101 citations · 108 across the 7 of their papers we have counts for
7 papers
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…
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…
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…
Mie Scattering with 3D Angular Spectrum Method
Joel Lamberg, Faezeh Zarrinkhat, Aleksi Tamminen +6
Mie theory is a powerful method to model electromagnetic scattering from a multilayered sphere. Usually, the incident beam is expanded to its vector spherical harmonic representati…
Submillimeter-wave cornea phantom sensing over an extended depth of field with an axicon-generated Bessel beam
Mariangela Baggio, Aleksi Tamminen, Joel Lamberg +9
The feasibility of a 220 - 330 GHz zero order axicon generated Bessel beam for corneal water content was explored. Simulation and experimental data from the 25-degree cone angle hy…
Coupling to longitudinal modes in spherical thin shells illuminated by submillimeter wave Gaussian beam: applications to corneal sensing
Faezeh Zarrinkhat, Joel Lamberg, Aleksi Tamminen +6
Coupling to longitudinal modes of thin spherical shells, under Gaussian-beam illumination, was explored with a theoretical method based on Fourier-optics analysis and vector spheri…
Extreme Asymmetry in Metasurfaces via Evanescent Fields Engineering: Angular-Asymmetric Absorption
Xuchen Wang, Ana Diaz-Rubio, Viktar S. Asadchy +4
On the quest towards full control over wave propagation, the development of compact devices that allow asymmetric response is a challenge. In this Letter, we introduce a new paradi…