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公开(公告)号：DE60112857D1
公开(公告)日：2005-09-29
申请号：DE60112857
申请日：2001-03-05
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GHANADAN REZA , KONSTANTINOU KYRIAKI , PATEL MOHAN , TRIOLO ANTHONY A , ZIESSE NORMAN GERARD
Abstract: A power amplifier system (40) uses adaptive distribution of signals through an amplifier architecture of parallel amplifier stages (26 a-d). For example, the power amplifier system can adjust the operation of individual amplifier stages in the amplifier arrangement, for example to reduce power handling capability of the amplifier stages based on information of the signal to be amplified by the amplifier arrangement, such as the power level. To take advantage of the adjusted operation of the amplifier stages, the power amplifier system uses a variable power divider (48) to reapportion the input signal power among the amplifier stages and at least one variable combiner (50) to adaptively combine amplified signals from the amplifier stages in changing proportions. As such, the power amplifier system is reconfigurable and/or can adapt to changing conditions to provide improved performance and/or efficiency.
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公开(公告)号：AU775866B2
公开(公告)日：2004-08-19
申请号：AU7159500
申请日：2000-11-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GHANADAN REZA , KONSTANTINOU KYRIAKI , ZIESSE NORMAN GERARD
Abstract: A signal amplification system involves transforming at least one signal to be amplified into at least one transformed signal which is amplified and the resulting amplified transformed signal(s) can be used to produce a version(s) of the at least one original signal. The at least one transformed signal can be produced from the at least one original signal by using the at least one original signal to amplitude and/or angle (phase or frequency) modulate the at least one original signal. After amplification of the at least one transformed signal, the resulting at least one amplified transformed signal is de-modulated to produce a version(s) of the at least one signal. In transforming the at least one original signal to produce the at least one transformed signal, the at least one original signal is transformed into a more desirable form, such as a more power efficient form, for amplification. By amplifying the at least one transformed signal, more efficient and/or less costly amplifier(s) can be used to amplify the at least one signal in a linear fashion. Depending on the embodiment, at least one signal to be amplified can be transformed into at least one transformed signal by combining offset versions of the at least one original signal to produce the at least one transformed signal having the energy of the at least one signal spread in time and/or to produce the at least one transformed signal having a reduced peak to average power ratio(s)(PAR). Multiple signals to be amplified can be transformed into at least one transformed signal by combining the multiple signals, for example to produce the at least one transformed signal having a reduced peak to average power ratio(s) (PARs). After the at least one transformed signal is amplified, the resulting signal(s) can be de-modulated, inversely transformed, de-spread or reconstructed to recover a version(s) of the original signal(s).
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公开(公告)号：CA2325326C
公开(公告)日：2004-01-06
申请号：CA2325326
申请日：2000-11-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZIESSE NORMAN GERARD , GHANADAN REZA , KONSTANTINOU KYRIAKI
Abstract: A signal amplification system involves transforming at least one signal to be amplified into at least one transformed signal which is amplified and the resulting amplified transformed signal(s) can be used to produce a version(s) of the a t least one original signal. The at least one transformed signal can be produced from th e at least one original signal by using the at least one original signal to amplitude and/or angle (phase or frequency) modulate the at least one original signal. After amplification of the at least one transformed signal, the resulting at least one amplified transformed signal is de-modulated to produce a versions) of the at least one signal. In transforming the at least one original signal to produce the at least one transformed signal, the at least one original signal is transformed into a more desirabl e form, such as a more power efficient form, for amplification. By amplifying the at leas t one transformed signal, more efficient and/or less costly amplifiers) can be use d to amplify the at least one signal in a linear fashion. Depending on the embodiment, at least one signal to be amplified can be transformed into at least one transformed signal by combining offset versions of the at least one original signal to produce the at least one transformed signal having the energy of the at least one signal spread in time and/or to produce the at least one transformed signal having a reduced peak to average power ratio(s)(PAR). Multiple signals to be amplified can be transformed into at least one transformed signal by combining the multiple signals, for example to produce the at least one transformed signal having a reduced peak to average power ratios) (PARs). After the at least one transformed signal is amplified, the resulting signal(s) can be de-modulated, inversely transformed, de-spread or reconstructed to recover a version(s) of the original signal(s).
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公开(公告)号：CA2307712A1
公开(公告)日：2000-11-07
申请号：CA2307712
申请日：2000-05-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor： BENNING ROGER DAVID , AIKEN RICHARD THOMAS , ZIESSE NORMAN GERARD , SOLONDZ MAX AARON
Abstract: An antenna array system includes a first array for operating in a transmit mode and a receive mode and a second array spaced apart for operating in the receive mode. A receiver adjusts a receive radiation pattern in the receive mode and provides a control signal for a transmit radiation pattern of the transmit mode.
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公开(公告)号：AU5597899A
公开(公告)日：2000-05-04
申请号：AU5597899
申请日：1999-10-20
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZIESSE NORMAN GERARD
Abstract: A feedforward amplifier (40A) and an amplification method using the feedforward amplifier include an equalizer (48) positioned in series with a main amplifier (50) and/or a correction amplifier of the feedforward amplifier to compensate for a non-flat frequency response of the main amplifier and/or correction amplifier. The equalizer can be a voltage controllable equalizer adjustable under electronic controls to accommodate changing circuit conditions, or an equalizer with fixed parameters. These equalizers are selectively used according to the need and desired performance. The feedforward amplifier and the method separately perform the equalization function and the linearizing function of the feedforward amplifier to provide a cost effective and efficient feedforward amplifier and amplification method.
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Patent Agency Ranking
公开(公告)号：CA2281209A1
公开(公告)日：2000-04-30
申请号：CA2281209
申请日：1999-08-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ZIESSE NORMAN GERARD
Abstract: A feedfoward amplifier and an amplification method using the feedforward amplifier include an equalizer positioned in series with a main amplifier and/or a correction amplifier of the feedforward amplifier to compensate for a non-flat frequency response of the main amplifier and/or correction amplifier. The equalizer can be a voltage controllable equalizer adjustable under electronic controls to accommodate changing circuit conditions, or an equalizer with fixed parameters. These equalizers are selectively used according to the need and desired performance. The feedforward amplifier and the method separately perform the equalization function and the linearizing function of the feedforward amplifier to provide a cost effective and efficient feedforward amplifier and amplification method.
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公开(公告)号：DE69937932T2
公开(公告)日：2009-02-19
申请号：DE69937932
申请日：1999-08-23
Applicant: LUCENT TECHNOLOGIES INC
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公开(公告)号：CA2254456C
公开(公告)日：2001-08-14
申请号：CA2254456
申请日：1998-11-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： PATEL MOHAN , ZIESSE NORMAN GERARD , MYER ROBERT EVAN , MONTGOMERY ROBERT KEITH , DONALDSON JIMMIE L
IPC: H03F3/60 , H03F1/32 , H03F1/42 , H04Q7/22 , H04Q7/24 , H04Q7/26 , H04Q7/30 , H03F3/189 , H04N5/067 , H03F3/20 , H04B1/62
Abstract: A modularly-partitioned feedforward multicarrier linear RF power amplifier i s described. The circuitry and components of the power amplifier are segregated into physically-separate modules in accordance with several criteria. In one embodiment, the power amplifier is segregated into a RF power module, a linearizer module and a DC power supply module. The RF power module includes power- and frequency- dependent components and general ly varies with the carrier frequency and output power requirements for a specific application. The linearizer module includes circuitry and components that are substantially power- and frequency- independent. As such, the linearizer module is substantially invariant and a single design may be used for virtually any application. The DC power supply module includes circuit and components that are substantially frequency independent but somewhat power dependent. T he DC power supply module may vary from amplifier to amplifier where there is a significant change in output power requirements.
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公开(公告)号：BR0005432A
公开(公告)日：2001-07-03
申请号：BR0005432
申请日：2000-11-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GHANADAN REZA , ZIESSE NORMAN GERARD , KONSTANTINOU KYRIAKI
Abstract: A signal amplification system involves transforming at least one signal to be amplified into at least one transformed signal which is amplified and the resulting amplified transformed signal(s) can be used to produce a version(s) of the at least one original signal. The at least one transformed signal can be produced from the at least one original signal by using the at least one original signal to amplitude and/or angle (phase or frequency) modulate the at least one original signal. After amplification of the at least one transformed signal, the resulting at least one amplified transformed signal is de-modulated to produce a version(s) of the at least one signal. In transforming the at least one original signal to produce the at least one transformed signal, the at least one original signal is transformed into a more desirable form, such as a more power efficient form, for amplification. By amplifying the at least one transformed signal, more efficient and/or less costly amplifier(s) can be used to amplify the at least one signal in a linear fashion. Depending on the embodiment, at least one signal to be amplified can be transformed into at least one transformed signal by combining offset versions of the at least one original signal to produce the at least one transformed signal having the energy of the at least one signal spread in time and/or to produce the at least one transformed signal having a reduced peak to average power ratio(s)(PAR). Multiple signals to be amplified can be transformed into at least one transformed signal by combining the multiple signals, for example to produce the at least one transformed signal having a reduced peak to average power ratio(s) (PARs). After the at least one transformed signal is amplified, the resulting signal(s) can be de-modulated, inversely transformed, de-spread or reconstructed to recover a version(s) of the original signal(s).
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公开(公告)号：ID27123A
公开(公告)日：2001-03-01
申请号：ID20000072
申请日：2000-02-01
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DRABECK LAWRENCE MILTON , HAMPEL KARL GEORG , MANKIEWICH PAUL MATTHEW , POLAKOS PAUL ANTHONY , RAJKUMAR AJAY , TRIOLO ANTHONY A , ZIESSE NORMAN GERARD
Abstract: The wireless communication system includes antennas having electrically controllable downtilt angles and downtilt controllers associated with each antenna. The downtilt controllers receive instructions from a main controller, and adjust the downtilt angles of the associated antennas in accordance with the received instructions.
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