公开(公告)号：US07904037B2

公开(公告)日：2011-03-08

申请号：US12273313

申请日：2008-11-18

Applicant: Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Jacob Rael ,  Syed Masood ,  Brima Ibrahim ,  Hung-Ming Chien ,  Stephen Wu ,  Meng-An Pan

Inventor： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Jacob Rael ,  Syed Masood ,  Brima Ibrahim ,  Hung-Ming Chien ,  Stephen Wu ,  Meng-An Pan

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H03B19/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B27/00 ,  H03B2200/0078 ,  H03F1/26 ,  H03F3/45188 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45464 ,  H03F2203/45526 ,  H03F2203/45544 ,  H03F2203/45554 ,  H03F2203/45638 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/08 ,  H03J2200/10 ,  H04B17/14

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：US07734259B2

公开(公告)日：2010-06-08

申请号：US11617479

申请日：2006-12-28

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：US07555263B1

公开(公告)日：2009-06-30

申请号：US09634552

申请日：2000-08-08

Applicant: Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Brima Ibrahim ,  Jacob Rael ,  Shahla Khorram ,  Shervin Moloudi ,  Stephen Wu ,  Hooman Darabi ,  William T. Colleran ,  Ed Chien ,  Meng-An Pan

Inventor： Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Brima Ibrahim ,  Jacob Rael ,  Shahla Khorram ,  Shervin Moloudi ,  Stephen Wu ,  Hooman Darabi ,  William T. Colleran ,  Ed Chien ,  Meng-An Pan

IPC: H04B7/14

CPC classification number: H04B1/40 ,  H03B21/01 ,  H03H11/1291 ,  H03H21/0001 ,  H03H21/0012 ,  H03H2011/0494 ,  H03J2200/10 ,  H04B1/30 ,  H04B17/104 ,  H04B17/14 ,  H04B17/19

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：US07551029B2

公开(公告)日：2009-06-23

申请号：US11372392

申请日：2006-03-10

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F3/45

CPC classification number: H03F3/45206 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/105 ,  H03F2203/45031 ,  H03F2203/45052 ,  H03F2203/45352 ,  H03F2203/45396 ,  H03F2203/45494

Abstract: A transconductance stage providing gain control includes an input stage to convert a first differential input voltage and a second differential input voltage to a first intermediate current and a second intermediate current, respectively. An output stage generates a first output current signal and a second output current signal based on the first and second intermediate currents, respectively. The output stage includes a first plurality of output transistors coupled to a first plurality of corresponding switch resistors and a second plurality of output transistors coupled to a second plurality of corresponding switch resistors. The number of activated switch resistors of the first plurality of switch resistors determines a gain of the first output current signal and a number of activated switch resistors of the second plurality of switch resistors determines a gain of the second output current signal.

Abstract translation: 提供增益控制的跨导级包括分别将第一差分输入电压和第二差分输入电压转换为第一中间电流和第二中间电流的输入级。 输出级分别基于第一和第二中间电流产生第一输出电流信号和第二输出电流信号。 输出级包括耦合到第一多个对应的开关电阻器的第一多个输出晶体管和耦合到第二多个对应的开关电阻器的第二多个输出晶体管。 第一多个开关电阻器的激活的开关电阻器的数量确定第一输出电流信号的增益，并且第二多个开关电阻器的多个激活的开关电阻器确定第二输出电流信号的增益。

公开(公告)号：US07440732B2

公开(公告)日：2008-10-21

申请号：US11211565

申请日：2005-08-26

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H04B1/0475 ,  H03D2200/009

Abstract: A transmitter includes a first mixer to generate a first output signal by up-converting a first baseband signal having a first DC offset component. A second mixer generates a second output signal by up-converting a second baseband signal having a second DC offset component. The second output signal is subtracted from the first output signal to generate a transmitter output signal. The transmitter output signal includes a local oscillator (LO) leakage signal caused by the first and/or second DC offset components. A third mixer produces a third output signal by up-converting the first DC offset component. A fourth mixer produces a fourth output signal by up-converting the second DC offset component. The fourth output signal is subtracted from the third output signal to generate a LO leakage cancellation signal. The LO leakage cancellation signal is subtracted from the transmitter output signal, thereby reducing a power of the LO leakage signal.

Abstract translation: 发射机包括第一混频器，用于通过对具有第一DC偏移分量的第一基带信号进行上变频来产生第一输出信号。 第二混频器通过对具有第二DC偏移分量的第二基带信号进行上变频来产生第二输出信号。 从第一输出信号中减去第二输出信号以产生发射机输出信号。 发射机输出信号包括由第一和/或第二DC偏移分量引起的本地振荡器（LO）泄漏信号。 第三混频器通过对第一DC偏移分量进行上变频来产生第三输出信号。 第四混频器通过对第二DC偏移分量进行上变频来产生第四输出信号。 从第三输出信号中减去第四输出信号以产生LO泄漏消除信号。 从发送器输出信号中减去LO泄漏消除信号，从而降低LO泄漏信号的功率。

公开(公告)号：US07376409B2

公开(公告)日：2008-05-20

申请号：US10879588

申请日：2004-06-30

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H04B1/10

CPC classification number: H04B1/123 ,  H03G3/3052 ,  H03G2201/706 ,  H03J3/06

Abstract: The invention enables a gain adjustment in a receiver to improve signal quality by varying resistance of an input resistor array of a bandpass filter, the array having a plurality of resistors in series with switches that out of the path of the current when the resistors are in use.

Abstract translation: 本发明使接收机中的增益调整能够通过改变带通滤波器的输入电阻阵列的电阻来改善信号质量，该阵列具有与当电阻器处于电流时电流路径之外的开关串联的多个电阻器 使用。

公开(公告)号：US20080045162A1

公开(公告)日：2008-02-21

申请号：US11780905

申请日：2007-07-20

Applicant: Ahmadreza Rofougaran ,  Maryam Rofougaran ,  Meng-An Pan ,  Hung-Ming Chien ,  Shahla Khorram ,  William 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 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：US07274253B2

公开(公告)日：2007-09-25

申请号：US11090067

申请日：2005-03-28

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：US20070210870A1

公开(公告)日：2007-09-13

申请号：US11372392

申请日：2006-03-10

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F3/45

CPC classification number: H03F3/45206 ,  H03F1/0205 ,  H03F3/24 ,  H03F2200/105 ,  H03F2203/45031 ,  H03F2203/45052 ,  H03F2203/45352 ,  H03F2203/45396 ,  H03F2203/45494

Abstract: A transconductance stage providing gain control includes an input stage to convert a first differential input voltage and a second differential input voltage to a first intermediate current and a second intermediate current, respectively. An output stage generates a first output current signal and a second output current signal based on the first and second intermediate currents, respectively. The output stage includes a first plurality of output transistors coupled to a first plurality of corresponding switch resistors and a second plurality of output transistors coupled to a second plurality of corresponding switch resistors. The number of activated switch resistors of the first plurality of switch resistors determines a gain of the first output current signal and a number of activated switch resistors of the second plurality of switch resistors determines a gain of the second output current signal.

Abstract translation: 提供增益控制的跨导级包括分别将第一差分输入电压和第二差分输入电压转换为第一中间电流和第二中间电流的输入级。 输出级分别基于第一和第二中间电流产生第一输出电流信号和第二输出电流信号。 输出级包括耦合到第一多个对应的开关电阻器的第一多个输出晶体管和耦合到第二多个对应的开关电阻器的第二多个输出晶体管。 第一多个开关电阻器的激活的开关电阻器的数量确定第一输出电流信号的增益，并且第二多个开关电阻器的多个激活的开关电阻器确定第二输出电流信号的增益。

公开(公告)号：US20070170989A1

公开(公告)日：2007-07-26

申请号：US11338068

申请日：2006-01-24

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H03F3/45

CPC classification number: H03F3/45183 ,  H03F2200/372 ,  H03F2203/45544 ,  H03F2203/45658

Abstract: A circuit includes at least two transistors arranged to form a current mirror, at least two transistors operatively coupled to the current mirror, where the transistors are arranged to form a differential pair amplifier, and a follower transistor operatively coupled to the current mirror and to the differential pair. The transistors of the differential pair, the current mirror, and the follower transistor are operatively coupled such that during operation an amplitude of a signal output from the follower transistor is proportional to an amplitude of an signal input into the differential pair.

Abstract translation: 电路包括布置成形成电流镜的至少两个晶体管，可操作地耦合到电流镜的至少两个晶体管，其中晶体管被布置成形成差分对放大器，以及可操作地耦合到电流镜和至 差分对。 差分对，电流镜和跟随器晶体管的晶体管可操作地耦合，使得在操作期间，从跟随器晶体管输出的信号的幅度与输入到差分对的信号的幅度成比例。