A mmWave wideband slot array antenna based on ridge gap waveguide with 30% bandwidth

A Farahbakhsh, D Zarifi… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
A wideband 8× 8 element slot antenna array based on ridge gap waveguide feeding
network has been proposed for mmWave applications. The antenna subarray consists of …

A wideband and high-gain all-metallic perpendicular-corporate-fed multi-layered parallel-plate slot array antenna

S Ji, J Hirokawa, T Tomura - IEEE Access, 2022 - ieeexplore.ieee.org
An all-metallic multi-layered parallel-plate slot array antenna operated in the 60-GHz band
with wide impedance bandwidth and high-gain characteristics is proposed. The-slot antenna …

A wideband full-corporate-feed waveguide slot planar array

Z Shi-Gang, H Guan-Long… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
A wideband full-metal planar antenna array with full-corporate feed-network is proposed.
Cavity and slot are used as the basic radiation element and T-shaped walls are employed in …

All-dielectric Fabry–Pérot-based compound Huygens' structure for millimeter-wave beamforming

MK Emara, T Tomura, J Hirokawa… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Novel Fabry-Pérot resonator-based compound Huygens' structure with two all-dielectric
metasurface layers is proposed and experimentally demonstrated. This design consists of …

Fast analysis and bandwidth enhancement of the radiating subarray by method of moments for a parallel-plate slot array antenna with perpendicular-corporate feed

S Ji, T Tomura, J Hirokawa - IEEE Transactions on Antennas …, 2021 - ieeexplore.ieee.org
Fast analysis and wideband design using method of moments (MoM) are proposed for a
radiating subarray in a parallel-plate slot array antenna with perpendicular-corporate feed in …

Metallo-dielectric millimeter-wave Huygens' quarter-wave and half-wave plates

MK Emara, T Tomura, J Hirokawa… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
A novel metallo-dielectric Huygens' unit cell is proposed that can be designed to operate
either as a quarter-wave plate (QWP) or as a half-wave plate (HWP). The unit cell is based …

A wideband circularly polarized corporate-fed waveguide aperture array in the 60 GHz band

M Zhang, T Yamamoto, J Hirokawa… - IEEE Antennas and …, 2021 - ieeexplore.ieee.org
A wideband circularly polarized planar antenna with hexagonal apertures arrayed over a
plate-laminated waveguide slot array is developed in the 60 GHz band. The 2× 2-element …

Plate-laminated waveguide monopulse slot array antenna with full-corporate-feed in the E-band

X Xu, J Hirokawa, M Ando - IEICE Transactions on …, 2017 - search.ieice.org
This paper presents the design and characterization of an E-band 16× 16-slot monopulse
array antenna with full-corporate-feed fabricated by the commercially available batch …

High‐gain tapered monopulse antenna based on octuple excitation method in diffusion bonding technology at W‐band

A Mahmoud, T Tomura, M Ettorre… - IET Microwaves …, 2024 - Wiley Online Library
The authors present the design, fabrication and testing of a W‐band monopulse antenna.
This antenna consists of three main building blocks: an array with 48× 48 slots, a tapered …

Realization of a beam-tilted circularly polarized corporate-fed waveguide slot array in the 60 GHz band

M Zhang, S Matsueda, J Hirokawa… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
A beam-tilted circularly polarized (CP) corporate-fed waveguide slot array is accomplished
in the 60 GHz band. The main beam tilting in the 45° cut-plane is achieved by introducing a …