scholarly journals Beam steering in superconducting quarter-wave resonators: An analytical approach

2011 ◽  
Vol 14 (7) ◽  
Author(s):  
Alberto Facco ◽  
Vladimir Zvyagintsev
Keyword(s):  
Analytical Approach ◽  
Beam Steering ◽  
Quarter Wave

Measurement of beam steering and RF defocusing effect for a quarter-wave resonator

2019 ◽  
Vol 28 (03) ◽  
pp. 1950019
Author(s):  
Yuanshuai Qin ◽  
Zhijun Wang ◽  
Huan Jia ◽  
Yuan He ◽  
Penghui Gao ◽  
...  
Keyword(s):  
Beam Steering ◽  
Proton Accelerator ◽  
Central Position ◽  
Linear Accelerators ◽  
Simulation Code ◽  
Beam Position ◽  
Quarter Wave Resonator ◽  
Wave Resonator ◽  
Modern Physics ◽  
Quarter Wave

Quarter-wave resonators (QWRs) are being widely used in linear accelerators (linac) for acceleration of ions with low-[Formula: see text] velocity. Two effects of this kind of cavities are beam steering effect and RF defocusing effect caused by geometric asymmetry. Measurement for the two effects has been conducted by using beam position monitors (BPMs) and wires for a QWR type buncher whose frequency is 162.5[Formula: see text]MHz at Institute of Modern Physics (IMP), Chinese Academy of Sciences (CAS). Since experiment and simulation matches well, beam central position and beam envelope could be predicted in simulation code, which is beneficial for high-intensity proton accelerator design and commissioning.

scholarly journals A triple-band antenna array for next-generation wireless and satellite-based applications

2014 ◽  
Vol 8 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Asghar A. Razzaqi ◽  
Bilal A. Khawaja ◽  
Mehrab Ramzan ◽  
Muhammad Javed Zafar ◽  
Syeda Areeba Nasir ◽  
...  
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Beam Steering ◽  
Optimization Techniques ◽  
Single Element ◽  
Next Generation ◽  
Antenna Performance ◽  
Quarter Wave ◽  
Wave Transformer ◽  
Triple Band

In this paper, a triple-band 1 × 2 and 1 × 4 microstrip patch antenna array for next-generation wireless and satellite-based applications are presented. The targeted frequency bands are 3.6, 5.2 and 6.7 GHz, respectively. Simple design procedures and optimization techniques are discussed to achieve better antenna performance. The antenna is designed and simulated using Agilent ADS Momentum using FR4 substrate (εr= 4.2 and h = 1.66 mm). The main patch of the antenna is designed for 3.6 GHz operation. A hybrid feed technique is used for antenna arrays with quarter-wave transformer-based network to match the impedance from the feed-point to the antenna to 50 Ω. The antenna is optimized to resonate at triple-bands by using two symmetrical slits. The single-element triple-band antenna is fabricated and characterized, and a comparison between the simulated and measured antenna is presented. The achieved simulated impedance bandwidths/gains for the 1 × 2 array are 1.67%/7.75, 1.06%/7.7, and 1.65%/9.4 dBi and for 1 × 4 array are 1.67%/10.2, 1.45%/8.2, and 1.05%/10 dBi for 3.6, 5.2, and 6.7 GHz bands, respectively, which are very practical. These antenna arrays can also be used for advanced antenna beam-steering systems.

Functional Metasurface Quarter-Wave Plates for Simultaneous Polarization Conversion and Beam Steering

ACS Nano ◽  
2021 ◽  
Author(s):  
Yadong Deng ◽  
Cuo Wu ◽  
Chao Meng ◽  
Sergey I. Bozhevolnyi ◽  
Fei Ding
Keyword(s):  
Beam Steering ◽  
Polarization Conversion ◽  
Quarter Wave

Beam steering correction of the quarter wave resonator in the HISCL

2014 ◽  
Vol 38 (10) ◽  
pp. 107007
Author(s):  
Shu-Hui Liu ◽  
Zhi-Jun Wang ◽  
Cong Zhang ◽  
Yuan He
Keyword(s):  
Beam Steering ◽  
Quarter Wave Resonator ◽  
Wave Resonator ◽  
Quarter Wave

The Dynamics of TAT Process

2014 ◽  
Vol 35 (2) ◽  
pp. 103-133 ◽  
Author(s):  
Benoît Verdon ◽  
Catherine Chabert ◽  
Catherine Azoulay ◽  
Michèle Emmanuelli ◽  
Françoise Neau ◽  
...  
Keyword(s):  
Defense Mechanisms ◽  
Analytical Approach ◽  
Therapeutic Process ◽  
Practice Research ◽  
Rorschach Test ◽  
Mental Functioning ◽  
Projective Tests ◽  
The Subject ◽  
Latent Content ◽  
Rigorous Method

After many years of clinical practice, research and the teaching of projective tests, Shentoub and her colleagues (Debray, Brelet, Chabert & al.) put forward an original and rigorous method of analysis and interpretation of the TAT protocols in terms of psychoanalysis and clinical psychopathology. They developed the TAT process theory in order to understand how the subject builds a narrative. Our article will emphasize the source of the analytical approach developed by V. Shentoub in the 1950s to current research; the necessity of marking the boundary between the manifest and latent content in the cards; the procedure for analyzing the narrative, supported by an analysis sheet for understanding the stories' structure and identifying the defense mechanisms; and how developing hypotheses about how the mental functions are organized, as well as their potential psychopathological characteristics; and the formulation of a diagnosis in psychodynamic terms. In conjunction with the analysis and interpretation of the Rorschach test, this approach allows us to develop an overview of the subject's mental functioning, taking into account both the psychopathological elements that may threaten the subject and the potential for a therapeutic process. We will illustrate this by comparing neurotic, borderline, and psychotic personalities.

Symmetric-pair antennas for beam steering, direction finding or isotropic-reception gain

1991 ◽  
Vol 138 (4) ◽  
pp. 368 ◽  
Author(s):  
R. Benjamin ◽  
W. Titze ◽  
P.V. Brennan ◽  
H.D. Griffiths
Keyword(s):  
Beam Steering ◽  
Direction Finding ◽  
Symmetric Pair

Maxim Berezovsky C-dur symphony in a context of new biographical scenario of artist’s life-creativity

2018 ◽  
pp. 13-25
Author(s):  
Olha Shumilina
Keyword(s):  
Eighteenth Century ◽  
Instrumental Music ◽  
Analytical Approach ◽  
Spiritual Direction ◽  
Theoretical Research ◽  
Orchestral Music ◽  
Musical Life ◽  
Analysis And Synthesis ◽  
Mental Modeling ◽  
Independent Work

Relevance of the study. The article studies recently found symphony of the prominent Ukrainian composer of the second half of the eighteenth century Maxim Berezovsky. He is widely known now as the author of cyclic spiritual concerts written for the Orthodox worship, and is practically unknown as a musician instrumentalist associated with the imperial theater and the court musical life. The work of M. Berezovsky as a secular musician determined the creative interest in composing instrumental music intended for secular chamber and orchestral music. Main objective of the article is a clarification of M.Berezovsky symphony as one of secular field artworks in the light of new summaries about artist’s life-creativity. Methodology. Taking into account peculiarities of the material and the analytical approach to its study, the methods of theoretical research have been chosen(abstraction, analysis and synthesis, induction and deduction, mental modeling, ascension from abstract to concrete, etc.). Conclusions. As a result of a study the symphony analysis in a context of new authentic statements about M.Berezovsky’s life-creativity. It was stated that this artwork was written not accidentally and detects absolute awareness of the artist in all composer’s niceties – how to build a topic and build a homophonic construction based on it, in a technique of orchestral construction, form creations of that time and etc. From the beginning of his creative career, M. Berezovsky was well aware of the possibilities of the orchestra as a performer, attached to the Italian opera and instrumental music. Symphony enriches our imagination about the works of M. Berezovsky in the field of secular instrumental and operatic music and extends the range of works of the artist beyond the spiritual direction. Some signs indicate that the Symphony was not an independent work, but an overture to the opera Demofont.

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