Theory and Design of the Surface Acoustic Wave Multistrip Coupler

Marshall, F.G.; Newton, C.O.; Paige, E.G.S.

doi:10.1109/tmtt.1973.1127971

Cited by 66 publications

(5 citation statements)

References 15 publications

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“…Other particular IDT structures can also be implemented during the design process in order to achieve a specific response pattern, such as apodization [32], weighted IDT transducers [33], multistrip couplers (MSCs) [34], etc. All these optimizations aim to reduce the impacts of spurious modes or secondary effects, to better confine the acoustic energy and improve the Q value, and therefore to improve the performances of SAW devices.…”

Section: Typical Characterizationsmentioning

confidence: 99%

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Trends and Applications of Surface and Bulk Acoustic Wave Devices: A Review

2022

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The past few decades have witnessed the ultra-fast development of wireless telecommunication systems, such as mobile communication, global positioning, and data transmission systems. In these applications, radio frequency (RF) acoustic devices, such as bulk acoustic waves (BAW) and surface acoustic waves (SAW) devices, play an important role. As the integration technology of BAW and SAW devices is becoming more mature day by day, their application in the physical and biochemical sensing and actuating fields has also gradually expanded. This has led to a profusion of associated literature, and this article particularly aims to help young professionals and students obtain a comprehensive overview of such acoustic technologies. In this perspective, we report and discuss the key basic principles of SAW and BAW devices and their typical geometries and electrical characterization methodology. Regarding BAW devices, we give particular attention to film bulk acoustic resonators (FBARs), due to their advantages in terms of high frequency operation and integrability. Examples illustrating their application as RF filters, physical sensors and actuators, and biochemical sensors are presented. We then discuss recent promising studies that pave the way for the exploitation of these elastic wave devices for new applications that fit into current challenges, especially in quantum acoustics (single-electron probe/control and coherent coupling between magnons and phonons) or in other fields.

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Section: Typical Characterizationsmentioning

confidence: 99%

Section: Basic Principles Of Saw and Baw Devicesmentioning

confidence: 99%

Trends and Applications of Surface and Bulk Acoustic Wave Devices: A Review

2022

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“…The BAW has higher frequency than SAW, and can produce some ripples and spurious components in response curve [26]. The SAW and BAW excited by input IDT will be bidirectional transmission, and the MSC can fully transfer SAW without affecting BAW to continue to propagate in the primitive acoustic track [13,27]. In this case, the SAW and the BAW launched by input IDT can be separated into different tracks.…”

Section: Working Principles Of Sensormentioning

confidence: 99%

A novel NO2 gas sensor using dual track SAW device

Wen

Chen

et al. 2010

Sensors and Actuators A: Physical

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“…This inefficiency is overcome by using two apodized transducers, so that both can contribute to the skirt selectivity. To accomplish this, a multistrip coupler (MSC) is required between the transducers [7,8] to convert the spatially nonuniform acoustic wave generated by one of the apodized transducers into a spatially uniform wave so that it can be received by the other apodized transducer. In the conversion, the MSC preserves the amplitude and phase information of the incident wave.…”

Section: K 2 Gamentioning

confidence: 99%