High Quality

Author

Carr, Paul H.

Author_Institution

Received B.S. and M.S. degrees in physics from Massachusetts Institute of Technology and a Ph.D. in physics from Brandeis University.

Volume

3

Issue

3

fYear

2011

Firstpage

17

Lastpage

19

Abstract

Ken Laker advanced surface acoustic wave (SAW) filter and resonator technology with significant decreases in the size, weight, and cost of oscillators, fast frequency-measuring filter banks, and compact fast-frequency- hopping synthesizers. His compact SAW resonator chip at 780 MHz had a Q factor of almost 5,000, five times that of larger electromagnetic equivalents. His technique of designing withdrawal-weighted SAW transversal filters increased out-of-band rejection from 30 dB to more than 60 dB.

Keywords

Q-factor; channel bank filters; electromagnetic waves; surface acoustic wave oscillators; surface acoustic wave resonator filters; Ken Laker; Q factor; SAW filter; SAW transversal filters; compact SAW resonator chip; electromagnetic equivalents; frequency 780 MHz; frequency-hopping synthesizers; frequency-measuring filter banks; high quality; oscillator cost; surface acoustic wave filter; Electrodes; Filter banks; Frequency measurement; Resonator filters; Surface acoustic waves; Transducers; Transversal filters;

fLanguage

English

Journal_Title

Solid-State Circuits Magazine, IEEE

Publisher

ieee

ISSN

1943-0582

Type

jour

DOI

10.1109/MSSC.2011.941727

Filename

5981584