Parametric Resonators With a Floating Rotor: Sensing Strategy for Devices With an Increased Stiffness and Compact Design

2021 ◽  
pp. 1-8
Author(s):  
Danny A. Kassie ◽  
David Elata
Keyword(s):  
Compact Design

EBG Based Compact Design of Dual Band UWB MIMO Antenna Operating in Ku/K Band

2020 ◽  
Vol 10 (4) ◽  
pp. 268
Author(s):  
Subuh Pramono ◽  
Muhammad Hamka Ibrahim ◽  
Josaphat Tetuko Sri Sumantyo
Keyword(s):  
Dual Band ◽  
Mimo Antenna ◽  
Compact Design ◽  
K Band

A compact design for narrowband optical absorber based on surface plasmon polaritons

2020 ◽  
Vol 14 (1) ◽  
pp. 015002
Author(s):  
Xinguang Hu ◽  
Cheng Zeng ◽  
Jinsong Xia ◽  
Yunji Meng
Keyword(s):  
Surface Plasmon ◽  
Surface Plasmon Polaritons ◽  
Compact Design ◽  
Plasmon Polaritons

Tailoring neutron beam properties by target-moderator-reflector optimisation

2021 ◽  
pp. 1-16
Author(s):  
Paul Zakalek ◽  
Jingjing Li ◽  
Sarah Böhm ◽  
Ulrich Rücker ◽  
Jörg Voigt ◽  
...  
Keyword(s):  
Neutron Beam ◽  
Heavy Water ◽  
Neutron Production ◽  
Neutron Sources ◽  
Light Water ◽  
Cold Neutrons ◽  
Efficient Coupling ◽  
Borated Polyethylene ◽  
Compact Design ◽  
Neutronic Performance

Compact accelerator-driven neutron sources allow to operate multiple optimised target-moderator-reflector (TMR) units adapted to the requirements of the respective instruments. The compact design of the TMR units allows an efficient coupling of neutron production, neutron moderation and extraction, but requires a novel way of optimisation. The neutronic performance of different TMR units based on polyethylene, heavy water and a mixture of heavy and light water moderators together with Pb and Be reflectors and a borated polyethylene absorber is discussed. Extraction channels for thermal and cold neutrons are investigated regarding the energy and time spectra.

Effect of design parameters on stresses occurring at the tooth root in a spur gear pressed on a shaft

2021 ◽  
pp. 095440892199529
Author(s):  
Fatih Güven
Keyword(s):  
Internal Pressure ◽  
Tangential Stress ◽  
Spur Gear ◽  
Design Parameters ◽  
Interference Fit ◽  
Gear Design ◽  
Compact Design ◽  
Fit Tolerance ◽  
Moderate Stress ◽  
Good Agreement

Gears are commonly used in transmission systems to adjust velocity and torque. An integral gear or an interference fit could be used in a gearbox. Integral gears are mostly preferred as driving gear for a compact design to reduce the weight of the system. Interference fit makes the replacement of damaged gear possible and re-use of the shaft compared to the integral shaft. However, internal pressure occurs between mating surfaces of the components mated. This internal pressure affects the stress distribution at the root and bottom land of the gear. In this case, gear parameters should be re-considered to assure gear life while reducing the size of the gear. In this study, interference fitted gear-shaft assembly was examined numerically. The effects of rim thickness, profile shifting, module and fit tolerance on bending stress occurring at the root of the gear were investigated to optimize gear design parameters. Finite element models were in good agreement with analytical solutions. Results showed that the rim thickness of the gear is the main parameter in terms of tangential stress occurring at the bottom land of the gear. Positive profile shifting reduces the tangential stress while the pitch diameter of the gear remains constant. Also, lower tolerance class could be selected to moderate stress for small rim thickness.

A novel compact design of calibration equipment for gas and thermal sensors

2011 ◽  
Vol 82 (4) ◽  
pp. 043303 ◽  
Author(s):  
P. X. Feng ◽  
H. X. Zhang ◽  
X. Y. Peng ◽  
M. Sajjad ◽  
J. Chu
Keyword(s):  
Thermal Sensors ◽  
Compact Design

Step-Wave Switched Capacitor Converter for Compact Design of Envelope Tracking Power Supply

2017 ◽  
Vol 64 (12) ◽  
pp. 9587-9591 ◽  
Author(s):  
Qian Jin ◽  
Xinbo Ruan ◽  
Xiaoyong Ren ◽  
Yazhou Wang ◽  
Yang Leng
Keyword(s):  
Power Supply ◽  
Switched Capacitor ◽  
Envelope Tracking ◽  
Switched Capacitor Converter ◽  
Compact Design

scholarly journals Compact Design of Annular-Microstrip-Fed mmW Antenna Arrays

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3695
Author(s):  
Shu-Dong Lin ◽  
Shi Pu ◽  
Chen Wang ◽  
Hai-Yang Ren
Keyword(s):  
Antenna Arrays ◽  
Microstrip Antenna ◽  
Radiation Characteristic ◽  
60 Ghz ◽  
Outer Contour ◽  
Linear Arrays ◽  
Directional Radiation ◽  
Microstrip Antenna Array ◽  
Compact Design ◽  
Compact Array

In this paper, a series of four novel microstrip antenna array designs based on different annular-microstrip feeding lines at 60-GHz millimeter wave (mmW) band are proposed, aiming at the potential usage of the mmW coverage antenna with multi-directional property. As the feeding network, the annular contour microstrip lines are employed to connect the patch units so as to form a more compact array. Our first design is to use an outer contour annular microstrip line to connect four-direction linear arrays composed of 1 × 3 rectangular patches, thus the gain of 8.4 dBi and bandwidth of over 300 MHz are obtained. Our second design is to apply the two-direction pitchfork-shaped array each made up of two same linear arrays as the above, therefore the gain of 9.65 dBi and bandwidth of around 250 MHz are achieved. Our third design is to employ dual (inner and outer contour) annular-microstrip feeding lines to interconnect the above four-direction linear arrays, while our fourth design is to bring bridged annular-microstrip feeding lines, both of which can realize the goal of multi-directional radiation characteristic and higher gain of over 10 dBi.

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