专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08571135B2 Method, system and apparatus for balanced frequency up-conversion of a baseband signal 有权
标题翻译：用于基带信号平衡上变频的方法，系统和装置
公开(公告)号：US08571135B2
公开(公告)日：2013-10-29
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： H04L27/04 , 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。

2. 发明授权

US08223898B2 Method and system for down-converting an electromagnetic signal, and transforms for same 有权
标题翻译：用于下变频电磁信号的方法和系统，并对其进行转换
公开(公告)号：US08223898B2
公开(公告)日：2012-07-17
申请号：US12776173
申请日：2010-05-07
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： 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。

3. 发明授权

US08019291B2 Method and system for frequency down-conversion and frequency up-conversion 有权
标题翻译：频率下变频和上变频的方法和系统
公开(公告)号：US08019291B2
公开(公告)日：2011-09-13
申请号：US12435595
申请日：2009-05-05
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
IPC分类号： G06F15/16
CPC分类号： H03C1/36 , H03C3/38 , H03D7/00 , H03D7/125 , 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。

4. 发明授权

US07936022B2 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：US07936022B2
公开(公告)日：2011-05-03
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, 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： H01L21/70
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。

5. 发明授权

US07218907B2 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：US07218907B2
公开(公告)日：2007-05-15
申请号：US11173021
申请日：2005-07-05
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
IPC分类号： H04B1/04 , H01Q11/12
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。

6. 发明授权

US07039372B1 Method and system for frequency up-conversion with modulation embodiments 有权
公开(公告)号：US07039372B1
公开(公告)日：2006-05-02
申请号：US09548923
申请日：2000-04-13
申请人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
发明人： David F. Sorrells , Michael J. Bultman , Robert W. Cook , Richard C. Looke , Charley D. Moses, Jr.
IPC分类号： H04B1/04
CPC分类号： H03D7/00 , H03C1/62 , H04B1/04 , H04B7/12 , H04B2001/0491
摘要： A method and system is described wherein an information signals is gated at a frequency that is a sub-harmonic of the frequency of the desired output signal. In the modulation embodiments, the information signal is modulated as part of the up-conversion process. In a first modulation embodiment, one information signal is phase modulated onto the carrier signal as part of the up-conversion process. In a second modulation embodiment, two information signals are multiplied, and, as part of the up-conversion process, one signal is phase modulated onto the carrier and the other signal is amplitude modulated onto the carrier. In a third modulation embodiment, one information signal is phase modulated onto the “I” phase of the carrier signal as part of the up-conversion process and a second information signal is phase modulated onto the “Q” phase of the carrier as part of the up-conversion process. In a fourth modulation embodiment, four information signals are phase and amplitude modulated onto the “I” and “Q” phases of the carrier as part of the up-conversion process. There are at least two implementations of each of the aforementioned embodiments.

7. 发明授权

US07027786B1 Carrier and clock recovery using universal frequency translation 失效
标题翻译：使用通用频率转换的载波和时钟恢复
公开(公告)号：US07027786B1
公开(公告)日：2006-04-11
申请号：US09567978
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
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
IPC分类号： H04B17/02
CPC分类号： H03D7/00
摘要： Coherent detection of a received EM signal using universal frequency translation (UFT) is described herein. The received EM signal is sampled according to a sub-harmonic LO signal, where the LO signal is in frequency and phase coherence with the received EM signal. The coherent receiver includes a down-converter/demodulator and a synthesizer/loop filter that are both implemented using UFT technology. The down-converter/demodulator samples the EM input signal using a UFT module according to the coherent sub-harmonic LO signal that is generated by the synthesizer/loop filter. The synthesizer/loop filter generates the coherent LO signal using a phase detector, a loop filter, and an up-converter. The phase detector and up-converter are implemented using UFT modules.
摘要翻译：本文描述了使用通用频率转换（UFT）接收的EM信号的相干检测。接收的EM信号根据子谐波LO信号进行采样，其中LO信号与接收的EM信号处于频率和相位相干性。相干接收机包括使用UFT技术实现的下变频器/解调器和合成器/环路滤波器。下变频器/解调器根据由合成器/环路滤波器产生的相干次谐波LO信号，使用UFT模块对EM输入信号进行采样。合成器/环路滤波器使用相位检测器，环路滤波器和上变频器产生相干LO信号。相位检测器和上变频器使用UFT模块实现。

8. 发明授权

US06879817B1 DC offset, re-radiation, and I/Q solutions using universal frequency translation technology 有权
标题翻译： DC偏移，重新辐射和使用通用频率转换技术的I / Q解决方案
公开(公告)号：US06879817B1
公开(公告)日：2005-04-12
申请号：US09526041
申请日：2000-03-14
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： H03C3/40 , H03D3/00 , H03D7/00 , H04B1/12 , H04B1/28 , H04B1/30 , H04B1/10
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。

9. 发明授权

US06798351B1 Automated meter reader applications of universal frequency translation 失效
标题翻译：自动测量仪应用通用频率转换
公开(公告)号：US06798351B1
公开(公告)日：2004-09-28
申请号：US09543867
申请日：2000-04-05
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. 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. Silver
IPC分类号： G08C1702
CPC分类号： H03D7/00 , H04B7/155
摘要： Frequency translation and applications of same are described herein, including RF modem and wireless local area network (WLAN) applications. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal reception, unified down-conversion and filtering, and combinations and applications of same.
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。这样的应用包括但不限于降频转换，上变频，增强信号接收，统一下变频和滤波，以及它们的组合和应用。

10. 发明授权

US06704549B1 Multi-mode, multi-band communication system 有权
标题翻译：多模，多频通信系统
公开(公告)号：US06704549B1
公开(公告)日：2004-03-09
申请号：US09476330
申请日：2000-01-03
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. 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. Silver
IPC分类号： H04B166
CPC分类号： H03D7/00
摘要： The present invention is directed toward the transmission subsystem of a multi-mode, multi-band communication system that can transmit and/or receive one or more information signals on one or more transmission frequencies using one or more modulation schemes. According to embodiments of the invention, the up-conversion section is implemented using a universal frequency translator (UFT).
摘要翻译：本发明涉及可以使用一个或多个调制方案在一个或多个传输频率上发送和/或接收一个或多个信息信号的多模式多频带通信系统的传输子系统。根据本发明的实施例，上变频部分使用通用频率转换器（UFT）来实现。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式