A <span>good antenna design has played an essential role in the of wireless communication systems, international companies are looking for best that suits their products terms size, bandwidth, gain, cost, and performance. In this paper, three models designed fifth-generation (5G) communications, first model is a single antenna, second two-ports multi-input multi-output (MIMO) third four-p...

In the future, 6G wireless communications will be integrated into various applications. It is expected that it handle all Internet of Things services as well satellite communications. Additionally, predicted to support machine learning (ML) and artificial intelligence (AI). So this work investigated four orthogonal ports graphene-based multiple-input multiple-output (MIMO) antenna in terahertz ...

In this work, a vertical N-I-P germanium (Ge) photodetector (PD) with multi-mode waveguide input is presented. The fabricated devices exhibit low dark current of 10 nA at bias −1 V, and high responsivity exceeding 0.75 A/W over the wavelength range from 1270 to 1350 nm. High-frequency characteristics measurements show that has 3 dB opto-electrical (OE) bandwidth 23 GHz under −3 V bias, which ca...

In autonomous driving vehicles, the emergency braking system uses lidar or radar sensors to recognize surrounding environment and prevent accidents. The conventional classifiers based on data using deep learning are single input structures range–Doppler maps micro-Doppler. Deep with a structure has limitations in improving classification performance. this paper, we propose multi-input classifie...