Sefrea - Software e Sistemas

Management System for Condominium Services (http://www.sefrea.com/en/portfolio/management-system-for-condominium-services/)

Portfolio - Management System Condominium Services - SEFREA - Portugal Proof-of-concept management system for condominium services. Technical implementation details: Oracle DBMS accessed by PL/SQL; Web interface based on HTML, XML, XSL; 3NF and BCNF normalization; TRIGGERS;

Free-space optics (FSO) Transmission System (http://www.sefrea.com/en/portfolio/free-space-optics-fso-transmission-system/)

Portfolio - Free-space optics FSO System - SEFREA - Porto Portugal Technical and economical feasibility study for the design of a low-cost, short-haul, FSO communication system; expected transmission rates around 1.25 Gbps (1000BASE-SX Gigabit Ethernet interface)

The project goal was to design, implement and test a 1.7 GHz low-noise amplifier (LNA) intended to be the first stage of a Meteosat System downconverter; The LNA, together with the following stages (such as the baseband filter, the mixer and the local oscillator), would allow the reception of meteorological images from the Meteosat System; Once implemented on a PCB using microstrip technology, the individual components and the overall LNA system were tested using microwave measurement techniques; more specifically, S-parameter measurements were made using a vector network analyser; The design process was assisted by the use of EM simulation software, such as Ansoft Serenade.

http://www.sefrea.com/en/portfolio/meteorological-satellite-earth-station/

client: Daphne Pty. Ltd., Australia (link: http://www.sefrea.com/en/portfolio/customer-relationship-management-crm-system/)

Design, implementation and testing of a Web-based Customer Relationship Management (CRM) System; works: Database Design; Microsoft SQL Server setup; 3-tier Management System Development; Web Design/Integration; MYOB Import/Export synchronization; Business Intelligence Reporting; Deployment to SBS 2003/2011 (IIS6/7);