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31. 发明授权

US07693502B2 Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships 失效
标题翻译：用于下变频电磁信号的方法和系统，转换相同和孔径关系
公开(公告)号：US07693502B2
公开(公告)日：2010-04-06
申请号：US12149511
申请日：2008-05-02
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04B15/00
CPC分类号： H04L27/3881 , H03C1/62 , H03D7/00 , H03D7/1441 , H03D7/1475 , H04B1/0025 , H04B1/16 , H04B1/28 , H04B7/12 , H04L25/08 , H04L27/00 , H04L27/06 , H04L27/12 , H04L27/14 , H04L27/148 , H04L27/156 , H04L27/2672
摘要： Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving an EM signal and recursively operating on approximate half cycles (½, 1½, 2½, etc.) of the carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the results of the recursive operations and uses the accumulated results to form a down-converted signal. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.
摘要翻译：本文描述了用于电磁（EM）信号的下变频的方法，系统和装置，以及其组合和子组合。简言之，在实施例中，本发明通过接收EM信号并且在载波信号的近似半周期（½，1½，2½等）上递归地操作）来操作。可以以载波信号的次谐波速率执行递归运算。本发明积累了递归运算的结果，并使用累加结果形成降频转换信号。在一个实施例中，EM信号被下变频到中频（IF）信号。在另一个实施例中，EM信号被下变频为基带信息信号。在另一个实施例中，EM信号是频率调制（FM）信号，其被下变频成非FM信号，例如相位调制（PM）信号或幅度调制（AM）信号。

32. 发明授权

US07693230B2 Apparatus and method of differential IQ frequency up-conversion 失效
公开(公告)号：US07693230B2
公开(公告)日：2010-04-06
申请号：US11358395
申请日：2006-02-22
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04L27/04 , H04L27/12 , H04L27/20
CPC分类号： H04B1/04 , H03C3/40 , H03D3/006 , H03D7/00 , H04B1/408 , H04B2001/0491 , H04L25/03
摘要： A balanced transmitter up-converts I and Q baseband signals directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In operation, the balanced modulator sub-harmonically samples the I and Q baseband signals in a balanced and differential manner, resulting in harmonically rich signal. The harmonically rich signal contains multiple harmonic images that repeat at multiples of the sampling frequency, where each harmonic contains the necessary information to reconstruct the I and Q baseband signals. The differential sampling is performed according to a first and second control signals that are phase shifted with respect to each other. In embodiments of the invention, the control signals have pulse widths (or apertures) that operate to improve energy transfer to a desired harmonic in the harmonically rich signal. A bandpass filter can then be utilized to select the desired harmonic of interest from the harmonically rich signal.

33. 发明授权

US07647030B2 Multiple input single output (MISO) amplifier with circuit branch output tracking 有权
标题翻译：多输入单输出（MISO）放大器，具有电路分支输出跟踪
公开(公告)号：US07647030B2
公开(公告)日：2010-01-12
申请号：US11637004
申请日：2006-12-12
申请人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04B1/04
CPC分类号： H03F1/0233 , H03C5/00 , H03F1/02 , H03F1/0205 , H03F1/0294 , H03F1/32 , H03F1/3205 , H03F1/3223 , H03F3/193 , H03F3/211 , H03F3/24 , H03F3/245 , H03F3/45071 , H03F2200/336 , H03F2200/387 , H03F2200/451 , H03F2201/3215 , H03G3/3042 , H04B1/04 , H04B1/0475 , H04B1/0483 , H04B2001/045 , H04B2001/0491 , H04L27/20 , H04L27/36 , H04L27/362
摘要： Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
摘要翻译：本文公开了用于矢量组合功率放大的方法和系统。在一个实施例中，多个信号被单独放大，然后相加以形成期望的时变复包络信号。控制一个或多个信号的相位和/或频率特性以提供期望的时变复包络信号的期望的相位，频率和/或幅度特性。在另一个实施例中，时变复包络信号被分解为多个恒定包络分量信号。构成信号被均等地或基本相等地放大，然后相加以构建原始时变包络信号的放大版本。实施例还执行上变频。

34. 发明申请

US20090203345A1 Method and system for down-converting an Electromagnetic signal, transforms for same, and Aperture relationships 失效
标题翻译：用于下变频电磁信号的方法和系统，转换相同和Aperture关系
公开(公告)号：US20090203345A1
公开(公告)日：2009-08-13
申请号：US12149511
申请日：2008-05-02
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, JR. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, JR. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H03D7/00 , H04B15/00 , H04B1/26
CPC分类号： H04L27/3881 , H03C1/62 , H03D7/00 , H03D7/1441 , H03D7/1475 , H04B1/0025 , H04B1/16 , H04B1/28 , H04B7/12 , H04L25/08 , H04L27/00 , H04L27/06 , H04L27/12 , H04L27/14 , H04L27/148 , H04L27/156 , H04L27/2672
摘要： Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving an EM signal and recursively operating on approximate half cycles (½, 1½, 2½, etc.) of the carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the results of the recursive operations and uses the accumulated results to form a down-converted signal. In an embodiment, the EM signal is down-converted to an intermediate frequency (IF) signal. In another embodiment, the EM signal is down-converted to a baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated (PM) signal or an amplitude modulated (AM) signal.
摘要翻译：本文描述了用于电磁（EM）信号的下变频的方法，系统和装置，以及其组合和子组合。简言之，在实施例中，本发明通过接收EM信号并且在载波信号的近似半周期（½，1½，2½等）上递归地操作）来操作。可以以载波信号的次谐波速率执行递归运算。本发明积累了递归运算的结果，并使用累加结果形成降频转换信号。在一个实施例中，EM信号被下变频到中频（IF）信号。在另一个实施例中，EM信号被下变频为基带信息信号。在另一个实施例中，EM信号是频率调制（FM）信号，其被下变频成非FM信号，例如相位调制（PM）信号或幅度调制（AM）信号。

35. 发明申请

US20080272441A1 Method and circuit for down-converting a signal 有权
标题翻译：用于下变频信号的方法和电路
公开(公告)号：US20080272441A1
公开(公告)日：2008-11-06
申请号：US12007342
申请日：2008-01-09
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses , Michael W. Rawlins , Gregory S. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses , Michael W. Rawlins , Gregory S. Rawlins
IPC分类号： H01L29/78 , H01L21/336
CPC分类号： H04L27/3881 , H03C1/62 , H03D7/00 , H03D7/1441 , H03D7/1475 , H04B1/0025 , H04B1/16 , H04B1/28 , H04B7/12 , H04L25/08 , H04L27/00 , H04L27/06 , H04L27/12 , H04L27/14 , H04L27/148 , H04L27/156 , H04L27/2672
摘要： Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing rate. The EM signal is aliased according to the aliasing signal to down-convert the EM signal. The term aliasing, as used herein, refers to both down-converting an EM signal by under-sampling the EM signal at an aliasing rate, and down-converting an EM signal by transferring energy from the EM signal at the aliasing rate. In an embodiment, the EM signal is down-converted to an intermediate frequency signal. In another embodiment, the EM signal is down-converted to a demodulated baseband information signal. In another embodiment, the EM signal is a frequency modulated (FM) signal, which is down-converted to a non-FM signal, such as a phase modulated signal or an amplitude modulated signal.
摘要翻译：这里描述了通过使EM信号进行混叠来降低电磁（EM）信号的转换的方法，系统和装置。简要地说，这样的方法，系统和装置通过接收具有混叠速率的EM信号和混叠信号来操作。 EM信号根据混叠信号进行混叠，以降低EM信号的转换。如本文所使用的，术语混叠是指通过以混叠速率对EM信号进行欠采样，并以混叠速率从EM信号传输能量来对EM信号进行下变频来对EM信号进行下变频。在一个实施例中，EM信号被下变频为中频信号。在另一实施例中，EM信号被下变频为解调的基带信息信号。在另一个实施例中，EM信号是频率调制（FM）信号，其被下变频成非FM信号，例如相位调制信号或幅度调制信号。

36. 发明申请

US20070249299A1 Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same 有权
公开(公告)号：US20070249299A1
公开(公告)日：2007-10-25
申请号：US11725524
申请日：2007-03-20
申请人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04B1/02
CPC分类号： H04B1/0483 , H03D7/165 , H03F1/0294 , H03F1/30 , H03F1/3241 , H03H7/21 , H03H17/08
摘要： Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.

37. 发明申请

US20070248186A1 Systems and methods of RF power transmission, modulation, and amplification, including embodiments for compensating for waveform distortion 有权
标题翻译： RF功率传输，调制和放大的系统和方法，包括用于补偿波形失真的实施例
公开(公告)号：US20070248186A1
公开(公告)日：2007-10-25
申请号：US11711811
申请日：2007-02-28
申请人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04L25/03
CPC分类号： H04L27/361 , H03F1/0205 , H03F1/0261 , H03F1/0294 , H03F1/30 , H03F1/32 , H03F1/3241 , H03F3/211 , H03F3/24 , H03F2200/336 , H03F2203/21142 , H03H7/21 , H03H17/08 , H04L27/366
摘要： Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
摘要翻译：本文公开了用于矢量组合功率放大的方法和系统。在一个实施例中，多个信号被单独放大，然后相加以形成期望的时变复包络信号。控制一个或多个信号的相位和/或频率特性以提供期望的时变复包络信号的期望的相位，频率和/或幅度特性。在另一个实施例中，时变复包络信号被分解为多个恒定包络分量信号。构成信号被均等地或基本相等地放大，然后相加以构建原始时变包络信号的放大版本。实施例还执行上变频。

38. 发明授权

US07107028B2 Apparatus, system, and method for up converting electromagnetic signals 有权
标题翻译：用于上变频电磁信号的装置，系统和方法
公开(公告)号：US07107028B2
公开(公告)日：2006-09-12
申请号：US10961272
申请日：2004-10-12
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04B1/04
CPC分类号： H03D7/00 , H04B1/16
摘要： Methods, systems, and apparatuses for down-converting and up-converting an electromagnetic signal. In embodiments, the invention operates by receiving an electromagnetic signal and recursively operating on approximate half cycles of a carrier signal. The recursive operations can be performed at a sub-harmonic rate of the carrier signal. The invention accumulates the results of the recursive operations and uses the accumulated results to form a down-converted signal. In embodiments, up-conversion is accomplished by controlling a switch with an oscillating signal, the frequency of the oscillating signal being selected as a sub-harmonic of the desired output frequency. When the invention is being used in the frequency modulation or phase modulation implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate a bias signal. The output of the switch is filtered, and the desired harmonic is output.
摘要翻译：用于下变频和上变频电磁信号的方法，系统和装置。在实施例中，本发明通过接收电磁信号并且在载波信号的近似半周期上递归地操作。可以以载波信号的次谐波速率执行递归运算。本发明积累了递归运算的结果，并使用累加结果形成降频转换信号。在实施例中，通过用振荡信号控制开关来实现上转换，振荡信号的频率被选择为所需输出频率的次谐波。当本发明被用于频率调制或相位调制实现中时，振荡信号在信号信号被调制之前使得开关门偏置偏置信号。开关的输出被滤波，输出所需的谐波。

39. 发明授权

US07010559B2 Method and apparatus for a parallel correlator and applications thereof 有权
公开(公告)号：US07010559B2
公开(公告)日：2006-03-07
申请号：US09987193
申请日：2001-11-13
申请人： Gregory S. Rawlins , Michael W. Rawlins , David F. Sorrells
发明人： Gregory S. Rawlins , Michael W. Rawlins , David F. Sorrells
IPC分类号： G06F17/15
CPC分类号： G06F17/15 , G06F17/141 , G06F17/147
摘要： A fast correlator transform (FCT) algorithm and methods and systems for implementing same, correlate an encoded data word (X0-XM-1) with encoding coefficients (C0-CM-1), wherein each of (X0-XM-1) is represented by one or more bits and each said coefficient is represented by one or more bits, wherein each coefficient has k possible states, and wherein M is greater than 1. In accordance with the invention, X0 is multiplied by each state (C0(0) through C0(k-1)) of the coefficient C0, thereby generating results X0C0(0) through X0C0(k-1). This is repeating for data bits (X1-XM-1) and corresponding coefficients (C1-CM-1), respectively. The results are grouped into N groups. Members of each of the N groups are added to one another, thereby generating a first layer of correlation results. The first layer of results is grouped and the members of each group are summed with one another to generate a second layer of results. This process is repeated as necessary until a final layer of results is generated. The final layer of results includes a separate correlation output for each possible state of the complete set of coefficients (C0-CM-1). The final layer of results is compared to identify a most likely code encoded on said data word. In an embodiment, the summations are pruned to exclude summations that would result in invalid combinations of the encoding coefficients (C0-CM-1). In an embodiment, substantially the same hardware is utilized for processing in-phase and quadrature phase components of the data word (X0-XM-1). In an embodiment, the coefficients (C0-CM-1) represent real numbers. In an alternative embodiment, the coefficients (C0-CM-1) represent complex numbers. In an embodiment, the coefficients (C0-CM-1) are represented with a single bit. Alternatively, the coefficients (C0-CM-1) are represented with multiple bits (e.g., magnitude). In an embodiment, the coefficients (C0-CM-1) represent a cyclic code keying (“CCK”) code set substantially in accordance with IEEE 802.11 WLAN standard.

40. 发明授权

US06853690B1 Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments 有权
标题翻译：用于基带信号和4相接收器和收发器实施例的平衡上变频的方法，系统和装置
公开(公告)号：US06853690B1
公开(公告)日：2005-02-08
申请号：US09525615
申请日：2000-03-14
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H03C3/40 , H03D3/00 , H03D7/00 , H04L27/04 , H04L27/12 , H04L27/20
CPC分类号： H04B1/0475 , H03C3/40 , H03D3/006 , H03D7/00 , H04L25/03
摘要： A balanced transmitter up-converts a baseband signal directly from baseband-to-RF. The up-conversion process is sufficiently linear that no IF processing is required, even in communications applications that have stringent requirements on spectral growth. In operation, the balanced modulator sub-harmonically samples the baseband signal in a balanced and differential manner, resulting in harmonically rich signal. The harmonically rich signal contains multiple harmonic images that repeat at multiples of the sampling frequency, where each harmonic contains the necessary information to reconstruct the baseband signal. The differential sampling is performed according to a first and second control signals that are phase shifted with respect to each other. In embodiments of the invention, the control signals have pulse widths (or apertures) that operate to improve energy transfer to a desired harmonic in the harmonically rich signal. A bandpass filter can then be utilized to select the desired harmonic of interest from the harmonically rich signal. The sampling modules that perform the sampling can be configured in either a series or a shunt configuration. In embodiments of the invention, DC offset voltages are minimized between the sampling modules to minimize or prevent carrier insertion into the harmonic images.
摘要翻译：平衡发射机直接从基带到RF RF转换基带信号。上转换过程是足够的线性，即使在对频谱增长有严格要求的通信应用中也不需要IF处理。在运行中，平衡调制器以平衡和差分的方式对基带信号进行子谐波采样，从而产生谐波丰富的信号。谐波丰富的信号包含以抽样频率的倍数重复的多个谐波图像，其中每个谐波包含必要的信息以重构基带信号。根据相对于彼此相移的第一和第二控制信号执行差分采样。在本发明的实施例中，控制信号具有脉冲宽度（或孔径），其操作以改善在谐波丰富信号中的期望谐波的能量传递。然后可以利用带通滤波器从谐波丰富的信号中选择所需要的谐波。执行采样的采样模块可以以串联或分流配置进行配置。在本发明的实施例中，采样模块之间的DC偏移电压最小化，以最小化或防止载波插入到谐波图像中。

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