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About

Henrique M. Salgado graduated in Applied Physics (Optics and Electronics) from the University of Porto in 1985 and received the PhD degree in Electronic Engineering and Computer Systems from University of Wales in 1993. He joined the Department of Electrical Engineering and Computers of the University of Porto in 1999 as an Invited Assistant Professor and in 2003 he became Associate Professor. Since 1995 that he heads the Optical and Electronics Area of INESC TEC, begin responsible for several national and internationally funded (EU) research projects. From 1997-1999 he was Research Fellow at the Department of Electrical and Electronic Engineering of the University College London, UK and previously Research Assistant at the School of Electronic Engineering and Computer Systems, Bangor, UK. He is the author and co-author of numerous international publications in the field of optical fibre communications and microwaves. His current research interests include: radio-over-fiber technology and microwave photonics, digital equalization in coherent optical systems, all-optical networks, modeling of nonlinearities and design of compact multiband antennas. He is a member of the Photonics and Communications societies of the IEEE.

Interest
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Details

Details

023
Publications

2022

Substrate Integrated Waveguide Cavity Backed Slot Antennas for Millimeter-Wave Applications

Authors
Finich S.; Salgado H.M.; Pinho P.;

Publication
2022 16th European Conference on Antennas and Propagation, EuCAP 2022

Abstract
A low-cost single-layer substrate-integrated waveg-uide (SIW) cavity-backed slot antenna is proposed for millimeter-wave applications. The structure is designed to operate at the W-band. The T-shaped slot antenna is placed on the back-side of the SIW and fed by a grounded coplanar waveguide (GCPW) transmission line. A transition between the (GCPW) and the SIW is also designed. The simulated results provide that the antenna has a stable gain over the frequency range (98.79-100.56) GHz with a maximum value of around 6 dBi also high radiation efficiency.

2021

Wide Scanning Angle Millimetre Wave 1 x 4 Planar Antenna Array on InP at 300 GHz

Authors
Hussain, B; Salgado, HM; Pessoa, LM;

Publication
APPLIED SCIENCES-BASEL

Abstract
Featured Application Short-range millimetre wave communications. The design of a uniformly spaced 1 x 4 linear antenna array using epitaxial layers of benzocyclobutene over an InP substrate is demonstrated. The array elements are conjugately matched with a uni-travelling carrier photodiode at the input. The phased array is optimised to counteract mutual coupling effects by introducing metal strips with isolated ground planes for each radiating element. The proposed antenna array can provide a gain of 10 dBi with a gain variation of +/- 3 dB. The array operates over a bandwidth of 10 GHz (295-305 GHz) with a wide scanning angle of 100 degrees in the broadside.

2021

Design and Fabrication of sub-THz Steerable Photonic Transmitter 1x4 Array for Short-Distance Wireless Links

Authors
Guerrero, LG; Graham, C; George, J; Renaud, C; George, G; Hussain, B; Salgado, HM; Pessoa, LM; Hinojosa, A; Fernandez, J; Porcel, MAG;

Publication
2021 JOINT EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS & 6G SUMMIT (EUCNC/6G SUMMIT)

Abstract
In this paper we present the latest results on the design, fabrication and test of stand-alone photonic devices devoted to ultra-high bandwidth wireless access networks operating near the Terahertz (THz) band. We review the sub-THz photonics-based technology devices developed as part of the TERAPOD project, comprising the monolithically integrated Silicon Nitride photonic integrated circuit for phase distribution, the 1x4 array of integrated Uni-Travelling Carrier Photo-Diodes (UTC-PDs) and the radiative design of the high-frequency four element linear patch antenna array based on Benzocyclobutene (BCB) layers. We also report the suitability to assemble all those components in a robust small-form factor hybrid package.

2021

Modelling of an Underwater Optical Wireless Communication System with Misalignment Tolerance

Authors
Marques, V; Salgado, HM; Pessoa, LM;

Publication
2021 IEEE 32ND ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)

Abstract
This papers proposes a multiple sensor-lens pair scheme to increase the misalignment tolerance and presents an accurate model of photon propagation based on the Monte Carlo simulation, that includes the photon refraction at the lenses interface and angular misalignment between emitter and receiver. The results show that the ideal divergence of the emitter's beam is around 15 for a 1 metre Tx-Rx distance, increasing to 22 for a shorter distance of 0.5 metres, but being independent of the water turbidity, showing that the geometry of the link is the dominant factor in such short-range links. Additionally, it was concluded that a 7 lenses scheme is approximately 3 times more offset tolerable than a single lens. Rotating the emitter increases the optimal divergence while rotating the plane of sensors decreases it. © 2021 IEEE.

2021

iBROW

Authors
Tavares, JS; Watson, S; Zhang, W; Figueiredo, JML; Cantu, HI; Wang, J; Al-Khalidi, A; Kelly, AE; Wasige, E; Salgado, HM; Pessoa, LM;

Publication
Springer Series in Optical Sciences - THz Communications

Abstract

Supervised
thesis

2021

Antenna array design for future generation of mobile communications

Author
José Miguel Sousa Neves

Institution
UP-FEUP

2021

Top-Up Forecasting of Pre-Paid Mobile Subscribers

Author
PEDRO MIGUEL FERREIRA ALVES

Institution
IPP-ISEP

2021

Plataforma digital para a prevenção, monitorização e gestão inteligente da "praga mosca da azeitona"

Author
Adília Isabel Domingues da Cruz Alves

Institution

2021

Next Generation Long-Haul Optical Fibre Communications and Optical-Wireless Interfaces

Author
Joana dos Santos Tavares

Institution
UP-FEUP

2021

Constellation shaping in high-speed resilient optical wireless communications

Author
João Henrique Melro Araújo

Institution
IPP-ISEP