Results 81 to 90 of about 1,200 (108)
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A Uniplanar $3\times 3$ Nolen Matrix Beamformer with Beam Squint Reduction
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 2020In this paper, a uniplanar $\mathbf{3}\times \mathbf{3}$ Nolen matrix is proposed to improve the beam squinting for spatial FFT beamformer. The proposed multiple beam feeding network has three input ports and three output ports, and the signal is divided into three equal magnitudes and features unique progressive phase shifts at its output ports for ...
Peizhao Li, Han Ren, Bayaner Arigong
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Planar $Ku$-Band 4$\,\times\,$4 Nolen Matrix in SIW Technology
IEEE Transactions on Microwave Theory and Techniques, 2010In this paper, a 4 × 4 Nolen matrix beam-forming network for multibeam antenna applications is designed and demonstrated at 12.5-GHz center frequency. The structure is implemented using substrate integrated waveguide (SIW) technology for its attractive advantages including compact size, low loss, light weight, and planar form well suitable for high ...
T. Djerafi, N.J.G. Fonseca, null Ke Wu
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A Symmetric Beam-Phased Array Fed by a Nolen Matrix Using 180° Couplers
IEEE Microwave and Wireless Components Letters, 2020This letter presents a new microstrip line-phased array using $3 \times 3$ Nolen matrix – with three inputs and three output ports. For each input port excitation, the signal is divided into three equal magnitudes and unique progressive phase shifts at its output ports. The proposed microwave network is composed of three 180° couplers with two of
Peizhao Li, Han Ren, Bayaner Arigong
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3.5 GHz BLC-Based Nolen Matrix Beamforming Network for 5G Applications
2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting (AP-S/CNC-USNC-URSI)Norhudah Seman
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Investigation of Nolen matrix beamformer usability for capacity analysis in wireless MIMO systems
2013 19th Asia-Pacific Conference on Communications (APCC), 2013This short paper presents the investigation of Nolen matrix beamforming network usability for capacity enhancement in wireless multiple-input multiple-output (MIMO) systems. The objective of this research is to thoroughly analyze and develop an analytical and mathematically-oriented investigation into system MIMO capacity improvement using a circuit ...
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Novel multi-layer SIW broadband coupler for Nolen matrix design in Ku band
2008 IEEE Antennas and Propagation Society International Symposium, 2008All the components needed for a 4 times 4 Nolen matrix have been presented for application in multi-layer SIW technology. In particular, a novel 2-layers SIW broad-band coupler has been introduced. The wide coupling dynamic range of this coupler, being stable over a relatively wideband (up to 2 GHz in the Ku-Band), makes it a reliable element for ...
A. Ali +3 more
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AEU - International Journal of Electronics and Communications
Haiwen Liu +2 more
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Haiwen Liu +2 more
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A Tunable Nolen Matrix Based on Reconfigurable Phase Shifters
2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE), 2021Jia-Zuo Cao, Fu-Chang Chen
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A Miniaturized Wideband Symmetric 3x3 Nolen Matrix with Phase Compensation Technique
2022 Asia-Pacific Microwave Conference (APMC), 2022Hongmei, Liu +4 more
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Dimension Expansion Method and Implementation of Broadband Planar 2-D 3 × 3 Nolen Matrix
IEEE Transactions on Antennas and Propagation, 2023Ye Yang +3 more
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