Results 11 to 20 of about 6,039,832 (276)
Steady low Mach number flows: Identification of the spurious mode and filtering method
Journal of Computational Physics, 2022 The aim of this article is to thoroughly identify the spurious mode that jeopardizes the convergence of usual upwind numerical schemes for compressible flows when the Mach number goes to 0 . We show that this spurious mode is the long time limit of a wave
Jonathan Jung, V. Perrier
semanticscholar +2 more sources
Dielectric resonators and filters for cellular base-stations [PDF]
, 2003 The investigation into three types of dielectric resonators for use in base-station filtering applications is presented. The triple-mode cubic TE016 resonator is shown to have good performance for high Q applications.
Walker, Vanessa Evelyne Guillemette
core +6 more sources
IEEE Access, 2022 This article presents a mixed finite element method to find the resonant frequencies of 3-D closed cavity resonators filled with both electric and magnetic lossy, anisotropic media. By introducing a dummy variable with zero value in the 3-D linear vector
Wei Jiang, Shiling Zheng
doaj +1 more source
Micromachines, 2022 To cope with ubiquitous wireless connectivity and the increased and faster data delivery in 5G communication, surface acoustic wave (SAW) filters are progressively requiring wider bandwidths.
Zengtian Lu +6 more
doaj +1 more source
Semiconductor Science and Technology, 2023 This work aims to solve the problem of tradeoff between various properties and spurious mode suppression in surface acoustic wave (SAW) resonators.
Shengkuo Zhang +3 more
semanticscholar +1 more source
Wideband Bandpass TM Cavity Filters With Wide Spurious Free Band
IEEE Access, 2023 Recently, the spurious self-suppression method has been introduced and applied to the bandpass TM cavity filters to improve their stopband performance. However, this method has the limitation of being applicable only to TM narrow-band filters. This paper
Abdul Rehman, Cristiano Tomassoni
doaj +1 more source
Photonics, 2022 In this study, the oscillation signal stabilization and spurious tone suppression of a directly modulated optoelectronic oscillator (DM-OEO) are simultaneously achieved by modulating a laser with a low-frequency radio frequency (RF) signal.
Jun-Hyung Cho +2 more
doaj +1 more source
Japanese Journal of Applied Physics, 2021 Four types of waveforms of AC poling (ACP) and DC poling (DCP) were applied on [001]-oriented 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 (PMN-28PT) ferroelectric single crystals (SCs) at 80 °C.
Yiqin Sun +4 more
semanticscholar +1 more source
Materials, Design, and Characteristics of Bulk Acoustic Wave Resonator: A Review
Micromachines, 2020 With the rapid commercialization of fifth generation (5G) technology in the world, the market demand for radio frequency (RF) filters continues to grow.
Yan Liu +5 more
doaj +1 more source
A Spurious-Free Characteristic Mode Formulation Based on Surface Integral Equation for Patch Antenna Structures [PDF]
IEEE Antennas and Wireless Propagation Letters, 2021 Conventional surface integral equation (SIE)-based characteristic mode formulation for the patch antenna structure with a finite substrate is susceptible to the spurious (nonphysical) modes due to the dielectric part.
Kun Fan +4 more
semanticscholar +1 more source