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About

About

PhD by the Faculty of Engineering of the University of Porto in February 2004, after presentation and discussion of the thesis "Dynamic Test of Analog / Digital Converters - New Methods of Calculation of Functional Characterization Parameters".

Assistant Professor of the Department of Electrotechnical and Computer Engineering of the Faculty of Engineering of the University of Porto (DEEC-FEUP) where he teaches curricular units in the areas of Electronics and Microprocessors.

He is an INESC TEC researcher and coordinator at CRIIS (Center of Industrial Robotics and Intelligent Systems) where he participates in several scientific projects.

His skills and interests include Industrial Robotics, Automation and Control Systems, Industrial Networks, Embedded Systems, Industry 4.0 and Internet of Things.

Interest
Topics
Details

Details

001
Publications

2015

A Low-Power Multi-Tanh OTA with Very Low Harmonic Distortion

Authors
Kianpour, I; Hussain, B; Tavares, VG; Mendonca, HS;

Publication
2015 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)

Abstract
This paper presents a wide input range, low-power operational transconductance amplifier (OTA) in weak inversion. The OTA is implemented with tanh-triplets differential pairs, degenerated by a composite configuration to augment the input linear range, thus reducing further the harmonic distortion. Using MATLAB, the mismatch factor (A) of a typical multi-tanh triplet has been optimised for minimum harmonic distortion. The OTA is designed in UMC 0.13um CMOS technology with 1.2V supply. Simulations show that the input range can be extended to 300 mV, while keeping the HD3 below -80 dB. The average power consumption is 13nW, with an open loop-gain of 76 dB and a unity gain frequency of 250 Hz. The low harmonic distortion OTA can find potential applications in low-power and long time constant filters.

2014

Design Considerations for LTCC based UWB Antennas for Space Applications

Authors
Hussain, B; Kianpour, I; Tavares, VG; Mendonca, HS; Miskovic, G; Radosavljevic, G; Petrovic, VV;

Publication
2014 IEEE INTERNATIONAL CONFERENCE ON WIRELESS FOR SPACE AND EXTREME ENVIRONMENTS (WISEE)

Abstract
This paper presents a planar antenna using low temperature co-fired ceramics (LTCC) substrate for extreme environment applications. An ultra wideband (UWB) elliptical patch antenna was designed and fabricated using an LTCC Ceramtec GC substrate to demonstrate the capabilities of the technology for wideband applications. The simulated results were further validated experimentally. The fabricated antenna provides a peak gain of 5dB over a bandwidth of 4 GHz (3 GHz 7 GHz) with return loss better than -10dB. The radiation pattern is omni-directional in the horizontal plane (theta=90 degrees) over the whole frequency range.

2013

Self-localisation of indoor mobile robots using multi-hypotheses and a matching algorithm

Authors
Pinto, M; Sobreira, H; Paulo Moreira, AP; Mendonca, H; Matos, A;

Publication
MECHATRONICS

Abstract
This paper proposes a new, fast and computationally light weight methodology to pinpoint a robot in a structured scenario. The localisation algorithm performs a tracking routine to pinpoint the robot's pose as it moves in a known map, without the need for preparing the environment, with artificial landmarks or beacons. To perform such tracking routine, it is necessary to know the initial position of the vehicle. This paper describes the tracking routine and presents a solution to pinpoint that initial position in an autonomous way, using a multi-hypotheses strategy. This paper presents experimental results on the performance of the proposed method applied in two different scenarios: (1) in the Middle Size Soccer Robotic League (MSL), using artificial vision data from an omnidirectional robot and (2) in indoor environments using 3D data from a tilting Laser Range Finder of a differential drive robot (called RobVigil). This paper presents results comparing the proposed methodology and an Industrial Positioning System (the Sick NAV350), commonly used to locate Autonomous Guided Vehicles (AGVs) with a high degree of accuracy in industrial environments.

2012

Global Localisation Algorithm from a Multiple Hypotheses Set

Authors
Miguel Armando Pinto; Héber Miguel Sobreira; António Paulo Moreira; Hélio Mendonça

Publication
LARS'2012 - Latin American Robotics Symposium, pp.137-142, Fortaleza , Brasil

Abstract
In this paper, a new fast and computationally light weight methodology is proposed to pinpoint a robot in a structured scenario. The localisation algorithm performs a tracking routine to pinpoint the robot's position as it moves in a known map. To perform such tracking routine, it is necessary to know the initial position of the vehicle. This paper briefly describes the tracking routine and presents a solution to pinpoint that initial position in an autonomous way. Experimental results on the performance of the proposed methodology are presented in this paper in two different scenarios: 1) in the Middle Size Soccer Robotic League (MSL), with artificial vision data from an omnidirectional robot; and 2) in an indoor environment with a Laser Range Finder data from a differential traction robot (called RobotVigil).

2011

A Comparison of Look-up Table Based Sine Wave Generation Implementations

Authors
António José Salazar; Ganga Bahubalindruno; G.R. Lacharla; Hélio Mendonça; José Carlos Alves; J.M. da Silva

Publication
REC'2011 - 7th Portuguese Meeting on Reconfigurable Systems , Porto, Portugal

Abstract
Sine wave generators are widely used in different applications such as communications, instrumenta-tions, biomedical electronics, and music synthesis. Look-up table (LUT) based sine wave generators are a commonplace implementation due to their concep-tual simplicity. Also, LUT serve as a universal func-tional logic component, which adapts well within programmable logic scenarios, reason for which they are intertwined with several aspects of FPGAs. This article seeks to compare diverse LUT sine wave implementations such as variations with linear and cubic interpolations, against alternatives: digital resonators and, CORDIC techniques. The compari-son terms consider hardware implementation and signal quality aspects, in particular factors such as varying ROM size and power consumption and THD, SNR, ENOB. The sources were written in Verilog and implemented for a FPGA Spartan-3E development board and as application specific ICs, without consideration for analog reconstruction.

Supervised
thesis

2017

Sensorização 3D e Controlo de Manipuladores Industriais através de uma plataforma de baixo custo

Author
Ana Catarina Bastos Simões

Institution
UP-FEUP

2017

Implementação em Chão de Fábrica do Sistema de Corte de Rolos Calandrados

Author
Paulo Miranda Rebelo

Institution
UP-FEUP

2016

Sistema Integrado de Monitorização da Produção em Ambiente Fabril

Author
Diogo Santos Lopes Simão de Magalhães

Institution
UP-FEUP

2016

Sistema de Monitorização Remota e Interface de Operações para um Robô de Minas e Armadilhas

Author
João Álvaro Silva Costa e Sá

Institution
UP-FEUP

2015

Design of a low-power transmitter for UWB applications

Author
Iman Kianpour

Institution
UP-FEUP