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1. 发明授权

US07471226B2 Radio frequency digital-to-analog converter 有权
标题翻译：射频数模转换器
公开(公告)号：US07471226B2
公开(公告)日：2008-12-30
申请号：US11452183
申请日：2006-06-13
申请人： Steven R. Norsworthy , Andrew Tham , Jason Rupert Redgrave , Aubrey Arthur Grey
发明人： Steven R. Norsworthy , Andrew Tham , Jason Rupert Redgrave , Aubrey Arthur Grey
IPC分类号： H03M1/66
CPC分类号： H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
摘要： A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.
摘要翻译：具有可编程电流输出的射频数模转换器。在本发明的示例性方面，提供了用于提供（i）电流镜匹配，（ii）增强的电流脉冲上升沿性能，（ii）降低的基极电压摆幅和（iv）补偿的高电压摆幅）的改进的装置和方法。上述装置和方法可以应用于任何RF信号应用（无线或其他），包括例如无线蜂窝手机。

2. 发明授权

US07276966B1 Radio frequency envelope apparatus and method 有权
标题翻译：射频信封装置及方法
公开(公告)号：US07276966B1
公开(公告)日：2007-10-02
申请号：US10978015
申请日：2004-10-28
申请人： Andrew Tham , Steven R. Norsworthy , Jason Rupert Redgrave
发明人： Andrew Tham , Steven R. Norsworthy , Jason Rupert Redgrave
IPC分类号： H03G3/20
CPC分类号： H03G3/3042 , H03F1/0222 , H03F1/0233 , H03F1/32 , H03F1/3211 , H03F1/3294 , H03F3/45183 , H03F2200/102 , H03F2203/45568
摘要： Improved radio frequency (RF) envelope tracking apparatus for use in wireless and wired systems. In one exemplary embodiment, a transmitter upconversion stage receives input digital I and Q values, the output of the upconversion stage being fed to both an envelope tracking circuit and a power amplifier (before or after optional filtering). The envelope tracking circuit controls the operation of a power modulator, which adjusts the power amplifier. The envelope tracking circuit is specifically configured to provide improved linearity and power efficiency. The envelope tracking apparatus and methods of the present invention may be applied to heterodyne/super-heterodyne architectures as well as others.
摘要翻译：用于无线和有线系统的改进的射频（RF）包络跟踪装置。在一个示例性实施例中，发射机上变频级接收输入数字I和Q值，上变频级的输出馈送到包络跟踪电路和功率放大器（在可选滤波之前或之后）。包络跟踪电路控制调节功率放大器的功率调制器的操作。包络跟踪电路被特别地配置成提供改进的线性度和功率效率。本发明的信封跟踪装置和方法可以应用于外差/超外差架构以及其他。

3. 发明授权

US07116253B2 Radio frequency digital-to-analog converter 有权
公开(公告)号：US07116253B2
公开(公告)日：2006-10-03
申请号：US10910917
申请日：2004-08-03
申请人： Steven R. Norsworthy , Andrew Tham , Jason Rupert Redgrave , Aubrey Arthur Grey
发明人： Steven R. Norsworthy , Andrew Tham , Jason Rupert Redgrave , Aubrey Arthur Grey
IPC分类号： H03M1/00
CPC分类号： H03F3/3432 , H03F1/22 , H03F2200/331 , H03M1/0863 , H03M1/742
摘要： A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base voltage swing, and (iv) compensated high voltage swing, are provided. The foregoing apparatus and methods can be applied to any RF signal application (wireless or otherwise), including for example wireless cellular handsets.

4. 发明申请

US20110299642A1 NOISE SHAPED INTERPOLATOR AND DECIMATOR APPARATUS AND METHOD 有权
标题翻译：噪声形状的插值器和减法器装置和方法
公开(公告)号：US20110299642A1
公开(公告)日：2011-12-08
申请号：US13211054
申请日：2011-08-16
申请人： Steven R. Norsworthy , Jason Rupert Redgrave
发明人： Steven R. Norsworthy , Jason Rupert Redgrave
IPC分类号： H04L7/04 , H03D3/24 , H04L7/00
CPC分类号： H04L7/0008 , H03H17/0614 , H03H17/0628 , H03H2218/04 , H04L7/0025 , H04L7/005 , H04L7/02
摘要： Improved interpolator and decimator apparatus and methods, including the addition of an elastic storage element in the signal path. In one exemplary embodiment, the elastic element comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.
摘要翻译：改进的内插器和抽取器装置和方法，包括在信号路径中添加弹性存储元件。在一个示例性实施例中，弹性元件包括有利地允许采样时钟的短期变化被吸收的FIFO，并且还提供用于控制基于Δ-Σ调制的模N计数器的采样时钟发生器的反馈机制。与Δ-Σ调制器和计数器结合的弹性元件产生噪声形式的频率锁定环，而没有额外的组件，导致了非常简化的内插器和抽取器。

5. 发明授权

US08019035B2 Noise shaped interpolator and decimator apparatus and method 有权
标题翻译：噪声形状的内插器和抽取装置及方法
公开(公告)号：US08019035B2
公开(公告)日：2011-09-13
申请号：US10910910
申请日：2004-08-03
申请人： Steven R. Norsworthy , Jason Rupert Redgrave
发明人： Steven R. Norsworthy , Jason Rupert Redgrave
IPC分类号： H04L7/00 , H04L25/00 , H04L25/40
CPC分类号： H04L7/0008 , H03H17/0614 , H03H17/0628 , H03H2218/04 , H04L7/0025 , H04L7/005 , H04L7/02
摘要： Improved interpolator and decimator apparatus and methods, including the addition of an elastic storage element in the signal path. In one exemplary embodiment, the elastic element comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.
摘要翻译：改进的内插器和抽取器装置和方法，包括在信号路径中添加弹性存储元件。在一个示例性实施例中，弹性元件包括有利地允许采样时钟的短期变化被吸收的FIFO，并且还提供用于控制基于Δ-Σ调制的模N计数器的采样时钟发生器的反馈机制。与Δ-Σ调制器和计数器结合的弹性元件产生噪声形式的频率锁定环，而没有额外的组件，导致了非常简化的内插器和抽取器。

6. 发明授权

US08744032B2 Noise shaped interpolator and decimator apparatus and method 有权
标题翻译：噪声形状的内插器和抽取装置及方法
公开(公告)号：US08744032B2
公开(公告)日：2014-06-03
申请号：US13211054
申请日：2011-08-16
申请人： Steven R. Norsworthy , Jason Rupert Redgrave
发明人： Steven R. Norsworthy , Jason Rupert Redgrave
IPC分类号： H04L7/00
CPC分类号： H04L7/0008 , H03H17/0614 , H03H17/0628 , H03H2218/04 , H04L7/0025 , H04L7/005 , H04L7/02
摘要： Improved interpolator and decimator apparatus and methods, including the addition of an elastic storage element in the signal path. In one exemplary embodiment, the elastic element comprises a FIFO which advantageously allows short term variation in sample clocks to be absorbed, and also provides a feedback mechanism for controlling a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.
摘要翻译：改进的内插器和抽取器装置和方法，包括在信号路径中添加弹性存储元件。在一个示例性实施例中，弹性元件包括有利地允许采样时钟的短期变化被吸收的FIFO，并且还提供用于控制基于Δ-Σ调制的模N计数器的采样时钟发生器的反馈机制。与Δ-Σ调制器和计数器结合的弹性元件产生噪声形式的频率锁定环，而没有额外的组件，导致了非常简化的内插器和抽取器。

7. 发明授权

US07561635B2 Variable coder apparatus for resonant power conversion and method 有权
标题翻译：用于谐振功率转换的可变编码器装置及方法
公开(公告)号：US07561635B2
公开(公告)日：2009-07-14
申请号：US10910941
申请日：2004-08-03
申请人： Steven R. Norsworthy , Jason Rupert Redgrave
发明人： Steven R. Norsworthy , Jason Rupert Redgrave
IPC分类号： H04L27/04 , H04B14/06
CPC分类号： H03M3/392 , H03M3/394 , H03M3/424 , H03M3/448 , H03M3/454 , H03M3/498
摘要： A noise-shaping coder with variable or reconfigurable characteristics is disclosed. In one exemplary embodiment, an improved apparatus for signal modulation is disclosed. The apparatus generally comprises a noise-shaping coder having programmable coefficients, programmable coder order, programmable oversampling frequency, and/or programmable dither. In a second exemplary embodiment, an improved method for implementing noise shaping coding is disclosed. The apparatus generally comprises a means for switching from one order coder to another order coder, as well as switching oversampling frequency.
摘要翻译：公开了具有可变或可重新配置特性的噪声整形编码器。在一个示例性实施例中，公开了一种用于信号调制的改进装置。该装置通常包括具有可编程系数，可编程编码器顺序，可编程过采样频率和/或可编程抖动的噪声整形编码器。在第二示例性实施例中，公开了一种用于实现噪声整形编码的改进方法。该装置通常包括用于从一个订单编码器切换到另一个订单编码器的装置，以及切换过采样频率。

8. 发明申请

US20110281528A1 RESONANT POWER CONVERTER FOR RADIO FREQUENCY TRANSMISSION AND METHOD 有权
标题翻译：用于无线电频率传输的谐振电源转换器和方法
公开(公告)号：US20110281528A1
公开(公告)日：2011-11-17
申请号：US13079624
申请日：2011-04-04
申请人： Steven R. Norsworthy , Ross W. Norsworthy
发明人： Steven R. Norsworthy , Ross W. Norsworthy
IPC分类号： H04B1/38
CPC分类号： H04B1/04 , H03C3/40
摘要： A resonant power converter for ultra-efficient radio frequency transmission and associated methods. In one exemplary embodiment, the invention is digitally actuated and uses a combination of a noise-shaped encoder, a charging switch, and a high-Q resonator coupled to an output load, typically an antenna or transmission line. Energy is built up in the electric and magnetic fields of the resonator, which, in turn, delivers power to the load with very little wasted energy in the process. No active power amplifier is required. The apparatus can be used in literally any RF signal application (wireless or otherwise), including for example cellular handsets, local- or wide-area network transmitters, or even radio base-stations.
摘要翻译：一种用于超高效射频传输和相关方法的谐振功率转换器。在一个示例性实施例中，本发明被数字地驱动，并且使用噪声形编码器，充电开关和耦合到输出负载（通常为天线或传输线）的高Q谐振器的组合。在谐振器的电场和磁场中建立能量，这又在该过程中以很少的浪费能量向负载输送功率。不需要有功功率放大器。该装置可以用于任何RF信号应用（无线或其他），包括例如蜂窝式手机，本地或广域网发射机，甚至无线电基站。

9. 发明授权

US06366622B1 Apparatus and method for wireless communications 有权
标题翻译：无线通信的装置和方法
公开(公告)号：US06366622B1
公开(公告)日：2002-04-02
申请号：US09305330
申请日：1999-05-04
申请人： Stephen Joseph Brown , Andrew Xavier Estrada , Terrance R. Bourk , Steven R. Norsworthy , Patrick J. Murphy , Christopher Dennis Hull , Glenn Chang , Mark Vernon Lane , Jorge A. Grilo
发明人： Stephen Joseph Brown , Andrew Xavier Estrada , Terrance R. Bourk , Steven R. Norsworthy , Patrick J. Murphy , Christopher Dennis Hull , Glenn Chang , Mark Vernon Lane , Jorge A. Grilo
IPC分类号： H04B130
CPC分类号： H04B1/30
摘要： An apparatus for receiving signals includes a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal. An I/Q direct down converter is coupled to the LNA. The I/Q direct down converter is configured to split the RF signal into real and imaginary components and to down convert the real and imaginary components directly to baseband signals. A local oscillator (LO) is coupled to the I/Q direct down converter and is configured to drive the I/Q direct down converter. First and second filters are coupled to the I/Q direct down converter. The first and second filters are configured to filter the down converted real and imaginary components, respectively. First and second analog-to-digital converters (ADCs) are coupled to the first and second filters, respectively. The first and second ADCs are configured to convert the real and imaginary components into digital signals. The first and second ADCs have a dynamic range that is wide enough to convert the filtered, down converted real and imaginary components to digital signals without using variable gain on the filtered and down converted real and imaginary components. An apparatus for use in wireless communications includes a radio, a modem and a controller integrated onto a single integrated circuit (IC). The radio includes a receiver for receiving data and a transmitter for transmitting data. The modem is coupled to the radio and is configured to demodulate received data and modulate data for transmission. The controller is coupled to the modem and includes a digital interface for external communications through which received data and data for transmission is sent, a connection state machine configured to accept commands through the digital interface and to respond to the commands by initiating a sequence, and a receive/transmit state machine configured to perform state control of the radio in response to the initiated sequence.
摘要翻译：用于接收信号的装置包括被配置为接收射频（RF）信号的低噪声放大器（LNA）。 I / Q直接下变频器耦合到LNA。 I / Q直接下变频器被配置为将RF信号分成实部和虚部，并将实部和虚部分直接转换为基带信号。本地振荡器（LO）耦合到I / Q直接下变频器，并被配置为驱动I / Q直接下变频器。第一和第二滤波器耦合到I / Q直接下变频器。第一和第二滤波器被配置为分别对下变换的实部和虚部进行滤波。第一和第二模数转换器（ADC）分别耦合到第一和第二滤波器。第一和第二ADC被配置为将实部和虚部转换为数字信号。第一和第二ADC具有足够宽的动态范围，以将滤波的，下变换的实分量和虚分量转换为数字信号，而不对滤波和下变换的实分量和虚分量进行可变增益。用于无线通信的装置包括集成在单个集成电路（IC）上的无线电，调制解调器和控制器。无线电设备包括用于接收数据的接收机和用于发送数据的发射机。调制解调器耦合到无线电设备，并被配置为对接收到的数据进行解调并调制数据进行传输。控制器耦合到调制解调器，并且包括用于外部通信的数字接口，通过该数字接口发送接收的数据和用于发送的数据，连接状态机被配置为通过数字接口接受命令并且通过发起序列来响应命令，以及接收/发送状态机，被配置为响应于所启动的序列来执行无线电的状态控制。

10. 发明授权

US5457456A Data converter with programmable decimation or interpolation factor 失效
标题翻译：具有可编程抽取或插值因子的数据转换器
公开(公告)号：US5457456A
公开(公告)日：1995-10-10
申请号：US168437
申请日：1993-12-16
申请人： Steven R. Norsworthy
发明人： Steven R. Norsworthy
IPC分类号： H03M1/12 , H03H17/00 , H03H17/06 , H03M1/66 , H03M3/02 , H03M7/00
CPC分类号： H03H17/0671 , H03H17/0621
摘要： In accordance with an embodiment of the invention, a data converter is disclosed that provides a sampling rate conversion. The converter receives a clock signal, a divided-down clock signal, and first digital signal samples at a first rate. The converter converts the first digital signal samples to second digital signal samples at a second rate. The ratio of the first rate to the second rate is defined as a fist conversion rate factor. A first programmable counter receives the clock signal and divides down the clock signal to produce a divided-down clock signal. The first programmable counter is programmable to selectively determine the first conversion rate factor.In an alternate embodiment, another stage of sampling rate conversion is provided by a second data converter. The second converter receives the divided-down clock signal, a further divided-down clock signal, and the second digital signal samples. The second data converter converts the second digital signal samples to the third rate. The ratio of the second rate to the third rate is defined as a second conversion rate factor. A second programmable counter receives the divided down clock signal and divides it down to produce a further divided-down clock signal. The second programmable counter programmable to selectively determine the second conversion rate factor.
摘要翻译：根据本发明的实施例，公开了提供采样率转换的数据转换器。转换器以第一速率接收时钟信号，分频时钟信号和第一数字信号采样。转换器以第二速率将第一数字信号样本转换为第二数字信号采样。第一速率与第二速率的比率被定义为第一转换率因子。第一个可编程计数器接收时钟信号，并将时钟信号降低以产生一个分频时钟信号。第一可编程计数器是可编程的，以选择性地确定第一转换率因子。在替代实施例中，另一级采样率转换由第二数据转换器提供。第二转换器接收分频时钟信号，进一步分频时钟信号和第二数字信号采样。第二数据转换器将第二数字信号采样转换成第三速率。第二速率与第三速率的比率被定义为第二转换率因子。第二可编程计数器接收分频下降时钟信号并将其分频以产生进一步的分频时钟信号。第二可编程计数器可编程以选择性地确定第二转换率因子。

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