Resources Contact Us Home
Surface acoustic wave device, module device, oscillation circuit, and method for manufacturing surface acoustic wave device

Image Number 13 for United States Patent #8018122.

An SH wave type surface acoustic wave device includes a piezoelectric substrate and an IDT electrode provided on the piezoelectric substrate and constituted of Al or an alloy mainly containing Al and that uses a SH wave as an excitation wave. The piezoelectric substrate is a crystal plate in which a cut angle .theta. of a rotary Y cut quartz substrate is set in a range of<.theta.< in a counter-clockwise direction from a crystal axis Z and in which a surface acoustic wave propagation direction is set at with respect to a crystal axis X. An electrode film thickness H/.lamda. standardized by a wavelength of the IDT electrode is 0.04<H/.lamda.<0.12, where .lamda. is a wavelength of the surface acoustic wave to be excited, and a main surface of the piezoelectric substrate is etched by a thickness of 0.002 .mu.m or more.

  Recently Added Patents
Method for producing a flexible composite elastomeric polyurethane skin
Manufacturing method power semiconductor device
Session transfer method, application server, and communications system
Treatment of diabetes with milk protein hydrolysate
High throughput thin film characterization and defect detection
Data converter with configurable functions
Can seam inspection
  Randomly Featured Patents
Cupholder attachment for a seat bracket
Virus protein antigens of the JC virus
Head for keys
Drill stem test tools
Method and apparatus for producing a screen-printing stencil
Pyrrole-type compounds, compositions, and methods for treating cancer or viral diseases
Thermal imaging of fat and muscle using a simultaneous phase and magnitude double echo sequence
Memory device with sector pointer structure
Method and apparatus to perform an application software migration
Method for attenuating free radical formation resulting from a bodily insult