Abstract

Weighted surface acoustic wave reflector gratings for coding identification tags and sensors enable unique sensor operation and identification for a multi-sensor environment. In an embodiment, the weighted reflectors are variable while in another embodiment the reflector gratings are apodized. The weighting technique allows the designer to decrease reflectively and allows for more chips to be implemented in a device and, consequently, more coding diversity. As a result, more tags and sensors can be implemented using a given bandwidth when compared to uniform reflectors. Use of weighted reflector gratings with OFC makes various phase shifting schemes possible, such as in-phase and quadrature implementations of coded waveforms resulting in reduced device size and increased coding.

Document Type

Patent

Patent Number

US 7,961,105

Application Serial Number

12/780,321

Issue Date

6-14-2011

Current Assignee

UCFRF

Assignee at Issuance

UCFRF

College

College of Engineering and Computer Science (CECS)

Department

Electrical Engineering & Computer Science - CS Division

Allowance Date

2-7-2011

Filing Date

5-14-2010

Assignee at Filing

UCFRF

Filing Type

Nonprovisional Application Record

Donated

no

Download Patent

Share

COinS