Results 1 to 10 of about 30,947 (290)

High-Performance and Thermally Robust A₁-Mode Lamb Wave Resonators on Bonded LiNbO₃/SiC Membranes [PDF]

Micromachines
In radiofrequency filters, there is an increasing demand for high-frequency, wide-bandwidth operation. Recently, laterally excited A1-mode Lamb wave resonators (XBARs) have attracted significant attention; however, freestanding structures are ...
Noriyuki Watanabe, Shoji Kakio, Yoshiki Sakaida, Hidehiko Oku, Shigeomi Hishiki   +4 more
doaj   +2 more sources

Coupling coefficients of different cylindrical dielectric resonators in the open space

Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2016
The calculation results of the mutual coupling coefficients of different relative sizes cylindrical dielectric resonators with magnetic modes are presented.
A. A. Trubin
doaj   +4 more sources

Enhancing film bulk acoustic resonators performance by optimizing AlN seed layer crystallinity and polarity alignment [PDF]

Nature Communications
The demand for high-performance filters in next-generation wireless communication systems underscores the limited electromechanical coupling of aluminum nitride-based film bulk acoustic resonators.
Tingting Yang, Qinwen Xu, Yaxin Wang, Yao Cai, Haiyang Li, Yupeng Zheng, Min Zeng, Jingyi Qu, Lei Li, Chao Gao, Xiyu Gu, Binghui Lin, Shishang Guo, Cheng Lei, Sheng Liu, Chengliang Sun   +15 more
doaj   +2 more sources

Extraction of Coupling Coefficients of Directional Couplers Using Resonance Splitting

IEEE Photonics Journal, 2022
We theoretically and experimentally present a novel method to accurately extract coupling coefficients of directional couplers using a single circuit. It utilizes the phenomenon of resonance splitting induced by mode coupling in a ring resonator, where ...
Ang Li, Yeshaiahu Fainman
doaj   +2 more sources

Limits of flexural wave absorption by open lossy resonators: reflection and transmission problems [PDF]

New Journal of Physics, 2019
The limits of flexural wave absorption by open lossy resonators are analytically and numerically reported in this work for both the reflection and transmission problems. An experimental validation for the reflection problem is presented.
J Leng, F Gautier, A Pelat, R Picó, J-P Groby, V Romero-García   +5 more
doaj   +5 more sources

FEM Analysis of the Effect of Polarization on the Electromechanical Coupling Factor of Resonators with a Wrap-Around Electrode

Applied Sciences, 2022
The efficiency of electromechanical conversion in piezoelectric elements is assessed according to the magnitude of the electromechanical coupling coefficient.
Josef Novák
doaj   +1 more source

Compact Planar Tunable Filter With Constant Absolute Bandwidth and Wide-Frequency Tuning Range Using DGS Coupling Structure

IEEE Access, 2021
In this study, defected ground structures (DGSs) are applied in the coupling schemes of a planar tunable filter to achieve constant absolute bandwidth (CAB).
Yun Liu, Lingyun Liu, Chen Liang, Irfan Majid   +3 more
doaj   +1 more source

Coupling coefficients of combline resonators [PDF]

SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics, 2005., 2006
Bandpass filters require elements that behave as series or parallel resonant circuits. In this paper, we discuss a variety of couplings between combline resonators in bandpass filter applications. Coupling coefficient used in filter realizations has been precisely calculated.
null Guohua Shen, D. Budimir
openaire   +1 more source

Tailoring the dispersion characteristics in planar arrays of discrete and coalesced split ring resonators

Scientific Reports, 2023
In this report, the coupling and dispersion characteristics of discrete and coalesced square resonators was investigated in the MHz regime. Resonators with one and three gaps were considered.
Ioannis Spanos, Christopher John Stevens, Laszlo Solymar, Ekaterina Shamonina   +3 more
doaj   +1 more source

An On-Chip Filter Using Near-End Cross-Coupling With Jigsaw Puzzle Shaped Resonators

IEEE Journal of the Electron Devices Society, 2023
In this paper, an on-chip band-pass filter with near-end cross-coupling (NECC) scheme is proposed based on the 0.13- $\mu \text{m}$ SiGe (Bi) CMOS processing technology.
Xin Cao, Weiping Li
doaj   +1 more source