公开(公告)号：US08364100B2

公开(公告)日：2013-01-29

申请号：US12792905

申请日：2010-06-03

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H04B1/04

CPC classification number: H04B1/525

Abstract: 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.

Abstract translation: 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

Applicant: 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

Inventor： 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: H04B1/38

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

Abstract: 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.

Abstract translation: 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

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H01L27/108

CPC classification number: H01L29/94 ,  H01L23/5223 ,  H01L27/0805 ,  H01L27/0811 ,  H01L2924/0002 ,  H01L2924/3011 ,  H01L2924/00

Abstract: 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.

Abstract translation: 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

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F1/14

CPC classification number: H03F3/1935 ,  H03F3/45381 ,  H03F2203/45361 ,  H03F2203/45368 ,  H03F2203/45638 ,  H03G1/0088 ,  H03G3/3042

Abstract: 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.

Abstract translation: 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

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F3/45

CPC classification number: H03G1/0035

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20080139132A1

公开(公告)日：2008-06-12

申请号：US11762573

申请日：2007-06-13

Applicant: Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

Inventor： Meng-An Pan ,  Ali Afsahi ,  Vikram Magoon ,  Arya Behzad

IPC: H04B1/02

CPC classification number: H04B1/02 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/168 ,  H03F2200/321 ,  H03F2200/336 ,  H04B1/005 ,  H04B2001/0408

Abstract: 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.

Abstract translation: 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：US20080137566A1

公开(公告)日：2008-06-12

申请号：US11618848

申请日：2006-12-31

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

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

IPC: H04B7/00

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

Abstract: 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.

Abstract translation: 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：US20070087711A1

公开(公告)日：2007-04-19

申请号：US11252788

申请日：2005-10-19

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H04B1/04

CPC classification number: H04B1/406 ,  H03C3/40 ,  H04B1/005 ,  H04B1/0483

Abstract: A frequency translation apparatus provides selective frequency translation of an input signal with reduced distortion effects. The frequency translation apparatus includes a plurality of mixers. Each mixer is coupled to the input signal and to a corresponding local oscillator (LO) signal. The frequency translation apparatus further includes a plurality of bias networks corresponding to the plurality of mixers. Each bias network produces a bias voltage for a corresponding mixer. A mixer is deactivated by providing an LO input of a mixer to a corresponding bias voltage. A mixer is activated by not providing the LO input of the mixer to the corresponding bias voltage. An activated mixer subsequently frequency translates the input signal according to the corresponding LO signal to produce a corresponding output signal.

Abstract translation: 频率转换装置提供具有减小的失真效应的输入信号的选择性频率转换。 频率转换装置包括多个混频器。 每个混频器耦合到输入信号和相应的本地振荡器（LO）信号。 频率转换装置还包括对应于多个混频器的多个偏置网络。 每个偏置网络为相应的混频器产生偏置电压。 通过将混频器的LO输入提供给相应的偏置电压来使混频器失效。 通过不将混频器的LO输入提供给相应的偏置电压来激活混频器。 激活的混频器随后根据对应的LO信号对输入信号进行频率转换，以产生相应的输出信号。

公开(公告)号：US07199659B2

公开(公告)日：2007-04-03

申请号：US10951793

申请日：2004-09-29

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F3/45

CPC classification number: H03F1/3211 ,  H03F1/02 ,  H03F3/195 ,  H03F3/24 ,  H03F3/45188 ,  H03F2200/06 ,  H03F2200/09 ,  H03F2203/45481 ,  H03F2203/45638 ,  H04B2001/045

Abstract: The invention enables an increase in linear power output ranges in a power amplifier by using an unmatched power amplifier driver in place of a matched power amplifier driver.

Abstract translation: 本发明通过使用不匹配的功率放大器驱动器代替匹配的功率放大器驱动器，能够增加功率放大器中的线性功率输出范围。

公开(公告)号：US07049882B2

公开(公告)日：2006-05-23

申请号：US10769900

申请日：2004-02-03

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: G05F1/10 ,  G05F3/02

CPC classification number: H04B1/04

Abstract: Embodiments of the invention enable generation of an IF output signal amplitude that is less sensitive to process voltage and temperature than conventional transmitters.

Abstract translation: 本发明的实施例能够产生对于过程电压和温度比常规发射机更不敏感的IF输出信号幅度。