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Sociedade Brasileira de Telecomunicações


Square-spiral antenna with unbalanced-excitation

A new spiral square architecture antenna with unbalanced excitation was designed. Spiral antenna is formed by two arms, a ragged arousal in which one of th...

SBrT 2013


Sinc Exponential ISI-Free Pulse with Better Performance

In this manuscript, the sinc exponential pulse (SEP) is evaluated at the transmitter and receiver side by using different metrics. The impulse response of ...

SBrT 2017


Dynamic Power Saving in Energy Efficient PONs

This paper presents the potentials and challenges of a dynamic power saving technique in optical network units (ONUs) to achieve energy efficiency in passive...

SBrT 2011


Low cost drip count device for IV gravity sets

The use of IV gravity sets for infusion is outspread around the world. This paper presents a method of drip count measurement based on an infrared LED an...

SBrT 2016


Arduino Based Car Sentinel Device

With the increase on the number of vehicles on the streets comes the need for more parking spaces. Many car owners decide its best to leave their car unatt...

SBrT 2016