Butler matrix based beamforming networks for phased array antenna systems: A comprehensive review and future directions for 5G applications
Due to the rapid development of wireless communication technologies, the number of
wireless users are radically increasing. Currently,~ 23 billion wireless devices are …
wireless users are radically increasing. Currently,~ 23 billion wireless devices are …
Novel Butler matrix using CPW multilayer technology
M Nedil, TA Denidni, L Talbi - IEEE Transactions on Microwave …, 2006 - ieeexplore.ieee.org
In this paper, a novel 4 times 4 two-layer Butler matrix based on a broad-band two-layer slot-
coupled directional coupler is presented and implemented at 5.8 GHz using coplanar …
coupled directional coupler is presented and implemented at 5.8 GHz using coplanar …
Dual-band planar quadrature hybrid with enhanced bandwidth response
C Collado, A Grau, F De Flaviis - IEEE transactions on …, 2006 - ieeexplore.ieee.org
This paper presents the theory, design procedure, and implementation of a dual-band
planar quadrature hybrid with enhanced bandwidth. The topology of the circuit is a three …
planar quadrature hybrid with enhanced bandwidth. The topology of the circuit is a three …
Jammer mitigation via beam-slicing for low-resolution mmWave massive MU-MIMO
Millimeter-wave (mmWave) massive multi-user multiple-input multiple-output (MU-MIMO)
promises unprecedented data rates for next-generation wireless systems. To be practically …
promises unprecedented data rates for next-generation wireless systems. To be practically …
Extension of Butler matrix number of beams based on reconfigurable couplers
A scheme to extend the beam number of Butler matrices (BMs) by utilizing reconfigurable
couplers is presented and illustrated with experimental verification. The beam number of a …
couplers is presented and illustrated with experimental verification. The beam number of a …
On the design of a single-layer wideband Butler matrix for switched-beam UMTS system applications [Wireless Corner]
TN Kaifas, JN Sahalos - IEEE Antennas and Propagation …, 2006 - ieeexplore.ieee.org
A Butler matrix (BM) for UMTS applications is presented. The Butler matrix was fabricated by
conventional photolithography on a single laminate. The design is compact and complies …
conventional photolithography on a single laminate. The design is compact and complies …
[PDF][PDF] Design and implementation of a smart antenna using butler matrix for ISM-band
AM El-Tager, MA Eleiwa - Progress In Electromagnetics Research …, 2009 - academia.edu
In this paper, an ISM-band smart antenna system of 4-element microstrip linear array
antenna with Butler matrix beamforming network is designed, analyzed and implemented …
antenna with Butler matrix beamforming network is designed, analyzed and implemented …
Dual-band Butler matrix for WLAN systems
C Collado, A Grau, F De Flaviis - IEEE MTT-S International …, 2005 - ieeexplore.ieee.org
This paper shows the design of a dual-band Butler matrix aimed to cover the bands
corresponding to the standards IEEE802. 11a/b, with particular interest in WLAN systems, at …
corresponding to the standards IEEE802. 11a/b, with particular interest in WLAN systems, at …
A compact LTCC Butler matrix realization for phased array applications
G Tudosie, H Barth, R Vahldieck - 2006 IEEE MTT-S …, 2006 - ieeexplore.ieee.org
A Compact LTCC Butler Matrix Realization for Phased Array Applications Page 1 441 A
Compact LTCC Butler Matrix Realization for Phased Array Applications George Tudosie …
Compact LTCC Butler Matrix Realization for Phased Array Applications George Tudosie …
Compact 4 4 Multilayer Butler Matrix With Four-Slot Array
Novel multilayer Butler matrix (BM) miniaturizing layouts applicable to any are proposed,
reducing the conventional size by more than twofold. The layouts eliminate crossover …
reducing the conventional size by more than twofold. The layouts eliminate crossover …