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;
