Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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 -64.0.degree.<.theta.<-49.3.degree. in a counter-clockwise direction from a crystal axis Z and in which a surface acoustic wave propagation direction is set at 90.degree..+-.5.degree. 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
Multi-layer, microporous polyolefin membrane, its production method, battery separator and battery
Debugging using code analysis
Techniques to manage communications resources for a multimedia conference event
Measurement and uses of oxidative status
Method of generating integrated circuit model
Method and system for automatic 3-D image creation
Plants and seeds of hybrid corn variety CH260114
  Randomly Featured Patents
High density connector and method of manufacture
Faraday system for ion implanters
Phenylacetyl-CoA ligase from penicillium chrysogenum
Method and device for estimating image quality of compressed images and/or video sequences
Deodorized compositions based on organothiophosphorus compounds
Model train control system
Clock spring
Vehicle wash apparatus using reclaimed water
X-ray collimator
Mascara applicator wand and receptacle