State-of-the-Art Elastic SAW Convolvers

Grassl, H; Reindl, L.; Wörz, H.W.

doi:10.1007/978-3-642-83508-7_1

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…At present convolvers with an integration time up to 16 gs and bandwidth up to 160 MHz are commercially available and can be tailored to the customer's specifications (38). They were used as channel sounders (39).…”

Section: Js (W)hf-{l Dt= Max If S0(t)=h(-t)=h(-x/v)mentioning

confidence: 99%

Saw-Based Radio Sensor and Communication Techniques

Seifert

Weigel²

1997

27th European Microwave Conference, 1997

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Surface acoustic waves can be generated at the free surface of an elastic solid. This phenomenon has been exploited for electronic analog signal processing over the past 30 years, with the development of a host of devices and systems for consumer, commercial and military applications running at a some hundred million dollar annual rate. The objective of this paper is to provide an overview of the latest developments in the surface acoustic wave (SAW) field and to identify upcoming applications in remote sensing and communications. It. is intended to address some of the key issues in the successful design and manufacture of SAW devices and to discuss the operating principles from a microwave design viewpoint.

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Section: Js (W)hf-{l Dt= Max If S0(t)=h(-t)=h(-x/v)mentioning

confidence: 99%

Saw-Based Radio Sensor and Communication Techniques

Seifert

Weigel²

1997

27th European Microwave Conference, 1997

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“…To the authors' knowledge, detailed investigations of nonlinear propagation effects in connection with SAWs began in the mid-sixties of the previous century (for a review see [16]). The field was boosted by the development of the elastic convolver, an analog, nonlinear, signal-processing device based on SAWs, which, however, did not reach the market (see the reviews [17,18]). Here, electro-acoustic nonlinearity was a desired effect.…”

Section: Introductionmentioning

confidence: 99%

FEM Modeling of Electro-Acoustic Nonlinearities in Surface Acoustic Wave Devices: A Methodological Review

Mayer

Mayer³

et al. 2023

Acoustics

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In the framework of electro-elasticity theory and the finite element method (FEM), a model is set up for the computation of quantities in surface acoustic wave (SAW) devices accounting for nonlinear effects. These include second-order and third-order intermodulations, second and third harmonic generation and the influence of electro-acoustic nonlinearity on the frequency characteristics of SAW resonators. The model is based on perturbation theory, and requires input material constants, e.g., the elastic moduli up to fourth order for all materials involved. The model is two-dimensional, corresponding to an infinite aperture, but all three Cartesian components of the displacement and electrical fields are accounted for. The first version of the model pertains to an infinite periodic arrangement of electrodes. It is subsequently generalized to systems with a finite number of electrodes. For the latter version, a recursive algorithm is presented which is related to the cascading scheme of Plessky and Koskela and strongly reduces computation time and memory requirements. The model is applied to TC-SAW systems with copper electrodes buried in an oxide film on a LiNbO3 substrate. Results of computations are presented for the electrical current due to third-order intermodulations and the displacement field associated with the second harmonic and second-order intermodulations, generated by monochromatic input tones. The scope of this review is limited to methodological aspects with the goal to enable calculations of nonlinear quantities in SAW devices on inexpensive and easily accessible computing platforms.

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Acoustics, Nonlinear

Beyer

2003

Digital Encyclopedia of Applied Physics

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State-of-the-Art Elastic SAW Convolvers

Cited by 3 publications

References 13 publications

Saw-Based Radio Sensor and Communication Techniques

Saw-Based Radio Sensor and Communication Techniques

FEM Modeling of Electro-Acoustic Nonlinearities in Surface Acoustic Wave Devices: A Methodological Review

Acoustics, Nonlinear

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