Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene π orbitals.
Network Covalent Solids02:18

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
Network Function of a Circuit01:25

Network Function of a Circuit

Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
Simplified Synchronous Machine Model01:30

Simplified Synchronous Machine Model

The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Fully planar proton-exchanged lithium niobate waveguides with grating taps.

Applied optics·2010
Same author

Extended investigation on high velocity pseudo surface waves.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Investigation on recent quartz-like materials for SAW applications.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2008
Same author

Effects of layer thickness for SAW, PSAW, and HVPSAW devices.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control·2001
Same author

Varied effects of 1-octanol on gap junctional communication between ovarian epithelial cells and oocytes of Oncopeltus fasciatus, Hyalophora cecropia, and Drosophila melanogaster.

Archives of insect biochemistry and physiology·1999
Same author

Is it safe to go to work anymore?

Caring : National Association for Home Care magazine·1994

Related Experiment Video

Updated: Jul 7, 2026

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
10:44

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline

Published on: December 7, 2021

Arbitrarily oriented SAW gratings: network model and the coupling-of-modes description.

E L Adler1, M P da Cunha, O Schwelb

  • 1Dept. of Electr. Eng., McGill Univ., Montreal, Que.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

A new network model accurately describes surface acoustic wave (SAW) devices with nonsymmetric orientations. This model validates the coupling of modes (COM) description and offers simple formulas for COM coefficients across wide bandwidths.

More Related Videos

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Related Experiment Videos

Last Updated: Jul 7, 2026

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
10:44

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline

Published on: December 7, 2021

Writing Bragg Gratings in Multicore Fibers
08:48

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Area of Science:

  • Electrical Engineering
  • Materials Science
  • Acoustics

Background:

  • Surface Acoustic Wave (SAW) devices are crucial for signal processing.
  • Existing models often struggle with nonsymmetric orientations and arbitrary crystallographic cuts.
  • Accurate modeling is essential for optimizing SAW device performance.

Purpose of the Study:

  • To develop a comprehensive network model for SAW structures with arbitrary orientations.
  • To evaluate the phenomenological coupling of modes (COM) description using the new model.
  • To derive simplified, explicit formulas for COM coefficients.

Main Methods:

  • A unit-cell-based network model incorporating transmission lines and a novel reactive element for asymmetry.
  • Perturbation formulas to calculate the additional reactive element.
  • Comparison of model predictions with analytical COM formulas and numerical calculations.

Main Results:

  • The network model accurately accounts for energy storage and asymmetry in SAW structures.
  • The incremental COM description can be derived from the network model.
  • New, simple explicit formulas for COM coefficients were derived, showing good accuracy over a 30% relative bandwidth.

Conclusions:

  • The proposed network model provides a robust framework for analyzing SAW devices with complex orientations.
  • The derived formulas offer a computationally efficient way to predict COM coefficients.
  • This work advances the design and understanding of high-performance SAW gratings.