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1. 发明申请

US20060094386A1 Method and system for a second order input intercept point (IIP2) calibration scheme 有权
标题翻译：二阶输入截点（IIP2）校准方案的方法和系统
公开(公告)号：US20060094386A1
公开(公告)日：2006-05-04
申请号：US10976976
申请日：2004-10-29
申请人： Hooman Darabi , Brima Ibrahim , Hea Kim
发明人： Hooman Darabi , Brima Ibrahim , Hea Kim
IPC分类号： H04B1/00 , H04B1/10
CPC分类号： H04L25/061 , H03D3/008 , H04B1/30 , H04L25/0272 , H04L25/0294 , H04L25/0296
摘要： In RF transceivers, a method and system for a second order input intercept point (IIP2) calibration scheme are provided. Transceiver calibration schemes to compensate for DC offsets produced by interfering signals may be performed during production testing or field operation. During production testing, an external source may inject a blocker signal that produces DC offsets in the receiver portion of the transceiver. A transceiver switch may be set to receive mode in this scheme. During field operation, a power amplifier in the transmitter portion of the transceiver may inject the blocker signal. In this scheme, the switch may be set to transmit mode and the DC offsets are produced by the portion of the injected blocker signal that leaks through the switch. In both schemes, a DC offset sensor detects DC offsets in the I/Q signal paths and may determine compensation currents which may be applied by injection circuits.
摘要翻译：在RF收发器中，提供了用于二阶输入截点（IIP2）校准方案的方法和系统。可以在生产测试或现场操作期间执行用于补偿由干扰信号产生的直流偏移的收发器校准方案。在生产测试期间，外部源可以注入在收发器的接收器部分中产生DC偏移的阻塞信号。可以在该方案中将收发器开关设置为接收模式。在场操作期间，收发器的发射器部分中的功率放大器可以注入阻塞信号。在该方案中，开关可以被设置为发送模式，并且DC偏移由注入的阻塞信号的部分通过开关泄漏产生。在两种方案中，DC偏移传感器检测I / Q信号路径中的直流偏移，并且可以确定可由注入电路施加的补偿电流。

2. 发明申请

US20060105735A1 Method and system for compensation of DC offset in an RF receiver 有权
公开(公告)号：US20060105735A1
公开(公告)日：2006-05-18
申请号：US10987977
申请日：2004-11-12
申请人： Brima Ibrahim , Hea Kim , Hooman Darabi
发明人： Brima Ibrahim , Hea Kim , Hooman Darabi
IPC分类号： H04B1/00
CPC分类号： H04L25/061 , H03D3/008 , H03F1/34 , H03F2200/336 , H03F2200/375 , H03G3/001 , H03G3/3068 , H04B1/30 , H04L25/063 , H04L27/0002 , H04L27/364 , H04L27/366
摘要： Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback signal based on the selected sampled data. The generated feedback signal may be fed back to at least one of a plurality of input paths, and at least one of the feedback signals may be of an opposite polarity to the selected sampled data. The selected sampled data may be converted to a digital sample, a plurality of the digital samples accumulated, and an average of the plurality of the digital samples calculated. A digital feedback value may be generated based on the average. A phase of the digital feedback value may be adjusted via a derotator, which may utilize the coordinate rotation digital computer (CORDIC) algorithm.

3. 发明授权

US07844230B2 Integrated multimode radio and components thereof 有权
标题翻译：集成多模无线电及其组件
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。

4. 发明申请

US20090264074A1 Integrated Multimode Radio and Components Thereof 有权
标题翻译：集成多模无线电及其组件
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。

5. 发明申请

US20070285154A1 ADAPTIVE RADIO TRANSCEIVER WITH FILTERING 有权
标题翻译：具有滤波功能的自适应无线收发器
公开(公告)号：US20070285154A1
公开(公告)日：2007-12-13
申请号：US11757014
申请日：2007-06-01
申请人： Hooman Darabi , Ahmadreza Rofougaran , Shahla Khorram , Brima Ibrahim
发明人： Hooman Darabi , Ahmadreza Rofougaran , Shahla Khorram , Brima Ibrahim
IPC分类号： H03K5/00
CPC分类号： H03L7/18 , H03B21/01 , H03B27/00 , H03F1/56 , H03F3/19 , H03F3/245 , H03F3/45179 , H03F3/45475 , H03F2200/318 , H03F2200/336 , H03F2200/451 , H03F2203/45138 , H03F2203/45386 , H03F2203/45526 , H03F2203/45528 , H03F2203/45638 , H03G3/001 , H03G11/00 , H03H7/42 , H03H11/1291 , H03H11/22 , H03H11/344 , H03H21/0001 , H03H21/0012 , H03H2011/0494 , H03J2200/10 , H03L7/099 , 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。

6. 发明授权

US06970681B2 Integrated multimode radio and components thereof 失效
标题翻译：集成多模无线电及其组件
公开(公告)号：US06970681B2
公开(公告)日：2005-11-29
申请号：US09993801
申请日：2001-11-14
申请人： Hooman Darabi , Brima Ibrahim , Ahmadreza Rofougaran
发明人： Hooman Darabi , Brima Ibrahim , Ahmadreza Rofougaran
IPC分类号： H04B1/40 , H04M1/00
CPC分类号： H04B1/0057 , 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。

7. 发明授权

US08301097B2 Method and system for low noise amplifier (LNA) gain adjustment through narrowband received signal strength indicator (NRSSI) 有权
标题翻译：通过窄带接收信号强度指示器（NRSSI）对低噪声放大器（LNA）增益调整的方法和系统
公开(公告)号：US08301097B2
公开(公告)日：2012-10-30
申请号：US12115263
申请日：2008-05-05
申请人： Hooman Darabi , Henrik T. Jensen , Brima Ibrahim
发明人： Hooman Darabi , Henrik T. Jensen , Brima Ibrahim
IPC分类号： H04B1/06 , H04B7/00
CPC分类号： H03G1/007 , H03G3/3063 , H03G2201/103 , H03G2201/202 , H03G2201/307
摘要： A method for processing a plurality of signals may include amplifying an input signal and generating a wideband signal from the amplified input signal. The method may further include bandpass filtering the generated wideband signal to generate a narrowband signal, and adjusting amplification of the input signal based on a narrowband received signal strength indication of the generated narrowband signal, and/or a wideband received signal strength indication of the generated wideband signal. The amplified input signal may be downconverted to generate the wideband signal. The amplified input signal may be downconverted to an intermediate frequency (IF) and/or to a baseband signal to generate the wideband signal. At least one blocker signal may be bandpass filtered from the amplified input signal.
摘要翻译：用于处理多个信号的方法可以包括放大输入信号并从放大的输入信号产生宽带信号。该方法还可以包括对生成的宽带信号进行带通滤波以产生窄带信号，以及基于所生成的窄带信号的窄带接收信号强度指示和/或所生成的宽带信号强度指示来调整输入信号的放大宽带信号。放大的输入信号可以被下变频以产生宽带信号。放大的输入信号可以下变频到中频（IF）和/或基带信号以产生宽带信号。至少一个阻塞信号可以从放大的输入信号进行带通滤波。

8. 发明授权

US08019309B2 Method and system for a second order input intercept point (IIP2) calibration scheme 有权
标题翻译：二阶输入截点（IIP2）校准方案的方法和系统
公开(公告)号：US08019309B2
公开(公告)日：2011-09-13
申请号：US10976976
申请日：2004-10-29
申请人： Hooman Darabi , Brima Ibrahim , Hea Joung Kim
发明人： Hooman Darabi , Brima Ibrahim , Hea Joung Kim
IPC分类号： H04B1/10
CPC分类号： H04L25/061 , H03D3/008 , H04B1/30 , H04L25/0272 , H04L25/0294 , H04L25/0296
摘要： In RF transceivers, a method and system for a second order input intercept point (IIP2) calibration scheme are provided. Transceiver calibration schemes to compensate for DC offsets produced by interfering signals may be performed during production testing or field operation. During production testing, an external source may inject a blocker signal that produces DC offsets in the receiver portion of the transceiver. A transceiver switch may be set to receive mode in this scheme. During field operation, a power amplifier in the transmitter portion of the transceiver may inject the blocker signal. In this scheme, the switch may be set to transmit mode and the DC offsets are produced by the portion of the injected blocker signal that leaks through the switch. In both schemes, a DC offset sensor detects DC offsets in the I/Q signal paths and may determine compensation currents which may be applied by injection circuits.
摘要翻译：在RF收发器中，提供了用于二阶输入截点（IIP2）校准方案的方法和系统。可以在生产测试或现场操作期间执行用于补偿由干扰信号产生的直流偏移的收发器校准方案。在生产测试期间，外部源可以注入在收发器的接收器部分中产生DC偏移的阻塞信号。可以在该方案中将收发器开关设置为接收模式。在场操作期间，收发器的发射器部分中的功率放大器可以注入阻塞信号。在该方案中，开关可以被设置为发送模式，并且DC偏移由注入的阻塞信号的部分通过开关泄漏产生。在两种方案中，DC偏移传感器检测I / Q信号路径中的直流偏移，并且可以确定可由注入电路施加的补偿电流。

9. 发明申请

US20110039505A1 INTEGRATED MULTIMODE RADIO TRANSMITTER AND COMPONENTS THEREOF 有权
标题翻译：集成多模无线电发射机及其组件
公开(公告)号：US20110039505A1
公开(公告)日：2011-02-17
申请号：US12914278
申请日：2010-10-28
申请人： Hooman Darabi , Brima Ibrahim , Ahmadreza Rofougaran
发明人： Hooman Darabi , Brima Ibrahim , Ahmadreza Rofougaran
IPC分类号： H04B1/04
CPC分类号： H04B1/406
摘要： An integrated multi-mode radio transmitter includes a multiplexor and a shared front-end. The is operable to select an IF signal of a plurality of IF signals based upon a selection signal that is indicative of a particular operational mode of the one of the plurality of IF signals. The shared front-end is coupled to receive the selected IF signal, wherein the shared front-end converts the selected IF signal into a radio frequency (RF) signal that is modulated in accordance with the particular operational mode of the one of the plurality of IF stages.
摘要翻译：集成的多模式无线电发射机包括多路复用器和共享前端。可操作以基于指示多个IF信号之一的特定操作模式的选择信号来选择多个IF信号的IF信号。共享前端被耦合以接收所选择的IF信号，其中共享前端将所选择的IF信号转换成根据多个信号中的一个的特定操作模式被调制的射频（RF）信号 IF阶段。

10. 发明授权

US07840202B2 Method and system for compensation of DC offset in an RF receiver 有权
标题翻译：用于补偿RF接收机中直流偏移的方法和系统
公开(公告)号：US07840202B2
公开(公告)日：2010-11-23
申请号：US12268957
申请日：2008-11-11
申请人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
发明人： Brima Ibrahim , Hea Joung Kim , Hooman Darabi
IPC分类号： H04B1/06
CPC分类号： H04L25/061 , H03D3/008 , H03F1/34 , H03F2200/336 , H03F2200/375 , H03G3/001 , H03G3/3068 , H04B1/30 , H04L25/063 , H04L27/0002 , H04L27/364 , H04L27/366
摘要： System and method for processing signals are disclosed. The method may include converting, in an RF receiver, one or more analog samples, which are selected from one of a plurality of output paths of the RF receiver, to one or more digital samples. A digital feedback value may be generated based on an average of the one or more converted digital samples. A scaled version of the generated digital feedback value may be converted to an analog value. The converted analog value may be fed back to one or more of a plurality of input paths of the RF receiver. The one or more analog samples may be selected from among a plurality of output analog samples from the plurality of output paths of the RF receiver.
摘要翻译：公开了用于处理信号的系统和方法。该方法可以包括在RF接收机中将从RF接收机的多个输出路径中的一个中选择的一个或多个模拟样本转换成一个或多个数字样本。可以基于一个或多个转换的数字样本的平均值来生成数字反馈值。生成的数字反馈值的缩放版本可以被转换为模拟值。转换的模拟值可以被反馈到RF接收机的多个输入路径中的一个或多个。可以从RF接收机的多个输出路径的多个输出模拟采样中选择一个或多个模拟采样。

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