Results 331 to 340 of about 2,845,707 (370)

A compact butler matrix for WLAN application

Microwave and Optical Technology Letters, 2010
AbstractIn this article, a compact butler matrix for wireless communications is designed and implemented at 2.4 GHz using defected ground structures (DGS).The butler matrix consists of a 3‐dB coupler, crossover (0‐dB coupler), and phase shifter. The 3‐dB coupler and crossover are compacted using T‐model of transmission line and DGS.
Mohsen Maddah‐Ali, Keyvan Forooraghi
openaire   +1 more source

Design of Wideband 8×8 Butler Matrix using Composite Right/Left-handed Transmission Line for Multi-mode OAM Generation

Applied Computational Electromagnetics Society Journal (ACES)
In this paper, a wideband Butler matrix for the uniform circular array antenna (UCA) generating multi-mode orbital angular momentum (OAM) vortex wave is designed. Firstly, the novel network topology of a Butler matrix is proposed.
Yan Zhang, H. Ye, Jia-lin Zhang, Xurui Zhang, Shanwei Lü   +4 more
semanticscholar   +1 more source

Design and realization of a compact substrate integrated coaxial line butler matrix for beamforming applications

International journal of microwave and wireless technologies
This article presents the modeling and realization of a compact substrate integrated coaxial line (SICL) based butler matrix operating at 5 GHz for beam-forming applications.
Satya Krishna Idury, N. Delmonte, L. Silvestri, Maurizio Bozzi, S. Mukherjee   +4 more
semanticscholar   +1 more source

A Novel Design of Miniaturized Butler Matrix

2018 IEEE 18th International Conference on Communication Technology (ICCT), 2018
In this paper, we design a stepped miniaturized 4 × 4 Butler matrix using the principle of impedance transformation. Compared with the traditional Butler matrix, the miniaturized Butler matrix has a reduced area of 78.6%, and the output amplitude is stable, the output phase gradient meets the design requirements.
Ruobing Liang, Yan Zhang, Wenjie Yan, Jinhao Wang, Yan Tong, Chuan Lin, Qin Chang   +6 more
openaire   +1 more source

Beamforming Networks for 5G. A Literature Review of Butler Matrix

2024 International Conference on Electronics, Computing, Communication and Control Technology (ICECCC)
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 increases in number of users and others, we are in need to improve our hardware ...
K. Naidu, S. Rosaline
semanticscholar   +1 more source

Microstrip Butler matrix design and realization for 7 T MRI

Magnetic Resonance in Medicine, 2011
AbstractThis article presents the design and realization of 8 × 8 and 16 × 16 Butler matrices for 7 T MRI systems. With the focus on low insertion loss and high amplitude/phase accuracy, the microstrip line integration technology (microwave‐integrated circuit) was chosen for the realization.
Yazdanbakhsh, Pedram, Solbach, Klaus
openaire   +2 more sources

Reconfigurable Phase-Difference Characteristics of Compact 4×4 Butler Matrix Structures

2024 International Microwave and Antenna Symposium (IMAS)
This paper presents the reconfigurable phase-difference characteristics of compact Butler matrix (BM) structures. The reconfigurable phase-difference characteristics are achieved by altering the phase-differences of couplers contained in the BM structure.
Zulfi, I. Santoso, Achmad Munir
semanticscholar   +1 more source

Two-Dimensional Butler Matrix Concept for Planar Array

2018 IEEE/MTT-S International Microwave Symposium - IMS, 2018
A new concept of the two-dimensional (2-D) Butler Matrix (BM) is proposed for 2-D beam steering of a 2-D planar array. An example of a $\pmb{16\times 16}$ BM for a $\pmb{4\times 4}$ planar array is presented. All phase-delay values of the phase shifters in the proposed BM can be calculated merely from traditional $\pmb{4\times 4}$ BM by summation
Kejia Ding, Ahmed Kishk
openaire   +1 more source

Ultra wideband coupler design for Butler Matrix application

The 17th Asia Pacific Conference on Communications, 2011
This paper presents a design of a 3-dB compact ultra wideband (UWB) coupler for a 4×4 Butler Matrix which is operating between 3 and 11 GHz frequency range. The design is using microstrip-slot multilayer technology that allows having a compact and very broad bandwidth coupler.
Nor Salehah binti Muklas, S. K. A. Rahim, Norhudah Seman   +2 more
openaire   +1 more source

Planar Butler Matrix Based on Compact Taps

2019 IEEE East-West Design & Test Symposium (EWDTS), 2019
The paper presents a planar Butler matrix operating in the range of 0.9-1.05 GHz, implemented on compact directional couplers. The intersecting lines in the matrix are implemented based on the crossover. Modeling and electrodynamic analysis of the circuits was performed in the NI-AWR Design Environment program.
openaire   +1 more source