公开(公告)号：US07899423B2

公开(公告)日：2011-03-01

申请号：US12405949

申请日：2009-03-17

申请人： Hooman Darabi ,  John Leete

发明人： Hooman Darabi ,  John Leete

IPC分类号： H04B1/40

CPC分类号： H04B1/406

摘要： 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.

摘要翻译： 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

申请人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

发明人： Ahmad Mirzaei ,  Mohyee Mikhemar ,  Hooman Darabi

IPC分类号： H04B1/26

CPC分类号： H04B1/28 ,  H04B1/123

摘要： 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.

摘要翻译： 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

申请人： Amir Hadji-Abdolhamid ,  Hooman Darabi

发明人： Amir Hadji-Abdolhamid ,  Hooman Darabi

IPC分类号： H03J5/24

CPC分类号： H03J5/24 ,  H03J2200/10

摘要： 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.

摘要翻译： 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

申请人： Henrik Jensen ,  Hooman Darabi

发明人： Henrik Jensen ,  Hooman Darabi

IPC分类号： H04L27/22

CPC分类号： H04L27/3863

摘要： 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.

摘要翻译： 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。

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：US20100295598A1

公开(公告)日：2010-11-25

申请号：US12782405

申请日：2010-05-18

申请人： Hooman Darabi ,  Ahmadreza Rofougaran ,  Maryam Rofougaran

发明人： Hooman Darabi ,  Ahmadreza Rofougaran ,  Maryam Rofougaran

IPC分类号： G06G7/12

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

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：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。