6H-1 Reflector Design for Orthogonal Frequency (OFC) Coded Devices

Author

Malocha, D.C. ; Puccio, D. ; Lobo, N.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Univ. of Central Florida, Orlando, FL

fYear

2006

fDate

2-6 Oct. 2006

Firstpage

820

Lastpage

824

Abstract

This paper will describe design considerations for orthogonal frequency coded (OFC) devices using reflector structures. The OFC device uses inline reflector banks composed of chips having differing local carrier frequencies and a time length corresponding to a chip. In order to optimize device performance, it is necessary to understand and predict reflector performance. Several parameters which need to be understood include reflector length, reflectivity per electrode, number of electrodes, intra- and inter- electrode interactions, chip orthogonality, fractional bandwidth and reflector loss. This paper will present predictive results based on phenomenological approaches and then verified using coupling of mode (COM) simulations. Experimental results for a 250 MHz OFC device show good correlation with predictions

Keywords

surface acoustic wave devices; 250 MHz; chip orthogonality; coupling of mode simulations; fractional bandwidth; inline reflector banks; interelectrode interactions; intraelectrode interactions; orthogonal frequency coded devices; reflector design; reflector loss; Bandwidth; Computer science; Electrodes; Frequency response; Frequency shift keying; Insertion loss; Intersymbol interference; Predictive models; Surface acoustic waves; Time factors;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2006. IEEE

Conference_Location

Vancouver, BC

ISSN

1051-0117

Print_ISBN

1-4244-0201-8

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2006.214

Filename

4152070