Results 11 to 20 of about 1,200 (108)

NOVEL NOLEN MATRIX BASED BEAMFORMING NETWORKS FOR SERIES-FED LOW SLL MULTIBEAM ANTENNAS [PDF]

Progress In Electromagnetics Research B, 2013
A new type of cascaded series feed beamforming networks (BFNs) is introduced. The network architecture is based on a dual- series Nolen matrix topology. It is able to produce tapered output amplitude distributions from N £ N conflgurations. The general concept, analysis and systematic design of the BFNs are given. The networks are designed and intended
Fanourios E. Fakoukakis, George A. Kyriacou   +1 more
openaire   +1 more source

26 GHz phase shifters for multi-beam nolen matrix towards fifth generation (5G) technology

Bulletin of Electrical Engineering and Informatics, 2019
This paper presents the designs of phase shifters for multi-beam Nolen matrix towards the fifth generation (5G) technology at 26 GHz. The low-cost, lightweight and compact size 0° and 45° loaded stubs and chamfered 90°, 135° and 180° Schiffman phase shifters are proposed at 26 GHz. An edge at a corner of the 50 Ω microstrip line Schiffman phase shifter
Seman, N., Mohd. Suhaimi, N. S., Tien, H. C.   +2 more
openaire   +3 more sources

COMPACT BROADBAND 3 × 3 NOLEN MATRIX WITH FLAT OUTPUT PORTS PHASE DIFFERENCES

Progress In Electromagnetics Research Letters, 2022
Hongmei Liu, Hongxiao Zhang, Da Yu, Shao-Jun Fang, Zhongbao Wang   +4 more
openaire   +1 more source

Beamforming Phase Array Based on Aluminum Patch Antennas and Nolen 4×4 Matrix for Application in 900 MHz for Natural Events Monitoring

International Journal on Communications Antenna and Propagation (IRECAP)
[EN] This paper presents a beamforming phase array using lumped elements in the overall 4×4 Nolen matrix; the main application is for the ISM 900 MHz band for natural events monitoring. The matrix proposed develops a solution with space reduction and good performance.
Ramos, Cristina, Carrera-Suárez, Fernando, Navarro-Méndez, Diana, Baquero Escudero, Mariano   +3 more
openaire   +2 more sources

Prognostic value of plaque burden on computed tomography angiography in patients with symptomatic carotid artery disease. [PDF]

Eur Stroke J
Nies KPH, Willems JCL, van Dam-Nolen DHK, Bierens J, Schreuder TAHCML, van Orshoven NP, Bos D, de Jong PA, Nederkoorn P, Postma AA, Mess WH, van Oostenbrugge RJ, Kooi ME.   +12 more
europepmc   +1 more source

Modulation of depression through the neurobiological underpinnings of the glymphatic-rumination relationship. [PDF]

Psychol Med
Ma J, Zhang R, Lin K, Lee TMC.
europepmc   +1 more source

Centralized clinical research operations reporting for a multi-network, multi-study research program: The NHLBI COVID-19 CONNECTS experience. [PDF]

J Clin Transl Sci
Nowak K, Hanlon S, Auman J, Meier H, Asman K, Nolen T.   +5 more
europepmc   +1 more source

A cross-sectional network analysis of courage, fresh start mindset, and depression across gender and educational stage in adolescents. [PDF]

Front Psychol
He K, Cai Y, Zhan D, Yang Y, He J, Chen S, Chen K, Wang L.   +7 more
europepmc   +1 more source

The cognitive engine of evaluative threat: socially prescribed perfectionism and Music Performance Anxiety-a moderated mediation analysis of rumination and self-compassion. [PDF]

Front Psychol
Yan H, Liu C.
europepmc   +1 more source

Is rumination only negative? Effects of belief in a just world on PTSD symptoms in firefighters: a moderated mediation model. [PDF]

Front Psychol
Wu P, Hu D, Tian S, Chen S, Pan Y.
europepmc   +1 more source