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Towards single-chip radiofrequency signal processing via acoustoelectric electron–phonon interactions
- Source :
- Nature Communications, Vol 12, Iss 1, Pp 1-11 (2021)
- Publication Year :
- 2021
- Publisher :
- Nature Portfolio, 2021.
-
Abstract
- The addition of active, nonlinear, and nonreciprocal functionalities to passive piezoelectric acoustic wave technologies could enable all-acoustic and therefore ultra-compact radiofrequency signal processors. Toward this goal, we present a heterogeneously integrated acoustoelectric material platform consisting of a 50 nm indium gallium arsenide epitaxial semiconductor film in direct contact with a 41° YX lithium niobate piezoelectric substrate. We then demonstrate three of the main components of an all-acoustic radiofrequency signal processor: passive delay line filters, amplifiers, and circulators. Heterogeneous integration allows for simultaneous, independent optimization of the piezoelectric-acoustic and electronic properties, leading to the highest performing surface acoustic wave amplifiers ever developed in terms of gain per unit length and DC power dissipation, as well as the first-ever demonstrated acoustoelectric circulator with an isolation of 46 dB with a pulsed DC bias. Finally, we describe how the remaining components of an all-acoustic radiofrequency signal processor are an extension of this work. Radio frequency signal processing (RFSP) currently involves a mix of components with differing operation principles, which hinders miniaturisation. Here, Hackett et al. succeed in creating acoustic non-reciprocal circulators, amplifiers, and passive filters, paving the way for all acoustic single-chip RFSP.
- Subjects :
- Multidisciplinary
Materials science
business.industry
Amplifier
Science
Circulator
Surface acoustic wave
Lithium niobate
General Physics and Astronomy
020206 networking & telecommunications
02 engineering and technology
General Chemistry
Acoustic wave
Dissipation
021001 nanoscience & nanotechnology
Piezoelectricity
General Biochemistry, Genetics and Molecular Biology
chemistry.chemical_compound
chemistry
0202 electrical engineering, electronic engineering, information engineering
Optoelectronics
0210 nano-technology
business
Indium gallium arsenide
Subjects
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 12
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....f0f0a6411fe7742c0ec69de0ff1e68aa