Tobias Tired graduated and achieved his doctoral title Nov 9, 2016 after defending his thesis named "Integrated Transceivers for Millimeter Wave and Cellular Communication".
What’s your research about Tobias?
-I have designed integrated circuits for wireless communication. Receivers for mobile phones have to date used frequencies up to 2,7 GHz and homodyne technology has fully replaced the older superheterodyne technology which means filterless and cheaper solutions.
-Much higher frequencies (mm-wave, 71-95 GHz) can be used for wireless communication between basestations as a fiber replacer in future systems where we will see much smaller cells and much higher number of basestations. These high bands secure bitrates of several Gbps.
-Higher attenuation requires more directional antennas and my work presents designed circuits to control this electronically. I have also investigated new architectures for power amplifiers which often dominates the power consumption of an entire transmitter solution.
-In total, I have designed 5 circuits containing oscillators, PAs and PLLs. 4 of them have been tested and verified through experiments. My research has been financed through the VINNOVA-center System Design on Silicon (SoS).
Who are you?
-I grew up in Lund and have lived here all my life except for a three year stay in Stockholm when I was working at Ericsson Components. I worked almost 20 years with Ericsson before I started as a PhD-student at EIT. Between 2011 and 2012 I was an industrial PhD supervised by Pietro Andreani. Read more...
Text and Photo: Anders Borgström