公开(公告)号：US07515896B1

公开(公告)日：2009-04-07

申请号：US09550644

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： H03L7/08

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：US07386292B2

公开(公告)日：2008-06-10

申请号：US10972132

申请日：2004-10-25

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 EM signal and recursively operating on approximate half cycles 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 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 the 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EM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对偏置信号进行栅极输入。 开关的输出被滤波，输出所需的谐波。

公开(公告)号：US07321735B1

公开(公告)日：2008-01-22

申请号：US09567977

申请日：2000-05-10

申请人： Francis J. Smith ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  David F. Sorrells ,  Danny E. Stoneking

发明人： Francis J. Smith ,  Michael J. Bultman ,  Robert W. Cook ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  David F. Sorrells ,  Danny E. Stoneking

IPC分类号： H04B10/06

CPC分类号： H03D7/00

摘要： A method and system for converting an optical signal to electrical information signals, including demodulated baseband information signals and modulated baseband signals at multiple harmonics. In an embodiment, the optical information signal is amplitude modulated with information. The method converts an optical signal to electrical charge, accumulates the electrical charge, and periodically transfers the accumulated electrical charge to a storage device, whereby the periodically transferred electrical charge forms the electrical signals. An exemplary system includes an optical transducer and a universal frequency translator coupled to an output of the optical transducer. The optical transducer receives an optical signal and converts the optical signal to electrical charge. The universal frequency translator periodically transfers energy from the electrical charge and forms the electrical signals from the transferred energy. In an embodiment, the present invention converts an I and Q optical signal to electrical signals. In an embodiment, the present invention converts an optical signal to an RF electrical signal using relatively few components, while preserving information content.

摘要翻译： 一种用于将光信号转换为电信息信号的方法和系统，包括解调的基带信息信号和多个谐波的调制的基带信号。 在一个实施例中，光信息信号用信息进行幅度调制。 该方法将光信号转换为电荷，累积电荷，并将累积的电荷周期性地传送到存储装置，由此周期性转移的电荷形成电信号。 示例性系统包括光学换能器和耦合到光学换能器的输出的通用频率转换器。 光学传感器接收光信号并将光信号转换成电荷。 通用频率转换器周期性地从电荷传输能量，并从传送的能量形成电信号。 在一个实施例中，本发明将I和Q光信号转换成电信号。 在一个实施例中，本发明使用相对较少的组件将光信号转换成RF电信号，同时保留信息内容。

公开(公告)号：US07072390B1

公开(公告)日：2006-07-04

申请号：US09632855

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： H04B1/38 ,  H04L5/16

CPC分类号： H04L25/061 ,  H04L27/22 ,  H04L27/38 ,  H04W4/18 ,  H04W84/12 ,  H04W88/00

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：US06813485B2

公开(公告)日：2004-11-02

申请号：US09838387

申请日：2001-04-20

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： H04B126

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：US06687493B1

公开(公告)日：2004-02-03

申请号：US09293342

申请日：1999-04-16

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： H04B126

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。

公开(公告)号：US06542722B1

公开(公告)日：2003-04-01

申请号：US09293580

申请日：1999-04-16

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： H04B140

CPC分类号： H03C3/38 ,  H03C1/62 ,  H03C3/40 ,  H03D7/00 ,  H04B1/04 ,  H04B7/12 ,  H04B2001/0491

摘要： A method and system is described wherein a signal with a lower frequency is up-converted to a higher frequency. In one embodiment, the higher frequency signal is used as a stable frequency and phase reference. In another embodiment, the invention is used as a transmitter. The 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 as a frequency or phase reference, the oscillating signal is not modulated, and controls a switch that is connected to a bias signal. When the invention is being used in the frequency modulation (FM) or phase modulation (PM) implementations, the oscillating signal is modulated by an information signal before it causes the switch to gate the bias signal. In the amplitude modulation implementation (AM), the oscillating signal is not modulated, but rather causes the switch to gate a reference signal that is substantially equal to or proportional to the information signal. In the FM and PM implementations, the signal that is output from the switch is modulated substantially the same as the modulated oscillating signal. In the AM implementation, the signal that is output from the switch has an amplitude that is a function of the information signal. In both embodiments, the output of the switch is filtered, and the desired harmonic is output.

摘要翻译： 描述了一种方法和系统，其中具有较低频率的信号被上变频到更高的频率。 在一个实施例中，较高频率信号用作稳定的频率和相位参考。 在另一个实施例中，本发明用作发射机。 通过用振荡信号控制开关来实现上变换，振荡信号的频率被选择为所需输出频率的次谐波。 当本发明用作频率或相位参考时，振荡信号不被调制，并且控制连接到偏置信号的开关。 当本发明用于频率调制（FM）或相位调制（PM）实施方案中时，振荡信号在信号信号被调制之前，使开关门偏置偏置信号。 在幅度调制实现（AM）中，振荡信号不被调制，而是使开关栅极基本上等于或者与信息信号成比例的参考信号。 在FM和PM实现中，从开关输出的信号被调制为基本上与调制振荡信号相同。 在AM实现中，从开关输出的信号具有作为信息信号的函数的幅度。 在两个实施例中，开关的输出被滤波，并且输出所需的谐波。

公开(公告)号：US08594228B2

公开(公告)日：2013-11-26

申请号：US13231244

申请日：2011-09-13

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 necessary information to reconstruct the I and Q baseband signals. The differential sampling is performed according to control signals that are phase shifted with respect to each other. The control signals may 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.

摘要翻译： 平衡发射机直接从基带到RF RF转换I和Q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I和Q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，其中每个谐波包含重建I和Q基带信号的必要信息。 根据相对于彼此相移的控制信号进行差分采样。 控制信号可以具有脉冲宽度（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。

公开(公告)号：US08295800B2

公开(公告)日：2012-10-23

申请号：US12876356

申请日：2010-09-07

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：US08224281B2

公开(公告)日：2012-07-17

申请号：US12976477

申请日：2010-12-22

申请人： David F. Sorrells ,  Michael J. Bultman ,  Robert W. Cook ,  Jonathan S. Jensen ,  Martin R. Johnson ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  Jamison L. Young

发明人： David F. Sorrells ,  Michael J. Bultman ,  Robert W. Cook ,  Jonathan S. Jensen ,  Martin R. Johnson ,  Richard C. Looke ,  Charley D. Moses, Jr. ,  Gregory S. Rawlins ,  Michael W. Rawlins ,  Robert T. Short ,  Jamison L. Young

IPC分类号： H04B1/26 ,  H04K3/00

CPC分类号： H04B1/12 ,  H03C3/40 ,  H03D3/006 ,  H03D7/00 ,  H04B1/123 ,  H04B1/28 ,  H04B1/30

摘要： Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also described herein.

摘要翻译： 这里描述了通过使EM信号进行混叠来对电磁（EM）信号进行下变频的方法，系统和装置及其应用。 本文还描述了降低或消除直流偏移电压和下变频电磁（EM）信号时产生的再辐射。 本文还描述了下变频信号和改善接收机动态范围。