This paper presents the performance analysis and experimental demonstrations of our
orbital angular momentum-multiple-input multiple-output (OAM-MIMO) multiplexing system …

Mobile traffic growth requires the advancement of not only the wireless access networks but
also their backhaul and fronthaul. Terabit-class wireless backhaul and fronthaul can be an …

In satellite remote sensing (SRS), there is a demand for large-power microwave
components. A Butler matrix is essential to a transmitting antenna array in SRS. This article …

As we are evolving into higher generations of mobile communications for improving our
quality of services like low latency, achieving higher data rates, managing exponential …

This paper introduces an innovative dual-band Butler matrix (BM) characterized by
compactness and an enhanced frequency ratio (K). The design employs meandered lines …

This research focuses on developing a uniquely miniaturized 4× 4 Butler Matrix Network
integrated with a 1× 4 linear array antenna, generating four beams with exceptional isolation …

In this communication, a 3-D-printed filtering Butler matrix-based multibeam antenna array is
investigated in the Ka-band. The Butler matrix consists of all-resonator 180° filtering hybrids …

This paper presents a novel optimization-based procedure for designing a multi-band
branch-line coupler with arbitrary output power division ratios and phase differences that are …

A waveguide branch-line crossover with broad bandwidth is designed for beam-forming
networks in millimeter wavebands. To realize the power coupling between two parallel …

Broadband high-altitude platform station (HAPS) concepts have garnered notable attention
from 6 G researchers due to their superior line-of-sight (LoS) probabilities, making them …