# Electronics Letters

## Filter Results

Displaying Results 1 - 25 of 34
• ### In brief

Publication Year: 2012, Page(s): 1030
| PDF (75 KB)
• ### Interview

Publication Year: 2012, Page(s): 1030
| | PDF (88 KB)

My main interests are RF circuits and systems for wireless communication. In the past few years, I??ve been working on individual building blocks for RF transceivers, such as low-noise amplifiers, mixers, oscillators and filters. I enjoy the diversity of RF circuit design because it involves different disciplines like microwave theory, microelectronics, and, my favourite, device physics. Recently,... View full abstract»

Publication Year: 2012, Page(s): 1031
| | PDF (273 KB)

Summary form only given. Researchers from Aalto University in Finland have presented the first experimental demonstration of a dielectric method for hiding objects from electromagnetic fields, or cloaking. Their method relies on simple, conventional dielectric materials, as opposed to complex metamaterials, which makes it practical and straightforward to implement. View full abstract»

• ### Instant recall

Publication Year: 2012, Page(s): 1032
| | PDF (135 KB)

Researchers in France present the first design of a fully non-volatile multi-bit magnetic adder based on domain wall motion. Storing all signals in a non-volatile state to enable true `instant on/off' operation, the design is a step towards non-volatile CPUs. View full abstract»

• ### Programmable and implantable neurostimulator with novel stimulus waveforms for rat models

Publication Year: 2012, Page(s):1035 - 1036
| | PDF (331 KB)

Although the application of electrical neuromodulation has yielded promising results, further studies such as optimising the operational parameters are necessary. Due to the fact that most commercially available stimulators are not suitable for animal experiments in terms of size, weight and structure, a programmable and implantable neurostimulator for treating chronic disorders in freely behaving... View full abstract»

• ### Battery-less ASK/O-QPSK transmitter for medical implants

Publication Year: 2012, Page(s):1036 - 1038
Cited by:  Papers (3)
| | PDF (383 KB)

A battery-less ASK/O-QPSK transmitter is presented using 0.18 μm CMOS technology for medical implants. The 432 MHz transmitter uses an identical signal source of 54 MHz for injection-locked frequency synthesis and RF powering to accomplish battery-less operation. The transmitter exhibits an output power of -15.1 dBm. The phase noises of -112.6 and -116.1 dBc/Hz are achieved at offsets of 10... View full abstract»

• ### 60 GHz CMOS power amplifier with Psat of 11.4 dBm and PAE of 15.8%

Publication Year: 2012, Page(s):1038 - 1039
Cited by:  Papers (1)
| | PDF (216 KB)

A 60 GHz power amplifier (PA) for a direct-conversion transceiver using standard 90 nm CMOS technology is reported. The PA comprises three cascaded common-source stages with inductive load and inter-stage matching. To increase the saturated output power (Psat) and power-added efficiency (PAE), the output stage adopts a two-way power dividing and combining architecture. Instead of the ar... View full abstract»

• ### Complementary DAC topology for reduced output impedance dependency and improved dynamic performance

Publication Year: 2012, Page(s):1039 - 1041
Cited by:  Papers (1)
| | PDF (204 KB)

A complementary current-steering digital-to-analogue converter (DAC) topology is introduced which reduces the impact of the current source finite output impedance on the harmonic distortion. Using both a NMOS and a PMOS current source transistor, the linearity is determined by the output impedance matching of both current sources. Application of this technique reduces the required output impedance... View full abstract»

• ### D-band divide-by-3 injection-locked frequency divider in 65 nm CMOS

Publication Year: 2012, Page(s):1041 - 1042
Cited by:  Papers (1)
| | PDF (238 KB)

A D-band divide-by-3 injection-locked frequency divider (ILFD) is realised in 65 nm CMOS process. The ILFD adopts the dual-injection and current-reused techniques. It achieves the input locking range of 122.4-125.4 GHz and its power consumption is 9.1 mW for a supply of 1.3 V excluding buffers and the biasing circuit. View full abstract»

• ### Low-power design technique for decision-feedback equalisation in serial links

Publication Year: 2012, Page(s):1042 - 1044
Cited by:  Papers (1)
| | PDF (341 KB)

A design technique for performing low-power decision-feedback equalisation for multi-Gbit/s serial links is presented. The technique systematically reduces the capacitive loading on the timing-critical node within the feedback loop of the equaliser. Based on the proposed technique, an architecture capable of both equalisation and digitisation of the received data is presented. Power efficiency of ... View full abstract»

• ### Pipelined phase accumulator using sequential FCW loading scheme for DDFSs

Publication Year: 2012, Page(s):1044 - 1046
Cited by:  Papers (4)
| | PDF (335 KB)

Presented is a low-power small-area pipelined phase accumulator (PACC) for direct digital frequency synthesisers (DDFSs). To minimise the number of pre-skewing flip-flops, the proposed scheme sequentially loads Frequency Control Word (FCW) input data directly to the corresponding unit accumulators without through series of flip-flops, thus reducing the power consumption as well as the chip area co... View full abstract»

• ### V-band low phase noise QVCO in 90nm CMOS technology using a gate-connected tank

Publication Year: 2012, Page(s):1046 - 1048
Cited by:  Papers (3)
| | PDF (287 KB)

A quadrature voltage controlled oscillator (QVCO) with -111 dBc/Hz average phase noise at 1MHz offset across an output frequency range of 48.9-50.3-GHz is presented. The design employs a modification of the Armstrong technique of using a transformer in the LC tank to improve the phase noise by reducing the single-ended component of the tank capacitance in a differential cross-coupled design and by... View full abstract»

• ### Improved DGA method based on rules extracted from high-dimension input space

Publication Year: 2012, Page(s):1048 - 1049
Cited by:  Papers (1)
| | PDF (60 KB)

The diagnosis of incipient faults in power system elements such as transformers is usually based on the concentrations of dissolved gases existent in the insulation oil. There are consolidated DGA-based (dissolved gas analysis) methods in the literature, such as the Duval triangle. However, they present some limitations such as the existence of non-decision areas and erroneous results. Proposed is... View full abstract»

• ### Domain wall motion based magnetic adder

Publication Year: 2012, Page(s):1049 - 1051
Cited by:  Papers (4)
| | PDF (330 KB)

Presented is the first design of a multi-bit magnetic adder (MA) based on domain wall (DW) motion. All the input and output signals are stored in non-volatile DW shift registers instead of CMOS registers. One can turn off safely the logic circuits without data backup and power them on instantly. This new function promises to overcome completely the rising standby power issue. Moreover, the direct ... View full abstract»

• ### Four current-tunable chaotic oscillators in set of two diode-reversible pairs

Publication Year: 2012, Page(s):1051 - 1053
Cited by:  Papers (3)
| | PDF (457 KB)

Four current-tunable chaotic oscillators are presented in a set of two diode-reversible pairs. The first pair employs a floating-diode technique whereas the second pair employs a virtually-grounded-diode technique. Two chaotic attractors of a pair are 180°-rotated images of each other. Each oscillator consists of six basic electronic components which are minimal in a category of chaotic osc... View full abstract»

• ### WIPS: a write-in-place snapshot file system for storage-class memory

Publication Year: 2012, Page(s):1053 - 1054
Cited by:  Papers (1)  |  Patents (2)
| | PDF (350 KB)

A new snapshot file system for storage-class memory is presented. The file system reduces the overhead of snapshots, in terms of both space and the number of writes, by using in-place writes. Experimental results with real workloads show that the proposed file system uses 20-65% less space than the well-known copy-on-write snapshot technique, while providing the same reliability. View full abstract»

• ### Series resistance method to obtain equivalent circuit of piezoelectric resonator

Publication Year: 2012, Page(s):1054 - 1056
| | PDF (387 KB)

The series resistance method (SRM) is introduced to obtain an equivalent circuit of a piezoelectric micro resonator. This method uses two series resistances respectively connected to driving electrodes of the resonator, and then detects the voltage amplitudes at the terminals of the series resistances and phase difference between them. Compared with the results of the impedance analyser, the devia... View full abstract»

• ### Demonstration of electromagnetic cloaking of conducting object by dielectric material cover

Publication Year: 2012, Page(s):1056 - 1057
Cited by:  Papers (1)
| | PDF (304 KB)

The cloaking of electrically thin conducting cylinders is experimentally demonstrated. Instead of employing any complex materials (metamaterials) commonly affiliated with cloaking, the cloaking effect is here achieved with a homogeneous dielectric material covering the cloaked metal cylinder. Moreover, the relative dielectric constant of this material is positive and of moderate value, and therefo... View full abstract»

• ### Learning complex cell features with cooperating pooling operation for object recognition

Publication Year: 2012, Page(s):1058 - 1059
| | PDF (155 KB)

A simple biologically inspired feature extraction algorithm is proposed for object recognition. First, a set of statistical topographic filters modelling the properties of complex cells in a primary visual cortex (V1) are learned based on enhanced independent subspace analysis (EISA), and locally invariant feature maps are extracted by convolving the filters with each image. Then, the cooperating ... View full abstract»

• ### Simple entropy estimator for small datasets

Publication Year: 2012, Page(s):1059 - 1061
| | PDF (168 KB)

A pragmatic approach for entropy estimation is presented. It is based on coincidence detection and its application leads to a simple algorithm with two attractive features: the method can be used without any a priori knowledge concerning the source alphabet cardinality (K) and it can provide useful, though biased, estimates even when the number of samples is less than K. View full abstract»

• ### Artificial immune algorithm applied to short-term prediction for mobile object location

Publication Year: 2012, Page(s):1061 - 1062
| | PDF (228 KB)

Mobility prediction is one of the most essential issues that need to be explored for management in a location-based service. The purpose of this study is to present a novel approach for predicting the next location of a mobile object. Existing prediction methods are generally based on mass history information. However, they cannot work well on the prediction of an object which has the features of ... View full abstract»

• ### Frequency effect on electrical fatigue behaviour of lead zirconate titanate ceramics

Publication Year: 2012, Page(s):1062 - 1064
| | PDF (265 KB)

The frequency effect on the electrical fatigue behaviour of lead zirconate titanate (PZT) ceramics for a micro-actuator of hard disk drives has been investigated. The PZT sample was subjected to a bipolar electric field of ±1 kV/mm at various frequencies; 10, 50, 100 Hz. The fatigue behaviour could be attributed to the domain pinning effect and is well quantitatively analysed by using the f... View full abstract»

• ### +134 dBm IIP3, 0.4-1 GHz common-drain stage with its high frequency analysis

Publication Year: 2012, Page(s):1064 - 1065
Cited by:  Papers (1)
| | PDF (390 KB)

A highly linear common-drain (CD) configuration is designed and measured. The third-order nonlinearity of the transconductance which is a major contributor to the third-order nonlinearity in the CD configuration, is linearised by applying the multiple gated transistor technique. In addition, the harmonic feedback effect in the configuration, which limits linearity improvement, is solved by employi... View full abstract»

• ### Discretely tuned RF-MEMS bandstop filter with wide tuning range and uniform high rejection

Publication Year: 2012, Page(s):1065 - 1067
| | PDF (255 KB)

A new bandstop filter is presented providing a two-state discrete wide tuning range from 20 to 30 GHz with the same high rejection level of 36 dB. In the design, metal-insulator-metal capacitors are placed on one end of the resonators and on the other end capacitive micro-electromechanical systems (MEMS) switches are used to discretely tune the centre reject band of the filter. View full abstract»

• ### Design method for bandpass filter with enhanced stopband rejection using spiral SIRs

Publication Year: 2012, Page(s):1067 - 1068
Cited by:  Papers (3)
| | PDF (223 KB)

A new design method for a compact narrowband bandpass filter with high out-of-band rejection level is presented. A cross-coupled spiral stepped-impedance resonator (SIR) filter is proposed which consists of four spiral SIRs to realise the sharpest skirt characteristic. The fundamental mode is strengthened while spurious modes are suppressed, so the proposed filter rejects 4.79 dB more on average t... 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