3 papers
physics.app-ph2026
Fully Scalable Polarization-Reconfigurable S/X-Band Shared-Aperture Phased Array for Ultra-Low Axial-Ratio Scanning
Mohamed Räsänen, Juha Ala-Laurinaho, Samuel de Jésus Ndimubandi +8
This paper presents a modular S-/X-band shared-aperture phased-array antenna (SAPAA) for satellite-communication ground-station reception. The proposed architecture uses a repeatab…
physics.ins-det2025
Quasioptic, Calibrated, Full 2-port Measurements of Cryogenic Devices under Vacuum in the 220-330 GHz Band
Maxim Masyukov, Aleksi Tamminen, Irina Nefedova +8
A quasi-optical (QO) test bench was designed, simulated, and calibrated for characterizing S-parameters of devices in the 220-330 GHz (WR-3.4) frequency range, from room temperatur…
physics.optics2025
A Telecentric Offset Reflective Imaging System (TORIS) for Terahertz Imaging and Spectroscopy
Pouyan Rezapoor, Aleksi Tamminen, Juha Ala-Laurinaho +2
Terahertz (THz) imaging has emerged as a promising technology in medical diagnostics due to its non-ionizing radiation and high sensitivity to water content. However, conventional…