Resources Contact Us Home
Duplexer and elastic wave device

Image Number 3 for United States Patent #7924118.

In a duplexer, a transmission elastic wave filter and a reception elastic wave filter are mounted on a laminated substrate, a coil connected between an antenna terminal and a ground potential is provided on the laminated substrate, the reception elastic wave filter has first and second ground pads connected to ground potentials of IDTs connected to first and second balanced terminals, the distance between the second ground pad and the coil is greater than the distance between the first ground pad and the coil, and an inductance component in a conductive path E connecting the second ground pad to the second ground terminal is less than an inductance component in a conductive path D connecting the first ground pad to the first ground terminal, so as to improve isolation characteristics between first and second balanced terminals of a reception filter chip.

  Recently Added Patents
Particle measurement process and apparatus
Error recovery storage along a memory string
Concentration measuring apparatus for hydrogen sulfide in gas flow, and method for determining sulfide ion
Switchable solvents and methods of use thereof
Connector with shielding device and method for manufacturing connector
Image forming apparatus, information processing method, and storage medium for generating screen information
Mobile terminal based on W-CDMA system having receive diversity function and system thereof
  Randomly Featured Patents
Battery pack
Modular wall system
Organosulfur adducts as multifunctional additives for lubricating oils and fuels and as multifunctional lubricants
Disinfecting device utilizing ultraviolet radiation
Cartridge assembly
Plastic mirrors having enhanced thermal stability
Alginate foam compositions
Method for the detection of enzyme-catalyzed cleavage reactions by fluorescence spectroscopy
Network system, method and apparatus for processing information, and control program
Inducing insulin gene expression in pancreas cells expressing recombinant PDX-1