By Topic

# Electronics Letters

## Filter Results

Displaying Results 1 - 25 of 41
• ### In brief

Publication Year: 2014, Page(s): 1034
| PDF (3175 KB)
• ### Interview

Publication Year: 2014, Page(s): 1034
| | PDF (3823 KB)

Dr Petre Teodosescu from the Technical University of Cluj-Napoca, Romania, talks to us about the research interests behind the paper 'Resonant LED driver with inherent constant current and power factor correction', page 1086. View full abstract»

• ### Microwave multi-tool

Publication Year: 2014, Page(s): 1035
| | PDF (3342 KB)

A resonator element that can simultaneously act as both a filter and antenna has been developed as a step towards creating PROMFAs - the microwave circuit equivalent of an FPGA. View full abstract»

• ### Knee-deep sensing

Publication Year: 2014, Page(s): 1036
| | PDF (3306 KB)

A new, non-invasive technique to track the motion of knee bones in 3D with a very high precision has been presented by researchers in Australia. By employing a single-element ultrasound sensor and a fast image registration technique, the team of collaborating researchers from University of New South Wales, University of Canberra and Canberra Hospital achieved sub-millimetre precision, which is ess... View full abstract»

• ### Wideband unidirectional circularly polarised slot array with integrated feeding network

Publication Year: 2014, Page(s):1039 - 1040
Cited by:  Papers (3)
| | PDF (415 KB)

A wideband planar unidirectional circularly polarised slot array is proposed. The slot array has a truly planar structure where the feeding network is integrated with the radiating elements on the same substrate, which makes it low cost and easy to fabricate. The measured result shows that the proposed array obtains an impedance bandwidth of 33.8% and an axial ratio bandwidth of 24.5%. The propose... View full abstract»

• ### Head and hand detuning effect study of narrow-band against wide-band mobile phone antennas

Publication Year: 2014, Page(s):1040 - 1042
Cited by:  Papers (1)
| | PDF (776 KB)

Wide-band (WB) and narrow-band (NB) antennas in terms of performance are compared, when interacting with the user's right head and hand (RHH). The investigations are done through experimental measurements, using standardised head phantom and hand. It is shown that WB antennas detune more than NB antennas, but the drop in efficiency, when placed in RHH position, is similar for both antennas. View full abstract»

• ### High-frequency radiating element and modified 3 db/90° electronic shifting circuit with circular polarisation for broadband reflectarray device cells

Publication Year: 2014, Page(s):1042 - 1043
Cited by:  Papers (2)
| | PDF (504 KB)

The design of a high-frequency radiating element plus a broadband shifting circuit for reflectarray device cells is provided. The cell design is based on modified broadband 3 dB/90° reflecting circuit interlacing polarisation, along with a multilayered planar radiating element. The basics of the structure are to capture the signal at each cell of the reflectarray, to introduce the proper ph... View full abstract»

• ### Wideband hook-shaped circularly polarised antenna

Publication Year: 2014, Page(s):1043 - 1045
Cited by:  Papers (6)
| | PDF (704 KB)

A circularly polarised (CP) wideband hook-shaped microstrip fed patch antenna is presented. The wideband CP property for the proposed antenna is achieved by the hook-shaped branch in the ground plane and inverted asymmetric arm L-shaped microstrip fed. With an optimised dimension of the proposed antenna parameter, the experimental results show that the antenna has a 10 dB impedance bandwidth of 1.... View full abstract»

• ### Numerical simulation of electromagnetic field distribution induced in brain by electrical stimulation

Publication Year: 2014, Page(s):1045 - 1047
| | PDF (361 KB)

Deep brain stimulation (DBS) is widely used for the treatment of various neurological diseases such as Parkinson's disease and tremors. Owing to the inherent limitations of the imaging modalities, physicians have a difficulty in the diagnosis of the exact response to the brain tissues during stimulation. Recent magnetic resonance (MR)-based electrical impedance tomography (MREIT) enables estimatio... View full abstract»

• ### Precision analysis of single-element ultrasound sensor for Kinematic analysis of knee joints

Publication Year: 2014, Page(s):1047 - 1048
| | PDF (226 KB)

Measuring the relative motion of the femur and tibia in a knee joint currently requires tantalum beads to be implanted into the bones. These beads appear as high-intensity features in radiographs and can be used for precise kinematic measurements. This procedure imposes a strong coupling between accuracy and invasiveness. Advances in ultrasound (US) sensor technology and the availability of micro-... View full abstract»

• ### Sensing probe for 3??6 GHz microwave imaging systems

Publication Year: 2014, Page(s):1049 - 1050
Cited by:  Papers (1)
| | PDF (631 KB)

A sensing probe for medical imaging diagnostic systems is presented. The proposed probe consists of a double-ridged waveguide (DRWG) filled with dielectric ceramic and an aperture with a tapered ridge. The DRWG is used to suppress higher-order mode radiations in the rectangular waveguide. The proposed probe is designed for broadband sensing in an immersion liquid with a complex dielectric constant... View full abstract»

• ### Constant twiddle factor multiplier sharing in multipath delay feedback parallel pipelined FFT processors

Publication Year: 2014, Page(s):1050 - 1052
Cited by:  Papers (1)
| | PDF (348 KB)

A new constant twiddle factor multiplier sharing method in parallel pipelined fast Fourier transform (FFT) processors based on a multipath delay feedback architecture which consists of multiple single-path delay feedback datapaths is presented. The proposed method exploits constant twiddle factor multiplier relocation which moves a constant twiddle factor multiplier into a feedback path based on t... View full abstract»

• ### Design of ternary clock generator

Publication Year: 2014, Page(s):1052 - 1054
| | PDF (331 KB)

A ternary clock generator (TCG) is proposed to settle its shortage. The TCG is implemented at the switch level with a simple structure of 24 MOS transistors and simulated at the layout level using the HSPICE software with TSMC 0.18 μm CMOS technology, showing that it works properly. The analyses show that the proposed TCG not only can output a ternary clock of high quality, meeting the cloc... View full abstract»

• ### Small-swing domino logic based on twist-connected transistors

Publication Year: 2014, Page(s):1054 - 1056
Cited by:  Papers (1)
| | PDF (552 KB)

A new small-swing domino logic that reduces the signal amplitude by adding twist-connected PMOS and NMOS transistors in the conventional domino logic is presented. The circuit lowers the voltage level of a logic 1' and increases the voltage level of a logic 0' while maintaining the logic threshold at half of the supply voltage. The output swing range of the proposed circuit can be modulated by v... View full abstract»

• ### Energy complementarity featured hybrid discrete geometric method for capacitance extraction of integrated circuits

Publication Year: 2014, Page(s):1056 - 1058
| | PDF (235 KB)

The generalised discrete geometric method (DGM) derived from the discrete exterior calculus is an attractive method to solve partial differential equations. Moreover, the energy complementarity of corresponding dual formulations and dual meshes has been exploited to approximate the extra solutions efficiently. Based on the thinking of duality, this reported work investigated the geometrically proj... View full abstract»

• ### Memory-efficient SURF architecture for ASIC implementation

Publication Year: 2014, Page(s):1058 - 1059
| | PDF (113 KB)

Among the image features for object recognition, speeded up robust features (SURF) have been widely implemented due to their hardware-friendly characteristics and high accuracy. However, because adopting a fully internal memory-based architecture and a field programmable gate array having large memories for a high performance, most of them are infeasible to the application specific integrated chip... View full abstract»

• ### Performance evaluation of large 3D fingerprint databases

Publication Year: 2014, Page(s):1060 - 1061
Cited by:  Papers (2)
| | PDF (175 KB)

Prior to the large-scale deployment of any biometric system it is necessary to have a realistic estimation of its performance. In the domain of fingerprint biometrics, three-dimensional (3D) fingerprint scan technology has been developing very fast. However, there is no 3D fingerprint database publicly available for research purposes. To evaluate the matching performance of 3D fingerprints and the... View full abstract»

• ### Profiling of HEVC encoder

Publication Year: 2014, Page(s):1061 - 1063
Cited by:  Papers (4)
| | PDF (80 KB)

One of the serious challenges facing smartphones and other portable devices nowadays is battery life. A typical smartphone user will be running several applications on the device at any given time, and most of these applications consume plenty of energy. In fact, some of the most energy-consuming applications are those related to video conferencing and streaming. There is a lot of work to improve ... View full abstract»

• ### Robustness of Radon transform to white additive noise: general case study

Publication Year: 2014, Page(s):1063 - 1065
| | PDF (225 KB)

A detailed study is presented on the robustness of the Radon transform to additive white noise for the general case of a rectangular grey-level image. View full abstract»

• ### Compact bandpass filter with improved upper stopband

Publication Year: 2014, Page(s):1065 - 1067
Cited by:  Papers (2)
| | PDF (306 KB)

A compact bandpass filter (BPF) with a wide upper stopband using a short-circuited microstrip coupled-line hairpin resonator is presented. The equivalent transmission-line circuit model is developed to analyse the performances of the proposed filter. The feeding lines are capacitively coupled to the resonator at the point which divides the fingers of the hairpin into two segments at a ratio of 1:2... View full abstract»

• ### Low-power 25.4??33.5 GHz programmable multi-modulus frequency divider

Publication Year: 2014, Page(s):1067 - 1068
Cited by:  Papers (2)
| | PDF (497 KB)

A 25.4-33.5 GHz wideband CMOS programmable multi-modulus divider with low power consumption is demonstrated. For a high operating frequency and low power consumption, a direct injection-locked frequency divider is used as the prescaler and followed directly by a dual-modulus divided-by-8/9 divider without any driving circuits. The dynamic-loading CML D flip-flips are utilised in the dual-modulus d... View full abstract»

• ### Differential broadband filter based on microstrip coupled line structures

Publication Year: 2014, Page(s):1069 - 1070
| | PDF (366 KB)

A coupled line schematic is proposed to build the differential filter featuring broadband, low insertion loss and good common-mode suppression. The proposed filter is composed of four quarter-wavelength coupled lines and four quarter-wavelength microstrip lines. The calculated, simulated and measured results are in good agreement with each other. The differential-mode signal can propagate with low... View full abstract»

• ### In situ integrated tuner approach for load-pull measurement of Si/SiGe:C HBT at 200 GHz

Publication Year: 2014, Page(s):1070 - 1072
| | PDF (405 KB)

Load impedance variations were obtained using an innovative integrated tuner at G-band. The 200 GHz load-pull measurements on a silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) are presented. First, the linearity of the integrated tuner is checked. Then, the main load-pull characteristics are extracted from a 0.13 × 3 μm2 emitter area SiGe HBT. The aim of t... View full abstract»

• ### Mapping smooth profile H-plane rectangular waveguide structures to substrate integrated waveguide technology

Publication Year: 2014, Page(s):1072 - 1074
Cited by:  Papers (1)
| | PDF (588 KB)

The guidelines for mapping rectangular waveguide structures to substrate integrated waveguide (SIW) technology are well understood for structures with straight walls. However, the mapping of a smooth profile structure from rectangular waveguide to SIW technology is not trivial and it needs to be carefully studied. A general procedure for mapping any smooth profile H-plane rectangular wavegu... View full abstract»

• ### Metamaterial absorber-based sensor embedded into X-band waveguide

Publication Year: 2014, Page(s):1074 - 1076
Cited by:  Papers (2)
| | PDF (546 KB)

A novel metamaterial sensor, integrated with an X-band waveguide, is proposed for high-resolution measurements of variations in the dielectric constant and/or the thickness of a superstrate layer that covers a pair of absorber unit cells. Variations in superstrate parameters are potentially caused by physical, chemical or biological factors, and can be detected by measuring the corresponding shift... 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