Hardware realization of neuromorphic computing with a 4–port photonic reservoir for modulation format identification
We make a deep dive into the fabrication and testing of a photonic reservoir with digital readout. The developed neural network was tested for the identification of modulation formats at 32 Gbaud transmission rates, where it achieved a near-100%...
15 GHz Independently Controllable Dual-Polarized 2-Bit Reconfigurable Intelligent Surface
Experience next-generation reconfigurable intelligent surfaces with a novel dual-polarized 2-bit RIS unit cell offering exceptional 55 dB cross-polarization isolation and 400 MHz bandwidth at 15 GHz. Featuring varactor-loaded bowtie elements and...
Dual-Beam Planar D-Band Antenna Array: Filtering Patch Antennas and Dielectric Lens
A hybrid analog beamforming at D-band is demonstrated by integration between an antenna array and a dielectric lens. The beam is collimated on one plane by the antenna array, and on the other by the elliptical lens profile. The antenna element is...
Evaluation of a WR6.5 Rotary Joint with two 3D-printed TE01 Mode Transducers
This paper explores a WR6.5 rotary joint based on two 3D-printed mode transducers. Tests from 140 to 170 GHz show about 2 dB of insertion loss across a 16 GHz usable band (145-161 GHz) and less than 15 degree of phase variation, validating 3D...
Waveform Design for Simultaneous MIMO Radar Sensing and Multi-User Communication
This work introduces a two-stage waveform design framework for multi-antenna integrated sensing and communication systems. By optimizing radar beampatterns and communication signals under practical constraints, the proposed method achieves...
Digital Post-Distortion Architectures for Nonlinear Power Amplifiers: Volterra and Kernel Methods
In modern 5G UEs, the PA consumes large amounts of power. However, there is a trade-off between power efficiency and nonlinear distortion. This study explores digital post-distortion to address PA nonlinearities at the base station. We take a...
RIPE: Reinforcement Learning on Unlabeled Image Pairs for Robust Keypoint Extraction
We introduce RIPE, an innovative reinforcement learning-based framework for weakly-supervised training of a keypoint extractor that excels in both detection and description tasks. In contrast to conventional training regimes that depend heavily...
Agile Sub-Terahertz to Terahertz Broadband Time-Domain Photonic Channel Sounder
This paper presents the design and implementation of an agile sub-terahertz (sub-THz) broadband time-domain photonic channel sounder, capable of characterizing wireless propagation channels within the 100 GHz to 500 GHz frequency range.
Real-time Fusion of Stereo Vision and Hyperspectral Imaging for Objective Decision Support during Surgery
We present a real-time stereo hyperspectral imaging system that combines 3D reconstruction with spectral tissue analysis, enabling live visualization of oxygenation and tissue composition during surgery.
Design and Validation of a Time Domain Correlation based Channel Sounder up to 500 GHz
In this paper, we introduce a novel time domain correlation based channel sounder that operates at 485 GHz.