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# Electronics Letters

## Filter Results

Displaying Results 1 - 25 of 33
• ### In brief

Publication Year: 2012, Page(s): 414
| PDF (96 KB)
• ### Interview

Publication Year: 2012, Page(s): 414
| PDF (112 KB)
• ### A twist in the tail

Publication Year: 2012, Page(s):415 - 416
| PDF (384 KB)
• ### Mirror, mirror

Publication Year: 2012, Page(s): 416
| | PDF (87 KB)

Researchers from Fujitsu Laboratories Ltd in Japan have continued their work towards creating low-power highspeed optical transmitters by reducing the peak driving current in their distributed-refl ector (DR) lasers. By using distributed-Bragg-refl ector mirrors and anti-refl ection coatings in the 1.3 ??m AlGaInAs MQW DR lasers, they were able to achieve 25.8 Gbit/s direct modulation with very lo... View full abstract»

• ### Bridged 'V'-shaped patch antenna for dual-band communication

Publication Year: 2012, Page(s):419 - 420
| | PDF (322 KB)

A bridged V-shaped patch antenna has been designed and fabricated for dual-band communication. The dual-band operation is obtained by placing a bar connecting the two arms at the top of a V-shaped microstrip antenna. Comparison of the return loss performance of a single V-shaped antenna and the bridged V antenna is carried out. Free space radiation pattern measurement is carried out for th... View full abstract»

• ### Compact bent slot antenna for 2.45 GHz band

Publication Year: 2012, Page(s):420 - 422
Cited by:  Papers (1)
| | PDF (447 KB)

A compact slot antenna fed by a coplanar waveguide (CPW) is introduced. A T-shaped tuning stub is inserted inside a narrow rectangular slot in order to obtain impedance matching with the CPW feed line. The antenna size is reduced by bending the slot. A bent slot antenna for a 2.45 GHz ISM band is designed and experimentally tested. The size of the fabricated antenna is only 18 by 20 mm. Experiment... View full abstract»

• ### Electrically tunable small microstrip antenna using interdigital plate loading for telemetry sensor applications

Publication Year: 2012, Page(s):422 - 423
Cited by:  Papers (2)
| | PDF (230 KB)

An electrically tunable small microstrip antenna for telemetry sensor applications in the UHF band (425 MHz) is presented. The proposed antenna is miniaturised by loading horizontal interdigital plates at both radiating edges. Varactor diodes are installed between the radiating edges and the ground plane to control the resonant frequency by adjusting the DC bias asymmetrically. The designed antenn... View full abstract»

• ### Exact and simple calculation of mutual impedance for coplanar-skew dipoles

Publication Year: 2012, Page(s):423 - 425
Cited by:  Papers (2)
| | PDF (258 KB)

A novel analysis method to calculate the mutual impedance between two dipoles for a coplanar-skew configuration is presented. An analytic solution using the concept of the effective length vector is derived. The proposed analysis method provides an exact, simple, and intuitional solution together with excellent numerical results. View full abstract»

• ### Miniaturised dual-band artificial magnetic conductor with reduced mutual coupling

Publication Year: 2012, Page(s):425 - 426
Cited by:  Papers (9)
| | PDF (302 KB)

Presented is a novel design of an artificial magnetic conductor surface implementing a dual-band performance with a miniaturised unit cell of λ/23 and dual-band separation of up to 118 MHz, at 430 MHz. Miniaturisation is achieved by loading the AMC with lumped components. A wideband monopole antenna was fabricated and tested over the proposed AMC surface to validate the approach and demonst... View full abstract»

• ### Triple-slot phase-shifting cell loaded with one variable capacitance for reflectarray applications

Publication Year: 2012, Page(s):426 - 427
Cited by:  Papers (2)
| | PDF (296 KB)

A new linearly polarised phase-shifting cell for reflectarray applications is presented. It consists of three parallel rectangular slots etched in a ground plane and loaded with a combination of variable and fixed capacitances to provide a 2-bit phase-shifter. The proposed cell is fabricated and characterised in C-band using the waveguide simulation approach with four fixed states. View full abstract»

• ### Resampling of ECG signal for improved morphology alignment

Publication Year: 2012, Page(s):427 - 429
Cited by:  Papers (2)
| | PDF (184 KB)

Proposed is a piecewise-uniform resampling technique for an ECG signal. Different waves of a heartbeat signal are resampled at different rates. The proposed method was tested on a large number of ECG signals with high and low sampling resolutions. It has been found that the piecewise-uniform resampling method helps to improve the morphology alignment in general. This improvement is significant (e.... View full abstract»

• ### High-speed phase rotator using resistive interpolation for 3.75-6.9Gbit/s serial-link receiver

Publication Year: 2012, Page(s):429 - 430
| | PDF (438 KB)

A high-speed phase rotator (PR) using simple resistive interpolation is proposed for high-speed serial I/O. It operates from 1.875 to 3.45GHz and generates eight phases, spread over a full 360°, which are divided into 136 equal parts to give a resolution of 2.65°. To demonstrate the effectiveness of the proposed PR, a prototype half-rate 3.75°6.9Gbit/s serial-link receiver is ... View full abstract»

• ### Noise power normalisation: extension of gMsub>m/Id technique for noise analysis

Publication Year: 2012, Page(s):430 - 432
Cited by:  Papers (2)
| | PDF (158 KB)

MOSFET models for deep submicron technologies involve accurate and complex equations not suitable for hand analysis. Although the gm/ID design-oriented approach has overcome this limitation by combining hand calculations with data obtained from SPICE simulations, it has not been systematically used for noise calculations, since the dependence of noise on this parameter is not direct.... View full abstract»

• ### Noise-robust normalised subband adaptive filtering

Publication Year: 2012, Page(s):432 - 434
Cited by:  Papers (1)
| | PDF (297 KB)

Proposed is a robust normalised subband adaptive filter (NSAF) for identifying a highly noisy system. The proposed NSAF reutilises a number of past weight vectors in adaptation, whereas the classical NSAF relies only on the immediately previous weight vector. A new constrained optimisation criterion is formulated so as to minimise the sum of the squared Euclidean norms of the changes between the w... View full abstract»

• ### Adaptive selection of model histograms in block-based background subtraction

Publication Year: 2012, Page(s):434 - 435
| | PDF (137 KB)

An adaptive block-based background modelling technique is proposed whereby the optimal number of model histograms is selected. The dynamic nature of a background tends to vary the pool of model histograms when capturing all possible scenes. Proposed is a novel method that recursively estimates the model weights, thereby continuously adjusting the number of histograms to robustly capture only the e... View full abstract»

• ### Soft-magnetic-film based metamaterial absorber

Publication Year: 2012, Page(s):435 - 437
| | PDF (272 KB)

High conductivity is the main obstacle for the application of magnetic metallic film as an effective electromagnetic wave absorber. To overcome the obstacle, characteristics of metamaterial are introduced to the design of the soft-magnetic-film based absorber. In the presented approach, the film functions as both a conduction coil and a magnetic absorber. Conductivity is employed to generate reson... View full abstract»

• ### Low insertion loss K-band BPF using parallel-coupled air-suspended microstrip lines on anodised aluminium substrate

Publication Year: 2012, Page(s):437 - 438
| | PDF (292 KB)

A K-band bandpass filter (BPF) using a parallel-coupled air-suspended microstrip on an anodised aluminium substrate has been demonstrated. The air-suspended structure can be easily fabricated by exploiting the vertical etching property of anodised aluminium oxide. To compare the air-suspended microstrip with conventional microstrips, insertion losses of the coupled lines were calculated using semi... View full abstract»

• ### Miniaturisation of artificial magnetic conductors using split ring resonator loading

Publication Year: 2012, Page(s):439 - 440
| | PDF (178 KB)

An artificial magnetic conductor (AMC) with split ring resonator (SRR) loading is proposed. The SRR loading is realised on a planar structure using three dielectric layers. The proposed AMC can be designed to have much lower resonant frequency compared to a conventional mushroom-type AMC with the same unit cell size. View full abstract»

• ### Piezoelectric transducer-controlled tunable hairpin bandpass filter

Publication Year: 2012, Page(s):440 - 441
| | PDF (281 KB)

A piezoelectric transducer (PET)-controlled tunable hairpin bandpass filter (BPF) is introduced. A dielectric perturber is attached to a PET cantilever beam and suspended above the hairpin BPF. The PET actuator vertically lifts up or pulls down the attached dielectric perturber using a DC bias voltage. The dielectric perturber changes the effective permittivity, causing a variation in the BPF's ef... View full abstract»

• ### Reconfigurable waveguide polariser based on liquid crystal for continuous tuning of linear polarisation

Publication Year: 2012, Page(s):441 - 443
Cited by:  Papers (3)
| | PDF (328 KB)

A reconfigurable waveguide polariser for changing the linear polarisation of the TE11 mode in a circular waveguide is presented. A liquid crystal based twisted nematic cell concept, similar to a liquid crystal display, is innovatively adapted for the tunable RF polariser. The polarisation state can be continuously turned in the range from 90° to -90° with a relatively low ... View full abstract»

• ### Uniplanar bridgeless CPW-to-slotline transition and its application to CPW balun

Publication Year: 2012, Page(s):443 - 444
Cited by:  Papers (3)
| | PDF (205 KB)

A new coplanar waveguide (CPW)-to-slotline transition that is uniplanar and bridgeless is presented. The transition consists of a CPW cross and CPW stubs in which both the even and odd modes are utilised. Based on this transition a uniplanar bridgeless CPW balun has been designed and fabricated. The fabricated balun has 1 dB insertion loss, 0.8 dB maximum amplitude imbalance, 4° maximum pha... View full abstract»

• ### Wideband miniature rat-race using novel phase inverter with fishbone slot-line structure

Publication Year: 2012, Page(s):445 - 446
| | PDF (211 KB)

A new-type of wideband miniature rat-race is presented. The rat-race has been technologically realised by integration of a complementary- conducting-strip transmission line (CCS TL) and a CCS phase inverter (PI) with a fishbone slot-line structure in CMOS 0.18 μm 1P6M process. This unique design of a fishbone slot-line structure operated with a higher slow-wave factor can substantially redu... View full abstract»

• ### DGD monitoring issues in high-speed polarisation multiplexed coherent QPSK systems

Publication Year: 2012, Page(s):446 - 448
Cited by:  Papers (1)
| | PDF (255 KB)

Optical performance monitoring based on digital signal processing (DSP) of a polarisation diverse coherent receiver can allow the estimation of the differential group delay (DGD) of the link fibre. In this reported work, it was found that the DGD estimation can be affected by substantial errors, since the DSP can introduce or leave uncompensated any symbol-time delay between orthogonal polarisatio... View full abstract»

• ### Spectrum retrieval using circular shift procedure in complex Fourier-transform integrated-optic spatial heterodyne spectrometer

Publication Year: 2012, Page(s):448 - 449
| | PDF (248 KB)

Described is a noteworthy characteristic of a spatial heterodyne spectrometer featuring a complex Fourier transformation, namely that the spectrum can be retrieved by using a circular shift procedure when it is distributed over two adjacent spectral ranges. Retrieval is demonstrated by changing the temperature of the array and causing the spectrum to penetrate the adjacent spectral range. View full abstract»

• ### Complex-stress accelerated lifetime test for high-power light-emitting diodes

Publication Year: 2012, Page(s):449 - 450
Cited by:  Papers (5)
| | PDF (239 KB)

To reduce testing time and enhance the accuracy of the lifetime estimation of light emitting diode (LED) packages, a new complex-stress accelerated lifetime test (ALT) is proposed, which is based on the combination of thermal stress and optical stress. An in situ monitoring of electrical, optical and thermal characteristics took place during the ALT. The transient response of voltage change in the... View full abstract»

## 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