Thin Film Acoustoelectric GHz SAW Amplifier Design

Malocha, D.C.; Carmichael, Christopher; Smith, Marshall S.; Weeks, Arthur R.

doi:10.1109/ultsym.2018.8579763

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…40) Recently, the graphene thin film were coated on the SAW device and the amplification of the SAW was observed. 41) When the drift velocity by applying DC to the film is faster than the phase velocity of the SAW, the amplification is realized. In this study, however, the mechanism is different.…”

Section: Resultsmentioning

confidence: 99%

A study of interaction surface acoustic wave with localized surface plasmon resonance

Sano

Kondoh

2019

Jpn. J. Appl. Phys.

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A surface acoustic wave (SAW) has the ability to manipulate droplets, and a localized surface plasmon resonance (LSPR) is expected to be utilized for biosensors. By integrating both of them on a single substrate, it is possible to create a new microfluidic system. In order to achieve this goal, the interaction the SAW with the LSPR was investigated by fabricating the substrate and measuring. As a result, it was found that the reflectance characteristics of the LSPR decreased and the spectrum shift in the short wavelength direction was observed during the SAW generated. The reason was experimentally considered and found that the LSPR was influenced from the temperature distribution on the SAW device. On the other hand, the increase of the SAW amplitude was observed by the LSPR excited. The results obtained indicate that control of the temperature is necessary to integrate the SAW and LSPR on the same substrate.

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Section: Resultsmentioning

confidence: 99%

A study of interaction surface acoustic wave with localized surface plasmon resonance

Sano

Kondoh

2019

Jpn. J. Appl. Phys.

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“…Surface acoustic wave devices have been developed in the early stages mainly for certain applications including signal processing [187,188], resonators, actuators [189], frequency filters [190,191], and others [192,193]. However, in the last few decades, there are a significant increase in the SAW for gas, chemical, and biochemical detection application [182].…”

Section: Reviewmentioning

confidence: 99%

A review of piezoelectric MEMS sensors and actuators for gas detection application

et al. 2023

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Piezoelectric microelectromechanical system (piezo-MEMS)-based mass sensors including the piezoelectric microcantilevers, surface acoustic waves (SAW), quartz crystal microbalance (QCM), piezoelectric micromachined ultrasonic transducer (PMUT), and film bulk acoustic wave resonators (FBAR) are highlighted as suitable candidates for highly sensitive gas detection application. This paper presents the piezo-MEMS gas sensors’ characteristics such as their miniaturized structure, the capability of integration with readout circuit, and fabrication feasibility using multiuser technologies. The development of the piezoelectric MEMS gas sensors is investigated for the application of low-level concentration gas molecules detection. In this work, the various types of gas sensors based on piezoelectricity are investigated extensively including their operating principle, besides their material parameters as well as the critical design parameters, the device structures, and their sensing materials including the polymers, carbon, metal–organic framework, and graphene.

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“…As the advances continue and multiplexity increases in future generation wireless [11], one cannot help to hypothesize that the same design philosophy of exploiting acoustics, if diffused into the implementation of other RF front components, may further reduce system size and enhance capability. In fact, attempts of such nature have been made in the past for couplers [12]- [18] and correlators [19], [20], and also more recently for delay lines [21]- [25], oscillators [26], [27], amplifier [28]- [31], impedance matching networks [32]- [35], circulators [36]- [38], and antennas [39]- [41]. Some of these demonstrations have already outperformed the state-of-the-art, while others have shown the potential to do so.…”

Section: Introductionmentioning

confidence: 99%

GHz Low-Loss Acoustic RF Couplers in Lithium Niobate Thin Film

Yang

et al. 2020

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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We present the first group of GHz low-loss acoustic radio frequency (RF) couplers using the fundamental symmetric (S0) mode in X-cut lithium niobate thin films. The demonstrated multistrip couplers (MSCs) significantly surpass the insertion loss (IL) and the operating frequency of the previous works in more compact structures, thanks to the large electromechanical coupling and low loss of S0 in lithium niobate. The design space of S0 MSCs is first explored. Devices with different coupling factors are fabricated using different numbers of strips. Based on the S0 testbed with an IL of 4.5 dB at 1 GHz, the hybrid coupler shows an IL of 7.5 dB, while the track changer shows an IL of 5.1 dB, over a 3-dB fractional bandwidth of 8%. Couplers at different frequencies (between 0.75 and 1.55 GHz) are also investigated. Upon further optimizations, the S0 MSC platform can potentially enable low-loss wideband signal processing functions toward an RF acoustic component kit.

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Thin Film Acoustoelectric GHz SAW Amplifier Design

Cited by 5 publications

References 10 publications

A study of interaction surface acoustic wave with localized surface plasmon resonance

A study of interaction surface acoustic wave with localized surface plasmon resonance

A review of piezoelectric MEMS sensors and actuators for gas detection application

GHz Low-Loss Acoustic RF Couplers in Lithium Niobate Thin Film

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