Resources Contact Us Home
Switchable tunable acoustic resonator using BST material

Image Number 5 for United States Patent #8130058.

An acoustic resonator includes a first electrode, a second electrode, and a barium strontium titanate (BST) dielectric layer disposed between the first electrode and the second electrode, where the acoustic resonator is switched on as a resonator with a resonant frequency if a DC (direct current) bias voltage is applied across the BST dielectric layer. The acoustic resonator is also switched off if no DC bias voltage is applied across the BST dielectric layer. Furthermore, the resonant frequency of the acoustic resonator can be tuned based on a level of the DC bias voltage, with the resonant frequency increasing as the level of the DC bias voltage applied to the BST acoustic resonator increases.

  Recently Added Patents
Power management method for reducing power of host when turning off main monitor and computer system applying the same
Method and apparatus for accessing coconut water
Semiconductor device and manufacturing method thereof
Wafer-level chip scale package
Methods and apparatus for map detection with reduced complexity
Coordinated garbage collection for raid array of solid state disks
  Randomly Featured Patents
Structure of a mask ROM device on a semiconductor substrate having a cell area for coding
Adjusting apparatus assembly for projector
Echo cancelling device providing adjustment of the echo canceller coefficients during full-duplex transmission
Crawler tractor
Aquatic exercise float
Wireless charging transmitter for portable electronic device
Electric power supplying apparatus using unstable electric power supply and control method therefor
Laboratory reactor apparatus
Motor ignition system control circuit for maintaining energy storage in spark coil constant in wide speed range
Process for operating at least one receiver of radio signals, placed in the vicinity of a radiating facility or apparatus