Lin He

US Patent:

7952502, May 31, 2011

Filed:

Nov 18, 2010

Appl. No.:

12/949752

Inventors:

Thomas J. Kolze - Phoenix AZ, US
Bruce J. Currivan - Dove Canyon CA, US
Ramon Gomez - San Juan Capistrano CA, US
Loke Tan - Newport Coast CA, US
Lin He - Irvine CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H03M 1/06

US Classification:

341118, 341119, 341120, 341139, 341155, 341159

Abstract:

Imbalance and distortion cancellation for composite analog to digital converter (ADC). Such an ‘ADC’ is implemented using two or more ADCs may be employed for sampling (e. g. , quantizing, digitizing, etc. ) of an analog (e. g. , continuous time) signal in accordance with generating a digital (e. g. , discrete time) signal. Using at least two ADCs allows for the accommodation and sampling of various signals having a much broader dynamic range without suffering degradation in signal to noise ratio (SNR). Generally, the signal provided via at least one of the paths corresponding to at least one of the respective ADCs is scaled (e. g. , attenuated), so that the various ADCs effectively sample signals of different magnitudes. The ADCs may respectively correspond to different magnitude and/or power levels (e. g. , high power, lower power, any intermediary power level, etc. ).

US Patent:

20110227768, Sep 22, 2011

Filed:

May 29, 2011

Appl. No.:

13/118429

Inventors:

Thomas J. Kolze - Phoenix AZ, US
Bruce J. Currivan - Dove Canyon CA, US
Ramon Gomez - San Juan Capistrano CA, US
Loke Tan - Newport Coast CA, US
Lin He - Irvine CA, US

Assignee:

BROADCOM CORPORATION - IRVINE CA

International Classification:

H03M 1/06

US Classification:

341118

Abstract:

Imbalance and distortion cancellation for composite analog to digital converter (ADC). Such an ‘ADC’ is implemented using two or more ADCs may be employed for sampling (e.g., quantizing, digitizing, etc.) of an analog (e.g., continuous time) signal in accordance with generating a digital (e.g., discrete time) signal. Using at least two ADCs allows for the accommodation and sampling of various signals having a much broader dynamic range without suffering degradation in signal to noise ratio (SNR). Generally, the signal provided via at least one of the paths corresponding to at least one of the respective ADCs is scaled (e.g., attenuated), so that the various ADCs effectively sample signals of different magnitudes. The ADCs may respectively correspond to different magnitude and/or power levels (e.g., high power, lower power, any intermediary power level, etc.). Various implementations of compensation may be performed along the various paths corresponding to the respective ADCs.