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
Touchscreen with Z-velocity enhancement
Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display
Semiconductor device with an amorphous semi-insulating layer, temperature sensor, and method of manufacturing a semiconductor device
Process and intermediates for preparing lapatinib
Therapeutic compositions and methods
Fast port switching in an audiovisual receiver by use of port pre-authentication by a partial PHY decoder core
Push mechanism for efficiently sending aggregated data items to client
  Randomly Featured Patents
Data processor with trie traversal instruction set extension
Urea derivatives useful as platelet aggregation inhibitors
Compositions and methods to treat hypertension comprising a pyridazine and N-amidino-2-(2,6-dichlorophenyl) acetamide
Resonator for electron spin resonance spectroscopy
Method for reproducing digital information and digital information recording or reproducing device
Cryptographically secure electric fuel pump system
Beam generation and steering with integrated optical circuits for light detection and ranging
Focus detecting apparatus
Viscose rayon filment yarn and process for producing same
Storage locker in particular for sports facilities, set of lockers, row of lockers and changing-room equipped with such lockers