# IEEE Transactions on Circuits and Systems I: Regular Papers

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Displaying Results 1 - 24 of 24

Publication Year: 2007, Page(s):C1 - C4
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• ### IEEE Transactions on Circuits and Systems&mdash;I: Regular Papers publication information

Publication Year: 2007, Page(s): C2
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• ### Outgoing Editorial

Publication Year: 2007, Page(s):2585 - 2589
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• ### In Memoriam: M. Robert Aaron (1922&ndash;2007)

Publication Year: 2007, Page(s):2590 - 2591
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• ### The Effect of Mismatches and Delay on the Quadrature Error of a Cross-Coupled Relaxation Oscillator

Publication Year: 2007, Page(s):2592 - 2598
Cited by:  Papers (11)
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Cross-coupled relaxation oscillators can produce two highly accurate quadrature output signals (Verhoeven, 1992). We present a high-level model of these oscillators in terms of circuit parameters, from which we obtain explicit equations for duty-cycle, oscillation frequency, and quadrature error. They show the influence on the oscillator performance of component mismatches and other nonideal effec... View full abstract»

• ### Mismatch Insensitive Double-Sampling Quadrature Bandpass$\Sigma\Delta$Modulation

Publication Year: 2007, Page(s):2599 - 2607
Cited by:  Papers (15)
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In a double-sampling quadrature bandpass sigma-delta modulator, path mismatch between the double-sampling branches and between the I/Q paths occurs. In this paper, an analytical study is presented which shows that this causes quantization noise and input signals to fold from the image band into the signal band and that this also results in a self-image component. To reduce the folding from the ima... View full abstract»

• ### An Integrated System for Simultaneous, Multichannel Neuronal Stimulation and Recording

Publication Year: 2007, Page(s):2608 - 2618
Cited by:  Papers (39)  |  Patents (5)
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Precision electronics that provide multi-electrode stimulation and recording capabilities are an important tool for the experimental study of neuronal development and plasticity. Towards this end, we present a custom analog integrated circuit (IC), fabricated in a 0.35-mum process, incorporating stimulation buffers and recording preamplifiers for multiple electrodes onto a single die. The architec... View full abstract»

• ### A Fuzzy-Based Learning Vector Quantization Neural Network for Recurrent Nasal Papilloma Detection

Publication Year: 2007, Page(s):2619 - 2627
Cited by:  Papers (4)
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The objective of this paper is to develop a complete solution for recurrent nasal papilloma (RNP) detection. Recently, Gadolinium-enhanced dynamic magnetic resonance imaging (MRI) has been developed and widely used in the clinical diagnosis of RNP. Because the response of RNP regions in Gadolinium-enhanced MR images is different from the response of normal tissues, the difference between the dynam... View full abstract»

• ### Maximum Sequence Length MASH Digital Delta–Sigma Modulators

Publication Year: 2007, Page(s):2628 - 2638
Cited by:  Papers (62)  |  Patents (1)
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This paper presents a modified structure for the first-order digital delta-sigma modulator (DDSM) which yields the maximum sequence length (N) for all constant digital inputs and for all initial conditions. Using this structure, MultistAge noise-SHaping (MASH) DDSMs are developed which, for a constant input, always have a sequence length of Nlregardless of the initial conditions and inp... View full abstract»

• ### On the Implicit Anti-Aliasing Feature of Continuous-Time Cascaded Sigma–Delta Modulators

Publication Year: 2007, Page(s):2639 - 2645
Cited by:  Papers (25)  |  Patents (1)
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This paper deals with one of the most outstanding advantages of continuous-time (CT) sigma-delta modulators compared to their discrete-time counterparts: the implicit anti-aliasing feature (AAF). Although inherent in any CT architecture, analysis of anti-aliasing properties has mostly been restricted to single-stage modulators in the past. In this contribution, extensions on analysis methods for t... View full abstract»

• ### A Nonlinear Transient Analysis of Regenerative Frequency Dividers

Publication Year: 2007, Page(s):2646 - 2660
Cited by:  Papers (10)
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This paper introduces a nonlinear analysis of tuned regenerative dividers that explores into the transient behavior of the system. Broadly, two such divider implementations have been dealt with, tuned regenerative dividers and injection locked dividers. A detailed nonlinear analysis based on the application of Stroboscopic concept and the first-order perturbation method is used to derive closed-fo... View full abstract»

• ### A Fully Digital Time-Domain Smart Temperature Sensor Realized With 140 FPGA Logic Elements

Publication Year: 2007, Page(s):2661 - 2668
Cited by:  Papers (47)  |  Patents (2)
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To explore the possibility of soft intellectual property implementation, a fully digital smart temperature sensor without any full-custom device is proposed for painless VLSI or system-on-chip integrations. The signal is processed thoroughly in time domain instead of conventional voltage or current domain. A cyclic delay line is used to generate the pulse with a temperature-proportional width. The... View full abstract»

• ### Design of a Tunable Differential Ring Oscillator With Short Start-Up and Switching Transients

Publication Year: 2007, Page(s):2669 - 2682
Cited by:  Papers (12)
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Timing measurements such as jitter and skew in the range of picoseconds, for circuits with multigigahertz clocks or multigigabit-per-second serial communication interfaces are common. A Vernier-oscillator-based time-to-digital converter (TDC) is a circuit that allows picosecond-timing measurements by means of two tunable oscillators. In such a circuit, the oscillator jitter, tuning response, start... View full abstract»

• ### Design and Performance Analysis of a Unified, Reconfigurable HMAC-Hash Unit

Publication Year: 2007, Page(s):2683 - 2695
Cited by:  Papers (10)  |  Patents (2)
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Hash functions are important security primitives used for authentication and data integrity. Among the most popular hash functions are MD5, SHA-1, and RIPEMD-160, which are all based on the function MD4. This similarity can be exploited for designing a unified engine to perform all three hash functions. Hash message authentication code (HMAC) is a shared-key security algorithm that uses these hash... View full abstract»

• ### Self-Checking Carry-Select Adder Design Based on Two-Rail Encoding

Publication Year: 2007, Page(s):2696 - 2705
Cited by:  Papers (33)  |  Patents (1)
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Carry-select adders are one of the faster types of adders. This paper proposes a scheme that encodes the sum bits using two-rail codes; the encoded sum bits are then checked by self-checking checkers. The multiplexers used in the adder are also totally self-checking. The scheme is illustrated with the implementation of a 2-bit carry select adder that can detect all single stuck-at faults on-line; ... View full abstract»

• ### Analytical Design Equations for Class-E Power Amplifiers

Publication Year: 2007, Page(s):2706 - 2717
Cited by:  Papers (69)  |  Patents (4)
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This paper presents the analytical solution in time domain for the ideal single-ended class-E power amplifier (PA). Based on the analytical solution a coherent noniterative procedure for choosing the circuit parameters is presented for class-E PA's with arbitrary duty-cycle and finite dc-feed inductance (e.g., continuously ranging from class-E with small finite drain inductance to class-E with RF ... View full abstract»

• ### Symmetric Structures for Odd-Order Maximally Flat and Weighted-Least-Squares Variable Fractional-Delay Filters

Publication Year: 2007, Page(s):2718 - 2732
Cited by:  Papers (62)
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Our previous work has shown that coefficient symmetry can be exploited for designing high-accuracy and low-complexity even-order variable fractional-delay (VFD) filters. The objectives of this paper are twofold; One is to derive a coefficient symmetry for odd-order VFD filters, and then formulate a closed-form weighted-least-squares (WLS) design. Exploiting the coefficient symmetry along with diff... View full abstract»

• ### Averaging and Cancellation Effect of High-Order Nonlinearity of a Power Amplifier

Publication Year: 2007, Page(s):2733 - 2740
Cited by:  Papers (10)  |  Patents (4)
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Nonlinear distortion of a power amplifier (PA) due to the nonlinear input-output transfer function is studied. The high-order nonlinearity or Fourier components of the output, due to the mixing of input signals, are found to be related to an average integral related to the transfer function, thus giving insight to the cancellation effect of the nonlinearity. A simple formula has been derived to re... View full abstract»

• ### Fast Block Center Weighted Hadamard Transform

Publication Year: 2007, Page(s):2741 - 2745
Cited by:  Papers (9)  |  Patents (1)
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Motivated by the Hadamard transforms and center weighted Hadamard transforms, a new class of block center weighted Hadamard transforms (BCWHT) are proposed, which weights the region of midspatial frequencies of the signal more than the Hadamard transform. Based on the Kronecker product, direct sum operations, the identity matrix and recursive relations, the proposed one and 2-D fast BCWHTs algorit... View full abstract»

• ### 2008 IEEE International Symposium on Circuits and Systems-engineering the environmental revolution (ISCAS 2008)

Publication Year: 2007, Page(s): 2746
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• ### IEEE Transactions on Circuits and Systems&mdash;I: Regular Papers Information for authors

Publication Year: 2007, Page(s): 2747
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Publication Year: 2007, Page(s): 2748
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• ### 2007 Index IEEE Transactions on Circuits and Systems I: Regular Papers Vol. 54

Publication Year: 2007, Page(s):2749 - 2784
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• ### IEEE Circuits and Systems Society Information

Publication Year: 2007, Page(s): C3
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## Aims & Scope

The theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing.

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Andreas Demosthenous
Dept. Electronic & Electrical Engineering
University College London
London WC1E 7JE, UK