公开(公告)号：CA2420687A1

公开(公告)日：2002-03-07

申请号：CA2420687

申请日：2001-08-17

Applicant: CONEXANT SYSTEMS INC

Inventor： DAMGAARD MORTEN ,  CLARK RICKE W ,  ROZENBLIT DMITRIY ,  DOMINO WILLIAM J

IPC: H03F3/24 ,  H03F1/02 ,  H03G3/30 ,  H04B1/04 ,  H04B7/005 ,  H03G3/10 ,  H03F3/66

Abstract: A system for a closed power control feedback loop (200) allows for the use o f a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulation (AM) sign al into the feedback loop using a variable gain element (Fig. 2, block 212). By introducing an inverse version of the desired (AM) portion of the signal int o the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the (PM) portion of the signal, while the (AM) portion is introduced by the power control feedback loop (200). In another aspect of the invention, an inverse version of the (AM) portion of t he desired transmit signal is introduced into the power control feedback loop o f an amplifier that is amplifying both a phase modulated signal and an amplitu de modulated signal. By introducing an inverse version of the desired (AM) sign al into the power control feedback loop, the power control feedback loop may no t cancel the (AM) component present at the output of the power amplifier. In y et another aspect of the invention, the desired (AM) signal is injected into th e feedback loop with the power control reference signal.

公开(公告)号：AU8504801A

公开(公告)日：2002-03-13

申请号：AU8504801

申请日：2001-08-17

Applicant: CONEXANT SYSTEMS INC

Inventor： DAMGAARD MORTEN ,  ROZENBLIT DMITRIY ,  DOMINO WILLIAM J ,  CLARK RICKE W

IPC: H03F3/24 ,  H03F1/02 ,  H03G3/30 ,  H04B1/04 ,  H04B7/005

Abstract: A system for a closed power control feedback loop allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulated (AM) signal into the feedback loop using a variable gain element. By introducing an inverse version of the desired AM portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the PM portion of the signal, while the AM portion is introduced by the power control feedback loop. In another aspect of the invention, an inverse version of the AM portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired AM signal into the power control feedback loop, the power control feedback loop may not cancel the AM component present at the output of the power amplifier. In yet another aspect of the invention, the desired AM signal is injected into the feedback loop along with the power control reference signal.

公开(公告)号：WO02080351A8

公开(公告)日：2003-01-09

申请号：PCT/US0209243

申请日：2002-03-25

Applicant: CONEXANT SYSTEMS INC

Inventor： DAMGAARD MORTEN ,  DOMINO WILLIAM J ,  MAGOON RAHUL ,  MOLNAR ALYOSHA C ,  ZACHAN JEFF

IPC: H03B1/00 ,  H03L5/00 ,  H03L7/087 ,  H03L7/099 ,  H03L7/113 ,  H03L7/187 ,  H04B1/40 ,  H03D3/24 ,  H03L7/00 ,  H03L7/06 ,  H04B1/06 ,  H04B1/18 ,  H04B1/26 ,  H04L25/49 ,  H04L27/06

CPC classification number: H03L7/099 ,  H03B2201/025 ,  H03B2201/0291 ,  H03J2200/10 ,  H03L5/00 ,  H03L7/087 ,  H03L7/113

Abstract: Systems for controlling the frequency of the output signal of a controllable oscillator (202) in a frequency synthesizer (200) are provided. One such system comprises a controllable oscillator (202) and a frequency control circuit (208). The controllable oscillator (202) is configured to generate an output signal that has a predefined frequency. The controllable oscillator (202) is also configured with a plurality of operational states that are controlled by the frequency control circuit (208). Each operational state of the controllable oscillator (202) defines a distinct frequency for the output signal of the controllable oscillator (202). The frequency control circuit (208) receives the output signal of the controllable oscillator (202) and determines the distinct frequency for the output signal that best approximates the predefined frequency. The frequency control circuit (208) may also provide a control signal to the controllable oscillator (202) that is configured to change the controllable oscillator (202) to the operational state corresponding to the distinct frequency that best approximates the predefined frequency.

Abstract translation: 提供了用于控制频率合成器（200）中的可控振荡器（202）的输出信号的频率的系统。 一个这样的系统包括可控振荡器（202）和频率控制电路（208）。 可控振荡器（202）被配置为产生具有预定频率的输出信号。 可控振荡器（202）还配置有由频率控制电路（208）控制的多个操作状态。 可控振荡器（202）的每个操作状态为可控振荡器（202）的输出信号定义不同的频率。 频率控制电路（208）接收可控振荡器（202）的输出信号，并确定最接近于预定频率的输出信号的不同频率。 频率控制电路（208）还可以向可控振荡器（202）提供控制信号，该控制信号被配置为将可控振荡器（202）改变到对应于最接近于预定频率的不同频率的操作状态。

公开(公告)号：WO0219545A8

公开(公告)日：2002-08-22

申请号：PCT/US0125846

申请日：2001-08-17

Applicant: CONEXANT SYSTEMS INC

Inventor： DAMGAARD MORTEN ,  ROZENBLIT DMITRIY ,  DOMINO WILLIAM J ,  CLARK RICKE W

IPC: H03F3/24 ,  H03F1/02 ,  H03G3/30 ,  H04B1/04 ,  H04B7/005 ,  H03F3/66 ,  H03G3/10

CPC classification number: H03G3/3042 ,  H03F1/02 ,  H03F2200/294 ,  H03F2200/372 ,  H04W52/52

Abstract: A system for a closed power control feedback loop (200) allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulation (AM) signal into the feedback loop using a variable gain element (Fig. 2, block 212). By introducing an inverse version of the desired (AM) portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the (PM) portion of the signal, while the (AM) portion is introduced by the power control feedback loop (200). In another aspect of the invention, an inverse version of the (AM) portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired (AM) signal into the power control feedback loop, the power control feedback loop may not cancel the (AM) component present at the output of the power amplifier. In yet another aspect of the invention, the desired (AM) signal is injected into the feedback loop with the power control reference signal.

Abstract translation: 用于闭合功率控制反馈回路（200）的系统允许使用非线性放大器来放大相位调制（PM）信号，同时将期望幅度调制（AM）信号的反相形式引入到反馈回路中，使用 一个可变增益元件（图2，框212）。 通过将所需信号（AM）的反相形式引入到功率控制反馈回路中，非线性且高效率的功率放大器可用于仅放大信号的（PM）部分，而 （AM）部分由功率控制反馈回路（200）引入。 在本发明的另一方面，期望发射信号的（AM）部分的反相形式被引入放大器的功率控制反馈回路中，该放大器同时放大相位调制信号和幅度调制信号。 通过将所需（AM）信号的反相版本引入到功率控制反馈回路中，功率控制反馈回路可以不消除存在于功率放大器输出处的（AM）分量。 在本发明的又一个方面，期望的（AM）信号以功率控制参考信号被注入到反馈回路中。

公开(公告)号：WO0052840A8

公开(公告)日：2001-05-25

申请号：PCT/US0005379

申请日：2000-03-02

Applicant: CONEXANT SYSTEMS INC

Inventor： ROZENBLIT DMITRIY ,  DOMINO WILLIAM J ,  DAMGAARD MORTEN ,  OSKOWSKY MARK

IPC: H03D3/00 ,  H03D7/14 ,  H04B1/30 ,  H04B1/40

CPC classification number: H04B1/406 ,  H03D3/006 ,  H03D7/1408 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/165 ,  H03D2200/009 ,  H04B1/30

Abstract: A multi-band transceiver having a receiver portion and a transmitter portion, wherein the receiver portion includes a direction conversion system for directly downconverting a signal to baseband frequencies. The direct conversion receiver system includes a frequency translator having first and second inputs and an output. The first frequency is preferably an nth order subharmonic of the second frequency, wherein n is an integer greater than 1. A low pass filter is integral with or inherent to the first input and a high pass filter is integral with or inherent to the second input. A direct conversion receiver system is also provided in which a first input signal at a first frequency is applied to a first input port of a multiplier, and a second input signal at a second frequency equal to about 1/n times the first frequency wherein n is an integer, is applied to a second input port of the multiplier. A first filter coupled to the first input port is configured to substantially filter out any leakage at the second frequency which may be present. A second filter is configured to substantially filter out any leakage at the first frequency which may be present. The multiplier is configured to produce a signal at an output port thereof which is derived from the product of the first and second signals.

Abstract translation: 一种具有接收机部分和发射机部分的多频带收发机，其中所述接收机部分包括用于将信号直接下变频到基带频率的方向转换系统。 直接转换接收机系统包括具有第一和第二输入和输出的频率转换器。 第一频率优选地是第二频率的第n次次谐波，其中n是大于1的整数。低通滤波器与第一输入一体或固有，并且高通滤波器与第二输入集成或固有 。 还提供了一种直接转换接收机系统，其中以第一频率的第一输入信号被施加到乘法器的第一输入端口，第二输入信号以等于第一频率的大约1 / n倍的第二输入信号，其中n 是一个整数，被应用到乘法器的第二个输入端口。 耦合到第一输入端口的第一滤波器被配置为基本上滤除可能存在的第二频率处的任何泄漏。 第二滤波器被配置为基本上滤除可能存在的第一频率处的任何泄漏。 乘法器被配置为在其输出端口处产生从第一和第二信号的乘积导出的信号。

公开(公告)号：WO0219545A2

公开(公告)日：2002-03-07

申请号：PCT/US0125846

申请日：2001-08-17

Applicant: CONEXANT SYSTEMS INC

Inventor： DAMGAARD MORTEN ,  ROZENBLIT DMITRIY ,  DOMINO WILLIAM J ,  CLARK RICKE W

IPC: H03F3/24 ,  H03F1/02 ,  H03G3/30 ,  H04B1/04 ,  H04B7/005 ,  H04B

CPC classification number: H03G3/3042 ,  H03F1/02 ,  H03F2200/294 ,  H03F2200/372 ,  H04W52/52

Abstract: A system for a closed power control feedback loop (200) allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulation (AM) signal into the feedback loop using a variable gain element (Fig. 2, block 212). By introducing an inverse version of the desired (AM) portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the (PM) portion of the signal, while the (AM) portion is introduced by the power control feedback loop (200). In another aspect of the invention, an inverse version of the (AM) portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired (AM) signal into the power control feedback loop, the power control feedback loop may not cancel the (AM) component present at the output of the power amplifier. In yet another aspect of the invention, the desired (AM) signal is injected into the feedback loop with the power control reference signal.

Abstract translation: 用于闭合功率控制反馈回路（200）的系统允许使用非线性放大器来放大相位调制（PM）信号，同时将期望的幅度调制（AM）信号的逆版本引入到反馈回路中，使用 可变增益元件（图2，框212）。 通过将信号的所需（AM）部分的逆版本引入功率控制反馈回路中，可以使用非线性和高效的功率放大器来放大信号的（PM）部分，而 （AM）部分由功率控制反馈回路（200）引入。 在本发明的另一方面，所需发射信号的（AM）部分的逆版本被引入放大器的功率控制反馈环路中，该放大器正在放大相位调制信号和幅度调制信号。 通过将所需（AM）信号的逆版本引入功率控制反馈回路中，功率控制反馈环路可能不会消除存在于功率放大器输出端的（AM）分量。 在本发明的另一方面，用功率控制参考信号将期望的（AM）信号注入到反馈回路中。