This paper presents dual-band equal/unequal Wilkinson power dividers based on a coupled-line section with short-circuited stub (called as the “coupled-line section” for short), which consists of a pair of parallel coupled lines and a short-circuited stub. With the analyses of the phase shift and equivalent characteristic impedance, the coupled-line section is used to replace the quarter-wavelen...

A fully-integrated Multi-Band PA using 0.25 μm SiGe:C process with an output power of above 25 dBm is presented. The behaviour of the amplifier has been optimized for multi-band operation covering, 2.4 GHz, 3.6 GHz and 5.4 GHz (UWB-WiMAX) frequency bands for higher 1-dB compression point and efficiency. Multi-band operation is achieved using multi-stage topology. Parasitic components of active ...

This paper is concerned with the capacities of spectrally overlaid narrow-band and wide-band systems using two code-division multiple-access (CDMA) techniques: a single-code and a multicode. The capacity is defined here as the maximally achievable total throughput in the narrow-band and wide-band subsystems. User signal power in the overlay systems affects the performance of the systems. The si...

Objective: Previous research with healthy subjects suggests that the lower alpha band re ̄ects attentional whereas the upper alpha band semantic processes. The aim of the present study was to investigate whether dyslexics show de®cits in attentional control and/or semantic encoding. Method: The EEG was recorded while subjects were reading numbers, words and pseudowords and analyzed in a lower an...

OFDM systems suffer from a high dynamic of the transmit signal, which leads to out-of-band radiation due to nonlinearities in the transmitter front-end. In order to overcome this issue there exist a variety of schemes reducing the out-of-band power. Most of these schemes consider the peak-to-average power ratio (PAR) as optimization criterion. In this paper, the PAR reduction scheme selected ma...

This paper presents an 8-18GHz wideband receiver with superheterodyne topology. In order to save power, both RF and IF signals share the tunable transconductance stage. The IF output of the first mixer is fed to its tunable input stage for IF amplification in a recursive manner, which significantly enhances the gain tuning without increasing the power. The wideband receiver MMIC is implemented ...

UNLABELLED Everyday locomotion and obstacle avoidance requires effective gait adaptation in response to sensory cues. Many studies have shown that efficient motor actions are associated with μ rhythm (8-13 Hz) and β band (13-35 Hz) local field desynchronizations in sensorimotor and parietal cortex, whereas a number of cognitive task studies have reported higher behavioral accuracy to be associa...

Introduction: Motion trajectory prediction (MTP) employs a time-series of band-pass filtered EEG potentials for reconstructing the three dimensional (3D) trajectory of limb movements with a multiple linear regression (mLR) block. While traditional multiclass classification methods use power values of mu (8-12Hz) and beta (12-30Hz) bands for limb movement based classification, recent MTP brain-c...

Abstract—In this paper, a novel dual-band RF-harvesting RF-DC converter with a frequency limited impedance matching network (M/N) is proposed. The proposed RF-DC converter consists of a dual-band impedance matching network, a rectifier circuit with villard structure, a wideband harmonic suppression low-pass filter (LPF), and a termination load. The proposed dual-band M/N can match two receiving...