(s):673 - 684
Cited by:  Papers (34)  |  Patents (1)
| | PDF (1032 KB)

To aid in the search for better adaptive filter structures, a method is presented to obtain the gradients required to adapt general state-space filters. Unfortunately, the number of computations for this general case is quite high. To reduce the number of computations, two new state-space adaptive filters are introduced. One application where these new structures are shown to be useful is in overs... View full abstract»

• ### The piecewise-linear Lorenz circuit is chaotic in the sense of Shilnikov

Publication Year: 1990, Page(s):766 - 786
Cited by:  Papers (1)
| | PDF (1116 KB)

The authors prove that the piecewise-linear Lorenz circuit is chaotic in the sense of Shilnikov. They first prove the existence of a heteroclinic orbit, and then prove an inequality among the eigenvalues. In addition to a detailed analysis of the piecewise linear dynamics, interval analysis is utilized to prove various inequalities. This novel approach can be applied to many other problems that re... View full abstract»

• ### Integrator neurons for analog neural networks

Publication Year: 1990, Page(s):854 - 856
Cited by:  Papers (11)
| | PDF (236 KB)

It is shown that integrators with saturation can be used as neurons for analog neural networks. A nonincreasing potential function is defined for the network. Computer simulations show that the neural network works well in wider parameter regions. Therefore, it is possible to choose reasonable parameters, for example, to avoid influence of noise of a certain frequency range without degrading perfo... View full abstract»

• ### Digit-serial processing techniques

Publication Year: 1990, Page(s):707 - 719
Cited by:  Papers (88)
| | PDF (1116 KB)

An architecture is presented for hard-wired data-flow algorithms which is based on the transmission of arithmetic data one digit at a time serially, and performance of operations digit-serially on that data. It is shown that digit-serial computation gives rise to particularly efficient chip designs, and that choice of digit-size allows the user to match throughput requirements to specifications. D... View full abstract»

• ### Design of coupling resistor networks for neural network hardware

Publication Year: 1990, Page(s):756 - 765
Cited by:  Papers (8)
| | PDF (904 KB)

The specification of an artificial neural network includes the transformation relating each neuron's output voltage to its input voltage, and a set of coupling weight factors expressing the input voltage of any neuron as a linear combination of the output voltages of other neurons. In analog VLSI chips for direct hardware implementation of these networks, neurons are often represented by amplifier... View full abstract»

• ### On factorization of a subclass of 2-D digital FIR lossless matrices for 2-D QMF bank applications

Publication Year: 1990, Page(s):852 - 854
Cited by:  Papers (16)
| | PDF (276 KB)

The role of one-dimensional (1-D) digital finite impulse response (FIR) lossless matrices in the design of FIR perfect reconstruction quadrature mirror filter (QMF) banks has been explored previously. Structures which can realize the complete family of FIR lossless transfer matrices, have also been developed, with QMF application in mind. For the case of 2-D QMF banks, the same concept of lossless... View full abstract»

• ### Elimination of overflow oscillations in fixed-point state-space digital filters using saturation arithmetic

Publication Year: 1990, Page(s):814 - 818
Cited by:  Papers (62)
| | PDF (412 KB)

An unconventional approach for guaranteeing the nonexistence of zero-input limit cycles in fixed-point state-space digital filters using saturation arithmetic is presented. The approach is based on a passivity' property associated with the multiple saturation nonlinearities. Under certain conditions, the approach specializes to the known approach based on the sector information of the nonlinearit... View full abstract»

• ### Design and DSP-chip implementation of a novel bilinear-LDI digital Jaumann filter

Publication Year: 1990, Page(s):695 - 706
Cited by:  Papers (21)
| | PDF (884 KB)

The design and implementation, on a digital signal processing (DSP) chip, of a novel high-quality recursive digital filter is presented. The proposed digital filter is derived from an equally resistively terminated lossless Jaumann two-port network by using the bilinear-LDI (bilinear lossless discrete integrator) design technique. It has the important practical property that all the inductor-based... View full abstract»

• ### Analysis of class E zero-voltage-switching rectifier

Publication Year: 1990, Page(s):747 - 755
Cited by:  Papers (62)
| | PDF (532 KB)

Analysis of Class E rectifiers offer a novel means of high-frequency high-efficiency rectification. An analysis and experimental results are presented for a class E zero-voltage-switching (lowdv/dt) rectifier. The circuit consists of a diode, a capacitor shunting the diode, and a second-order low-pass output filter. The shunt capacitor shapes the voltage across the diode so that ... View full abstract»

• ### Corrections to Design of two-dimensional digital filters by using the singular value decomposition' (Oct 1987 1191-1198)

Publication Year: 1990, Page(s):850 - 852
| | PDF (244 KB)

In the above-titled paper (see ibid., vol. CAS-34, p.1191-1198, Oct. 1987) there are some errors in Tables I and II. Unfortunately, the computer outputs for the original designs were not saved, and to be able to correct the error, new designs were carried out for certain functions. The new designs are slightly different from the original ones owing to differences in the initialization of the optim... View full abstract»

• ### A new additive decomposition approach for 2-D IIR filters

Publication Year: 1990, Page(s):845 - 847
Cited by:  Papers (1)
| | PDF (184 KB)

A new additive decomposition technique is proposed for two-dimensional (2-D) infinite impulse response (IIR) filters. This approach results in lower-order rational z-domain transfer functions. The decomposition is achieved by a nonlinear optimization technique. A numerical example demonstrates the high numerical accuracy of the achieved results View full abstract»

• ### Analog FIR filters by switched-capacitor techniques

Publication Year: 1990, Page(s):808 - 814
Cited by:  Papers (17)
| | PDF (568 KB)

The implementation of general-purpose FIR (far infrared) filters by stray-insensitive SC (switched capacitor) techniques is addressed. First, a simple building block for an analog tapped delay line is introduced. The proposed cell comprises a single amplifier and is controlled by a multiphase clocking scheme. Then, it is shown how this circuit can be developed into a generic FIR filter cell withou... View full abstract»

• ### Linearization of analog-to-digital converters

Publication Year: 1990, Page(s):729 - 737
Cited by:  Papers (15)  |  Patents (7)
| | PDF (608 KB)

A signal processing technique called threshold tracking is presented; it can improve the linearity of any A/D conversion circuit. The linearization system is described, and the accuracy and signal requirements in the presence of training signal noise are shown. Techniques that can reduce the memory required to implement the linearization system to a level that permits practical realization are dev... View full abstract»

• ### Realization of multidimensional GIC digital filters

Publication Year: 1990, Page(s):685 - 694
Cited by:  Papers (10)
| | PDF (604 KB)

A realization method for multidimensional Nth-order infinite-impulse-response (IIR) digital filters is proposed. A systematic procedure is presented for synthesizing analog reference networks comprising generalized immittance converters, and resistors, which realize M-variable Nth-order transfer functions. Digital-filter structures are then derived from these reference n... View full abstract»

• ### Tridiagonal state-space digital-filter structures

Publication Year: 1990, Page(s):818 - 824
Cited by:  Papers (1)
| | PDF (496 KB)

A synthesis, procedure for tridiagonal state-space structures is presented that yields structures with a reduced number of multipliers and eliminates zero-input and constant-input limit cycles. The output roundoff noise is minimized by optimizing some free parameters. Some design examples are presented illustrating the synthesis procedure View full abstract»