Performance enhancement of multi-resonant high-Q converters using a variable resonator element

Abstract In this paper, novel symmetrical split ring resonator (SSRR) is proposed as a suitable component for performance enhancement of microwave sensors. SSRR has been employed for enhancing the insertion loss of the microwave sensors. Using the same device area, we can achieve a high Q-factor of 141.54 from the periphery enhancement using Quasi-linear coupling SSRR, whereas loose coupling SSRR can achieve a Q-factor of 33.98 only. Using Quasi-linear coupling SSRR, the Q-factor is enhanced 4.16 times the loose coupling SSRR using the same device area. After the optimization was made, the SSRR sensor with loose coupling scheme has achieved a very high Qfactor value around 407.34 while quasi-linear scheme has achieved high Q-factor value of 278.78 at the same operating frequency with smaller insertion loss. Spurious passbands at 1st, 2nd, 3rd, and 4th harmonics have been completely suppressed well above -20 dB rejection level without visible changes in the passband filter characteristics. The most significant of using SSRR is to be used for various industrial applications such as food industry, quality control, bio-sensing medicine and pharmacy. The simulation result that Quasi-linear coupling SSRR is a viable candidate for the performance enhancement of microwave sensors has been verified.

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Mindful sport performance enhancement: Mental training for athletes and coaches.

10.1037/0000048-000 ◽

2018 ◽

Cited By ~ 12

Author(s):

Keith A. Kaufman ◽

Carol R. Glass ◽

Timothy R. Pineau

Keyword(s):

Performance Enhancement ◽

Sport Performance ◽

Mental Training

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Performance Enhancement, Creativity and Mental Training

PsycEXTRA Dataset ◽

10.1037/e579872013-105 ◽

2003 ◽

Author(s):

M. Bar-Eli ◽

O. Lowengart ◽

J. Goldberg ◽

S. Epstein ◽

R. D. Fosbury

Keyword(s):

Performance Enhancement ◽

Mental Training

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High-Q whispering gallery modes in pillar microcavities

Annales de Physique ◽

10.1051/anphys:2008023 ◽

2007 ◽

Vol 32 (2-3) ◽

pp. 123-126

Author(s):

Y.-R. Nowicki-Bringuier ◽

J. Claudon ◽

C. Böckler ◽

S. Reitzenstein ◽

M. Kamp ◽

...

Keyword(s):

Whispering Gallery Modes ◽

High Q ◽

Whispering Gallery

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Effective performance improvement of organic thin film transistors with multi-layer modifications

The European Physical Journal Applied Physics ◽

10.1051/epjap/2020200138 ◽

2020 ◽

Vol 91 (3) ◽

pp. 30201

Author(s):

Hang Yu ◽

Jianlin Zhou ◽

Yuanyuan Hao ◽

Yao Ni

Keyword(s):

Thin Film ◽

Thin Film Transistors ◽

Performance Enhancement ◽

Organic Thin Film Transistors ◽

Electrical Performance ◽

Hole Injection ◽

Organic Thin Film ◽

Effective Performance ◽

Significant Performance ◽

P Type

Organic thin film transistors (OTFTs) based on dioctylbenzothienobenzothiophene (C8BTBT) and copper (Cu) electrodes were fabricated. For improving the electrical performance of the original devices, the different modifications were attempted to insert in three different positions including semiconductor/electrode interface, semiconductor bulk inside and semiconductor/insulator interface. In detail, 4,4′,4′′-tris[3-methylpheny(phenyl)amino] triphenylamine (m-MTDATA) was applied between C8BTBTand Cu electrodes as hole injection layer (HIL). Moreover, the fluorinated copper phthalo-cyanine (F16CuPc) was inserted in C8BTBT/SiO2 interface to form F16CuPc/C8BTBT heterojunction or C8BTBT bulk to form C8BTBT/F16CuPc/C8BTBT sandwich configuration. Our experiment shows that, the sandwich structured OTFTs have a significant performance enhancement when appropriate thickness modification is chosen, comparing with original C8BTBT devices. Then, even the low work function metal Cu was applied, a normal p-type operate-mode C8BTBT-OTFT with mobility as high as 2.56 cm2/Vs has been fabricated.

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Performance enhancement of normal contact ratio gearing system through correction factor

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.3.2019.03.0429 ◽

2019 ◽

Vol 13 (3) ◽

pp. 5242-5258

Author(s):

R. Ravivarman ◽

K. Palaniradja ◽

R. Prabhu Sekar

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Correction Factor ◽

Bending Strength ◽

Performance Enhancement ◽

Transmission Ratio ◽

Contact Ratio ◽

Element Analysis ◽

Normal Contact ◽

Root Region

As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.

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