scholarly journals Temperature sensor tag based on supercavity mode of dielectric resonator

2021 ◽  
Vol 2015 (1) ◽  
pp. 012168
Author(s):  
Ildar Yusupov ◽  
Dmitry Filonov ◽  
Pavel Ginzburg ◽  
Mikhail Rybin ◽  
Alexey Slobozhanyuk
Keyword(s):  
Resonant Frequency ◽  
Ambient Temperature ◽  
Temperature Sensor ◽  
Dielectric Resonator ◽  
Metal Sheet ◽  
Narrow Resonance ◽  
High Q ◽  
Sensor Performance ◽  
Accurate Temperature ◽  
Ceramic Cylinder

Abstract This paper presents a wireless temperature sensor design based on the excitation of a high-Q supercavity mode in a dielectric resonator. Narrow resonance bandwidth improves sensor performance enabling accurate temperature measurements. The sensor consists of a half split ceramic cylinder attached to a metal sheet. The resonator parameters which lead to the excitation of a supercavity mode were obtained numerically. When the ambient temperature increased continuously from 23 to 120°C the notable shift of the resonant frequency was experimentally demonstrated.

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.

Rapid Characterization of Powder Mixtures through High Q Dielectric Resonator

2019 ◽  
Vol 8 (2) ◽  
pp. N13-N19 ◽  
Author(s):  
Azhar Yasin ◽  
M. Farhan Shafique ◽  
Shahid Amin ◽  
Mahmood A. Khan
Keyword(s):  
Dielectric Resonator ◽  
Powder Mixtures ◽  
High Q ◽  
Rapid Characterization
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