![Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile](https://www.researchgate.net/profile/Ioannis-Gravas/publication/355070717/figure/fig2/AS:1076742454284291@1633726814998/Incoming-signal-at-DOA-th-n-ph-n-received-by-an-antenna-array_Q320.jpg)
Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile
![Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile](https://i1.rgstatic.net/ii/profile.image/980226083418113-1610715518647_Q512/Ioannis-Gravas.jpg)
Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile
![Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile](https://www.researchgate.net/profile/Ioannis-Gravas/publication/355070717/figure/fig1/AS:1076742454284290@1633726814974/An-antenna-array-with-arbitrary-geometry_Q320.jpg)
Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile
![Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile Ioannis GRAVAS | Doctor of Philosophy | Aristotle University of Thessaloniki, Thessaloníki | AUTH | School of Electrical and Computer Engineering | Research profile](https://www.researchgate.net/profile/Ioannis-Gravas/publication/355070717/figure/fig4/AS:1076742458474497@1633726815030/Microstrip-line_Q320.jpg)