公开(公告)号：US07308242B2

公开(公告)日：2007-12-11

申请号：US10914337

申请日：2004-08-10

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 ,  H04B1/00

CPC分类号： H04B7/12 ,  H03C1/62 ,  H03D7/00

摘要： Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting and up-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. 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.

摘要翻译： 这里描述了用于电磁（EM）信号的下变频和上变频的方法，系统和装置及其组合和子组合。 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。 通过控制具有振荡信号的开关来实现上转换，将振荡信号的频率选择为所需输出频率的次谐波。

公开(公告)号：US07110444B1

公开(公告)日：2006-09-19

申请号：US09632856

申请日：2000-08-04

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： H04L5/16

CPC分类号： H03D3/006 ,  H03C3/40 ,  H03D7/00 ,  H04W84/12 ,  H04W88/02

摘要： Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation facilitation module, and a MAC interface. The WLAN receiver includes at least one universal frequency translation module that frequency down-converts a received EM signal. In embodiments, the UFT based receiver is configured in a multi-phase embodiment to reduce or eliminate re-radiation that is caused by DC offset. The WLAN transmitter includes at least one universal frequency translation module that frequency up-converts a baseband signal in preparation for transmission over the wireless LAN. In embodiments, the UFT based transmitter is configured in a differential and multi-phase embodiment to reduce carrier insertion and spectral growth.

摘要翻译： 本文描述了频率转换及其应用，包括RF调制解调器和无线局域网（WLAN）应用。 在实施例中，WLAN发明包括天线，LNA / PA模块，接收机，发射机，控制信号发生器，解调/调制促进模块和MAC接口。 WLAN接收机包括至少一个对所接收的EM信号进行下变频的通用频率转换模块。 在实施例中，基于UFT的接收机被配置在多相实施例中以减少或消除由DC偏移引起的再辐射。 WLAN发射机包括至少一个通用频率转换模块，其对基带信号进行频率上变频，以准备通过无线LAN进行传输。 在实施例中，基于UFT的发射机被配置在差分和多相实施例中以减少载波插入和频谱增长。

公开(公告)号：US07065162B1

公开(公告)日：2006-06-20

申请号：US09550642

申请日：2000-04-14

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： H03D1/00 ,  H04L27/06

CPC分类号： H03D7/00

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。

公开(公告)号：US08588725B2

公开(公告)日：2013-11-19

申请号：US13618621

申请日：2012-09-14

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： H04B1/26 ,  H04B15/00

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。 当本发明在频率调制或相位调制实现中被使用时，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。

公开(公告)号：US20120114078A1

公开(公告)日：2012-05-10

申请号：US13323550

申请日：2011-12-12

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： H04L27/00

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。

公开(公告)号：US20110194648A1

公开(公告)日：2011-08-11

申请号：US13090031

申请日：2011-04-19

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： H04L27/00

CPC分类号： H03D3/006 ,  H03C3/40 ,  H03D7/00 ,  H04W84/12 ,  H04W88/02

摘要： Frequency translation and applications of the same are described herein, including RF modem and wireless local area network (WLAN) applications. In embodiments, the WLAN invention includes an antenna, an LNA/PA module, a receiver, a transmitter, a control signal generator, a demodulation/modulation facilitation module, and a MAC interface. The WLAN receiver includes at least one universal frequency translation module that frequency down-converts a received EM signal. In embodiments, the UFT based receiver is configured in a multi-phase embodiment to reduce or eliminate re-radiation that is caused by DC offset. The WLAN transmitter includes at least one universal frequency translation module that frequency up-converts a baseband signal in preparation for transmission over the wireless LAN. In embodiments, the UFT based transmitter is configured in a differential and multi-phase embodiment to reduce carrier insertion and spectral growth.

摘要翻译： 本文描述了频率转换及其应用，包括RF调制解调器和无线局域网（WLAN）应用。 在实施例中，WLAN发明包括天线，LNA / PA模块，接收机，发射机，控制信号发生器，解调/调制促进模块和MAC接口。 WLAN接收机包括至少一个对所接收的EM信号进行下变频的通用频率转换模块。 在实施例中，基于UFT的接收机被配置在多相实施例中以减少或消除由DC偏移引起的再辐射。 WLAN发射机包括至少一个通用频率转换模块，其对基带信号进行频率上变频，以准备通过无线LAN进行传输。 在实施例中，基于UFT的发射机被配置在差分和多相实施例中以减少载波插入和频谱增长。

公开(公告)号：US07822401B2

公开(公告)日：2010-10-26

申请号：US10961342

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： H04B1/26

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。

公开(公告)号：US07599421B2

公开(公告)日：2009-10-06

申请号：US11404957

申请日：2006-04-17

申请人： David F. Sorrells ,  Michael J. Bultman ,  Charles D. Clements ,  Robert W. Cook ,  Joseph M. Hamilla ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Gregory S. Silver

发明人： David F. Sorrells ,  Michael J. Bultman ,  Charles D. Clements ,  Robert W. Cook ,  Joseph M. Hamilla ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Gregory S. Silver

IPC分类号： H04B1/00

CPC分类号： H03D7/00 ,  H04B1/707

摘要： Frequency translation and spread spectrum applications of same are described herein. Such applications include, but are not limited to, unified down-conversion and de-spreading, unified up-conversion and spreading, RAKE receivers utilizing unified down-conversion and de-spreading, and Early/Late receivers utilizing unified down-conversion and de-spreading, and combinations and applications of same. Additionally, applications are included for limiting spectral growth during unified up-conversion and spreading of a baseband signal.

摘要翻译： 本文描述了其频率转换和扩频应用。 这样的应用包括但不限于统一的下转换和解扩，统一上转换和扩展，使用统一的下转换和解扩的RAKE接收机，以及利用统一的下转换和de 扩展，以及它们的组合和应用。 另外，包括用于限制基带信号的统一上变频和扩频期间的频谱增长的应用。

公开(公告)号：US20090221257A1

公开(公告)日：2009-09-03

申请号：US12349802

申请日：2009-01-07

申请人： David F. SORRELLS ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, JR. ,  Michael W. Rawlins ,  Gregory S. Rawlins

发明人： David F. SORRELLS ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, JR. ,  Michael W. Rawlins ,  Gregory S. Rawlins

IPC分类号： H04B1/16 ,  H03D7/00 ,  H04B7/12

CPC分类号： H03D7/00

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。

公开(公告)号：US07389100B2

公开(公告)日：2008-06-17

申请号：US10394069

申请日：2003-03-24

申请人： David F. Sorrells ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Michael W. Rawlins ,  Gregory S. Rawlins

发明人： David F. Sorrells ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Michael W. Rawlins ,  Gregory S. Rawlins

IPC分类号： H04B1/16

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 (IF) 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 (PM) signal or an amplitude modulated (AM) 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信号被下变频到中频（IF）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（PM）信号或幅度调制（AM）信号。