A 28-GHz Switched-Beam Antenna with Integrated Butler Matrix and Switch for 5G Applications [PDF]
Sensors, 2021 This work presents a 28-GHz Butler matrix based switched-beam antenna for fifth-generation (5G) wireless applications. It integrates a 1 × 4 microstrip antenna, a 4 × 4 Butler matrix, and a single-pole four-throw (SP4T) absorptive switch in a single ...
Sujae Lee, Yongho Lee, Hyunchol Shin
doaj +4 more sources
Design and Implementation of C-Band Large-Power Planar Butler Matrix in SRS [PDF]
SensorsIn 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 illustrates the electrical and mechanical design, simulation, and test results of
Jinfeng Li +4 more
doaj +4 more sources
A Low-Loss, 77 GHz, 8 × 8 Microstrip Butler Matrix on a High-Purity Fused-Silica (HPFS) Glass Substrate [PDF]
Sensors, 2023 A low-loss, compact, ultra-thin, passive, 77 GHz, 8 × 8 microstrip Butler matrix on a 200 μm thick high-purity fused-silica (HPFS) glass substrate embedded in 0.8 μm thick patterned gold conducting layers was developed for low power automotive radars ...
Ronak Sakhiya, Sazzadur Chowdhury
doaj +2 more sources
A low-loss and compact single-layer butler matrix for a 5G base station antenna. [PDF]
PLoS ONE, 2019 Researchers are increasingly showing interest in the application of a Butler matrix for fifth-generation (5G) base station antennas. However, the design of the Butler matrix is challenging at millimeter wave because of the very small wavelength.
Intan Izafina Idrus +7 more
doaj +2 more sources
mmWave Zero Order Resonant Antenna with Patch-Like Radiation Fed by a Butler Matrix for Passive Beamforming [PDF]
Sensors, 2023 A small zero-order resonant antenna based on the composite right-left-handed (CRLH) principle is designed and fabricated without metallic vias at 30 GHz to have patch-like radiation.
Manoj Prabhakar Mohan +3 more
doaj +2 more sources
Butler Matrix Based on Substrate Integrated Waveguide Without Crossover and Phase Shifter for Millimeter Waves Applications [version 2; peer review: 1 approved, 2 approved with reservations] [PDF]
F1000ResearchBackground A novel low-loss 4 × 4 Butler Matrix structure for 26 GHz operation is designed in this study. The proposed 4 × 4 antenna Butler matrix comprises an inscribed structure, which makes it fundamentally different from traditional beam-forming ...
Zahriladha Zakaria +5 more
doaj +2 more sources
Butler-Matrix Beamspace Front-Ends for Massive MIMO: Architecture, Loss Budget, and Capacity Impact [PDF]
SensorsMassive Multiple-Input Multiple-Output (MIMO) systems with hundreds or thousands of antenna elements are fundamental to next-generation wireless networks, promising unprecedented spectral efficiency through spatial multiplexing and beamforming.
Felipe Vico, Jose F. Monserrat, Yiqun Ge
doaj +2 more sources
Investigation on Beam Alignment of a Microstrip-Line Butler Matrix and an SIW Butler Matrix for 5G Beamforming Antennas through RF-to-RF Wireless Sensing and 64-QAM Tests [PDF]
Sensors, 2021 Hyung Wook Kwon +2 more
exaly +2 more sources
Design and Implementation of Butler Matrix
The Journal of Korean Institute of Communications and Information Sciences, 2014 Beam forming techniques are used to increase the efficiency of using frequency. In this paper we design and implement Butler matrix to be used for ISM band. The implemented Butler matrix has the insertion loss of maximum 6.7dB and the maximum phase shift error of over 2.4~2.485GHz.
exaly +3 more sources
Microstrip EHF Butler Matrix Design and Realization [PDF]
ETRI Journal, 2005 This paper describes the design and realization of an extra high frequency band 8 × 8 microstrip Butler matrix. Operation at 36 GHz is achieved with a frequency bandwidth exceeding 400 MHz. The circuit is implemented on a bi-layer microstrip structure using conventional manufacturing processes.
Jean-Sébastien Néron +1 more
exaly +2 more sources