International Journal of Circuit Theory and Applications

Cover image for Vol. 44 Issue 4

Edited By: Ángel Rodríguez-Vázquez

Impact Factor: 1.254

ISI Journal Citation Reports © Ranking: 2014: 124/249 (Engineering Electrical & Electronic)

Online ISSN: 1097-007X

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Special issue call for papers: Secure lightweight crypto-hardware

New article submission deadline!

Do you want your article to be considered for the special issue "Secure lightweight crypto-hardware"?

The International Journal of Circuit Theory and Applications solicits papers on crypto-hardware at a circuit level to foster this area's active research.

Find out which topics will be included in this special issue and how to submit.

Key Dates

New article submission deadline:15th May 2016

Publication date (tentative): December 2016

Recently Published Articles

  1. Thermal noise analysis of switched-capacitor integrators with correlated double sampling

    Saemin Im and Sang-Gyu Park

    Article first published online: 3 MAY 2016 | DOI: 10.1002/cta.2214

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    In this work, we develop a model to calculate the thermal noise in CDS integrators as functions of circuit parameters such as capacitor sizes and switch resistance. The model includes both the switch noise and the amplifier noise and fully takes into account the effects of the switch resistance on the noise transfer functions. After verifying the validity of the model using SpectreRF simulations, we discuss the results obtained from the model.

  2. Current sensorless control for half-bridge based AC/DC PFC converter with consideration of conduction losses

    Alexander Suzdalenko and Andrii Chub

    Article first published online: 3 MAY 2016 | DOI: 10.1002/cta.2212

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    The power factor correction converter proposed combines simple half-bridge topology and improved current sensorless control algorithm that takes into account conduction losses. These losses influence volt-second balance in the input inductor and result in distorted grid current shape. Experimental results are in good agreement with those obtained with simulation and theoretically. The power factor correction converter proposed features low cost of realization and can be used in consumer equipment for connection to the grid.

  3. Wide-band aperture array using a four-channel manifold-type planar multiplexer and digital 2-D IIR filterbank

    Arindam Sengupta, Arjuna Madanayake, Roberto Gómez-García and Leonid Belostotski

    Article first published online: 2 MAY 2016 | DOI: 10.1002/cta.2213

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    This paper presents a novel mixed-microwave-digital beamformer, where we use radio-frequency (RF) channelizers for spectrum division followed by sub-sampling of the RF sub-bands, which results in extensive reduction of the necessary analog-to-digital converter operative frequency. The RF-channelized array signals are directionally filtered using 2-D digital filterbanks. Prototype hardware realizations and measurement using 65-nm Xilinx field-programmable gate arrays, as well as Cadence RTL synthesis results including gate counts, area-time complexity, and dynamic power consumption for a 45-nm CMOS circuit operating at VDC = 1.1 V, are presented.

  4. A novel electrode-area-weighted method of implementing wavelet transform processor with surface acoustic wave device

    Wenke Lu, Lili Gao and Jingduan Zhang

    Article first published online: 27 APR 2016 | DOI: 10.1002/cta.2217

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    The objective of this research was to investigate the possibility of a novel electrode-area-weighted (EAW) method of implementing wavelet transform processor (WTP) with surface acoustic wave (SAW) devices. The motivation for this work was prompted by a diffraction problem of the WTP using SAW devices. In this study, we present the diffraction problem, the substrate material, and the electrode number of the output IDT as the three key problems, and the solutions to the three key problems are implemented.

  5. A novel active auxiliary circuit for efficiency enhancement integrated with synchronous buck converter

    Anup Kumar Panda, Shiva Sarode and Ramesh Tejavathu

    Article first published online: 27 APR 2016 | DOI: 10.1002/cta.2208

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    1. In this paper, a novel active auxiliary circuit integrated with synchronous buck converter is proposed.
    2. The proposed auxiliary circuit provides zero-current, zero-voltage switching conditions for the main and synchronous switches while providing zero-current condition for the auxiliary switch and diodes.
    3. The additional voltage and current stresses on main, synchronous and auxiliary switches get decimated because of the resonance of the auxiliary circuit that acts for small segment of time in the proposed converter.

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