RF bulk acoustic wave filters for communications

By 橋本研也. 2009

324 citations recorded by the source corpus.

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A1 Resonators in 128° Y-cut Lithium Niobate with Electromechanical Coupling of 46.4% (2020, background): “The foremost challenge is the insufficient fractional bandwidth (FBW) of the current acoustic filters based on the surface acoustic wave (SAW) [5], [6], or film bulk acoustic resonator (FBAR) [7], [8].”
Controlling phonons and photons at the wavelength scale: integrated photonics meets integrated phononics (2018, background): “For example, surface acoustic wave (SAW) resonators [1], much like thin-film bulk acoustic wave (BAW) resonators [2], have wavelength-scale confinement in only one dimension – perpendicular to the chip surface – and are therefore 1D-confined.”
Surface Acoustic Wave Devices Using Lithium Niobate on Silicon Carbide (2020, background): “In [3] and [44], single-crystal piezoelectric films are bonded to multilayered (ML) substrates, which work as reflectors and confine the energy to the surfaces of those substrates, thus”
Quantum acoustics with superconducting qubits (2017, background): “1B), which are well studied in the context of conventional HBAR technologies (20).”
The 5G Effect on RF Filter Technologies (2017, unknown): “5 GHz [4].”
Comparative Study of Acoustic Wave Devices Using Thin Piezoelectric Plates in the 3–5-GHz Range (2019, background): “In BAW devices, BAW energy is almost completely confined in the structure comprising a thin piezoelectric film layer and top and bottom electrodes [10], [11].”