公开(公告)号：BG61293B1

公开(公告)日：1997-04-30

申请号：BG9779093

申请日：1993-05-27

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20 ,  H03G7/08

Abstract: The device has a considerable dynamic range and isapplicable for operation both in frecuency modulation mode and inmultilateral coded access mode. It has improved fast action andaccuracy and guarantees linear adjustment of the amplification atcomparatively wide frequency range. The device contains anamplifier (18) for receiving controliing and input signals whichreact to any changes of the signal power and control theamplification of the input signal to a level corresponding to thecontrol signal where the respective output signal is produced. Ameasuring circuit (20) is connected to the amplifier (18) for thedetermination of the level of the amplified input signal by alogarithmic scale from which the respective linear proportionalmeasuring signal is received. The device also includes anintegrator (22), receiving the measuring and the standard signalwhich is proportional to the desired level of the output signal.The integrator (22) effects the integration depending on thedifference in time between the measuring and the standard signaland generates the control signal in accordance with the resultfrom it.

公开(公告)号：HUT66966A

公开(公告)日：1995-01-30

申请号：HU157693

申请日：1991-11-27

Applicant: QUALCOMM INC

Inventor： PUNCH DEREK N ,  WHEATLEY CHARLES E III

IPC: H03G3/30 ,  H03G3/20

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：AU652807B2

公开(公告)日：1994-09-08

申请号：AU1241692

申请日：1991-11-27

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：HU9301576D0

公开(公告)日：1993-11-29

申请号：HU157693

申请日：1991-11-27

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：NO931949A

公开(公告)日：1993-06-17

申请号：NO931949

申请日：1993-05-28

Applicant: QUALCOMM INC

Inventor： WHEATLEY III CHARLES E ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20

CPC classification number: H03G3/3042 ,  H03G3/3078

公开(公告)号：FI932238A

公开(公告)日：1993-05-17

申请号：FI932238

申请日：1993-05-17

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20 ,  H03G

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：NO306840B1

公开(公告)日：1999-12-27

申请号：NO931949

申请日：1993-05-28

Applicant: QUALCOMM INC

Inventor： WHEATLEY III CHARLES E ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：GR3030105T3

公开(公告)日：1999-07-30

申请号：GR990401187

申请日：1999-04-30

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：ES2129445T3

公开(公告)日：1999-06-16

申请号：ES92904567

申请日：1991-11-27

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PUNCH DEREK N

IPC: H03G3/30 ,  H03G3/20 ,  H03G7/00

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.

公开(公告)号：HU214918B

公开(公告)日：1998-07-28

申请号：HU157693

申请日：1991-11-27

Applicant: QUALCOMM INC

Inventor： PUNCH DEREK N ,  WHEATLEY CHARLES E III

IPC: H03G3/30 ,  H03G3/20 ,  H01M6/52 ,  B09B3/00

Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.