Fast Analysis Of Acoustic Resonators For The Rapidly Growing Premium RF Filter Market

How to get more detailed simulation data in less time.


Acoustic resonator filters have been used in cell phones since the early 2G wireless standard. Now, typical smart phones employ 30 or more filters as mobile carriers push to support more and more data bands as well as Wi-Fi, Bluetooth and GPS. Market pressure for these RF filters to be compact and inexpensive, yet meet the higher performance requirements of the 4G standards, has spurred great interest in novel filter design concepts that further miniaturize the transmit/receive chain of RF front ends. The first successful filters were surface acoustic wave (SAW) filters, but in the past few years the number of bulk acoustic wave (BAW or FBAR) filters within a handset has grown rapidly to fill the market demand above 1 GHz, where SAW device performance degrades. Most recently, bulk mode resonators that vibrate in plane to allow multi-frequency filters on one substrate have garnered significant interest within the research community. These in-plane bulk-mode resonators come by various names such as contour-mode resonators (CMR) and laterally-vibrating resonators (LVR).

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