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Electronics Letters

Issue 1 • Date January 6 2011

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Displaying Results 1 - 25 of 42
  • In brief

    Publication Year: 2011, Page(s): 2
    IEEE is not the copyright holder of this material | PDF file iconPDF (577 KB)
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  • Joining the dots

    Publication Year: 2011, Page(s): 2
    IEEE is not the copyright holder of this material | PDF file iconPDF (140 KB)
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  • On the receiving end

    Publication Year: 2011, Page(s):3 - 4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (423 KB)

    A receiver for portable multi-Gbit/s wireless communications at 60 GHz has been fabricated in 65 nm CMOS by researchers at UCLA in the US. One of the team, Ning-Yi Wang, tells us more. View full abstract»

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  • Editorial

    Publication Year: 2011, Page(s): 4
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (152 KB)

    Welcome to the first issue of Volume 47 and to the second year of the new-look Electronics Letters. With final decisions on manuscripts made in an average of six weeks after decision, publication in print and online two to four weeks later, and an acceptance rate of 25%, Electronics Letters continues to provide a rapid and competitive forum for the latest, significant research advances. This is on... View full abstract»

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  • Compact UWB printed monopole loaded with dielectric resonator antenna

    Publication Year: 2011, Page(s):7 - 8
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (438 KB)

    A novel compact ultra-wideband (UWB) printed monopole loaded with a dielectric resonator (DR) antenna is proposed. The antenna consists of a microstrip fed monopole printed on a substrate with a truncated ground plane loaded with a DR. The bandwidth is enhanced by making an inner groove inside the DR and controlling the slot width of the truncated ground. View full abstract»

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  • Bandwidth-enhanced and polarisation-insensitive metamaterial absorber using double resonance

    Publication Year: 2011, Page(s):8 - 9
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (347 KB)

    A bandwidth-enhanced microwave absorber using a double resonant metamaterial is presented. Its bandwidth is increased compared with previous metamaterial absorbers. The proposed absorber has a thin configuration and its performance is constant for different polarisations. Numerical and experimental results support the proposed absorber's performance. View full abstract»

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  • Ground modified double-sided printed compact UWB antenna

    Publication Year: 2011, Page(s):9 - 11
    Cited by:  Papers (15)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (201 KB)

    A double-sided printed compact antenna for UWB application is proposed. The proposed antenna, having a total size of 30×22 mm, consists of a patch fed by a microstrip line and a partial ground plane. The modified ground plane with triangular shaped slots on its top edge helps to increase the bandwidth of the proposed antenna. The double-sided printed antenna has a bandwidth (VSWR≤2) ... View full abstract»

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  • Loop-type ground antenna using capacitor

    Publication Year: 2011, Page(s):11 - 12
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    A loop-type ground antenna formed by connecting a capacitor between two ground points is described. The resonant frequency of the ground loop is conveniently controlled by changing the capacitance. The proposed loop-type radiator is excited by conventional shorting line loop feeding that may include an inductor. A loop type ground antenna is designed for Bluetooth and Wi-Fi applications. View full abstract»

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  • Low-loss triangular left- and right-handed metamaterials

    Publication Year: 2011, Page(s):12 - 14
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (287 KB)

    A single-sided left- and right-handed metamaterial, which is called a triangular left- and right-handed resonator composed of symmetric paired triangular split-rings and middle wires, is discussed. The frequency dependence of the transmittance shows a right-handed transmission window centred around 9.9 GHz and a left-handed transmission peak around 10.9 GHz, both displaying comparable high transmi... View full abstract»

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  • Mammographic masses classification: novel and simple signal analysis method

    Publication Year: 2011, Page(s):14 - 15
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (223 KB)

    Breast cancer represents the leading cause of fatality among cancers for women and there is still no known way of preventing this pathology. Computer-aided analysis systems could be very helpful to improve both the sensitivity and the specificity. Presented is a computer-aided diagnosis system for malignant/benign masses classification of regions of interest in mammograms based on wavelet transfor... View full abstract»

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  • 65 nm CMOS receiver with 4.2 dB NF and 66 dB gain for 60 GHz applications

    Publication Year: 2011, Page(s):15 - 17
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (299 KB)

    A direct conversion receiver for 60 GHz applications is fabricated in 65 nm CMOS. It consists of three low-noise amplifier gain stages, an RF mixer, a lowpass filter and a three-stage programmable gain amplifier. An overall minimum noise figure (NF) of 4.2 dB and maximum gain of 66 dB is achieved by the receiver occupying a core area of 0.26 mm2 while drawing 36 mA of current from a 1 V... View full abstract»

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  • PSRR-enhanced low-dropout regulator

    Publication Year: 2011, Page(s):17 - 18
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (268 KB)

    A power supply rejection ratio (PSRR) enhancement technique for the low-dropout regulator (LDR) is presented. This proposed LDR with a bandgap reference has been fabricated in a 0.35 μm CMOS process, and its active chip area is 0.1978 mm . From experimental results, the proposed LDR provides a stable output voltage without the output capacitor and achieves over a PSRR of -76 dB at 100 kHz f... View full abstract»

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  • Fast and VLSI efficient binary-to-CSD encoder using bypass signal

    Publication Year: 2011, Page(s):18 - 20
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (81 KB)

    The generation of a canonical signed digit representation from a binary representation is revisited. Based on the property that each nonzero digit is surrounded by a zero digit, a hardware-efficient conversion method using bypass instead of carry propagation is proposed. The proposed method requires less area per digit and the required bypass signal can be generated or propagated with only a singl... View full abstract»

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  • Low-power 4-bit flash analogue to digital converter for ranging applications

    Publication Year: 2011, Page(s):20 - 22
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (369 KB)

    A 4-bit 700 MS/s flash ADC is presented in 0.18 m CMOS. By lowering the kickback noise of the individual comparators it was possible to reduce the power consumption to 4.43 mW. Improved calibration capabilities resulted in an INL and DNL smaller than 0.25 LSB. These low nonlinearities give rise to 3.77 effective number of bits at the Nyquist input frequency and this in turn yields an overall figur... View full abstract»

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  • Simple modelling method of tantalum capacitors

    Publication Year: 2011, Page(s):22 - 23
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (245 KB)

    Tantalum capacitors cannot be well modelled by means of the commonly used series R-L-C network, so other equivalent circuits are required when an accurate model is needed. Proposed is a simple and systematic modelling procedure for tantalum capacitors. A canonical passive network (minimum number of elements) is synthesised from the capacitor impedance magnitude. The model is validated using commer... View full abstract»

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  • Effects of conducted electromagnetic interference on analogue-to-digital converter

    Publication Year: 2011, Page(s):23 - 25
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (183 KB)

    The effects of conducted electromagnetic interference on an analogue-to-digital converter (ADC) are presented by the measurement. The measurement results reveal that the DC shift behaviour of the output conversion is caused by the continuous-wave interference. The DC shift behaviour produces a novel failure criterion for the immunity measurement of the ADC. View full abstract»

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  • Discarding wide baseline mismatches with global and local transformation consistency

    Publication Year: 2011, Page(s):25 - 26
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (255 KB)

    A novel method called global and local transformation consistency constraints, which combines the scale, orientation and spatial layout information of `scale invariant feature transform` (SIFT) features, is proposed for discarding mismatches from given putative point correspondences. Experiments show that the proposed method can efficiently extract high-precision matches from low-precision putativ... View full abstract»

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  • Enhanced motion compensated frame interpolation using object layer inference

    Publication Year: 2011, Page(s):26 - 28
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (321 KB)

    In motion compensated frame interpolation (MCFI), an interpolated frame is produced by placing objects according to their motion estimated between two neighbouring frames. However, multiple motion vectors associated with the background (BG) and foreground (FG) objects can pass through a single location in the interpolated frame. In such motion ambiguity (MA) regions, annoying artefacts can be indu... View full abstract»

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  • Illumination source chromaticity estimation based on spherical co-ordinates in RGB

    Publication Year: 2011, Page(s):28 - 30
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (203 KB)

    Spherical co-ordinates in the RGB colour space provide direct chromatic information. Proposed is a novel method that uses this information for illumination source chromaticity (ISC) estimation. The method has been tested on synthetic images, the ISC of which is known. This allows a quantitative comparison with a state-of-the-art algorithm. The proposed algorithm is an improvement over the competin... View full abstract»

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  • Reducing quantisation loss and improving side information in distributed video coding

    Publication Year: 2011, Page(s):30 - 31
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (94 KB)

    A new architecture combining pixel-domain processing and transform-domain processing in distributed video coding is proposed to reduce quantisation loss. A side information updating algorithm corresponding to the new architecture is also presented. Experimental results demonstrate that the proposed scheme brings up to 2 dB gains in rate-distortion performance without sacrificing encoder complexity... View full abstract»

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  • Rotated constellation demapper for DVB-T2

    Publication Year: 2011, Page(s):31 - 32
    Cited by:  Papers (17)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (217 KB)

    The constellation rotation and cyclic Q-delay technique has been adopted in the second generation terrestrial digital video broadcasting (DVB-T2) standard. It improves the performance under fading channels, but introduces serious complexity problems in the hardware implementation of the demapper. Presented is a simplified demapper scheme that reduces up to 31% the number of required operations wit... View full abstract»

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  • Buffered Clos-network packet switch with per-output flow queues

    Publication Year: 2011, Page(s):32 - 34
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (207 KB)

    Proposed is a buffered Clos-network switch with per-output flow queues in the middle-stage modules to avoid head-of-line blocking of the queues in the middle stage that occurs in Clos-network switches using simple crosspoint-buffered switch modules. It is shown that the proposed switch achieves higher performance than a conventional buffered Clos-network packet switch. View full abstract»

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  • Close-to-capacity performance of extended single parity check product codes

    Publication Year: 2011, Page(s):34 - 35
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (235 KB)

    The empirical performances of extended single parity check product codes, which are very simple and of low complexity, on a binary input additive white Gaussian noise channel by a belief propagation (BP) decoding algorithm, are presented. Simulation results show that the codes can achieve close-to-capacity performance in high code rate. The codes approach the Shannon limit according to the increas... View full abstract»

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  • Dual-tunable hybrid wave hexaferrite–ferroelectric millimetre-wave phase shifter

    Publication Year: 2011, Page(s):35 - 36
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (164 KB)

    A novel electrically and magnetically tunable microwave phase shifter based on forward volume spin wave propagation in a layered structure containing films of oriented barium ferrite (BaM) and polycrystalline ferroelectric barium strontium titanate (BSTO) is proposed. Operating characteristics of the phase shifter are theoretically investigated. It is shown that the hexaferrite-ferroelectric waveg... View full abstract»

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  • High rejection quadruple-mode broadband BPF with source-load coupling

    Publication Year: 2011, Page(s):37 - 38
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (251 KB)

    A compact and high rejection broadband bandpass filter (BPF) with source-load coupling is proposed using the quadruple-mode stub-loaded resonator. Two identical folded open stubs near the centre plane can adjust high resonant frequencies fm3 and fm4 into the desired passband and create two transmission zeros to sharpen the upper skirt and suppress the resonant frequency f... View full abstract»

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Aims & Scope

Electronics Letters is internationally renowned for its rapid communication of new developments and emerging topics across the broad and interdisciplinary field of modern electronics and electrical engineering.

Full Aims & Scope

Meet Our Editors

Editors-in-Chief

Professor Chris Toumazou
Director of the Biomedical Institute
Imperial College, London, UK

Professor Ian White
Head of Photonics Research
University of Cambridge, UK