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
Lamp body with integrally molded heat sink
Profiling activity through video surveillance
Universal handle extension for unloading butterfly valve for tank trailer or other vehicle
Victim port-based design for test area overhead reduction in multiport latch-based memories
Stability control system with body-force-disturbance heading correction
Assisted hybrid mobile browser
Method and apparatus for eliminating a motor vehicle tip-over risk
  Randomly Featured Patents
File retention clip
Method for fabricating semiconductor device to lower source/drain sheet resistance
Method for context-preserving magnification of digital image regions
Apparatus for processing video data in AC type plasma display panel system
Display device having a diffusing display panel and a reflecting polarizer
Fungicidal 3-1,2,4-triazol-1-yl-1,2-diaryl-1-halogeno-prop-1-ene derivatives, compositions, and method of use
Process for treating phosphatic clay suspensions
1K mode interleaver in a digital video broadcasting (DVB) standard
Wireless communication device with duress password protection and related method
Polycarbonate resin composition