公开(公告)号：US07844230B2

公开(公告)日：2010-11-30

申请号：US12492601

申请日：2009-06-26

申请人： Hooman Darabi ,  Brima Ibrahim ,  Ahmadreza Rofougaran

发明人： Hooman Darabi ,  Brima Ibrahim ,  Ahmadreza Rofougaran

IPC分类号： H04B1/38

CPC分类号： H04B1/406

摘要： An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.

摘要翻译： 集成的多模式无线电设备包括多模接收机和多模发射机。 多模接收机包括共享接收机前端，接收机多路复用器和多个接收机IF级。 多模发射机包括共享发射机前端，发射机多路复用器和多个发射机IF级。

公开(公告)号：US07679431B2

公开(公告)日：2010-03-16

申请号：US11944715

申请日：2007-11-26

申请人： Yuyu Chang ,  Hooman Darabi

发明人： Yuyu Chang ,  Hooman Darabi

IPC分类号： H03B1/00 ,  H03K5/00 ,  H04B1/10

CPC分类号： G06G7/16 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D2200/0084

摘要： Low flicker noise mixer and buffer. This design employs some native metal oxide semiconductor field-effect transistors (MOSFETs) (e.g., having no threshold voltage) within a passive mixer whose gates are driven using clock signals. These native MOSFETs maybe biased at one half of the power supply voltage to provide a lower noise figure. A cooperatively operating buffer employs appropriately places MOSFETs and resistors to ensure the desired gain. Relatively larger valued resistors can be employed to provide for higher voltage gain, and this can sometimes be accompanied with using a higher than typical power supply voltage. Source followers serve as output buffers and also ensure the required output DC voltage level as well. It is also noted that this design can be implemented using n-channel metal oxide semiconductor field-effect transistors (N-MOSFETs) of p-channel metal oxide semiconductor field-effect transistors (P-MOSFETs).

摘要翻译： 低闪烁噪声混频器和缓冲器。 该设计在无源混频器内采用一些本征金属氧化物半导体场效应晶体管（MOSFET）（例如，不具有阈值电压），其门的栅极使用时钟信号驱动。 这些原生MOSFET可能偏置在电源电压的一半处，以提供较低的噪声系数。 合作运行的缓冲器适当地放置MOSFET和电阻器以确保期望的增益。 可以采用相对较大值的电阻器来提供更高的电压增益，并且有时可以伴随使用高于典型的电源电压。 源跟随器用作输出缓冲器，并且还确保所需的输出直流电压电平。 还应注意，该设计可以使用p沟道金属氧化物半导体场效应晶体管（P-MOSFET）的n沟道金属氧化物半导体场效应晶体管（N-MOSFET）来实现。

公开(公告)号：US20100035563A1

公开(公告)日：2010-02-11

申请号：US12363486

申请日：2009-01-30

申请人： Mohyee Mikhemar ,  Hooman Darabi

发明人： Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/40

CPC分类号： H04B1/18 ,  H04B1/40

摘要： A radio frequency (RF) transceiver front-end includes an antenna, an RF receiver section, an RF transmitter section, a balancing circuit, and a multiple node isolation and coupling circuit. The multiple node isolation and coupling circuit is coupled to the antenna, the RF receiver section, the RF transmitter section, and the balancing circuit. The multiple node isolation and coupling circuit provides an inbound RF signal from the antenna to the RF receiver section and provides an outbound RF signal from the RF transmitter section to the antenna, wherein, by providing an isolating signal to the balancing circuit, the multiple node isolation and coupling circuit substantially isolates the outbound RF signal from the inbound RF signal.

摘要翻译： 射频（RF）收发器前端包括天线，RF接收器部分，RF发射器部分，平衡电路和多节点隔离和耦合电路。 多节点隔离和耦合电路耦合到天线，RF接收器部分，RF发射器部分和平衡电路。 多节点隔离和耦合电路提供从天线到RF接收器部分的入站RF信号，并且将来自RF发射器部分的出站RF信号提供给天线，其中，通过向平衡电路提供隔离信号，多节点 隔离和耦合电路基本上将出站RF信号与入站RF信号隔离开。

公开(公告)号：US20090264074A1

公开(公告)日：2009-10-22

申请号：US12492601

申请日：2009-06-26

申请人： Hooman Darabi ,  Brima Ibrahim ,  Ahmadreza Rofougaran

发明人： Hooman Darabi ,  Brima Ibrahim ,  Ahmadreza Rofougaran

IPC分类号： H04B7/24 ,  H04B7/005

CPC分类号： H04B1/406

摘要： An integrated multimode radio includes a multimode receiver and a multimode transmitter. The multimode receiver includes a shared receiver front-end, a receiver multiplexor, and a plurality of receiver IF stages. The multimode transmitter includes a shared transmitter front-end, a transmitter multiplexor, and a plurality of transmitter IF stages.

摘要翻译： 集成的多模式无线电设备包括多模接收机和多模发射机。 多模接收机包括共享接收机前端，接收机多路复用器和多个接收机IF级。 多模发射机包括共享发射机前端，发射机多路复用器和多个发射机IF级。

公开(公告)号：US20090143033A1

公开(公告)日：2009-06-04

申请号：US11947269

申请日：2007-11-29

申请人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  John Leete ,  Hooman Darabi

IPC分类号： H04B1/04

CPC分类号： H04B1/62 ,  H04B1/0458 ,  H04B2001/0416

摘要： An apparatus comprising: a baseband filter configured to produce a baseband signal utilizing an input signal; a mixer unit configured to produce an intermediate signal utilizing the baseband signal and a local oscillator signal; and a dynamically configurable transformer configured to provide a gain to the intermediate signal, wherein the gain is dynamically configurable.

摘要翻译： 一种装置，包括：基带滤波器，被配置为利用输入信号产生基带信号; 混频器单元，被配置为使用所述基带信号和本地振荡器信号产生中间信号; 以及被配置为向所述中间信号提供增益的动态可配置变压器，其中所述增益是可动态配置的。

公开(公告)号：US20090102562A1

公开(公告)日：2009-04-23

申请号：US11874305

申请日：2007-10-18

申请人： Yuyu Chang ,  Hooman Darabi

发明人： Yuyu Chang ,  Hooman Darabi

IPC分类号： H03F3/16 ,  H03F3/45

CPC分类号： H03F3/45188 ,  H03F3/195 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2203/45384 ,  H03F2203/45386 ,  H03F2203/45392 ,  H03F2203/45544 ,  H03F2203/45548 ,  H03F2203/45554 ,  H03F2203/45596 ,  H03F2203/45638 ,  H04B1/18

摘要： Cross-coupled low noise amplifier for cellular applications. A circuitry implementation that includes two pairs of metal oxide semiconductor field-effect transistors (MOSFETs) (either N-type of P-type) operates as an LNA, which can be used within any of a wide variety of communication devices. In one embodiment, this design is particularly adaptable to cellular telephone applications. A majority of the elements are integrated within the design and need not be implemented off-chip, and this can provide for a reduction in area required by the circuitry. A very high output impedance is provided by using two transistors (implemented in a triple well configuration) with resistive source degeneration. A higher than typical power supply voltage can be employed (if desired) to accommodate the voltage drops of the resistors and transistors.

摘要翻译： 用于蜂窝应用的交叉耦合低噪声放大器。 包括两对金属氧化物半导体场效应晶体管（MOSFET）（N型P型）的电路实现作为LNA工作，可以在各种通信设备中使用。 在一个实施例中，该设计特别适用于蜂窝电话应用。 大多数元件集成在设计中，不需要在片外实现，这可以减少电路所需的面积。 通过使用具有电阻源退化的两个晶体管（以三阱配置实现）来提供非常高的输出阻抗。 可以使用高于典型的电源电压（如果需要）以适应电阻器和晶体管的电压降。

公开(公告)号：US20090011735A1

公开(公告)日：2009-01-08

申请号：US11824663

申请日：2007-07-02

申请人： Alireza Zolfaghari ,  Hooman Darabi

发明人： Alireza Zolfaghari ,  Hooman Darabi

IPC分类号： H04B1/06

CPC分类号： H03L7/093 ,  H03L7/0891 ,  H03L7/18

摘要： A phase locked loop (PLL) a phase detector, a charge pump, a loop filter, a controlled oscillator, and a feedback divider. The phase detector is coupled to produce a difference signal based on a difference between phase of a reference oscillation and phase of a feedback oscillation. The charge pump is coupled to convert the difference signal into an up-signal or a down signal. The loop filter coupled to filter the up signal or the down signal to produce a control signal. The controlled oscillator is coupled to generate an output oscillation based on the control signal. The feedback divider is coupled to generate the feedback oscillation from the output oscillation based on a divider value. The loop filter includes a first resistor-capacitor circuit and a second resistor-capacitor circuit. The first resistor-capacitor circuit is calibrated using a first calibration technique and the second resistor-capacitor circuit is calibrated using a second calibration technique.

摘要翻译： 锁相环（PLL），相位检测器，电荷泵，环路滤波器，受控振荡器和反馈分压器。 相位检测器被耦合以基于参考振荡的相位与反馈振荡的相位之间的差产生差分信号。 电荷泵被耦合以将差信号转换成上信号或下信号。 该滤波器被耦合以对上行信号或下降信号进行滤波以产生控制信号。 受控振荡器被耦合以基于控制信号产生输出振荡。 反馈分压器被耦合以基于分频器值从输出振荡产生反馈振荡。 环路滤波器包括第一电阻 - 电容电路和第二电阻 - 电容电路。 使用第一校准技术校准第一电阻器电容器电路，并且使用第二校准技术校准第二电阻器电容器电路。

公开(公告)号：US07471142B2

公开(公告)日：2008-12-30

申请号：US11430575

申请日：2006-05-09

申请人： Qiang (Tom) Li ,  Hooman Darabi

发明人： Qiang (Tom) Li ,  Hooman Darabi

IPC分类号： H03B1/00

CPC分类号： H03H11/0472 ,  H03F3/72 ,  H03F2200/381 ,  H03F2203/7221 ,  H03H11/0444 ,  H03H11/52 ,  H03H2210/025 ,  H03H2210/036 ,  H03H2210/04

摘要： Various embodiments are disclosed relating filter calibration with cell re-use. According to an example embodiment, an apparatus includes a first circuit, including a variable circuit element. The first circuit is adapted to output an output frequency signal during a calibration mode and to operate as a filter during a filter mode. A control circuit is coupled to the first circuit and is adapted to receive a reference frequency signal and to calibrate the first circuit by adjusting the variable circuit element based on the reference frequency signal and the output frequency signal during the calibration mode. The calibrated first circuit is configured to then operate as a filter during the filter mode.

摘要翻译： 公开了关于过滤器校准与细胞再利用的各种实施例。 根据示例实施例，一种装置包括包括可变电路元件的第一电路。 第一电路适于在校准模式期间输出输出频率信号，并且在滤波器模式期间用作滤波器。 控制电路耦合到第一电路，并且适于接收参考频率信号并且通过在校准模式期间基于参考频率信号和输出频率信号调整可变电路元件来校准第一电路。 校准的第一电路被配置为在滤波器模式期间作为滤波器工作。

公开(公告)号：US07395098B2

公开(公告)日：2008-07-01

申请号：US11183446

申请日：2005-07-18

申请人： Hooman Darabi

发明人： Hooman Darabi

IPC分类号： H04B1/38 ,  H04M1/00

CPC分类号： H04W52/028 ,  Y02D70/122 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22

摘要： A bias filtering module with at least two capacitive levels satisfies both a settle time requirement and a filtering requirement using a voltage dependent filter module whose capacitance is a function of a voltage potential on the filtering circuitry output terminal. The final capacitance level is approximately three times larger than the initial capacitance level. MOS capacitors having a voltage dependent charge capacity within the bias filtering module are coupled between a plurality of bias lines and circuit common. In an alternate embodiment, a selectable first group of capacitors are switched into connection within the bias filtering module as a second group of capacitors approximately reach a fully charged state within a specified settle time to provide improved filtering.

摘要翻译： 具有至少两个电容电平的偏置滤波模块满足稳定时间要求和使用电压依赖滤波器模块的滤波要求，其电容是滤波电路输出端上的电压电位的函数。 最终电容电平大约是初始电容电平的三倍。 偏置滤波模块内具有与电压无关的电荷容量的MOS电容器耦合在多个偏置线和电路之间。 在替代实施例中，随着第二组电容器在指定的结算时间内大致达到完全充电状态，可选择的第一组电容器被切换成偏置滤波模块内的连接，以提供改进的滤波。

公开(公告)号：US20080146173A1

公开(公告)日：2008-06-19

申请号：US11638623

申请日：2006-12-13

申请人： Mohammad Nariman ,  Alireza Zolfaghari ,  Hooman Darabi

发明人： Mohammad Nariman ,  Alireza Zolfaghari ,  Hooman Darabi

IPC分类号： H04B7/00

CPC分类号： H04B1/0483

摘要： A radio frequency (RF) transmitter front-end includes a digital to analog conversion module and a power amplifier module. The digital to analog conversion module is coupled to convert amplitude information into analog amplitude adjust signals when a first mode is active and is coupled to convert power level information into analog power level signals when a second mode is active. The power amplifier module is coupled to amplify first phase modulated RF signals in accordance with the analog amplitude adjust signals to produce first outbound RF signals when the first mode is active and is coupled to amplify second phase modulated RF signals in accordance with the analog power level signals to produce second outbound RF signals when the second mode is active.

摘要翻译： 射频（RF）发射机前端包括数模转换模块和功率放大器模块。 当第一模式有效时，数模转换模块被耦合以将幅度信息转换为模拟幅度调整信号，并且当第二模式被激活时被耦合以将功率电平信息转换为模拟功率电平信号。 功率放大器模块被耦合以根据模拟幅度调整信号放大第一相位调制RF信号，以在第一模式有效时产生第一出站RF信号，并且被耦合以根据模拟功率电平放大第二相位调制RF信号 当第二模式有效时产生第二出站RF信号的信号。