公开(公告)号：US20110299632A1

公开(公告)日：2011-12-08

申请号：US13076183

申请日：2011-03-30

Applicant: Ahmad Mirzaei ,  Hooman Darabi

Inventor： Ahmad Mirzaei ,  Hooman Darabi

IPC: H04L27/06

CPC classification number: H04B1/10 ,  H03F1/083 ,  H03F3/45179 ,  H04B1/006 ,  H04B1/1638 ,  H04B1/28 ,  H04B1/401

Abstract: A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes a frequency translated bandpass filter (FTBPF), an LNA, and a mixing section. The FTBPF includes a switching network and a plurality of baseband impedances. The switching network is operable to couple the plurality of baseband impedances to the FEM interface in accordance with a plurality of phase-offset RF clock signals to RF bandpass filter the inbound RF signal. The LNA amplifies the filtered inbound RF signal and the mixing section mixes the amplified inbound RF signal with a local oscillation to produce an inbound IF signal. The receiver IF to baseband section converts the inbound IF signal into one or more inbound symbol streams.

Abstract translation: 无SAW接收机包括FEM接口模块，RF至IF接收机部分和接收机IF到基带部分。 RF至IF接收器部分包括频率转换带通滤波器（FTBPF），LNA和混频部分。 FTBPF包括交换网络和多个基带阻抗。 交换网络可操作以根据多个相位偏移RF时钟信号将多个基带阻抗耦合到FEM接口，以对入站RF信号进行RF带通滤波。 LNA放大滤波的入站RF信号，混合部分将放大的入站RF信号与本地振荡混频，以产生入站IF信号。 接收机IF到基带部分将入站IF信号转换成一个或多个入站符号流。

公开(公告)号：US20110299631A1

公开(公告)日：2011-12-08

申请号：US13076143

申请日：2011-03-30

Applicant: Ahmad Mirzaei ,  Hooman Darabi

Inventor： Ahmad Mirzaei ,  Hooman Darabi

IPC: H04L27/06

CPC classification number: H04L27/36

Abstract: A SAW-less receiver includes an FEM interface module, an RF to IF receiver section, and a receiver IF to baseband section. The RF to IF receiver section includes inverter based LNA modules, a mixing module, and transimpedance amplifier modules. The inverter based LNA modules amplify inbound RF signal to produce a positive leg current RF signal and a negative leg current RF signal. The mixing module converts the positive and negative leg current RF signals into an in-phase (I) mixed current signal and a quadrature (Q) mixed current signal. The transimpedance amplifier modules convert the I mixed current signal into an I mixed voltage signal and the Q mixed current signal into a Q mixed voltage signal. The receiver IF to baseband section converts the I and Q mixed voltage signals into one or more inbound symbol streams.

Abstract translation: 无SAW接收机包括FEM接口模块，RF至IF接收机部分和接收机IF到基带部分。 RF至IF接收器部分包括基于反相器的LNA模块，混频模块和跨阻放大器模块。 基于逆变器的LNA模块放大入站RF信号以产生正脚电流RF信号和负脚电流RF信号。 混合模块将正极和负极脚电流RF信号转换为同相（I）混合电流信号和正交（Q）混合电流信号。 跨阻放大器模块将​​I混合电流信号转换为I混合电压信号，将Q混合电流信号转换为Q混合电压信号。 接收机IF到基带部分将I和Q混合电压信号转换成一个或多个入站符号流。

公开(公告)号：US20110299437A1

公开(公告)日：2011-12-08

申请号：US12946688

申请日：2010-11-15

Applicant: Mohyee Mikhemar ,  Hooman Darabi

Inventor： Mohyee Mikhemar ,  Hooman Darabi

IPC: H04B7/005

CPC classification number: H04B1/582 ,  H04B1/0458 ,  H04B1/48

Abstract: A front end module includes a duplexer and a balancing network. The duplexer includes a compensation circuit and a transformer three windings having five nodes. The first node for operably coupling an antenna to the first winding; the second node operable to receive an outbound wireless signal and operably couples the first winding to the second winding; the third node operably couples the second winding to a balancing network; the fourth node operably coupled to output a first signal component corresponding to an inbound wireless signal from the third winding; and the fifth node operably coupled to output a second signal component corresponding to an inbound wireless signal from the third winding. The duplexer provides electrical isolation between the first and second signal components and the outbound wireless signal. The compensation module is operable to compensate the electrical isolation between the first and second signals and the outbound wireless signal.

Abstract translation: 前端模块包括双工器和平衡网络。 双工器包括补偿电路和变压器三个具有五个节点的绕组。 用于将天线可操作地耦合到第一绕组的第一节点; 所述第二节点可操作以接收出站无线信号并将所述第一绕组可操作地耦合到所述第二绕组; 第三节点将第二绕组可操作地耦合到平衡网络; 所述第四节点可操作地耦合以输出对应于来自所述第三绕组的入站无线信号的第一信号分量; 并且第五节点可操作地耦合以输出对应于来自第三绕组的入站无线信号的第二信号分量。 双工器提供第一和第二信号分量与出站无线信号之间的电气隔离。 补偿模块可用于补偿第一和第二信号与出站无线信号之间的电隔离。

公开(公告)号：US07990216B2

公开(公告)日：2011-08-02

申请号：US12474021

申请日：2009-05-28

Applicant: Yuyu Chang ,  Hooman Darabi

Inventor： Yuyu Chang ,  Hooman Darabi

IPC: H03F3/45

CPC classification number: 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

Abstract: 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.

Abstract translation: 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：US20110143822A1

公开(公告)日：2011-06-16

申请号：US13033289

申请日：2011-02-23

Applicant: Yuyu Chang ,  Hooman Darabi

Inventor： Yuyu Chang ,  Hooman Darabi

IPC: H04W88/02

CPC classification number: H03F3/195 ,  H03F3/45188 ,  H03F2203/45316 ,  H03F2203/45384 ,  H03F2203/45392 ,  H03F2203/45481 ,  H03F2203/45638

Abstract: Fully integrated compact cross-coupled low noise amplifier. 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. 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 differential 100Ω input impedance is provided by this design. A higher than typical power supply voltage can be employed (if desired) to accommodate one possible implementation that includes two parallel implemented resistors to ground.

Abstract translation: 全集成紧凑型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。 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。 差分100＆OHgr; 输入阻抗由本设计提供。 可以采用高于典型的电源电压（如果需要）以适应包括两个并联实现的接地电阻的一种可能的实现。

公开(公告)号：US07929939B2

公开(公告)日：2011-04-19

申请号：US12056493

申请日：2008-03-27

Applicant: Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Hooman Darabi ,  Vafa James Rakshani ,  Claude G. Hayek

Inventor： Ahmadreza (Reza) Rofougaran ,  Maryam Rofougaran ,  Hooman Darabi ,  Vafa James Rakshani ,  Claude G. Hayek

IPC: H04B1/28

CPC classification number: H04B1/406

Abstract: An RFIC includes first and second RF sections, first and second PHY processing modules, first and second upper layer processing modules, and memory. When the RFIC is in a first receive mode, the first RF section, the first PHY processing module, and the first upper layers processing module convert a first inbound RF signal into a first inbound audio signal in accordance with a first wireless communication protocol. When the RFIC is in a second receive mode, the second RF section, the second PHY processing module, and the second upper layers processing module convert a second inbound RF signal into a second inbound audio signal in accordance with a second wireless communication protocol. The memory stores the first and second inbound audio signals. The first PHY processing module retrieves, based on the receive mode, the first or second inbound audio signal from the memory and converts the first or second inbound audio signal into a first or second inbound analog audio signal.

Abstract translation: RFIC包括第一和第二RF部分，第一和第二PHY处理模块，第一和第二上层处理模块以及存储器。 当RFIC处于第一接收模式时，第一RF部分，第一PHY处理模块和第一上层处理模块根据第一无线通信协议将第一入站RF信号转换成第一入站音频信号。 当RFIC处于第二接收模式时，第二RF部分，第二PHY处理模块和第二上层处理模块根据第二无线通信协议将第二入站RF信号转换成第二入站音频信号。 存储器存储第一和第二入站音频信号。 第一PHY处理模块基于接收模式检索来自存储器的第一或第二入站音频信号，并将第一或第二入站音频信号转换为第一或第二入站模拟音频信号。

公开(公告)号：US07899423B2

公开(公告)日：2011-03-01

申请号：US12405949

申请日：2009-03-17

Applicant: Hooman Darabi ,  John Leete

Inventor： Hooman Darabi ,  John Leete

IPC: H04B1/40

CPC classification number: H04B1/406

Abstract: A method for processing signals is disclosed and may include performing using one or more circuits in a multiband radio, functions including receiving an input signal from an oscillator that generates signals for each of a plurality of bands handled by the multiband radio. The received input signal may be divided. A feedback loop reference signal may be generated from the input signal. A coarse calibration signal and/or a fine calibration signal may be generated from the generated feedback loop reference signal. The oscillator may be calibrated utilizing the coarse calibration signal and/or the fine calibration signal. The input signal generated by the oscillator may be between about 3.4 GHz and 4 GHz. The receive input signal may be buffered. The generated feedback loop reference signal may also be buffered.

Abstract translation: 公开了一种用于处理信号的方法，并且可以包括使用多频无线电中的一个或多个电路来执行功能，其功能包括从由多频带无线电处理的多个频带中的每个频带生成信号的振荡器接收输入信号。 所接收的输入信号可以被划分。 可以从输入信号产生反馈回路参考信号。 可以从产生的反馈回路参考信号产生粗略校准信号和/或精细校准信号。 可以使用粗校准信号和/或精细校准信号校准振荡器。 由振荡器产生的输入信号可以在约3.4GHz和4GHz之间。 可以缓冲接收输入信号。 产生的反馈回路参考信号也可以被缓冲。

公开(公告)号：US20110028115A1

公开(公告)日：2011-02-03

申请号：US12461069

申请日：2009-07-30

Applicant: Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

Inventor： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC: H04B1/26

CPC classification number: H04B1/28 ,  H04B1/123

Abstract: A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF) to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer is used to frequency translate a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter characterized as the low Q filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer is used to frequency translate a communication signal using a second local oscillator signal, the second local oscillator signal being substantially similar in frequency of the first local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.

Abstract translation: 公开了一种方法和装置，以有效地频率转换滤波器，其特征在于对应于大约零赫兹的基带频率的低质量因子（Q）滤波器或者将中频（IF）调频到以频率为高Q滤波器的滤波器 大于基带频率或IF。 下变频混频器用于使用第一本地振荡器信号将通信信号频率转换为基带频率或IF，以提供经下变频的通信信号。 滤波器，其特征在于对应于基带频率的低Q滤波器或IF对下变频通信信号进行滤波以提供经滤波的通信信号。 使用上变频混频器使用第二本地振荡器信号对通信信号进行频率转换，第二本地振荡器信号在第一本机振荡器信号的频率上基本相似。 通过上变频混频器进行的频率转换实际上将滤波器特性从低Q滤波器转换为高于基带频率或IF的频率的高Q滤波器。

公开(公告)号：US20110025436A1

公开(公告)日：2011-02-03

申请号：US12546397

申请日：2009-08-24

Applicant: Amir Hadji-Abdolhamid ,  Hooman Darabi

Inventor： Amir Hadji-Abdolhamid ,  Hooman Darabi

IPC: H03J5/24

CPC classification number: H03J5/24 ,  H03J2200/10

Abstract: Embodiments of a capacitive tuning system implementing a tunable capacitive array are presented herein. The tunable capacitive array includes both scaled coarse capacitors and one or more fine capacitors. The one or more fine capacitors advantageously reduce a differential nonlinearity associated with the scaled coarse capacitors. The use of fine capacitors limits additional area requirements in an integrated circuit implementation, while improving the accuracy of the capacitive tuning system.

Abstract translation: 本文给出了实现可调谐电容阵列的电容调谐系统的实施例。 可调电容阵列包括缩放粗略电容器和一个或多个精细电容器。 一个或多个精细电容器有利地降低与缩放的粗糙电容器相关联的差分非线性。 精细电容器的使用在集成电路实现中限制了额外的面积要求，同时提高了电容调谐系统的精度。

公开(公告)号：US20100329392A1

公开(公告)日：2010-12-30

申请号：US12535484

申请日：2009-08-04

Applicant: Henrik Jensen ,  Hooman Darabi

Inventor： Henrik Jensen ,  Hooman Darabi

IPC: H04L27/22

CPC classification number: H04L27/3863

Abstract: A method and apparatus is disclosed to compensate for an in-phase/quadrature phase (I/Q) imbalance in a communications receiver. The communications receiver may utilize information gained from observing one or more observational interferers to adjust one or more sequence parameters, such as gain and/or phase to provide some examples. The one or more observational interferers including one or more images outside of a desired frequency band of interest. The communications receiver provides one or more sequence parameter values to allow for real-time adjustment of the sequence parameters to compensate for the I/Q imbalances.

Abstract translation: 公开了一种用于补偿通信接收机中的同相/正交相位（I / Q）不平衡的方法和装置。 通信接收机可以利用从观察一个或多个观测干扰源获得的信息来调整一个或多个序列参数，例如增益和/或相位以提供一些示例。 所述一个或多个观察性干扰源包括期望的感兴趣频带之外的一个或多个图像。 通信接收机提供一个或多个序列参数值以允许对序列参数的实时调整以补偿I / Q不平衡。