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公开(公告)号：HK1035080A1
公开(公告)日：2001-11-09
申请号：HK01105741
申请日：2001-08-15
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , KAUFMAN RALPH E , PETERZELL PAUL E
IPC: H03F1/02 , H03F1/26 , H03F1/34 , H03F1/32 , H03G1/00 , H03G3/18 , H03G3/20 , H04B1/10 , H04B1/16 , H03F , H03G
Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.
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公开(公告)号：BR9813481A
公开(公告)日：2001-10-23
申请号：BR9813481
申请日：1998-12-08
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , YOUNIS SAED G , KAUFMAN RALPH E
Abstract: A programmable linear receiver which provides the requisite level of system performance at reduced power consumption. The receiver minimizes power consumption based on measurement of the non-linearity in the output signal from the receiver. The amount of non-linearity can be measured by the RSSI slope or energy-per-chip-to-noise-ratio (Ec/Io) measurement. The RSSI slope is the ratio of the change in the output signal plus intermodulation to the change in the input signal. The input signal level is periodically increased by a predetermined level and the output signal from the receiver is measured. The output signal comprises the desired signal and intermodulation products from non-linearity within the receiver. When the receiver is operating linearly, the output signal level increases dB per dB with the input signal level. However, as the receiver transitions into non-linear region, intermodulation products due to non-linearity increase faster than the desired signal. By detecting the RSSI slope, the amount of degradation due to non-linearity can be determined. This information is then used to adjust the IIP3 operating point of the amplifiers and mixer to provide the requisite level of performance while minimizing power consumption.
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公开(公告)号：NO20002931D0
公开(公告)日：2000-06-08
申请号：NO20002931
申请日：2000-06-08
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , YOUNIS SAED G , KAUFMAN RALPH E
Abstract: A programmable linear receiver which provides the requisite level of system performance at reduced power consumption. The receiver minimizes power consumption based on measurement of the non-linearity in the output signal from the receiver. The amount of non-linearity can be measured by the RSSI slope or energy-per-chip-to-noise-ratio (Ec/Io) measurement. The RSSI slope is the ratio of the change in the output signal plus intermodulation to the change in the input signal. The input signal level is periodically increased by a predetermined level and the output signal from the receiver is measured. The output signal comprises the desired signal and intermodulation products from non-linearity within the receiver. When the receiver is operating linearly, the output signal level increases dB per dB with the input signal level. However, as the receiver transitions into non-linear region, intermodulation products due to non-linearity increase faster than the desired signal. By detecting the RSSI slope, the amount of degradation due to non-linearity can be determined. This information is then used to adjust the IIP3 operating point of the amplifiers and mixer to provide the requisite level of performance while minimizing power consumption.
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公开(公告)号：ZA991713B
公开(公告)日：1999-11-24
申请号：ZA991713
申请日：1999-03-03
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN , PETERZELL PAUL E , KAUFMAN RALPH E
IPC: H03F1/02 , H03F1/26 , H03F1/32 , H03F1/34 , H03G1/00 , H03G3/18 , H03G3/20 , H04B1/10 , H04B1/16 , H03F , H03G
Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.
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公开(公告)号：AU2028299A
公开(公告)日：1999-07-26
申请号：AU2028299
申请日：1999-01-06
Applicant: QUALCOMM INC
Inventor： KAUFMAN RALPH E , APARIN VLADIMIR
Abstract: A quadrature modulator and demodulator which provide the requisite level of performance while minimizing power consumption. In the quadrature modulator, the I and Q signals are provided to two pairs of mixers. Each mixer in a pair of mixers modulates an I or Q signal with the respective inphase or quadrature IF sinusoid. The I and Q modulated signals from each pair of mixers are summed. The signals from the summers are provided to a third pair of mixer and modulated with the respective inphase and quadrature RF sinusoids. The signals from the third pair of mixers are summed and provided as the modulated signal. Using this quadrature modulator topology, the amplitude balance and phase error of the modulated signal are made insensitive to the amplitude imbalance and/or phase error of the quadrature splitters used to generate the IF and RF sinusoids. Furthermore, since the first two pairs of mixers and the two subsequent summers are operated at IF frequency, the performance requirements (e.g., bandwidth and linearity) of these components can be ensured while utilizing less power. The inventive concept can be further adopted for use in a quadrature demodulator.
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Patent Agency Ranking
公开(公告)号：AU1632999A
公开(公告)日：1999-06-28
申请号：AU1632999
申请日：1998-12-08
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , YOUNIS SAED G , KAUFMAN RALPH E
Abstract: A programmable linear receiver which provides the requisite level of system performance at reduced power consumption. The receiver minimizes power consumption based on measurement of the non-linearity in the output signal from the receiver. The amount of non-linearity can be measured by the RSSI slope or energy-per-chip-to-noise-ratio (Ec/Io) measurement. The RSSI slope is the ratio of the change in the output signal plus intermodulation to the change in the input signal. The input signal level is periodically increased by a predetermined level and the output signal from the receiver is measured. The output signal comprises the desired signal and intermodulation products from non-linearity within the receiver. When the receiver is operating linearly, the output signal level increases dB per dB with the input signal level. However, as the receiver transitions into non-linear region, intermodulation products due to non-linearity increase faster than the desired signal. By detecting the RSSI slope, the amount of degradation due to non-linearity can be determined. This information is then used to adjust the IIP3 operating point of the amplifiers and mixer to provide the requisite level of performance while minimizing power consumption.
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公开(公告)号：FI117365B
公开(公告)日：2006-09-15
申请号：FI20001942
申请日：2000-09-04
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , KAUFMAN RALPH E , PETERZELL PAUL E
IPC: H03F1/02 , H03F1/26 , H03F1/32 , H03F1/34 , H03G1/00 , H03G3/18 , H03G3/20 , H04B1/10 , H04B1/16
Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.
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公开(公告)号：AU760605B2
公开(公告)日：2003-05-15
申请号：AU2028299
申请日：1999-01-06
Applicant: QUALCOMM INC
Inventor： KAUFMAN RALPH E , APARIN VLADIMIR
Abstract: A quadrature modulator and demodulator which provide the requisite level of performance while minimizing power consumption. In the quadrature modulator, the I and Q signals are provided to two pairs of mixers. Each mixer in a pair of mixers modulates an I or Q signal with the respective inphase or quadrature IF sinusoid. The I and Q modulated signals from each pair of mixers are summed. The signals from the summers are provided to a third pair of mixer and modulated with the respective inphase and quadrature RF sinusoids. The signals from the third pair of mixers are summed and provided as the modulated signal. Using this quadrature modulator topology, the amplitude balance and phase error of the modulated signal are made insensitive to the amplitude imbalance and/or phase error of the quadrature splitters used to generate the IF and RF sinusoids. Furthermore, since the first two pairs of mixers and the two subsequent summers are operated at IF frequency, the performance requirements (e.g., bandwidth and linearity) of these components can be ensured while utilizing less power. The inventive concept can be further adopted for use in a quadrature demodulator.
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公开(公告)号：BR9908439A
公开(公告)日：2001-12-18
申请号：BR9908439
申请日：1999-03-04
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , KAUFMAN RALPH E , PETERZELL PAUL E
IPC: H03F1/32 , H03F1/02 , H03F1/26 , H03F1/34 , H03G1/00 , H03G3/18 , H03G3/20 , H04B1/10 , H04B1/16
Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.
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20.发明专利
公开(公告)号：HK1034617A1
公开(公告)日：2001-10-26
申请号：HK01105314
申请日：2001-07-31
Applicant: QUALCOMM INC
Inventor： CICCARELLI STEVEN C , YOUNIS SAED G , KAUFMAN RALPH E
Abstract: A programmable linear receiver which provides the requisite level of system performance at reduced power consumption. The receiver minimizes power consumption based on measurement of the non-linearity in the output signal from the receiver. The amount of non-linearity can be measured by the RSSI slope or energy-per-chip-to-noise-ratio (Ec/Io) measurement. The RSSI slope is the ratio of the change in the output signal plus intermodulation to the change in the input signal. The input signal level is periodically increased by a predetermined level and the output signal from the receiver is measured. The output signal comprises the desired signal and intermodulation products from non-linearity within the receiver. When the receiver is operating linearly, the output signal level increases dB per dB with the input signal level. However, as the receiver transitions into non-linear region, intermodulation products due to non-linearity increase faster than the desired signal. By detecting the RSSI slope, the amount of degradation due to non-linearity can be determined. This information is then used to adjust the IIP3 operating point of the amplifiers and mixer to provide the requisite level of performance while minimizing power consumption.
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