By Topic

# IEEE Transactions on Circuits and Systems II: Express Briefs

## Filter Results

Displaying Results 1 - 25 of 30

Publication Year: 2008, Page(s):C1 - C4
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• ### IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

Publication Year: 2008, Page(s): C2
| PDF (39 KB)
• ### High-Voltage-Gain CMOS LNA For 6–8.5-GHz UWB Receivers

Publication Year: 2008, Page(s):713 - 717
Cited by:  Papers (14)
| | PDF (466 KB) | HTML

The design of a fully integrated CMOS low noise amplifiers (LNA) for ultra-wide-band (UWB) integrated receivers is presented. An original LC input matching cell architecture enables fractional bandwidths of about 25%, with practical values, that match the new ECC 6-8.5-GHz UWB frequency band. An associated design method which allows low noise figure and high voltage gain is also presented. ... View full abstract»

• ### A Fully Integrated CMOS Active Bandpass Filter for Multiband RF Front-Ends

Publication Year: 2008, Page(s):718 - 722
Cited by:  Papers (20)  |  Patents (1)
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In this paper, design techniques for an integrated RF bandpass filter are discussed. A novel wide-tuning high-Q active bandpass filter utilizing the active inductors is presented. Issues of the active inductor related to Q -enhancement, noise, linearity, and stability are considered. The circuit has been fabricated in an 0.18-mum CMOS process, and the filter occupies the active area of 150 times 2... View full abstract»

• ### Bang–Bang Control Class-D Amplifiers: Power-Supply Noise

Publication Year: 2008, Page(s):723 - 727
Cited by:  Papers (9)
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In this paper, the bang-bang control class-D amplifiers (bang-bang amp) is suggested as an alternative to the incumbent pulsewidth-modulation class-D amp for low voltage power-critical applications, including hearing aids. The effects of power supply noise, qualified by power-supply rejection ratio (PSRR), on two bang-bang amps, bang-bang type-I and type-II, are investigated for low signal bandwid... View full abstract»

• ### Class-D Audio Amplifier Using 1-Bit Fourth-Order Delta-Sigma Modulation

Publication Year: 2008, Page(s):728 - 732
Cited by:  Papers (26)
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We present the design of a single-chip delta-sigma (DeltaSigma) modulation-based class-D amplifier for driving headphones in portable audio applications. The presented class-D amplifier generates output pulse signals using a single-bit fourth-order high-performance DeltaSigma modulator. To achieve a high signal-to-noise ratio and ensure system stability for a large input range, the locations of th... View full abstract»

• ### Analysis and Design of Configurable LNAs in Feedback Common-Gate Topologies

Publication Year: 2008, Page(s):733 - 737
Cited by:  Papers (21)
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A unified description of multiple feedback common-gate low-noise amplifiers (LNAs) is presented, providing analytical expressions for gain, noise figure, linearity, and stability conditions. Moreover, from the theory, a new methodology for LNA optimization is developed. This new approach, called adaptive optimization, uses the ability to reconfigure the feedback network to match the amplifier char... View full abstract»

• ### Design of 60- and 77-GHz Narrow-Bandpass Filters in CMOS Technology

Publication Year: 2008, Page(s):738 - 742
Cited by:  Papers (24)
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This paper investigates the design and implementation of millimeter-wave narrow-bandpass filters in a standard 0.18- m CMOS technology. Filters with a measured 10% 3-dB bandwidth at 60 and 77 GHz are realized in a thin-film microstrip structure by using the lowest metallization layer as a ground plane. The impact of dissipation losses of the filters is also examined. It is found that the metalliza... View full abstract»

• ### Exact Analysis of Three-Phase Rectifiers With Constant Voltage Loads

Publication Year: 2008, Page(s):743 - 747
Cited by:  Papers (19)
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In this paper, an exact solution of a circuit model for a three-phase rectifier with constant-voltage load and AC-side reactance that operates in the continuous conduction mode is presented. Obtained results are compared to the results provided applying sinusoidal approximation, published previously. It is shown that the sinusoidal approximation provides acceptable results at low output voltages, ... View full abstract»

• ### A Constant Frequency Output-Ripple-Voltage-Based Buck Converter Without Using Large ESR Capacitor

Publication Year: 2008, Page(s):748 - 752
Cited by:  Papers (49)  |  Patents (2)
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A constant frequency output-ripple-voltage based CMOS current-mode dc-dc buck converter, providing fast load transient response and reference-tracking speed, is proposed in this paper. Unlike V2 control output-ripple-voltage based buck converter, the proposed buck converter can achieve fast and stable load transient response without relying on ESR value of output capacitor. In addition,... View full abstract»

• ### Component-Efficient Multiphase Switched-Capacitor DC–DC Converter With Configurable Conversion Ratios for LCD Driver Applications

Publication Year: 2008, Page(s):753 - 757
Cited by:  Papers (14)
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A CMOS 3/4-phase switched capacitor dc-dc converter with configurable conversion ratios of 4 times /5 times /6 times /7times is proposed for liquid crystal display driver applications. The 3/4-phase driving scheme requires only 3 off-chip flying capacitors and 5 package pins. The converter core, input voltage monitor, 3/4-phase clock generator and bandgap voltage reference were integrated using a ... View full abstract»

• ### A CMOS Digitally Programmable Universal Current-Mode Filter

Publication Year: 2008, Page(s):758 - 762
Cited by:  Papers (16)  |  Patents (2)
| | PDF (342 KB) | HTML

A new digitally programmable universal current-mode biquad filter is proposed. The filter is based on digitally controlled current followers (DCCFs). It utilizes gains of the DCCFs to provide precise frequency and/or gain characteristics that can be digitally tuned over a wide range. All parameters of the proposed filter can be adjusted independently. Experimental results obtained from a 0.35-mum ... View full abstract»

• ### A Chaotic Peak Current-Mode Boost Converter for EMI Reduction and Ripple Suppression

Publication Year: 2008, Page(s):763 - 767
Cited by:  Papers (13)
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A novel chaotic peak current-mode boost converter is proposed. By deriving its corresponding current mapping function, a thorough analysis of its chaotic behavior is carried out. As demonstrated both in simulations and experiments, the proposed design can effectively reduce electromagnetic interference and suppress ripples of the converter's output, resulting in a better design for power supplies. View full abstract»

• ### Maximum Operating Frequency of Class-E Amplifier at Any Duty Ratio

Publication Year: 2008, Page(s):768 - 770
Cited by:  Papers (17)
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This paper shows that the maximum operating frequency of the class-E power amplifier depends on the transistor duty ratio. The maximum operating frequency increases as the duty ratio decreases under zero-voltage switching and zero-derivative switching conditions at fixed values of the output power, dc supply voltage, and shunt capacitance. View full abstract»

• ### Current-Mode Phase-Locked Loops With CMOS Active Transformers

Publication Year: 2008, Page(s):771 - 775
Cited by:  Papers (3)
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This paper introduces active transformer current- mode phase-locked loops (PLLs). The proposed PLLs replaces the RC loop filter of voltage-mode PLLs with an active transformer loop filter to take the advantage of their large inductance and small silicon area. A current-controlled LC oscillator with active inductors is employed to further reduce silicon area. The sensitivity of the cutoff frequency... View full abstract»

• ### On the Theory and Design of a Class of PR Uniform and Recombination Nonuniform Causal-Stable IIR Cosine Modulated Filter Banks

Publication Year: 2008, Page(s):776 - 780
Cited by:  Papers (4)
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This paper studies the theory and design of a class of perfect reconstruction (PR) uniform causal-stable infinite-impulse response (IIR) cosine modulated filter banks (CMFBs). The design approach is also applicable to the design of PR recombination nonuniform (RN) IIR CMFBs. The polyphase components of the prototype filters of these IIR CMFBs are assumed to have the same denominator so as to simpl... View full abstract»

• ### Design of Near-Allpass Strictly Stable Minimal-Phase Real-Valued Rational IIR Filters

Publication Year: 2008, Page(s):781 - 785
Cited by:  Papers (12)
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In this brief, a near-allpass strictly stable minimal-phase real-valued rational infinite-impulse response filter is designed so that the maximum absolute phase error is minimized subject to a specification on the maximum absolute allpass error. This problem is actually a minimax nonsmooth optimization problem subject to both linear and quadratic functional inequality constraints. To solve this pr... View full abstract»

• ### On Parallelepiped-Shaped Passbands for Multidimensional Nonseparable ${bf M}$th-Band Low-Pass Filters

Publication Year: 2008, Page(s):786 - 790
Cited by:  Papers (1)
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The ldquoshaperdquo of the desired frequency passband is an important consideration in the design of nonseparable multidimensional ( M-D) filters in M-D multirate systems. For M-D Mth-band filters, the passband shape should be chosen such that the Mth-band constraint is satisfied. The most commonly used shape of the passband for M-D Mth-band low-pass filters is the so-called symmetric parallelepip... View full abstract»

• ### On Engineering Education, Superposition, and Commutativity

Publication Year: 2008, Page(s):791 - 792
Cited by:  Papers (1)
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Attention is focused on continuous-space shift-invariant systems with continuous system maps and inputs and outputs that are elements of . Results are described showing that infinite superposition can fail in this important setting, and that continuous shift-invariant linear mappings need not commute with the operation of integration (even when the two composite operations are well defined). View full abstract»

• ### Stability Analysis of 2-D Discrete Systems Described by the Fornasini–Marchesini Second Model With State Saturation

Publication Year: 2008, Page(s):793 - 796
Cited by:  Papers (52)
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A criterion for the global asymptotic stability of 2D discrete systems described by the Fornasini-Marchesini second local state-space model employing state saturation arithmetic is presented. An example shows the effectiveness of the present criterion. View full abstract»

• ### Hopfield Neural Network Based on Estimation of Distribution for Two-Page Crossing Number Problem

Publication Year: 2008, Page(s):797 - 801
Cited by:  Papers (5)
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This paper presents a Hopfield neural network (HNN) combined with estimation of distribution (EDA) for the two-page crossing number problem. In the proposed algorithm, once the network is trapped in local minima, the perturbation based on EDA can generate a new starting point for the HNN for further search, which is in a promising area characterized by a probability model and is not far away from ... View full abstract»

• ### A New Approach to the $L(2,1)$ -Labeling of Some Products of Graphs

Publication Year: 2008, Page(s):802 - 805
Cited by:  Papers (5)
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The frequency assignment problem is to assign a frequency which is a nonnegative integer to each radio transmitter so that interfering transmitters are assigned frequencies whose separation is not in a set of disallowed separations. This frequency assignment problem can be modelled with vertex labelings of graphs. An L(2, 1)-labeling of a graph G is a function f from the vertex set V(G) to the set... View full abstract»

• ### A Neutral-Type Delayed Projection Neural Network for Solving Nonlinear Variational Inequalities

Publication Year: 2008, Page(s):806 - 810
Cited by:  Papers (50)
| | PDF (234 KB) | HTML

A neutral-type delayed projection neural network is proposed to deal with nonlinear variational inequalities. Compared with the existing delayed neural networks for linear variational inequalities, the proposed approach apparently has the larger application domain. By the theory of functional differential equation, a delay-dependent sufficient stability condition is derived. This stability conditi... View full abstract»

• ### LMI-Based Stability Criteria With Auxiliary Matrices for Delayed Recurrent Neural Networks

Publication Year: 2008, Page(s):811 - 815
Cited by:  Papers (10)
| | PDF (147 KB) | HTML

In this note, the global asymptotic stability for delayed recurrent neural networks is addressed with a new Lyapunov-Krasovskii function. New delay-independent linear matrix inequality (LMI)-based conditions for global asymptotic stability are derived. A key feature of the new approach is the introduction auxiliary matrices, which can provide useful and less conservative results. This feature also... View full abstract»

• ### The Response Bounds of Unknown Nonlinear Systems With Sinusoidal Input

Publication Year: 2008, Page(s):816 - 820
Cited by:  Papers (2)
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This paper studies the bounds of the response of a class of nonlinear systems with sinusoidal inputs. The unknown nonlinear system is assumed to have a unique steady-state response for a given input under different initial conditions. The sufficient condition of this assumption is given, and the bounds of the transient response and the steady-state response are derived in the sense of 2-norm and L... View full abstract»

## Aims & Scope

Part I will now contain regular papers focusing on all matters related to fundamental theory, applications, analog and digital signal processing. Part II will report on the latest significant results across all of these topic areas.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief

Chi K. Michael Tse
Dept. of Electronic and Information Engineering
Hong Kong Polytechnic University
Hunghom, Hong Kong
cktse@ieee.org