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公开(公告)号：CA2739521A1
公开(公告)日：2001-09-13
申请号：CA2739521
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN MING JASON YU
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：CA2739554C
公开(公告)日：2014-07-08
申请号：CA2739554
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN MING JASON YU
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：CA2621522C
公开(公告)日：2012-07-10
申请号：CA2621522
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , LIN MING JASON YU , KAUFMAN RALPH
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：CA2621145C
公开(公告)日：2012-07-10
申请号：CA2621145
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN MING JASON YU
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：AT408930T
公开(公告)日：2008-10-15
申请号：AT01933239
申请日：2001-05-08
Applicant: QUALCOMM INC
Inventor： PATRICK CHRISTOPHER , YOUNIS SAED
Abstract: The frequency error of an oscillator is minimized by characterizing the operating environment of the oscillator. An electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal frequency source. Temperature is one parameter known to have an effect on the frequency of the internal frequency source and a primary contributor to device temperature is the RF Power Amplifier (PA). The electronic device collects and stores the activity level of the PA. The effective PA duty cycle over a predetermined period of time is calculated. The LO operating environment is stabilized by operating the PA at the calculated duty cycle when the LO is required to operate in a high stability mode.
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Patent Agency Ranking
公开(公告)号：HK1081737A1
公开(公告)日：2006-05-19
申请号：HK06101964
申请日：2004-05-11
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN MING YU
IPC: H04B1/04 , H03G20060101 , H03G3/20 , H03G3/30 , H04B20060101 , H04B7/005 , H04B7/24
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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公开(公告)号：BR0208092A
公开(公告)日：2004-05-04
申请号：BR0208092
申请日：2002-03-15
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED
Abstract: A system and method for providing timing information to a wireless device in a position determination system is disclosed. A wireless device includes a reference signal receiver, a signal processor, a wireless communications transceiver and a GPS receiver. The wireless device is adapted to receive a reference signal, extract a snippet of the received reference signal, determine a time of reception for the snippet and transmit the snippet and time of reception to a position determination entity as part of a request for GPS aiding information. The position determination entity includes a timing source, a GPS memory for storing GPS satellite information, a reference signal memory, a communications interface, a signal processor and a control processor. The position determination entity is adapted to continually receive and store a reference signal along with an associated time of reception, and receive the snippet and timestamp transmitted from the wireless device. The position determination entity is further adapted to match the signal snippet to a portion of the stored reference signal, determine a time offset between the timestamp and the time of reception of the matched portion of the stored reference signal, prepare aiding information for the wireless device, synchronize the aiding information to the wireless device using the time offset, and transmit the synchronized aiding information to the wireless device. The wireless device is further adapted to receive the aiding information, including timing information to assist the wireless device in acquiring the GPS signals.
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公开(公告)号：CA2440750A1
公开(公告)日：2002-09-26
申请号：CA2440750
申请日：2002-03-15
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED
Abstract: A system and method for providing timing information to a wireless device in a position determination system is disclosed. A wireless device includes a reference signal receiver, a signal processor, a wireless communications transceiver and a GPS receiver. The wireless device is adapted to receive a reference signal, extract a snippet of the received reference signal, determine a time o reception for he snippet and transmit the snippet and tim e of reception to a position determination entity as part of a request for GPS aiding information. The position determination entity includes a timing source, a GPS memory for storing GPS satellite information, a reference sign al memory, a communications interface, a signal processor and a control processor. The position determination entity is adapted to continually recei ve and store a reference signal along with an associated time of reception, and receive the snippet and timestamp transmitted from the wireless device. The position determination entity is further adapted to match the signal snippet to a portion of the stored reference signal, determine a time offset between the timestamp and the time of reception of the matched portion of the stored reference signal, prepare aiding information for the wireless device, synchronize the aiding information to the wireless device using the time offset, and transmit the synchronized aiding information to the wireless device. The wireless device is further adapted to receive the aiding information, including timing information to assist the wireless device in acquiring the GPS signal.
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公开(公告)号：AU4001501A
公开(公告)日：2001-09-17
申请号：AU4001501
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS
Abstract: An interface circuit for converting a digital signal to an analog signal. The interface circuit includes a time response adjustment circuit, a modulator, and a filter. The time response adjustment circuit receives the digital signal and generates an adjusted signal. The modulator couples to the time response adjustment circuit, receives the adjusted signal, and generates a modulator signal. The filter couples to the modulator, receives the modulator signal, and generates the analog signal. The analog signal has a time response that is modified by the time response adjustment circuit. In an embodiment, the time response adjustment circuit includes a gain element, a delay element, and a summer. The gain element receives and scales the digital signal by a scaling factor. The delay element receives and delays the digital signal by a time delay. The summer couples to the gain element and the delay element, sums the scaled signal from the gain element and the delayed signal from the delay element to generate the adjusted signal.
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公开(公告)号：CA2621522A1
公开(公告)日：2001-09-13
申请号：CA2621522
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： KAUFMAN RALPH , ZHANG HAITAO , WILBORN THOMAS , YOUNIS SAED , SIMIC EMILIJA , LIN MING JASON YU , FILIPOVIC DANIEL
Abstract: Transmitter architectures for a communications system having improved performance over conventional transmitter architectures. The improvements include a combination of the following: faster response time for the control signals, improved linearity, reduced interference, reduced power consumption, lower circuit complexity, and lower costs. For a cellular application, these improvements can lead to increased system capacity, smaller telephone size, increased talk and standby times, and greater acceptance of the product. Circuitry is provided to speed up the response time of a control signal. The control loop for various elements in the transmit signal path are integrated. A gain control mechanism allows for accurate adjustment of the output transmit power level. Control mechanisms are provided to power down the power amplifier, or th e entire transmit signal path, when not needed. The gains of the various elements in the transmit signal path are controlled to reduce transients in the output transmit power, and to also ensure that transients are downward.
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