Electrostatically Actuated Two-Dimensional Optical Scanner Having a High Resonant Frequency Ratio of Fast/Slow Axes

2008 ◽  
Vol E91-C (10) ◽  
pp. 1611-1615 ◽  
Author(s):  
H. NOGE ◽  
Y. HAGIHARA ◽  
K. KAWANO ◽  
H. UEDA ◽  
T. YOSHIHARA
Keyword(s):  
Resonant Frequency ◽  
Frequency Ratio ◽  
Two Dimensional ◽  
Electrostatically Actuated ◽  
Optical Scanner ◽  
High Resonant Frequency

scholarly journals Design of a Novel Miniaturized Frequency Selective Surface Based on 2.5-Dimensional Jerusalem Cross for 5G Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Peng Zhao ◽  
Yihang Zhang ◽  
Rongrong Sun ◽  
Wen-Sheng Zhao ◽  
Yue Hu ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Frequency Selective Surface ◽  
Size Reduction ◽  
Two Dimensional ◽  
Physical Insight ◽  
Frequency Selective ◽  
Significant Size ◽  
Insight Into

A compact frequency selective surface (FSS) for 5G applications has been designed based on 2.5-dimensional Jerusalem cross. The proposed element consists of two main parts: the successive segments of the metal traces placed alternately on the two surfaces of the substrate and the vertical vias connecting traces. Compared with previous published two-dimensional miniaturized elements, the transmission curves indicate a significant size reduction (1/26 wavelengths at the resonant frequency) and exhibit good angular and polarization stabilities. Furthermore, a general equivalent circuit model is established to provide direct physical insight into the operating principle of this FSS. A prototype of the proposed FSS has been fabricated and measured, and the results validate this design.

Linearization of electrostatically actuated surface micromachined 2-D optical scanner

2001 ◽  
Vol 10 (2) ◽  
pp. 205-214 ◽  
Author(s):  
H. Toshiyoshi ◽  
W. Piyawattanametha ◽  
Cheng-Ta Chan ◽  
M.C. Wu
Keyword(s):  
Electrostatically Actuated ◽  
Optical Scanner

A Novel Optical Scanner with Integrated Two-Dimensional Magnetostrictive Actuation and Two-Dimensional Piezoresistive Detection

2001 ◽  
pp. 1300-1303 ◽  
Author(s):  
Tarik Bourouina ◽  
Eric Lebrasseur ◽  
Gilbert Reyne ◽  
Hiroyuki Fujita ◽  
Takahisa Masuzawa ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Optical Scanner

On Wake-Induced Flutter of a Circular Conductor in the Wake of Another

1980 ◽  
Vol 102 (2) ◽  
pp. 125-137 ◽  
Author(s):  
Y. T. Tsui ◽  
C. C. Tsui
Keyword(s):  
Transmission Line ◽  
Coupling Coefficient ◽  
Frequency Ratio ◽  
Horizontal Axis ◽  
The Other ◽  
Two Dimensional ◽  
Coupling Ratio ◽  
Aeroelastic Stability ◽  
Other Hand ◽  
The Stability

This paper, which is an extension of [1], treats two-dimensional aeroelastic stability of two coupled conductors. It is found that the wake-induced flutter is symmetric with respect to the horizontal axis of the wake for all cases provided that the sign of the static coupling coefficient, ε = kxy/kxx, is changed. It appears that the spacer coupling ratio, K/kxx = Ω/ωx, is the most important factor in determining stability. For practical purposes, the system is almost always stable for K/kxx = Ω/ωx = 0.8, because the frequency ratio, κ = ωy/ωx, deviates less than ten percent from unity for a typical transmission line. On the other hand, within our range of interest, damping has little or no effect on the stability of coupled conductors. When the windward conductor is fixed, i.e., K = 0, then damping does influence the stability of the leeward conductor.

Design of a 6-DOF VCM-Driven Micro Stage

2014 ◽  
Vol 532 ◽  
pp. 3-6 ◽  
Author(s):  
Jae Heon Jeong ◽  
Myeong Hyeon Kim ◽  
Si Woong Woo ◽  
Da Hoon Ahn ◽  
Dong Pyo Hong
Keyword(s):  
Resonant Frequency ◽  
Laser Interferometer ◽  
Voice Coil Motor ◽  
Degree Of Freedom ◽  
Out Of Plane ◽  
Gap Sensors ◽  
Moving Magnet ◽  
High Resonant Frequency

This paper presents design of micro stage performing 6 degree-of-freedom (DOF) motions, which actuated by voice coil motor (VCM). The VCMs generate forces to perform in-plane motions and out-of-plane motions. The stage is supported by springs for compensating mass of the moving part of the stage and the stiffness of the springs has been chosen to meet the moving range requirement and to have high resonant frequency at the same time. Moving magnet type has been selected against moving coil type due to few merits of the type. The size of the stage is 380 X 380 X 60 mm3 and the motions are measured by laser interferometer and gap sensors.

A Miniaturized Dual-Band FSS with Closely Spaced Resonances Using 2.5-Dimension Structure

Frequenz ◽  
2018 ◽  
Vol 72 (11-12) ◽  
pp. 511-515 ◽  
Author(s):  
Weiyang Yin ◽  
Hou Zhang ◽  
Tao Zhong ◽  
Xueliang Min
Keyword(s):  
Resonant Frequency ◽  
Free Space ◽  
Frequency Ratio ◽  
Surface Current ◽  
Dual Band ◽  
Operating Mechanism ◽  
Special Design ◽  
Measurement Results ◽  
Simulation Results ◽  
The Operating Mechanism

Abstract Using 2.5-dimension structure, a novel miniaturized dual-band FSS with closely spaced resonances is proposed in the paper. The special design of the geometry contributes to two closely spaced resonances at 1.69 GHz and 2.16 GHz respectively and the frequency ratio of upper to the lower resonant frequency is 1.27. Besides, the two bands can be controlled individually by varying corresponding parameters. The size of the proposed FSS is only 0.057λ0, where the λ0 represents free space wavelength at lower resonant band. Furthermore, the simulation results show the proposed FSS exhibits stable response with different incident angles and polarizations. To understand the design better, the distribution of surface current is analyzed to explain the operating mechanism of the proposed FSS. Finally, the proposed FSS is fabricated and the measurement results are in accordance with the simulation results.

Two Dimensional Micro Optical Scanner

2000 ◽  
Vol 103 (984) ◽  
pp. 739-742
Author(s):  
Hiromi TOTANI ◽  
Hiroshi GOTO
Keyword(s):  
Two Dimensional ◽  
Optical Scanner
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