Northrop Grumman Systems Corporation

Shimen K Claxton

Mark Kintis

Craig R Talbott

Andrew Donovan Smith

Vincent C Moretti

Donald R Martin

William Marvin Skones

Bert K Oyama

Barry Ross Allen

Ronald P Smith

David Joseph Brunone

Eric L Upton

A receiver ( ) 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 ( ) includes a specialized LNA ( ), frequency down-converter ( ) and ADC ( ) to perform the wideband signal processing while maintaining receiver performance. The frequency down-converter ( ) employs a suitable mixer ( ), BPA ( ), attenuator ( ), and transformer ( ) 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 ( ). A specialized digital channelizer ( ) is included in the receiver ( ) that receives the digital signal from the ADC ( ), 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 ( ) 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 ( ) can be used.

Wireless telecommunications multi-carrier receiver architecture

Receiver including frequency down-converter and analog-to-digital converter for a wireless telecommunication system

A receiver ( ) 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 ( ) includes a specialized LNA ( ), frequency down-converter ( ) and ADC ( ) to perform the wideband signal processing while maintaining receiver performance. A specialized digital channelizer ( ) is included in the receiver ( ) that receives the digital signal from the ADC ( ), 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 ( ) employs delta-sigma processing to provide digital conversion over the complete frequency band.

Multi-carrier receiver including an analog-to-digital converter for a wireless telecommunication system

Architecture for multi-carrier receiver

A frequency down-converter ( ) for a receiver ( ) in a wireless telecommunications system. The down-converter ( ) is capable of simultaneously processing a plurality of signal channels without increased signal distortion over a relatively wide bandwidth. The frequency down-converter ( ) employs a suitable mixer ( ), bandpass filter ( ), attenuator ( ) and transformer ( ) that are tuned to provide the desired frequency down-conversion and amplitude control over the desired wideband width. In one embodiment, the bandpass filter passes a frequency band at 25 MHz or above. The frequency down-converter ( ) generates the IF signal in a single step down-conversion process, or generates the IF signal and then a baseband signal in a two step down-conversion process.

Multi-carrier receiver frequency conversion architecture

Receiver including low noise amplifier and frequency down-converter for a wireless telecommunication system

Multi-carrier receiver for a wireless telecommunication system

Growing community of inventors

Encino, CA, United States of America

Shimen K Claxton