公开(公告)号：AU1717899A

公开(公告)日：1999-06-28

申请号：AU1717899

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26 ,  H04B1/16

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：BR9813414A

公开(公告)日：2000-10-10

申请号：BR9813414

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26 ,  H04B1/16

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：DK1040587T3

公开(公告)日：2008-06-02

申请号：DK98962004

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： YOUNIS SAED G ,  BUTTERFIELD DANIEL K ,  BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C

IPC: H03M1/66 ,  H04B1/16 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：AU746148B2

公开(公告)日：2002-04-18

申请号：AU1717899

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26 ,  H04B1/16

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：CA2313139C

公开(公告)日：2009-12-15

申请号：CA2313139

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： YOUNIS SAED G ,  BUTTERFIELD DANIEL K ,  BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C

IPC: H03M1/66 ,  H04B1/16 ,  H03D3/00 ,  H03D7/16 ,  H03M1/12 ,  H03M3/02 ,  H04B1/26

Abstract: A receiver comprising a sigma-delta analog-to-digital converter (.SIGMA..DELTA. ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling .SIGMA..DELTA. receivers, the sampling frequency i s less than twice the center frequency of the input signal into the .SIGMA..DELTA. ADC. For Nyquist sampling .SIGMA..DELTA. receivers, the sampling frequency i s at least twice the highest frequency of the input signal into the .SIGMA..DELTA. ADC. For baseband .SIGMA..DELTA. receivers, the center frequency of the outp ut signal from the .SIGMA..DELTA. ADC is approximately zero or DC. For bandpass .SIGMA..DELTA. receivers, the center frequency of the output signal from the .SIGMA..DELTA. ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the .SIGMA..DELTA. ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The .SIGMA..DELTA. ADC within the receiver provides many benefits.

公开(公告)号：DE69839192D1

公开(公告)日：2008-04-10

申请号：DE69839192

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H04B1/16 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：CA2313139A1

公开(公告)日：1999-06-17

申请号：CA2313139

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26 ,  H04B1/16

Abstract: A receiver comprising a sigma-delta analog-to-digital converter(.SIGMA..DELTA. ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling .SIGMA..DELTA. receivers, the sampling frequency is less than twice the center frequency of the input signal into the .SIGMA..DELTA. ADC. For Nyquist sampling .SIGMA..DELTA. receivers, the sampling frequency is at least twice the highest frequency of the input signal into the .SIGMA..DELTA. ADC. For baseband .SIGMA..DELTA. receivers, the center frequency of the output signal from the .SIGMA..DELTA. ADC is approximately zero or DC. For bandpass .SIGMA..DELTA. receivers, the center frequency of the output signal from the .SIGMA..DELTA. ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the .SIGMA..DELTA. ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The .SIGMA..DELTA. ADC within the receiver provides many benefits.

公开(公告)号：DE69839192T2

公开(公告)日：2009-02-26

申请号：DE69839192

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H04B1/16 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26

Abstract: A receiver comprising a sigma-delta analog-to-digital converter ( SIGMA DELTA ADC) can be utilized in one of four configurations, as a subsampling bandpass receiver, a subsampling baseband receiver, a Nyquist sampling bandpass receiver, or a Nyquist sampling baseband receiver. For subsampling SIGMA DELTA receivers, the sampling frequency is less than twice the center frequency of the input signal into the SIGMA DELTA ADC. For Nyquist sampling SIGMA DELTA receivers, the sampling frequency is at least twice the highest frequency of the input signal into the SIGMA DELTA ADC. For baseband SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is approximately zero or DC. For bandpass SIGMA DELTA receivers, the center frequency of the output signal from the SIGMA DELTA ADC is greater than zero. The sampling frequency can be selected based on the bandwidth of the input signal to simplify the design of the digital circuits used to process the output samples from the SIGMA DELTA ADC. Furthermore, the center frequency of the input signal can be selected based on the sampling frequency and the bandwidth of the input signal. The SIGMA DELTA ADC within the receiver provides many benefits.

公开(公告)号：ES2301217T3

公开(公告)日：2008-06-16

申请号：ES98962004

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H04B1/16 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26

Abstract: Un receptor (2300) para desmodular una señal de RF que comprende: una unidad de entrada (2302) para recibir dicha señal y rebajar la frecuencia de dicha señal de RF hasta una señal intermedia (IF), teniendo dicha señal IF una frecuencia central y una anchura de banda de dos lados; al menos un ADC SigmaDelta (2340) para recibir una señal procedente de dicha unidad de entrada (2302) y muestrear dicha señal para producir unas muestras, estando dicho ADCs SigmaDelta (2340) sincronizado en una frecuencia de muestreo; un procesador de señal digital (2350) conectado a dicho ADC SigmaDelta (2340) para recibir dichas muestras y desmodular dichas muestras de acuerdo con un formato de desmodulación utilizado para producir dicha señal de RF; en el que dicho ADC SigmaDelta (2340) comprende múltiples bucles, y cada bucle puede ser activado o desactivado dependiendo de una exigencia específica.

公开(公告)号：MY114831A

公开(公告)日：2003-01-31

申请号：MYPI9805485

申请日：1998-12-03

Applicant: QUALCOMM INC

Inventor： BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C ,  YOUNIS SAED G ,  BUTTERFIELD DANIEL K

IPC: H03M1/66 ,  H03M3/00 ,  H03D3/00 ,  H03D7/16 ,  H03M3/02 ,  H04B1/26

Abstract: A RECEIVER(2200) COMPRISING A SIGMA-DELTA ANALOG-TO-DIGITAL CONVERTER (EA ADC) CAN BE UTILIZED IN ONE OF FOUR CONFIGURATION, AS A SUBSAMPLING BANDPASS RECEIVER, A SUBSAMPLING BASEBAND RECEIVER, A NYQUIST SAMPLING BANDPASS RECEIVER, OR A NYQUIST SAMPLING BASEBAND RECEIVER. FOR SUBSAMPLING EA RECEIVERS, THE SAMPLING FREQUENCY IS LESS THAN TWICE THE CENTER FREQUENCY OF THE INPUT SIGNAL INTO THE EA ADC. FOR NYQUIST SAMPLING EA RECEIVERS, THE SAMPLING FREQUENCY IS AT LEAST TWICE THE HIGHEST FREQUENCY OF THE INPUT SIGNAL INTO THE EA ADC. FOR BASEBAND AE RECEIVERS, THE CENTER FREQUENCY OF THE OUTPUT SIGNAL FROM THE EA ADC IS GREATER THAN ZERO. THE SAMPLING FREQUENCY CAN BE SELECTED BASED ON THE BANDWIDTH OF THE INPUT SIGNAL TO SIMPLIFY THE DESIGN OF THE DIGITAL CIRCUITS USED TO PROCESS THE OUTPUT SAMPLES FROM THE EA ADC. FURTHERMORE, THE CENTER FREQUINCY OF THE INPUT SIGNAL CAN BE SELECTED BASED ON THE SAMPLING FREQUINCY AND THE BANDWIDTH OF THE INPUT SIGNAL. THE EA ADC WITHIN THE RECEIVER PROVIDES MANY BENEFITS.FIG 2