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AssigneeAgere Systems Inc.
InventorsBradley Paul Barber, Harold Alexis Huggins, Ronald Eugene Miller, Donald Winslow Murphy, Yiu-Huen Wong
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A reflector stack or acoustic mirror arrangement for an acoustic device is described which may attain the highest possible impedance mismatch between alternating higher and lower impedance reflecting layers of the stack, so as to maximize bandwidth. The arrangement may also reduce manufacturing costs by requiring fewer layers for the device, as compared to conventional acoustic mirrors. The thinner reflecting stack is accordingly fabricated in reduced time to lower cost, by incorporating materials providing a larger acoustic impedance mismatch than those currently obtainable. The bandwidth of the resulting acoustic resonator device may be widened, particularly when a low density material such as aerogel, CVD SiO2 and/or sputter deposited SiO2 is applied as topmost layer in the reflector stack/acoustic mirror arrangement of the device.
A reflector stack for an acoustic device, comprising:
A reflector stack for an acoustic device, comprising:
A reflector stack for an acoustic device, comprising:
A reflector stack for an acoustic device, comprising:
A reflector stack for an acoustic device, comprising:
Dependencies are inferred from the claim text.