Resonant frequency of parallel plate type uniaxially anisotropic multilayered cylindrical dielectric resonator

2011 ◽  
Vol 35 (2) ◽  
pp. 103-112 ◽  
Author(s):  
Çiŭdem Seçkin Gürel ◽  
Rumeysa Yenilmez
Keyword(s):  
Resonant Frequency ◽  
Dielectric Resonator ◽  
Parallel Plate ◽  
Plate Type

The Fluid Power Control Performance Comparison Study of Two-Type ER Valve Based on FLUENT

2012 ◽  
Vol 472-475 ◽  
pp. 1989-1994
Author(s):  
Shi Sha Zhu ◽  
Liu Tao
Keyword(s):  
Pressure Drop ◽  
Power Control ◽  
Parallel Plate ◽  
Control Volume ◽  
Flow Simulation ◽  
Control Valve ◽  
Performance Comparison ◽  
Fluid Power ◽  
Control Performance ◽  
Plate Type

The current flow and pressure drop of ER valve which is a new type power control valve could be adjusted by the electric field signal directly .In this paper, the fluid power control performance of concentric cylindrical ER valve and parallel plate-type ER valve based on ER principal is comparative studied .First power control equation has been analysed, and then flow simulation of internal flow field of ER valve has been taken based on FLUENT software. The results show that with the increasing of the strength of excitation field, the flow through the two different type of ER valve decreases, the pressure drop between import and export is even greater; and the fluid power control performance of parallel plate-type ER valve is superior to concentric cylindrical ER valve under the same control volume.

scholarly journals Design Optimization of MEMS Based LLC Tunable Resonant Converter for Power Supplies on Chip

2013 ◽  
Vol 705 ◽  
pp. 258-263
Author(s):  
Fahimullah Khan ◽  
Yong Zhu ◽  
Jun Wei Lu ◽  
Dzung Dao
Keyword(s):  
Resonant Frequency ◽  
Resonance Frequency ◽  
Parallel Plate ◽  
Power Supplies ◽  
Resonant Converter ◽  
Load Variations ◽  
Leakage Inductance ◽  
Variable Capacitor ◽  
Numerical Software ◽  
On Chip

In this paper, a novel MEMS based LLC converter is proposed for on chip power supplies. The design is optimized based on commercially available Metal MUMPs process for fabrication. The resonant frequency is optimized at 20MHz and MEMS based variable capacitor is fabricated on the chip to tune the peak resonance frequency of circuit which varies due to the load variations. The Design is simulated in FEM based numerical software COMSOL and Intellisuite. According to analysis the magnetizing inductance of 42nH and leakage inductance of 40nH has been achieved from 16 mm2 rectangular coil transformer. The total capacitance of 1500pF has been achieved from parallel plate capacitors and variation of 3pF has been achieved from variable capacitor.

scholarly journals THE USE OF (Mg0.9Zn0.1)TiO3+2wt.% Bi2O3 CERAMICS AS A DIELECTRIC RESONATOR OSCILLATOR MATERIAL AND CHARACTERISATION OF STRUCTURE, MICROSTRUCTURE, AND DENSITY

2021 ◽  
Vol 13 (2) ◽  
pp. 67-79
Author(s):  
Afandy Kadarosman ◽  
Frida Ulfah Ermawati
Keyword(s):  
Sinter Temperature ◽  
Resonant Frequency ◽  
Bulk Density ◽  
Dielectric Resonator ◽  
Milled Powder ◽  
Telecommunications Industry ◽  
Lattice Parameter ◽  
Solid Surfaces ◽  
Microwave Frequencies ◽  
Frequency Position

Magnesium titanate (MgTiO3)-based ceramics have the potential for use in the telecommunications industry at microwave frequencies, including as a resonator in dielectric resonator oscillator (DRO) circuit. This research is intended to study the application of (Mg0.9Z0.1)TiO3+2wt.% Bi2O3 (abbreviated MZT01-2) ceramics as DRO material and characterize the structure, microstructure, and bulk density. Fabrication was carried out by ball milling between (Mg0.9Z0.1)TiO3 crystalline powder and 2wt.% Bi2O3 powder. The milled powder was compacted at certain pressure using a die press to become pellets. All pellets were sintered at 1000, 1100, 1200°C for 4 h to obtain ceramics. The structural characterization using XRD showed that the three ceramics contained the main MgTiO3 phase, each 93.63, 93.83, and 90.78% molar, the rest was the MgTi2O5 phase. The increase in sinter temperature causes the lattice parameter and the unit cell volume to decrease. The Archimedes bulk density was 2.928; 2.832 and 2.736 g/cm3. The microstructure is solid surfaces with a grain diameter of 1.9-2.3 μm accompanied by pores. As DRO materials, the three ceramics exhibited a resonant frequency at 5.11, 5.08, and 5.12 GHz which shows that the ceramics can be applied as DRO materials at microwave frequencies. The sinter temperature variation tends not to affect the resonant frequency position.

Parallel-Plate Type Holey-Plate Plasma Source

2002 ◽  
Vol 41 (Part 1, No. 2A) ◽  
pp. 853-855 ◽  
Author(s):  
Yoshikazu Yoshida
Keyword(s):  
Parallel Plate ◽  
Plasma Source ◽  
Plate Type

A parallel plate dielectric resonator as a wireless passive strain sensor

2015 ◽  
Author(s):  
T. Aftab ◽  
A. Yousaf ◽  
J. Hoppe ◽  
S. Stoecklin ◽  
T. Ostertag ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Parallel Plate ◽  
Strain Sensor
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