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1. 发明申请

US20070054629A1 PARTITIONING OF RADIO-FREQUENCY APPARATUS 有权
标题翻译：无线电频率设备的分配
公开(公告)号：US20070054629A1
公开(公告)日：2007-03-08
申请号：US10730404
申请日：2003-12-08
申请人： James Maligeorgos , Augusto Marques , Lysander Lim , G. Tuttle , Aslamali Rafi , Tod Paulus , Gregory Uehara , Jeffrey Scott , Richard Behrens , Donald Kerth , G. Vishakhadatta , Vishnu Srinivasan , Caiyi Wang
发明人： James Maligeorgos , Augusto Marques , Lysander Lim , G. Tuttle , Aslamali Rafi , Tod Paulus , Gregory Uehara , Jeffrey Scott , Richard Behrens , Donald Kerth , G. Vishakhadatta , Vishnu Srinivasan , Caiyi Wang
IPC分类号： H04B1/38
CPC分类号： H04B1/30 , H03J2200/10 , H04L27/0002
摘要： Components of a radio-frequency (RF) apparatus including transceiver circuitry and frequency modification circuitry of a crystal oscillator circuit that generates a reference signal with adjustable frequency may be partitioned in a variety of ways, for example, as one or more separate integrated circuits. The frequency modification circuitry may be implemented as part of a crystal oscillator circuit that includes digitally controlled crystal oscillator (“DCXO”) circuitry and a crystal. The frequency modification circuitry may include at least one variable capacitance device and may be employed to generate a reference signal with adjustable frequency. The adjustable reference signal may be provided to other components of the RF apparatus and/or the RF apparatus may be configured to provide the adjustable reference signal to baseband processor circuitry. Automatic frequency control (AFC) circuitry may be integrated with other components of RF circuitry and may generate frequency control signals for the frequency modification circuitry based on, for example, a signal received from a temperature sensor. Digital-to-analog converter (DAC) circuitry may be integrated with other components of RF circuitry to enable all-digital frequency control communications from baseband processor circuitry to RF circuitry.
摘要翻译：包括生成具有可变频率的参考信号的晶体振荡器电路的收发器电路和频率修改电路的射频（RF）设备的组件可以以各种方式被划分，例如作为一个或多个单独的集成电路。频率修改电路可以被实现为包括数字控制的晶体振荡器（“DCXO”）电路和晶体的晶体振荡器电路的一部分。频率修改电路可以包括至少一个可变电容器件，并且可以用于产生具有可调频率的参考信号。可调参考信号可以被提供给RF装置的其他部件，和/或RF装置可以被配置为向基带处理器电路提供可调参考信号。自动频率控制（AFC）电路可以与RF电路的其它组件集成，并且可以基于例如从温度传感器接收的信号来生成用于频率修改电路的频率控制信号。数模转换器（DAC）电路可以与RF电路的其他部件集成，以实现从基带处理器电路到RF电路的全数字频率控制通信。

2. 发明申请

US20060141973A1 Digital architecture for radio-frequency apparatus and associated methods 有权
公开(公告)号：US20060141973A1
公开(公告)日：2006-06-29
申请号：US11287995
申请日：2005-11-28
申请人： Richard Behrens , Tod Paulus , Mark Spurbeck , Vishnu Srinivasan , Donald Kerth , Jeffrey Scott , G. Tuttle , G. Vishakhadatta
发明人： Richard Behrens , Tod Paulus , Mark Spurbeck , Vishnu Srinivasan , Donald Kerth , Jeffrey Scott , G. Tuttle , G. Vishakhadatta
IPC分类号： H04B1/26 , H04B1/28
CPC分类号： H04B1/28 , H04B1/0003 , H04B1/38 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064
摘要： A radio-frequency (RF) receiver includes a receiver analog circuitry and a receiver digital circuitry. The receiver analog circuitry resides within a first integrated circuit and the receiver digital circuitry resides within a second integrated circuit. The second integrated circuit couples to the first integrated circuit via a one-bit digital interface. The receiver analog circuitry receives an RF signal and processes the received RF signal to generate a digital signal. The receiver analog circuitry provides the digital signal to the receiver digital circuitry. The receiver digital circuitry includes a digital down-converter circuitry that mixes the digital signal with an intermediate frequency (IF) local oscillator (LO) signal to generate a digital down-converted signal. The receiver digital circuitry also includes a digital filter circuitry that filters the digital down-converted signal to generate a filtered digital signal.

3. 发明申请

US20050003762A1 Partitioned radio-frequency apparatus and associated methods 有权
标题翻译：分频射频设备及相关方法
公开(公告)号：US20050003762A1
公开(公告)日：2005-01-06
申请号：US10878880
申请日：2004-06-28
申请人： Donald Kerth , Richard Behrens , Jeffrey Scott , G. Vishakhadatta , G. Tuttle , Vishnu Srinivasan
发明人： Donald Kerth , Richard Behrens , Jeffrey Scott , G. Vishakhadatta , G. Tuttle , Vishnu Srinivasan
IPC分类号： H04B1/28 , H04B1/40 , H04B15/02 , H04B15/04 , H04B1/10
CPC分类号： H04B1/109 , H04B1/0003 , H04B1/28 , H04B1/406 , H04B15/02 , H04B15/04 , H04B2215/064 , H04L27/2649
摘要： Radio-frequency (RF) apparatus includes receiver analog circuitry that receives an RF signal and provides at least one digital signal to receiver digital circuitry that functions in cooperation with the receiver analog circuitry. The receiver analog circuitry and the receiver digital circuitry are partitioned so that interference effects between the receiver analog circuitry and the receiver digital circuitry tend to be reduced.
摘要翻译：射频（RF）设备包括接收模拟电路，其接收RF信号并且向与接收机模拟电路协作起作用的接收机数字电路提供至少一个数字信号。接收机模拟电路和接收机数字电路被分割，使得接收机模拟电路和接收机数字电路之间的干扰效应趋于降低。

4. 发明申请

US20060178122A1 Interchangeable receive inputs for band and system swappability in communication systems and related methods 有权
标题翻译：通信系统中的频带和系统可交换的可互换接收输入及相关方法
公开(公告)号：US20060178122A1
公开(公告)日：2006-08-10
申请号：US11231182
申请日：2005-09-20
申请人： Vishnu Srinivasan , Gary Levy , Brett Mitchelson , Donald Kerth , Eric Garlepp , G. Tyson Tuttle
发明人： Vishnu Srinivasan , Gary Levy , Brett Mitchelson , Donald Kerth , Eric Garlepp , G. Tyson Tuttle
IPC分类号： H04B1/18
CPC分类号： H04B1/006
摘要： Interchangeable high band low-noise-amplifiers (LNAs) and low band low-noise-amplifiers (LNAs) and related methods are disclosed that greatly enhance the efficiency of designing handsets for different combinations of frequency bands. The input signals to particular pins on a receiver or transceiver integrated circuit (IC) are swappable such that multiple frequency bands can be input to the same input pins thereby allowing for simplified system design. Efficient programmable techniques are also disclosed for controlling a swap mode within communication ICs. These interchangeable or band swappable input paths, for example, can be utilized to allow interchangeability between high band (PCS, DCS) and low band (GSM, E-GSM) inputs for cellular communications. In this way, for example, handset manufacturers can build a single printed circuit board (PCB) that can be utilized for cellular communications in the United States of America, where 850 MHz (GSM) and 1900 MHz (PCS) bands are utilized, and in Europe, wherein 900 MHz (E-GSM) and 1800 MHz (DCS) bands are utilized.
摘要翻译：公开了可互换的高频带低噪声放大器（LNA）和低频带低噪声放大器（LNA）及相关方法，这大大提高了针对不同频带组合设计手机的效率。接收器或收发器集成电路（IC）上的特定引脚的输入信号是可交换的，使得可以将多个频带输入到相同的输入引脚，从而允许简化的系统设计。还公开了用于控制通信IC内的交换模式的高效可编程技术。例如，这些可互换或频带可交换的输入路径可用于允许用于蜂窝通信的高频带（PCS，DCS）和低频（GSM，E-GSM）输入之间的互换性。以这种方式，例如，手机制造商可以构建可用于在美国使用850MHz（GSM）和1900MHz（PCS）频带的美国的蜂窝通信的单个印刷电路板（PCB），以及在欧洲，其中使用900MHz（E-GSM）和1800MHz（DCS）频带。

5. 发明申请

US20070004359A1 Peak detector 有权
标题翻译：峰值检测器
公开(公告)号：US20070004359A1
公开(公告)日：2007-01-04
申请号：US11172477
申请日：2005-06-30
申请人： Vishnu Srinivasan , G. Tuttle
发明人： Vishnu Srinivasan , G. Tuttle
IPC分类号： H04B1/06
CPC分类号： H03G3/3068
摘要： A receiver includes a gain stage, a peak detector and a processor. The gain stage provides an output signal, and the peak detector provides a binary indication of whether the output signal has reached a predetermined threshold. The processor controls the gain stage in response to the binary indication.
摘要翻译：接收机包括增益级，峰值检测器和处理器。增益级提供输出信号，峰值检测器提供输出信号是否达到预定阈值的二进制指示。处理器响应于二进制指示来控制增益级。

6. 发明申请

US20110074509A1 NON-LINEAR CAPACITANCE COMPENSATION 有权
标题翻译：非线性电容补偿
公开(公告)号：US20110074509A1
公开(公告)日：2011-03-31
申请号：US12889890
申请日：2010-09-24
申请人： ANIL SAMAVEDAM , David E. Bockelman , Vishnu Srinivasan , Eric Kimball
发明人： ANIL SAMAVEDAM , David E. Bockelman , Vishnu Srinivasan , Eric Kimball
IPC分类号： H03F3/45 , H03F3/60
CPC分类号： H03G3/00 , H03F1/086 , H03F1/14 , H03F3/19 , H03F3/245 , H03F3/3022 , H03F2200/451 , H03F2203/30144
摘要： Embodiments are directed to capacitance compensation via a compensation device coupled to a gain device to compensate for a capacitance change occurring due to an input signal change, along with a controller coupled to the compensation device to receive the input signal and to control an amount of compensation based on the input signal. In some embodiments, banks may be formed of multiple compensation devices, where each of the banks has a different size and is coupled to receive a different set of bias voltages.
摘要翻译：实施例涉及通过耦合到增益器件的补偿器件的电容补偿，以补偿由于输入信号变化而发生的电容变化，连同耦合到补偿器件的控制器接收输入信号并控制补偿量基于输入信号。在一些实施例中，存储体可以由多个补偿装置形成，其中每个存储体具有不同的尺寸并被耦合以接收不同的一组偏置电压。

7. 发明申请

US20100085119A1 Generating A Process And Temperature Tracking Bias Voltage 有权
标题翻译：生成工艺和温度跟踪偏置电压
公开(公告)号：US20100085119A1
公开(公告)日：2010-04-08
申请号：US12578838
申请日：2009-10-14
申请人： Anil Samavedam , David E. Bockelman , Vishnu Srinivasan
发明人： Anil Samavedam , David E. Bockelman , Vishnu Srinivasan
IPC分类号： H03G3/10
CPC分类号： H03F1/3205 , H03F1/301 , H03F3/19 , H03F3/245 , H03F3/3022 , H03F2200/447 , H03F2200/451 , H03F2203/30144
摘要： In one embodiment, a method includes generating a current that is proportional to a mobility and an oxide capacitance of a tracking device and independent of a threshold voltage variation of the tracking device, generating a voltage from the current, and providing the voltage as at least part of a bias voltage for another device. In one embodiment, this other device may be a compensation circuit coupled to a main device to compensate for capacitance non-linearity of the main device.
摘要翻译：在一个实施例中，一种方法包括产生与跟踪装置的迁移率和氧化物电容成比例的电流，并且不依赖于跟踪装置的阈值电压变化，从电流产生电压，并将电压提供至少另一个器件偏置电压的一部分。在一个实施例中，该另一个器件可以是耦合到主器件的补偿电路，以补偿主器件的电容非线性。

8. 发明申请

US20090256631A1 Providing pre-distortion to an input signal 有权
标题翻译：为输入信号提供预失真
公开(公告)号：US20090256631A1
公开(公告)日：2009-10-15
申请号：US12082311
申请日：2008-04-10
申请人： David E. Bockelman , Vishnu Srinivasan
发明人： David E. Bockelman , Vishnu Srinivasan
IPC分类号： H03F1/26
CPC分类号： H03F1/3276 , H03F1/3211 , H03F3/211 , H03F3/245 , H03F3/45475 , H03F2200/451 , H03F2200/537 , H03F2203/45138
摘要： In one implementation, the present invention includes a diode device to receive an incoming radio frequency (RF) signal to be amplified in a gain device of an amplifier and to provide a pre-distorted signal. Based on this pre-distorted signal, the gain device can output an amplified RF signal having substantial linearity to the incoming RF signal.
摘要翻译：在一个实现中，本发明包括一个二极管器件，用于接收在放大器的增益器件中放大的输入射频（RF）信号，并提供预失真信号。基于该预失真信号，增益器件可以输出对输入RF信号具有大量线性的放大RF信号。

9. 发明申请

US20070060066A1 System and method for preventing performance degradation in communication circuitry 审中-公开
标题翻译：防止通信电路性能下降的系统和方法
公开(公告)号：US20070060066A1
公开(公告)日：2007-03-15
申请号：US11226837
申请日：2005-09-14
申请人： Vishnu Srinivasan
发明人： Vishnu Srinivasan
IPC分类号： H04Q7/32
CPC分类号： H04B1/525 , H04B1/406
摘要： A system comprising first interface circuitry that includes a first input pad of first receiver circuitry, and control circuitry configured to operate the first interface circuitry in a first mode to prevent the first receiver circuitry from receiving a first signal using the first input pad and a second mode to allow the first receiver circuitry to receive a second signal using the first input pad is provided.
摘要翻译：一种包括第一接口电路的系统，包括第一接收器电路的第一输入焊盘，以及配置成以第一模式操作第一接口电路的控制电路，以防止第一接收器电路使用第一输入焊盘接收第一信号，提供允许第一接收机电路使用第一输入焊盘接收第二信号的模式。

10. 发明授权

US07768350B2 Output gain stage for a power amplifier 有权
标题翻译：功率放大器的输出增益级
公开(公告)号：US07768350B2
公开(公告)日：2010-08-03
申请号：US12317819
申请日：2008-12-30
申请人： Vishnu Srinivasan , David E. Bockelman
发明人： Vishnu Srinivasan , David E. Bockelman
IPC分类号： H03F3/45
CPC分类号： H03F3/45183 , H03F3/211 , H03F2200/537
摘要： In one embodiment, the present invention includes multiple gain stages to receive and amplify a differential input signal at different common mode voltages. The stages each may include a pair of linear NMOS gain transistors coupled to a primary coil of a given output transformer. One of the stages may include commonly coupled terminals coupled to a center tap of the primary coil of an output transformer of another stage, and a supply current provided to one of the stages is re-used for the other stage(s).
摘要翻译：在一个实施例中，本发明包括多个增益级，以在不同的共模电压下接收和放大差分输入信号。这些级可以包括耦合到给定输出变压器的初级线圈的一对线性NMOS增益晶体管。一个级可以包括耦合到另一级的输出变压器的初级线圈的中心抽头的共同耦合的端子，并且提供给一个级的电源电流被重新用于其它级。

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