公开(公告)号：US20080139132A1

公开(公告)日：2008-06-12

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

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。

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。

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。

公开(公告)号：US20110143791A1

公开(公告)日：2011-06-16

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： H04W88/00

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。

公开(公告)号：US20080137566A1

公开(公告)日：2008-06-12

申请号：US11618848

申请日：2006-12-31

申请人： Bojko Marholev ,  Arya Behzad ,  Meng-An Pan ,  Seema Anand

发明人： Bojko Marholev ,  Arya Behzad ,  Meng-An Pan ,  Seema Anand

IPC分类号： H04B7/00

CPC分类号： H04B1/406 ,  H04B2001/0416 ,  H04W84/12 ,  H04W84/18 ,  H04W88/06 ,  Y02D70/122 ,  Y02D70/124 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/40

摘要： Aspects of a method and system for a shared high-power transmit path for a multi-protocol transceiver are disclosed. Aspects of one method may include sharing a first power amplifier with a WLAN signal and a Bluetooth signal. The first power amplifier may amplify the WLAN signal and/or the Bluetooth signal simultaneously, or individually. A second power amplifier may be used to amplify the Bluetooth signal, where the first power amplifier may have a higher gain than the second power amplifier. Power may be reduced to the second power amplifier in instances where the first power amplifier is used to amplify the Bluetooth signal. The Bluetooth signal may be communicated to the first power amplifier via a switching circuit, which may comprise one or more switching stages.

摘要翻译： 公开了用于多协议收发器的共享高功率发射路径的方法和系统的方面。 一种方法的方面可以包括共享具有WLAN信号和蓝牙信号的第一功率放大器。 第一功率放大器可以同时或单独地放大WLAN信号和/或蓝牙信号。 可以使用第二功率放大器来放大蓝牙信号，其中第一功率放大器可以具有比第二功率放大器更高的增益。 在使用第一功率放大器来放大蓝牙信号的情况下，功率可以减小到第二功率放大器。 蓝牙信号可以经由开关电路传送到第一功率放大器，开关电路可以包括一个或多个开关级。

公开(公告)号：US08364100B2

公开(公告)日：2013-01-29

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。

公开(公告)号：US20110053522A1

公开(公告)日：2011-03-03

申请号：US12862111

申请日：2010-08-24

申请人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Meng-An Pan ,  Hung-Ming Chien ,  Shahla Khorram ,  William T. Colleran ,  Jacob Rael ,  Masood Syed ,  Brima Ibrahim ,  Stephen Wu ,  Shervin Moloudi

发明人： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Meng-An Pan ,  Hung-Ming Chien ,  Shahla Khorram ,  William T. Colleran ,  Jacob Rael ,  Masood Syed ,  Brima Ibrahim ,  Stephen Wu ,  Shervin Moloudi

IPC分类号： H04B1/38

CPC分类号： H03D3/244 ,  H03J2200/04 ,  H03L7/0995 ,  H03L7/18 ,  H03L2207/12 ,  H04B1/707 ,  H04B1/713 ,  H04B17/101 ,  H04B17/14 ,  H04B17/19 ,  H04B17/20

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：US07741670B2

公开(公告)日：2010-06-22

申请号：US11239341

申请日：2005-09-30

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H01L27/108

CPC分类号： H01L29/94 ,  H01L23/5223 ,  H01L27/0805 ,  H01L27/0811 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01L2924/00

摘要： A semiconductor capacitor that includes a plurality of overlapping conductive layers and a field-effect transistor. The plurality of conductive layers include a first and second conductive layers that are spaced apart to creating a capacitance between the plurality of layers. In the semiconductor capacitor, the FET has a source, a drain and a gate. When the FET is in conduction mode, a capacitance is created between the gate and the conductive path in the semiconductor substrate between the source and the drain. The semiconductor capacitor's total capacitance is increased by coupling the drain and the source to the first conductive layer and coupling the gate to the second conductive layer.

摘要翻译： 一种半导体电容器，包括多个重叠导电层和场效应晶体管。 多个导电层包括间隔开以在多个层之间产生电容的第一和第二导电层。 在半导体电容器中，FET具有源极，漏极和栅极。 当FET处于导通模式时，在源极和漏极之间的半导体衬底中的栅极和导电路径之间产生电容。 通过将漏极和源耦合到第一导电层并将栅极耦合到第二导电层来增加半导体电容器的总电容。

公开(公告)号：US07616055B2

公开(公告)日：2009-11-10

申请号：US11902020

申请日：2007-09-18

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03F1/14

CPC分类号： H03F3/1935 ,  H03F3/45381 ,  H03F2203/45361 ,  H03F2203/45368 ,  H03F2203/45638 ,  H03G1/0088 ,  H03G3/3042

摘要： A transmitter includes a first variable gain amplifier (VGA) and a second VGA coupled to an output of the first VGA. The first and second VGAs each comprise a plurality of parallel gain stages. Gains of the first and second VGAs are equal to the sum of the gains of the activated parallel amplifiers within each corresponding plurality of parallel amplifiers. Each parallel amplifier comprises a parallel differential amplifier controlled by a pair of switches to activate and deactivate the parallel differential amplifier. The gains of the first and second VGAs are increased by activating additional parallel amplifiers. The gains of the first and second VGAs are decreased by deactivating additional parallel amplifiers. The variable gains of the first and second VGAs provide an extended gain control with improved local oscillator (LO) leakage interference rejection.

摘要翻译： 发射机包括耦合到第一VGA的输出的第一可变增益放大器（VGA）和第二VGA。 第一和第二VGA分别包括多个并联增益级。 第一和第二VGA的增益等于每个对应的多个并行放大器内激活的并联放大器的增益之和。 每个并联放大器包括由一对开关控制的并联差分放大器，以激活和去激活并行差分放大器。 通过激活附加的并行放大器来增加第一和第二VGA的增益。 第一和第二VGA的增益通过去激活附加并行放大器而减小。 第一和第二VGA的可变增益提供了具有改进的本地振荡器（LO）泄漏干扰抑制的扩展增益控制。

公开(公告)号：US07583143B2

公开(公告)日：2009-09-01

申请号：US11617458

申请日：2006-12-28

申请人： Meng-An Pan

发明人： Meng-An Pan

IPC分类号： H03F3/45

CPC分类号： H03G1/0035

摘要： Methods and systems for digitally controlling transmitter gain compensation are disclosed. Aspects of one method may include applying an effective negative resistance to differential outputs of amplifying circuitry to compensate for gain changes that may be due to temperature changes. The effective negative resistance may be provided via a plurality of load circuits coupled in parallel to the differential outputs. The plurality of load circuits may have similar effective negative resistances, or the plurality of load circuits may be binary weighted. Each load circuit may be selected via digital control signals that may enable the load circuit. This may allow adjusting of the effective negative resistance by selecting different load circuits.

摘要翻译： 公开了用于数字控制发射机增益补偿的方法和系统。 一种方法的方面可以包括对放大电路的差分输出施加有效的负电阻以补偿可能由温度变化引起的增益变化。 可以经由与差分输出并联耦合的多个负载电路来提供有效负电阻。 多个负载电路可以具有相似的有效负电阻，或者多个负载电路可以是二进制加权的。 每个负载电路可以通过可以使得负载电路的数字控制信号来选择。 这可以通过选择不同的负载电路来调节有效负电阻。