Abstract

This thesis presents a novel design method for approximating standard bandpass filter transfer functions using surface acoustic wave (SAW) technology. This method is based on standard circuit simulation and optimization tools to generate physical specifications for the fabrication of a SAW impedance element filter (IEF) network. The IEF topology is verified in the design of a narrowband bandpass filter composed of commercial quartz SAW resonators. The utility of the design method is further demonstrated for a wider bandwidth filter based on custom resonators fabricated on a lithium niobate substrate. An optimum fit was obtained between the standard filter target response and the corresponding SAW IEF response. Comparisons made between the two networks show that by exploiting the high Q characteristics of SAW devices in an IEF configuration, smaller footprints and tighter filter tolerances are obtained.

Library of Congress Subject Headings

Acoustic surface wave devices--Design and construction; Signal processing

Publication Date

12-1-2009

Document Type

Thesis

Department, Program, or Center

Electrical Engineering (KGCOE)

Advisor

Bowman, Robert

Comments

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works. Physical copy available through RIT's The Wallace Library at: TK5981 .D46 2009

Campus

RIT – Main Campus

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