专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20060049874A1 Differential power amplifier and method in class AB mode 有权
标题翻译： AB类模式中的差分功率放大器和方法
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。

52. 发明申请

US20050164667A1 System and method for adjusting power amplifier output power in linear dB steps 有权
标题翻译：用于以线性dB步长调节功率放大器输出功率的系统和方法
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。

53. 发明授权

US08750813B2 Method and system for a dynamic transmission gain control using a dedicated power amplifier driver in a radio frequency transmitter 有权
标题翻译：用于在射频发射机中使用专用功率放大器驱动器的动态传输增益控制的方法和系统
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。

54. 发明授权

US08369798B2 Linearized transmitter including a power amplifier 有权
标题翻译：线性化发射机包括功率放大器
公开(公告)号：US08369798B2
公开(公告)日：2013-02-05
申请号：US13031331
申请日：2011-02-21
申请人： Meng-An Pan , Ali Afsahi , Vikram Magoon , Arya Behzad
发明人： Meng-An Pan , Ali Afsahi , Vikram Magoon , Arya Behzad
IPC分类号： H04B1/40
CPC分类号： H04B1/02 , H03F1/32 , H03F3/24 , H03F2200/168 , H03F2200/321 , H03F2200/336 , H04B1/005 , H04B2001/0408
摘要： A method and system for wireless communication is provided and may include generating a single analog quadrature signal in a chip including RF transmitters and receivers using a baseband processor, and generating output RF signals based on the quadrature signal in corresponding RF transmitters. The output RF signals may be communicated to the RF receivers via a feedback path including circuitry external to the RF receivers. The dedicated circuitry may include a transmit/receive switch and/or an on-chip or off-chip balun. The quadrature signal may include in-phase and quadrature-phase components. The output RF signal communicated via the feedback path may be down-converted utilizing mixers in the RF receivers and communicated to the baseband processor. Distortion in the quadrature signal may be estimated utilizing the communicated down-converted output RF signals and subsequently generated quadrature signals may be predistorted based on the distortion estimation.
摘要翻译：提供了一种用于无线通信的方法和系统，并且可以包括使用基带处理器在包括RF发射机和接收机的芯片中生成单个模拟正交信号，并且基于对应的RF发射机中的正交信号产生输出RF信号。输出RF信号可以经由包括RF接收器外部电路的反馈路径传送到RF接收器。专用电路可以包括发送/接收开关和/或片上或片外平衡 - 不平衡转换器。正交信号可以包括同相和正交相分量。通过反馈路径传送的输出RF信号可以利用RF接收机中的混频器进行下变频，并传送给基带处理器。正交信号中的失真可以利用所传送的下变频输出RF信号来估计，随后产生的正交信号可以基于失真估计来预失真。

55. 发明授权

US08244193B2 Linear and non-linear dual mode transmitter 有权
标题翻译：线性和非线性双模发射机
公开(公告)号：US08244193B2
公开(公告)日：2012-08-14
申请号：US12348450
申请日：2009-01-05
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H01Q11/12 , H04K3/00
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.
摘要翻译：发射机包括耦合到双模调制器的双模调制器和放大器。双模式调制器在调制器的第一模式期间实现线性调制方案，以产生可变包络调制信号。双模式调制器在调制器的第二模式期间实现非线性调制方案，以产生恒定的包络调制信号。放大器在调制器的第一模式期间被偏置为线性放大器，并且在调制器的第二模式期间被偏置为非线性放大器。双模式调制器和放大器之间的前馈连接用于指示调制模式的变化并调整放大器的偏置。恒定包络调制信号的功率增加，使得放大器的工作点在调制器的第一和第二模式期间保持基本恒定。

56. 发明授权

US07907921B2 Wireless transmitter having multiple power amplifier drivers (PADs) that are selectively biased to provide substantially linear magnitude and phase responses 有权
标题翻译：具有多个功率放大器驱动器（PAD）的无线发射器被选择性地偏置以提供基本线性的幅度和相位响应
公开(公告)号：US07907921B2
公开(公告)日：2011-03-15
申请号：US12457542
申请日：2009-06-15
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H01Q11/12 , H04B1/04
CPC分类号： H03F3/45188 , H03F1/0205 , H03F1/0277 , H03F1/32 , H03F3/24 , H03F3/72 , H03F2203/45481 , H03F2203/45652 , H03G3/3026
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 power amplifier drivers (PADs) having respective first and second non-linear phase responses. The first non-linear phase response is based on a first bias applied to the first PAD, and the second non-linear phase response is based on a second bias applied to the second PAD. The first and second PADs are coupled in parallel to provide a combined substantially linear phase response. According to an embodiment, the first and second PADs have respective first and second average input capacitances. Signal swings about the first and second biases vary the respective first and second average input capacitances, which may be combined to provide a combined average input capacitance that is substantially insensitive to the signal swings about the first and second biases.
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。发射机包括具有相应的第一和第二非线性相位响应的第一和第二功率放大器驱动器（PAD）。第一非线性相位响应基于施加到第一PAD的第一偏置，并且第二非线性相位响应基于施加到第二PAD的第二偏置。第一和第二PAD并联耦合以提供组合的基本上线性的相位响应。根据实施例，第一和第二PAD具有相应的第一和第二平均输入电容。关于第一和第二偏置的信号摆动改变相应的第一和第二平均输入电容，其可以被组合以提供对于关于第一和第二偏压的信号摆动基本上不敏感的组合平均输入电容。

57. 发明授权

US07894780B2 Method and system for a linearized transmitter including a power amplifier 失效
标题翻译：一种包括功率放大器的线性化发射机的方法和系统
公开(公告)号：US07894780B2
公开(公告)日：2011-02-22
申请号：US11762573
申请日：2007-06-13
申请人： Meng-An Pan , Ali Afsahi , Vikram Magoon , Arya Behzad
发明人： Meng-An Pan , Ali Afsahi , Vikram Magoon , Arya Behzad
IPC分类号： H04B1/02 , H01Q11/12
CPC分类号： H04B1/02 , H03F1/32 , H03F3/24 , H03F2200/168 , H03F2200/321 , H03F2200/336 , H04B1/005 , H04B2001/0408
摘要： Various aspect of a system for a linearized transmitter including a power amplifier may include at least one transconductance amplifier that enables generation of a single analog quadrature signal. Transmitter mixers may enable generation of a plurality of upconverted RF signals in a corresponding plurality of RF processing chains based on the generated single analog quadrature signal. In various embodiments of the invention, a gain stage, for example gain stage, may also be referred to as an RF processing chain. Power amplifier circuit may enable generation of a corresponding plurality of RF output signals within a wireless communication system based on the generated plurality of upconverted RF signals.
摘要翻译：用于包括功率放大器的线性化发射机的系统的各个方面可以包括能够产生单个模拟正交信号的至少一个跨导放大器。发射机混频器可以使得能够基于所生成的单个模拟正交信号在对应的多个RF处理链中产生多个上变频RF信号。在本发明的各种实施例中，增益级，例如增益级，也可以被称为RF处理链。功率放大器电路可以使得能够基于所生成的多个上变频RF信号在无线通信系统内产生相应的多个RF输出信号。

58. 发明申请

US20100311366A1 METHOD AND SYSTEM FOR A TRANSMITTER LOFT CANCELLATION SCHEME THAT MAINTAINS IQ BALANCE 有权
标题翻译：用于维持智商平衡的发送者信号取消方案的方法和系统
公开(公告)号：US20100311366A1
公开(公告)日：2010-12-09
申请号：US12792905
申请日：2010-06-03
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H04B1/04
CPC分类号： H04B1/525
摘要： Methods and systems for a transmitter LOFT cancellation scheme that maintains IQ balance are disclosed. Aspects of one method may include providing current compensation to both differential inputs of a mixer for each of I and Q channels. An initial current compensation of X units may be provided, followed by subsequent compensation as needed. The initial compensation may be provided to each differential input of the mixers used for I and Q channels. The subsequent current compensation for the I channel may be independent of the subsequent current compensation for the Q channel. Subsequent current compensation to a first differential input for a mixer may be increased by Y units while decreasing current compensation to the second differential input of the mixer by Y units. In this manner, the DC common mode level for the mixer may remain the same at the initial DC compensation current of X units for both mixers.
摘要翻译：公布了维持IQ平衡的发射机LOFT取消方案的方法和系统。一种方法的方面可以包括为I和Q通道中的每一个向混频器的两个差分输入提供电流补偿。可以提供X单位的初始电流补偿，然后根据需要进行后续补偿。可以将初始补偿提供给用于I和Q通道的混频器的每个差分输入。对I通道的后续电流补偿可以独立于Q通道的后续电流补偿。对于混合器的第一差分输入的随后的电流补偿可以通过Y单元增加，同时将混合器的第二差分输入的电流补偿减少Y个单位。以这种方式，对于两个混频器，混频器的DC共模电平在X单元的初始DC补偿电流下可以保持相同。

59. 发明授权

US07701259B2 Method and system for wide range amplitude detection 失效
标题翻译：宽范围幅度检测方法和系统
公开(公告)号：US07701259B2
公开(公告)日：2010-04-20
申请号：US11690250
申请日：2007-03-23
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H03K5/153
CPC分类号： H03F3/45179 , G01R19/04 , H03F2200/78 , H03F2203/45522 , H03F2203/45591 , H03F2203/45686 , H03G3/30 , H03G7/00
摘要： Aspects of a method and system for wide range amplitude detection are provided. In this regard, many electronic systems may require amplitude detection of a variety of signals with widely varying amplitudes. Aspects of the invention may comprise suitable logic, circuitry, and/or code to perform amplitude detection and may be easily configured to accommodate a wide range of amplitudes. In this regard, the configuration of the amplitude detector may be performed via simple design changes and/or may be dynamically configured by suitable logic, circuitry, and/or code. Accordingly, multiplexing a single instance of the wide range amplitude detector and/or multiplexing multiple instances of the wide range amplitude detector may result in reduced design time, reduced circuit size, and/or reduced cost.
摘要翻译：提供了用于宽范围幅度检测的方法和系统的方面。在这方面，许多电子系统可能需要对具有广泛变化幅度的各种信号进行幅度检测。本发明的方面可以包括用于执行振幅检测的合适的逻辑，电路和/或代码，并且可以容易地配置为适应宽范围的幅度。在这方面，幅度检测器的配置可以通过简单的设计改变来执行和/或可以由合适的逻辑，电路和/或代码来动态配置。因此，对宽范围幅度检测器的单个实例进行多路复用和/或复用多范围幅度检测器的多个实例可以导致缩短的设计时间，减小的电路尺寸和/或降低的成本。

60. 发明授权

US07603098B2 Programmable IF frequency filter for enabling a compromise between DC offset rejection and image rejection 有权
标题翻译：可编程中频滤波器，用于实现直流偏移抑制和图像抑制之间的折中
公开(公告)号：US07603098B2
公开(公告)日：2009-10-13
申请号：US10813270
申请日：2004-03-31
申请人： Meng-An Pan
发明人： Meng-An Pan
IPC分类号： H04B1/10
CPC分类号： H04B1/123 , H03G3/3052 , H03G2201/706 , H03J3/06
摘要： The invention enables a compromise between DC offset rejection and image rejection through the use of a bandpass filter having a variable center frequency.
摘要翻译：本发明通过使用具有可变中心频率的带通滤波器来实现DC偏移抑制和图像抑制之间的折中。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式