Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Wireless telecommunications multi-carrier receiver architecture










Image Number 12 for United States Patent #6813320.

A receiver (10) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received signals can be simultaneously processed. The receiver (10) includes a specialized LNA (16), frequency down-converter (18) and ADC (20) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter (18) employs a suitable mixer (28), BPA (32), attenuator (34), and transformer (36) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband. The down-converter devices are selected depending on the particular performance criteria of the ADC (20). A specialized digital channelizer (22) is included in the receiver (10) that receives the digital signal from the ADC (20), and separates the signals into the multiple channels. In one embodiment, the frequency down-conversion is performed in a single down-conversion process, and the ADC (20) employs delta-sigma processing to provide digital conversion over the complete frequency band. In an alternate embodiment, the frequency down-conversion is performed in a double down-conversion process so that a less complex ADC (62) can be used.








 
 
  Recently Added Patents
Method and apparatus for communication channel error rate estimation
System and method for reducing the risks involved in trading multiple spread trading strategies
Fluid discrimination device
Sensing during magnetic resonance imaging
Method for processing power headroom and terminal thereof
Position and orientation measurement apparatus, position and orientation measurement method, and storage medium
Network fault detection
  Randomly Featured Patents
Resistor string digital to analog converter with differential outputs and reduced switch count
Operator control interface mounting mechanism
Method and apparatus for preventing the no-load operation of a pump for a liquid supply system
Frequency generator for a motor controller
DC Motor control circuit for drop-out of stopping pulses in recorder
Structure to improve adhesion between top CVD low-K dielectric and dielectric capping layer
Clothes washing machine with improved filter assembly
Compositions for conferring tolerance to viral disease in social insects, and the use thereof
Multilevel connector system
Filter pump