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公开(公告)号：AU2001243384B2
公开(公告)日：2006-09-14
申请号：AU2001243384
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： LIN JIAN , WILBORN THOMAS , SIMIC EMILIJA , FILIPOVIC DANIEL , ZHANG HAITAO , YOUNIS SAED , 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：DE69735807D1
公开(公告)日：2006-06-08
申请号：DE69735807
申请日：1997-07-31
Applicant: QUALCOMM INC
Inventor： FILIPOVIC DANIEL
Abstract: A bent-segment helical antenna utilizes one or more radiators wrapped in a helical fashion. The radiators are comprised of a plurality of segments. A first segment extends from a feed network at a first end of a radiator portion of the antenna toward a second end of the radiator portion. A second segment is adjacent to and offset from the first segment. A third segment connects the first and second segments at the second end of the radiator portion.
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公开(公告)号：BR0108969A
公开(公告)日：2006-05-09
申请号：BR0108969
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN JIAN
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：BR0313835A
公开(公告)日：2005-08-02
申请号：BR0313835
申请日：2003-08-28
Applicant: QUALCOMM INC
Inventor： SCHLEGEL NIKOLAI , HOLENSTEIN CHRISTIAN , FILIPOVIC DANIEL , KASTURI NITIN
Abstract: An apparatus for coarse compensation of a direct current (DC) offset in a direct to baseband receiver architecture utilizes a serial analog to digital converter (ADC), such as a Delta-Sigma converter, to convert the received signal to digital form. The output of the ADC is sampled for a predetermined number of samples and a counter coupled to the ADC is incremented each time the sample generated by the ADC is a logic one. The counter is not incremented if the sample from the ADC is a logic zero. After the predetermined number of samples is obtained, the counter value is indicative of the DC offset in the received signal. The counter value may be converted by a code converter to a correction value for easy operation of a digital to analog converter (DAC). If the number of samples from the ADC is a power of two, the code converted may be readily implemented by simply inverting the most significant bit (MSB) from the counter to thereby generate a twos complement version of the counter value. The correction value is coupled to the DAC to generate a compensation signal, which is provided to the received signal path in the form of a feedback signal to compensate for the DC offset.
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公开(公告)号：HK1060404A1
公开(公告)日：2004-08-06
申请号：HK04103282
申请日：2004-05-11
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN JIAN
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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Patent Agency Ranking
公开(公告)号：BR9710634A
公开(公告)日：2001-11-20
申请号：BR9710634
申请日：1997-07-31
Applicant: QUALCOMM INC
Inventor： FILIPOVIC DANIEL
Abstract: A dual-band coupled-segment helical antenna provides operation in two frequency bands. The dual-band coupled-segment helical antenna includes a radiator portion having two sets of one or more helically wound radiators extending from one end of the radiator portion to the other end of the radiator portion. Radiators of the first set of radiators are comprised of two segments: a first radiator segment extends in a helical fashion from one end of the radiator portion toward the other end of the radiator portion; and a second radiator segment is U-shaped and extends in a helical fashion from the first end of the radiator portion toward the second end of the radiator portion. Radiators of the second set of radiators are comprised of a radiator disposed within said U-shaped segment. The first set of radiators resonates at a first frequency and the second set of radiators resonates at a second frequency thereby providing dual-band operation, with minimal coupling between the frequency bands.
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公开(公告)号：AU4338401A
公开(公告)日：2001-09-17
申请号：AU4338401
申请日：2001-03-02
Applicant: QUALCOMM INC
Inventor： YOUNIS SAED , SIMIC EMILIJA , WILBORN THOMAS , ZHANG HAITAO , FILIPOVIC DANIEL , KAUFMAN RALPH , LIN JIAN
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：CA2702881A1
公开(公告)日：2001-09-13
申请号：CA2702881
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：HK1027219A1
公开(公告)日：2001-01-05
申请号：HK00106144
申请日：2000-09-27
Applicant: QUALCOMM INC
Inventor： FILIPOVIC DANIEL , TASSOUDJI ALI , TIDWELL STEPHEN B
Abstract: A dual-band helical antenna provides operation in two frequency bands. The dual-band helical antenna includes two single-band antennas, each having a feed network, a ground plane opposite the feed network, and a set of one or more radiators extending from feed network. According to one aspect of the invention, a tab extends from the feed network of one of the antennas which provides a feed for that antenna. The tab also provides a path for current to flow from the radiators of the second antenna along the axis of the second antenna to thereby increase the energy radiated in the directions perpendicular to the axis. According to another feature of the invention, the ground plane of one antenna is used as a shorting ring for the other antenna.
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公开(公告)号：HK1026306A1
公开(公告)日：2000-12-08
申请号：HK00104271
申请日：2000-07-11
Applicant: QUALCOMM INC
Inventor： FILIPOVIC DANIEL , TASSOUDJI ALI
Abstract: A method of manufacturing a helical antenna having a substrate (406), the method comprising providing a series of holes (2230) in the substrate (406) and positioning the substrate (406) to engage a support element (2310). The support element (2310) has a series of teeth (2312) adapted to mate with the holes and extending radially outward from an outer surface of the support element. The teeth are arranged so that on rotation of the support element (2310) about its major axis, the substrate (406) is wrapped around the support element (2310). In preferred embodiments, the teeth (2312) and holes (2230) are arranged such that prior to rotation of the support element (2310), at least one of the teeth (2312) mates with a corresponding at least one of the holes (2230) and upon rotation, at least one additional tooth (2312) mates with a corresponding at least one additional hole (2230).
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