Method of detecting resonant frequency, method of selecting resonance frequency, and device for detecting resonant frequency sensor

2008 ◽  
Vol 123 (1) ◽  
pp. 18
Author(s):  
Daisuke Higashihara
Keyword(s):  
Resonant Frequency ◽  
Resonance Frequency ◽  
Frequency Method ◽  
Frequency Sensor

Resonant frequency method for monitoring MEMS fabrication

2003 ◽  
Author(s):  
Danelle M. Tanner ◽  
Albert C. Owen, Jr. ◽  
Fredd Rodriguez
Keyword(s):  
Resonant Frequency ◽  
Frequency Method ◽  
Mems Fabrication

Assessment of human hemiplegic spasticity by a resonant frequency method

1988 ◽  
Vol 3 (3) ◽  
pp. 173-178 ◽  
Author(s):  
M. Lakie ◽  
E.G. Walsh ◽  
G.W. Wright
Keyword(s):  
Resonant Frequency ◽  
Frequency Method

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.

Magnetic force microscope using a direct resonance frequency sensor operating in air

1992 ◽  
Vol 61 (21) ◽  
pp. 2607-2609 ◽  
Author(s):  
A. Kikukawa ◽  
S. Hosaka ◽  
Y. Honda ◽  
S. Tanaka
Keyword(s):  
Resonance Frequency ◽  
Magnetic Force ◽  
Magnetic Force Microscope ◽  
Frequency Sensor ◽  
Direct Resonance

scholarly journals Rancang Bangun Antena Mikrostrip Bowtie Pada Frekuensi 5,2 Ghz

2018 ◽  
Vol 10 (2) ◽  
pp. 15-21
Author(s):  
Aprinal Adila Asril ◽  
Lifwarda Lifwarda ◽  
Yul Antonisfia
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Resonance Frequency ◽  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Antennas ◽  
Antenna Design ◽  
Narrow Bandwidth ◽  
Simple Materials

Microstrip antennas are very concerned shapes and sizes. Can be viewed in terms of simple materials, shapes, sizes and dimensions smaller antennae, the price of production is cheaper and able to provide a reasonably good performance, in addition to having many advantages, the microstrip antenna also has its drawbacks one of which is a narrow bandwidth. In this research will be designed a microstrip antenna bowtie which works at a frequency of 5.2 GHz which has a size of 68mm x 33mm groundplane. For the length and width of 33mm x 13mm patch. This antenna is designed on a printed cicuit board (PCB) FR4 epoxy with a dielectric constant of 4.7 and has a thickness of 1,6mm. This bowtie microstrip antenna design using IE3D software. This antenna has been simulated using IE3D software showed its resonance frequency is 5.270 GHz with a return loss -23 595 dB bandwidth of 230 MHz, VSWR 1,142, unidirectional radiation pattern and impedance 43,919Ω. The results of which have been successfully fabricated antenna with a resonant frequency of 5.21 GHz with a return loss -16.813 dB bandwidth of 79 MHz, VSWR 1.368, unidirectional radiation pattern, impedance 43,546Ω and HPBW 105 °.

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