An RF-ID Reader Using SAW Dispersive Delay Lines For Wideband Synchronisation

Acoustic Field Analysis of Surface Acoustic Wave Dispersive Delay Lines Using Inclined Chirp IDT

SUMMARY Acoustic field analysis results of surface acoustic wave dispersive delay lines using inclined chirp IDTs on a Y-Z LiNbO 3 sub-strate are described. The calculated results are compared with optical measurements. The angular spectrum of the plane wave method is applied to calculation of the acoustic fields considering the anisotropy of the SAW velocity by using the polynomial approximati...

Radar Signal Feature Extraction System Based on a Saw Dispersive Delay Lines

Statistical Errors in Remote Passive Wireless SAW Sensing Employing Phase Differences

Passive remote wireless sensing employing properties of the surface acoustic wave (SAW) has gained currency during a couple of decades to measure different physical quantities such as temperature, force (pressure, torque, and stress), velocity, direction of motion, etc. with a resolution of about 1% [1]. The basic principle utilized in such a technique combines advantages of the precise piezoel...

Wideband Dispersion Analysis of Waveguide Geometries Using Finite Sampled Data

Wideband analysis of frequency dispersive geometries is a challenge in inverse scattering problems. Waveguide duct is an important case in aerial targets with dominant returns. Its dispersive behavior affects the range profile analysis due to occurrence of unwanted range extension. A new high frequency analysis using model based parameter estimation (MBPE) approach is presented. A group delay c...

Narrow electrodes on YZ-LiNbOO3 as an alternative to etched grooves for dispersive delay lines.

Narrow, open-circuited aluminum electrodes can provide controllable, weak reflectivity necessary for many applications such as surface acoustic wave (SAW) tags and dispersive delay lines (DDLs). We show, using finiteand boundary element method (FEM-BEM) based simulations and experiments, that a reflectivity of 0.3% per wavelength can be achieved easily and controlled by varying the electrode wi...