Dr. Richard Ruby
Director of Technology, Broadcom
PhD 1984 Department of Chemical and Biomolecular Engineering, UC Berkeley
April 03, 2018 | 02:00 to 03:00 | Banatao Auditorium, Sutardja Dai Hall
Host: Richard Muller
Although FBAR has had large success in filters, both enabling and leading the aggressive mobile phone applications for 4G and 5G LTE, FBAR the resonator could enable other non-filter applications. Two broad areas where FBAR might be useful and perhaps make a profound contribution will be presented. The first area is low power radios. FBAR-enabled radios can reduce the amount of power relative to more traditional radios by eliminating the phase-locked loop (PLL) and using direct modulation at high frequencies. A niche where this is most useful is the ISM band at 2400 to 2480 MHz. Along with low power radios are the applications of extremely low noise oscillators with jitter measured in the single digit femtoseconds. Beyond radios, there is the possibility of circulators and all-digital phase-locked loop (ADPLL) spread-spectrum clocks. The second broad area is sensors. Here, the jury is still out. As a mass sensor, temperature sensor, pressure sensor, particle detector, etc., the FBAR is quite attractive. The issue is the FBAR is very sensitive to all environmental variables and the challenge will be to determine the one environmental parameter of interest and ignore all other environmental parameters.
bsac.berkeley.edu/flier | www.broadcom.com
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