Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Quadrature signal conversion device










Image Number 4 for United States Patent #5764171.

A receiver including two sigma delta modulators used to convert a pair of analog quadrature signals into digital quadrature signals. In such sigma delta modulators the quantization noise is shifted into a frequency region in which no signal is present. A cross coupling between the filters is provided to improve the noise reduction without increasing the order of the filters. By providing the cross coupling, it is possible to obtain complex poles and zeros in the noise transfer function which do not have to appear in complex conjugate pairs which results in an increase of the noise suppression in a specified frequency range.








 
 
  Recently Added Patents
Semiconductor device
Systems and methods for cryopreservation of cells
Methods and systems for managing print device supplies using cloud administration system configured for chemical signature tracking
Aperture stop
Method and structure for adding mass with stress isolation to MEMS structures
Compositions and methods for concentrating and depleting microorganisms
Configuration method and system of complex network and configuration and management module of server resources
  Randomly Featured Patents
Method and apparatus for manufacturing known good semiconductor die
Signal demodulation method and apparatus
System for conveying odd-shaped containers
Field-effect transistor, semiconductor device, a method for manufacturing them, and a method of semiconductor crystal growth
Skin marking method
System and method for assigning sequence keys to a media player to enable hybrid traitor tracing
Power supply for totem pole power switches
Apparatus for camouflaging specular reflecting cover surfaces
Arm of stand
Automatic and dynamic information handling system personalization