# IEEE Transactions on Circuits and Systems II: Express Briefs

## Filter Results

Displaying Results 1 - 24 of 24

Publication Year: 2015, Page(s):C1 - C4
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• ### IEEE Transactions on Circuits and Systems—II: Express Briefs publication information

Publication Year: 2015, Page(s): C2
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• ### A Double-Sensing-Margin Offset-Canceling Dual-Stage Sensing Circuit for Resistive Nonvolatile Memory

Publication Year: 2015, Page(s):1109 - 1113
Cited by:  Papers (8)
| |PDF (927 KB) | HTML

Resistive nonvolatile memory (NVM) devices such as spin transfer torque random access memory (STT-RAM) and resistive random access memory are considered to be leading candidates for next-generation memory devices. With technology scaling, the sensing margin (SM) of the resistive NVM devices is significantly degraded because of increased process variation and decreased read current. In this brief, ... View full abstract»

• ### A Self-Calibration Technique for On-Chip Precise Clock Generator

Publication Year: 2015, Page(s):1114 - 1118
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This brief presents a self-calibration technique for on-chip precise clock generator used in the field of power electronics. In this technique, the operating frequency of the power grid is employed as the frequency reference to eliminate the frequency variation of the clock generator introduced by the fabrication process. To demonstrate the effectiveness of this technique, an on-chip relaxation os... View full abstract»

• ### Quantization Noise Cancellation for FDC-Based Fractional-$N$ PLLs

Publication Year: 2015, Page(s):1119 - 1123
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This paper presents a quantization noise cancellation technique for frequency-to-digital converter-based fractional-N phase-locked loops (FDC-PLLs). The technique cancels quantization noise prior to the loop filter so the PLL bandwidth can be increased without a significant phase noise penalty. The paper also presents an FDC-PLL architecture enhancement that achieves the effect of a charge pump of... View full abstract»

• ### Self-Dithering Technique for High-Resolution SAR ADC Design

Publication Year: 2015, Page(s):1124 - 1128
Cited by:  Papers (1)
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In this brief, a high-resolution successive-approximation-register analog-to-digital-conversion architecture for biomedical data acquisition is proposed. A filtered least-significant-bit segment is employed as a dither to improve the resolution. Theoretical analysis and behavioral simulations show that the error of a most-significant-bit segment can be converted into shaped noise if the input sign... View full abstract»

• ### A 0.009–1.4-GHz Frequency Synthesizer With Suppressed Transients During VCO Band Switching

Publication Year: 2015, Page(s):1129 - 1133
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This brief presents a 0.009-1.4-GHz frequency synthesizer that is able to compensate for changes in the frequency tuning range, due to temperature variations, by switching voltage-controlled oscillator (VCO) bands with minimal phase and frequency errors, without cycle slipping and without introducing any phase offsets. This is accomplished by a subthreshold capacitor bank switching circuit that ca... View full abstract»

• ### Variation-Tolerant Sensing Circuit for Spin-Transfer Torque MRAM

Publication Year: 2015, Page(s):1134 - 1138
Cited by:  Papers (4)
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A sensing circuit is described for a spin-transfer torque magnetic random access memory (STT-MRAM). The sensitivity to the variations of magnetic tunneling junction (MTJ) resistance and transistor parameters is reduced by employing the degenerated cross-coupled sensing circuit (DCCSC). The reference cell is also implemented to minimize the variation sensitivity and avoid any read disturbance. The ... View full abstract»

• ### A Parallel-Access Mapping Method for the Data Exchange Buffers Around DCT/IDCT in HEVC Encoders Based on Single-Port SRAMs

Publication Year: 2015, Page(s):1139 - 1143
Cited by:  Papers (5)
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In the High Efficiency Video Coding (HEVC) standard, a notation of the transform unit (TU) is introduced with four different sizes, i.e., 4 × 4, 8 × 8, 16 × 16, and 32 × 32, which results in at least two problems in the use of discrete cosine transform/inversed discrete cosine transform (DCT/IDCT). One is changeable input/output format presented by DCT/IDCT when it deal... View full abstract»

• ### Configurable Folded IIR Filter Design

Publication Year: 2015, Page(s):1144 - 1148
Cited by:  Papers (1)
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This brief proposes an efficient very-large-scale integration architecture for folded configurable infinite-impulse response (IIR) filter design, which is used in modern real-time digital signal processing applications such as loudspeaker equalization. The proposed configurable sixth-order IIR filter is designed with three cascaded second-order IIR filters, and the same is used to perform one sixt... View full abstract»

• ### An Ultralow-Voltage Sensor Node Processor With Diverse Hardware Acceleration and Cognitive Sampling for Intelligent Sensing

Publication Year: 2015, Page(s):1149 - 1153
Cited by:  Papers (4)
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An energy-efficient sensor node processor (SNP) is presented for intelligent sensing in Internet of Things (IoT) applications. To achieve ultralow energy consumption and satisfying performance, the proposed processor incorporates an ARM Cortex-M0 RISC core and diverse hardware accelerators, including discrete wavelet packet transform engine, finite-impulse-response filtering engine, fast Fourier t... View full abstract»

• ### Energy-Efficient Nonvolatile Flip-Flop With Subnanosecond Data Backup Time for Fine-Grain Power Gating

Publication Year: 2015, Page(s):1154 - 1158
Cited by:  Papers (4)
| |PDF (700 KB) | HTML

A nonvolatile flip-flop (NVFF) is proposed, where magnetic tunnel junctions (MTJs) are incorporated into a CMOS flip-flop (FF) to enable nonvolatility. The voltage-controlled magnetic anisotropy (VCMA) effect is utilized to back up the latched data into MTJs before the power supply is turned off. Switching an MTJ through the VCMA effect does not require a dedicated write circuit for data backup, r... View full abstract»

• ### A Robust Multiplicative Watermark Detector for Color Images in Sparse Domain

Publication Year: 2015, Page(s):1159 - 1163
Cited by:  Papers (5)
| |PDF (1283 KB) | HTML

In recent years, digital watermarking has facilitated the protection of copyright information through embedding hidden information into the digital content. In this brief, for the first time, a blind multichannel multiplicative color image watermarking scheme in the sparse domain is proposed. In order to take into account the cross correlation between the coefficients of the color bands in the spa... View full abstract»

• ### Normalized Subband Adaptive Filtering Algorithm With Reduced Computational Complexity

Publication Year: 2015, Page(s):1164 - 1168
Cited by:  Papers (5)
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Subband structures are suitable for improving convergence properties of adaptive filtering algorithms, particularly for colored input signals. This brief proposes a new subband adaptive algorithm with sparse adaptive subfilters, which employs the principle of minimal disturbance with multiple-constraint optimization. A performance analysis is carried out, resulting in an expression for the steady-... View full abstract»

• ### PWL Current-Mode CMOS Exponential Circuit Based on Maximum Operator

Publication Year: 2015, Page(s):1169 - 1173
Cited by:  Papers (5)
| |PDF (375 KB) | HTML

A novel technique to implement an exponential pre-distortion circuit based on a piecewise-linear (PWL) construction method is presented. The technique is based on a maximum operator together with rectified affine functions. The proposed circuit is implemented with current mirrors and a Winner-Take-All circuit, thus achieving a technology-independent exponential circuit with no range limit, ideally... View full abstract»

• ### Design of a Band-Stop Filter for a Space Shuttle Vehicle

Publication Year: 2015, Page(s):1174 - 1178
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Due to the structural coupling of a space shuttle vehicle, the selection of a suitable controller gain has been a difficult task. However, this task is very critical as it will affect the performance of the controller. In this brief, a band-stop filter is constructed by using a combined network of a low-pass filter and a high-pass filter. On this basis, digital processing is carried out using bili... View full abstract»

• ### A Circuit to Eliminate Serial Skew in High-Speed Serial Communication Channels

Publication Year: 2015, Page(s):1179 - 1183
| |PDF (809 KB) | HTML

This brief relates to communication established through high-speed serial links. A serial communication channel can be formed by grouping multiple high-speed serial communication lanes to achieve greater serial bandwidth. Such channels require circuitry to eliminate relative skew across multiple lanes to ensure data integrity in the receiver. Channel bonding is a mechanism used to synchronize seri... View full abstract»

• ### A 200-Mb/s Data Rate 3.1–4.8-GHz IR-UWB All-Digital Pulse Generator With DB-BPSK Modulation

Publication Year: 2015, Page(s):1184 - 1188
Cited by:  Papers (4)
| |PDF (1449 KB) | HTML

A new all-digital impulse radio ultrawideband pulse generator in a 65-nm CMOS technology for a wireless body area network is presented. The system architecture is a delay-based pulse generator that is designed using only logic gates to minimize the power consumption. The system uses a frequency range of 3.1-4.8 GHz and 3 channels with a 500-MHz bandwidth. The maximum data rate of this system is 10... View full abstract»

• ### Architectures for MIMO-OFDM Systems in Frequency-Selective Mobile Fading Channels

Publication Year: 2015, Page(s):1189 - 1193
Cited by:  Papers (3)
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Orthogonal frequency-division multiplexing (OFDM) is used in third and fourth generation and is being planned for fifth-generation (5G) systems. OFDM requires that the received subcarriers be orthogonal. However, various factors, such as residual carrier frequency offset due to Doppler shift in mobile fading channels, can lead to a loss in orthogonality between subcarriers, which results in inters... View full abstract»

• ### Analysis and Design of Mixed-Mode Operation for Noninverting Buck–Boost DC–DC Converters

Publication Year: 2015, Page(s):1194 - 1198
Cited by:  Papers (1)
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A noninverting buck-boost dc-dc converter can work in the buck, boost, or buck-boost mode, but it has been analyzed that operating in the buck-boost mode has the lowest efficiency. However, if the buck-boost mode is excluded, the converter may jump between the buck and boost modes when the input voltage approaches the output voltage. This transition region is called the mixed mode, and larger outp... View full abstract»

• ### A 16–28-W 92.8%-Efficiency Monolithic Quasi-Resonant LED Driver With Constant-Duty-Ratio Frequency Regulator

Publication Year: 2015, Page(s):1199 - 1203
Cited by:  Papers (3)
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This brief presents a monolithic high-voltage light-emitting diode (LED) driver for lighting applications. The LED driver is able to operate at high switching frequency because large switching loss is eliminated by zero-voltage switching. Inductor values are therefore reduced. A constant-duty-ratio frequency regulator (CDFR) is proposed to regulate the LED current, and the small signal characteris... View full abstract»

• ### IEEE Transactions on Circuits and Systems—II: Express Briefs information for authors

Publication Year: 2015, Page(s): 1204
| |PDF (38 KB)
• ### 2015 Index IEEE Transactions on Circuits and Systems II: Express Briefs Vol. 62

Publication Year: 2015, Page(s):1205 - 1236
| |PDF (679 KB)
• ### IEEE Circuits and Systems Society Information

Publication Year: 2015, Page(s): C3
| |PDF (113 KB)

## 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