公开(公告)号：US07327198B2

公开(公告)日：2008-02-05

申请号：US10977872

申请日：2004-10-29

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03B21/02 ,  H04B1/26 ,  H04B1/28

CPC分类号： H04B15/06

摘要： Methods and systems for reducing interference in a signal are disclosed herein. Aspects of the method may comprise generating a first local oscillator signal. The generated first local oscillator signal may be phase-shifted to generate a second local oscillator signal and the second local oscillator signal may be phase-shifted to generate a third local oscillator signal. The first, second, and third local oscillator signals may be combined to generate a combined local oscillator signal, where a third harmonic and/or a fifth harmonic may be eliminated from the combined local oscillator signal. The generated second local oscillator signal may be multiplied by a factor of square root of two (√{square root over (2)}). The first and third local oscillator signals may be added to the multiplied second local oscillator signal. An input signal may be mixed with the generated combined local oscillator signal to generate a mixed output signal.

摘要翻译： 本文公开了用于减少信号中的干扰的方法和系统。 该方法的方面可以包括产生第一本地振荡器信号。 产生的第一本地振荡器信号可以被相移以产生第二本地振荡器信号，并且第二本地振荡器信号可以被相移以产生第三本地振荡器信号。 第一，第二和第三本地振荡器信号可以被组合以产生组合的本地振荡器信号，其中可以从组合的本地振荡器信号中消除三次谐波和/或第五谐波。 所产生的第二本地振荡器信号可以乘以二（2）的平方根的因子，第一和第三本地振荡器信号可以被加到相乘的第二本机振荡器信号，输入信号可以是 与产生的组合本地振荡器信号混合以产生混合输出信号。

公开(公告)号：US07231196B2

公开(公告)日：2007-06-12

申请号：US10015993

申请日：2001-12-12

申请人： Hung-Ming Chien ,  Meng-An Pan ,  Stephen Wu ,  Brima Ibrahim

发明人： Hung-Ming Chien ,  Meng-An Pan ,  Stephen Wu ,  Brima Ibrahim

IPC分类号： H04B7/00 ,  H04B1/18

CPC分类号： H03L7/1978 ,  H03L7/0891

摘要： A method and apparatus for fractional-N synthesis includes processing that begins by generating a 1st feedback frequency from the output frequency based on a fixed divider value. The processing continues by generating a 2nd feedback frequency from the output frequency based on a selectable divider value, a modified fractional value of the divider value, and a modified integer value of the divider value. The processing continues by determining whether the fractional value of the divider value is within a range of fractional values. If so, the 1st feedback frequency is used to produce the output. If the fractional portion of the divider value is not within the range of fractional values, the 2nd feedback frequency is used to produce the output frequency.

摘要翻译： 用于分数N合成的方法和装置包括通过基于固定分频值从输出频率产生1 ^{反馈频率而开始的处理。 该处理继续，基于可选择的分频值，分频值的修正分数值和分频值的修正整数值，从输出频率产生二极点反馈频率。 通过确定分频值的分数值是否在分数值的范围内，继续处理。 如果是这样，则使用第一反馈频率来产生输出。 如果分频值的小数部分不在分数值的范围内，则使用反馈频率为2的反馈频率来产生输出频率。}

公开(公告)号：US07145390B2

公开(公告)日：2006-12-05

申请号：US10953362

申请日：2004-09-30

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03F3/45

CPC分类号： H03F3/189 ,  H03F3/45179

摘要： The invention enables an increase in linearity of a power amplifier while reducing current consumption by supplying a bias current to the power amplifier in a Class AB mode.

公开(公告)号：US07136622B2

公开(公告)日：2006-11-14

申请号：US11110349

申请日：2005-04-19

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Hung-Ming Chien ,  Meng-An Pan

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Hung-Ming Chien ,  Meng-An Pan

IPC分类号： H04B7/14

CPC分类号： H03F3/45183 ,  H03F3/245 ,  H03F3/45475 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/10 ,  H04B1/40 ,  H04B17/14

摘要： An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器，发射器，本地振荡器（LO）发生器，控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中，其中包括过滤器和电感器等组件。 用于接收机，发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机，发射机和LO发生器的增益，频率特性，选择性，本底噪声和失真特性。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20060220738A1

公开(公告)日：2006-10-05

申请号：US11094272

申请日：2005-03-31

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03F3/68

CPC分类号： H04B1/0483

摘要： A method and apparatus are provided for enabling a transmitter to have a substantially linear magnitude response and a substantially linear phase response. The transmitter includes first and second programmable gain amplifiers (PGAs). The first PGA is tuned to have a resonant frequency that is less than an operating frequency of the first PGA. The second PGA is tuned to have a resonant frequency that is greater than an operating frequency of the second PGA. A magnitude response at an output of the first PGA and a magnitude response at an output of the second PGA combine to provide a substantially linear magnitude response across a frequency range that includes the operating frequency of the first or second PGA. According to an embodiment, the first and second PGAs have the same operating frequency.

摘要翻译： 提供了一种方法和装置，用于使得发射机具有基本线性的幅度响应和基本上线性的相位响应。 发射机包括第一和第二可编程增益放大器（PGA）。 第一个PGA调谐为具有小于第一个PGA的工作频率的谐振频率。 第二PGA调谐为具有大于第二PGA的工作频率的谐振频率。 在第一PGA的输出处的幅度响应和在第二PGA的输出处的幅度响应被组合以在包括第一或第二PGA的工作频率的频率范围内提供基本上线性的幅度响应。 根据实施例，第一和第二PGA具有相同的工作频率。

公开(公告)号：US20060217090A1

公开(公告)日：2006-09-28

申请号：US11087704

申请日：2005-03-24

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H04M1/00

CPC分类号： H04B1/0003 ,  H03F1/0261 ,  H03F3/45188 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307 ,  H03G2201/40 ,  H04B1/0475

摘要： A transmitter includes a dual mode modulator and an amplifier coupled to the dual mode modulator. The dual mode modulator implements a linear modulation scheme during a first mode of the modulator to produce a variable envelope modulated signal. The dual mode modulator implements a non-linear modulation scheme during a second mode of the modulator to produce a constant envelope modulated signal. The amplifier is biased as a linear amplifier during the first mode of the modulator and is biased as a non-linear amplifier during the second mode of the modulator. A feed-forward connection between the dual mode modulator and the amplifier is used to indicate a change in modulation mode and to adjust the bias of the amplifier. A power of the constant envelope modulated signal is increased such that an operating point of the amplifier remains substantially constant during the first and second modes of the modulator.

公开(公告)号：US20060049874A1

公开(公告)日：2006-03-09

申请号：US10953362

申请日：2004-09-30

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03F3/45

CPC分类号： H03F3/189 ,  H03F3/45179

摘要： The invention enables an increase in linearity of a power amplifier while reducing current consumption by supplying a bias current to the power amplifier in a Class AB mode.

摘要翻译： 本发明能够通过在AB类模式下向功率放大器提供偏置电流来降低功率放大器的线性度，同时降低电流消耗。

公开(公告)号：US20050186917A1

公开(公告)日：2005-08-25

申请号：US11110349

申请日：2005-04-19

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Hung-Ming Chien ,  Meng-An Pan

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Hung-Ming Chien ,  Meng-An Pan

IPC分类号： H03H11/12 ,  H03H21/00 ,  H04B1/40 ,  H04B7/14 ,  H04B1/38

CPC分类号： H03F3/45183 ,  H03F3/245 ,  H03F3/45475 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/10 ,  H04B1/40 ,  H04B17/14

摘要： An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

摘要翻译： 在说明书和附图中描述和示出的本发明的示例性实施例是具有接收器，发射器，本地振荡器（LO）发生器，控制器和自检单元的收发器。 所有这些组件都可以封装以集成到单个IC中，其中包括过滤器和电感器等组件。 用于接收机，发射机和LO发生器的自适应编程和校准的控制器。 自检单元产生用于确定接收机，发射机和LO发生器的增益，频率特性，选择性，本底噪声和失真特性。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。

公开(公告)号：US20050164667A1

公开(公告)日：2005-07-28

申请号：US10761625

申请日：2004-01-22

申请人： Meng-An Pan ,  Bojko Marholev

发明人： Meng-An Pan ,  Bojko Marholev

IPC分类号： H03G1/00 ,  H03G3/30 ,  H03G7/00 ,  H04B1/18

CPC分类号： H03G3/3042 ,  H03G1/0088 ,  H03G7/001

摘要： A power amplifier for use in a transmitter enables linear in dB output power control capability with 2 dB step sizes.

摘要翻译： 用于发射机的功率放大器可实现具有2 dB步长的线性dB输出功率控制能力。

公开(公告)号：US08750813B2

公开(公告)日：2014-06-10

申请号：US12470378

申请日：2009-05-21

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H04B1/04 ,  H01Q11/12

CPC分类号： H04B1/04 ,  H03G3/3042 ,  H04B2001/0416

摘要： A transmitter RF front-end integrated on a single substrate is enabled to determine whether associated IF amplification stage provides a required transmission gain for transmitting an output signal of an application. A dedicated power amplifier driver within the transmitter RF front-end is configured to provide additional gain, when needed based on the determination, to meet the required transmission gain for transmitting the output signal. The associated IF amplification stage comprises an upconversion mixer and a lowpass filter (LPF). The upconversion mixer may be implemented as an active mixer or a passive mixer. The upconversion mixer and the dedicated power amplifier driver are enabled to operate in 2.44 gigahertz. A maximum gain provided by the associated intermediate frequency (IF) amplification stage for transmitting the output signal is determined to decide the additional gain provided by the dedicated power amplifier driver by comparing with the required transmission gain.

摘要翻译： 集成在单个基板上的发射器RF前端能够确定相关联的IF放大级是否提供用于发送应用的输出信号的所需传输增益。 发射机RF前端内的专用功率放大器驱动器被配置为当需要基于该确定时提供额外的增益，以满足用于传输输出信号的所需传输增益。 相关的IF放大级包括上变频混频器和低通滤波器（LPF）。 上变频混频器可以实现为有源混频器或无源混频器。 上变频混频器和专用功率放大器驱动器使能工作在2.44千兆赫兹。 确定用于发送输出信号的相关联的中频（IF）放大级提供的最大增益，以通过与所需的传输增益进行比较来确定由专用功率放大器驱动器提供的附加增益。