Comparative Study of Traditional and Broadband Piston Mode Designs of A1-Mode Resonators on Lithium Niobate

2021 ◽  
Author(s):  
Yawei Li ◽  
Qi Liang ◽  
Yu-Po Wong ◽  
Keyuan Gong ◽  
Zhaohui Wu ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Comparative Study ◽  
Piston Mode

Wideband double-mode bulk acoustic wave resonator filters on lithium niobate using periodically slotted electrodes

2021 ◽  
Author(s):  
Ting Wu ◽  
Yu-Po Wong ◽  
Yiwen He ◽  
Jing-Fu Bao ◽  
Ken-ya Hashimoto
Keyword(s):  
Lithium Niobate ◽  
Frequency Separation ◽  
Bulk Acoustic Wave ◽  
3D Analysis ◽  
Transverse Modes ◽  
Resonance Modes ◽  
Bulk Acoustic Wave Resonator ◽  
Wave Resonator ◽  
Piston Mode ◽  
Resonator Filters

Abstract Abstract: This paper discusses applicability of periodically slotted electrodes for realization of wideband transversely-coupled double-mode resonator filters using lithium niobate (LN) thin plate. First, two-dimensional analysis is carried out, and it is shown that the periodic structure is effective to control the frequency separation between two resonance modes, and synthesis of the fractional bandwidth larger than 24% is achievable. Next, 3D analysis is performed for suppression of spurious resonances. It is shown that the mass loading at aperture edges is effective for the piston mode operation, and transverse modes can be well suppressed. It is also pointed out that the bottom electrode should be covered only the aperture region and removed from the busbar and gap regions for suppression of unwanted resonances. With these proper edge treatments, spurious-free and wide passband can be synthesized.

A comparative study on the domain switching characteristics of near stoichiometric lithium niobate and lithium tantalate single crystals

2005 ◽  
Vol 120 (1-3) ◽  
pp. 125-129 ◽  
Author(s):  
S. Ganesamoorthy ◽  
M. Nakamura ◽  
S. Takekawa ◽  
S. Kumaragurubaran ◽  
K. Terabe ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Comparative Study ◽  
Single Crystals ◽  
Domain Switching ◽  
Lithium Tantalate ◽  
Switching Characteristics

Spurious free thickness shear bulk acoustic resonators on lithium niobate using standard and broadband piston mode designs

2021 ◽  
Author(s):  
Ting Wu ◽  
Yu-Po Wong ◽  
Yiwen He ◽  
Chuan Peng ◽  
Jing-Fu Bao ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Transverse Mode ◽  
Complete Suppression ◽  
Two Dimensional ◽  
Mode Structure ◽  
Acoustic Resonators ◽  
Mode Design ◽  
Dimensional Finite Element ◽  
Piston Mode ◽  
Thickness Shear

Abstract This paper describes design and fabrication of sprious-free thickness shear bulk acoustic resonators (TSBARs) using the lithium niobate (LN) plate. Previously, the authors conjected from the experiment on the TSBAR that cutoff edges with crystal LN X-plane serve as ideal reflectors for the piston mode operation, and complete suppression is possible by adding the standard piston mode design to the other edges normal to the X-axis. Following to this conjecture, the traditional piston mode structure is designed by the traditional two-dimensional finite element method, and the TSBAR is fabricated following to the design. The experiment showed complete suppression of the transverse mode resonances, and the conjecture was verified.

Comparative study of defect structures in lithium niobate with different compositions

1992 ◽  
Vol 101 (2) ◽  
pp. 340-352 ◽  
Author(s):  
N. Iyi ◽  
K. Kitamura ◽  
F. Izumi ◽  
J.K. Yamamoto ◽  
T. Hayashi ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Comparative Study ◽  
Defect Structures

scholarly journals Comparative study of 0° X-cut and Y + 36°-cut lithium niobate high-voltage sensing

2015 ◽  
Vol 86 (8) ◽  
pp. 085001 ◽  
Author(s):  
N. Patel ◽  
D. W. Branch ◽  
E. Schamiloglu ◽  
S. Cular
Keyword(s):  
Lithium Niobate ◽  
Comparative Study ◽  
High Voltage ◽  
Voltage Sensing

Comparative study of impurities in lithium tantalite and lithium niobate

2018 ◽  
Vol 143 (3) ◽  
pp. 1918-1918
Author(s):  
Chandrima Chatterjee ◽  
Daniel Miller ◽  
Igor Ostrovskii
Keyword(s):  
Lithium Niobate ◽  
Comparative Study

scholarly journals EFFECT OF THE SYNTHESIS TEMPERATURE ON THE STRUCTURE OF SODIUM-LITHIUM NIOBATE CERAMICS

2020 ◽  
pp. 644-651
Author(s):  
Ольга Витальевна Малышкина ◽  
Кирилл Валерьевич Пацуев ◽  
Александра Ивановна Иванова
Keyword(s):  
Phase Transition ◽  
Dielectric Properties ◽  
Lithium Niobate ◽  
Comparative Study ◽  
Piezoelectric Ceramics ◽  
Synthesis Temperature ◽  
Sodium Niobate ◽  
Significant Dependence ◽  
Grain Formation

Авторами получены образцы и проведено исследование структуры и диэлектрических свойств пьезоэлектрической керамики на основе ниобатов натрия и лития (LiNa) NbO при различных технологиях синтеза материала ниобата натрия. Проведено сравнительное исследование структуры и диэлектрических свойств полученных образцов. Показана существенная зависимость зернообразования в процессе спекания образцов от температуры синтеза состава NaNbO. Установлено, что температура фазового перехода сильно зависит от температуры первого синтеза ниобата натрия (первый синтез при температуре 650 °С - T ~ 375 °С, при температуре первый синтез 700 °С - Т = 425 °С). The authors synthesized samples and studied the structure of piezoelectric ceramics based on sodium and lithium niobates (LiNa)NbO with various technologies for the synthesis of sodium niobate material. A comparative study of the structure and dielectric properties of the obtained samples was carried out. A significant dependence of grain formation during sintering of the samples on the synthesis temperature of the NaNbO composition is shown. It was found that the temperature of the phase transition strongly depends on the temperature of the first synthesis of the sodium niobate (T ~ 375 °С if the first synthesis temperature was 650 °С; T=425 °С if the first synthesis temperature is 700 °С).

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