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11. 发明申请

US20120253736A1 FEEDBACK COMPENSATION DETECTOR FOR A DIRECT CONVERSION TRANSMITTER 有权
标题翻译：用于直接转换发射机的反馈补偿检测器
公开(公告)号：US20120253736A1
公开(公告)日：2012-10-04
申请号：US13491945
申请日：2012-06-08
申请人： Jorgen S. Nielsen
发明人： Jorgen S. Nielsen
IPC分类号： G06F15/00
CPC分类号： H03C3/40 , H04B1/0475 , H04B1/30
摘要： A feedback compensation detector for a direct conversion transmitter includes a baseband processor, a direct up-converter, an antenna, and an impairment detection and compensation feedback circuit. The baseband processor generates an in-phase (I) baseband signal and a quadrature-phase (Q) baseband signal. The direct up-converter is coupled to the baseband processor, and combines the I and Q baseband signals with an RF carrier signal to generate an RF output signal. The antenna is coupled to the direct up-converter, and transmits the RF output signal. The impairment detection and compensation feedback circuit is coupled to the RF output signal and the I and Q baseband signals. The impairment detection and compensation feedback circuit down-converts the RF output signal to generate an intermediate frequency (IF) signal, measures as least one signal impairment in the IF signal, and pre-distorts the I and Q baseband signals to compensate for the measured signal impairment.
摘要翻译：用于直接转换发射机的反馈补偿检测器包括基带处理器，直接上变频器，天线以及损伤检测和补偿反馈电路。基带处理器产生同相（I）基带信号和正交相位（Q）基带信号。直接上变频器耦合到基带处理器，并且将I和Q基带信号与RF载波信号组合以产生RF输出信号。天线耦合到直接上变频器，并发射RF输出信号。损伤检测和补偿反馈电路耦合到RF输出信号和I和Q基带信号。损伤检测和补偿反馈电路对RF输出信号进行降频转换以产生中频（IF）信号，测量IF信号中的至少一个信号损害，并且预失真I和Q基带信号以补偿所测量的信号障碍。

12. 发明申请

US20120243643A1 APPARATUS AND METHOD OF DIFFERENTIAL IQ FREQUENCY UP-CONVERSION 失效
标题翻译：差分IQ频率上变换的装置和方法
公开(公告)号：US20120243643A1
公开(公告)日：2012-09-27
申请号：US13231244
申请日：2011-09-13
申请人： David F. SORRELLS , Michael J. Bultman , Robert W. Cook , Richad C. Looke , Charley D. Moses, JR. , Gregory S. Rawlins , Michael W. Rawlins
发明人： David F. SORRELLS , Michael J. Bultman , Robert W. Cook , Richad C. Looke , Charley D. Moses, JR. , Gregory S. Rawlins , Michael W. Rawlins
IPC分类号： H04L27/06
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。

13. 发明授权

US08077803B2 Quarter duty cycle pulse generator for interleaved switching mixer 有权
标题翻译：用于交错开关混频器的四分之一工作周期脉冲发生器
公开(公告)号：US08077803B2
公开(公告)日：2011-12-13
申请号：US12056652
申请日：2008-03-27
申请人： Kurt B. Hausmann , Mark A. Kirschenmann , Lillian G. Lent
发明人： Kurt B. Hausmann , Mark A. Kirschenmann , Lillian G. Lent
IPC分类号： H04L27/12
CPC分类号： H04L27/362 , H03C3/40
摘要： An integrated transmit circuit includes a voltage controlled oscillator (702) for generating an input frequency signal (e.g., VCO) that is provided to a divide by two quadrature generator circuit (706) which generates therefrom in-phase and quadrature clocking signals (I, IB, Q, QB) that are applied to control a plurality of transmission gates (711-718) configured in a matched switching topology (710) so as to selectively pass pulses from the input frequency signal, thereby generating interleaved LO pulses (Ø1, Ø1B, . . . Ø4, Ø4B). By applying the interleaved LO pulses to control the transmission gates (26, 28, 30, 32, 34, 36, 38, and 40) in the upmixer (720), the +I, −I, +Q, −Q input signals are interleaved over a plurality of phases of a carrier period to produce differential outputs (42, 44).
摘要翻译：集成发送电路包括用于产生由两个正交发生器电路（706）分频的输入频率信号（例如，VCO）的压控振荡器（702），该正交发生器电路从其生成相位和正交时钟信号（I， IB，Q，QB），用于控制配置在匹配切换拓扑（710）中的多个传输门（711-718），以选择性地传递来自输入频率信号的脉冲，从而产生交错的LO脉冲（Ø1， Ø1B，...Ø4，Ø4B）。通过施加交织的LO脉冲来控制上混合器（720）中的传输门（26,28,30,32,34,36,38和40），+ I，-I，+ Q，-Q个输入信号在载波周期的多个相位上交织以产生差分输出（42,44）。

14. 发明授权

US08077797B2 Method, system, and apparatus for balanced frequency up-conversion of a baseband signal 有权
标题翻译：用于基带信号的平衡上变频的方法，系统和装置
公开(公告)号：US08077797B2
公开(公告)日：2011-12-13
申请号：US12823055
申请日：2010-06-24
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。

15. 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。

16. 发明申请

US20110124302A1 Modulation Method and Apparatus 有权
标题翻译：调制方法和装置
公开(公告)号：US20110124302A1
公开(公告)日：2011-05-26
申请号：US13015157
申请日：2011-01-27
申请人： Sven Mattisson , Magnus Nilsson
发明人： Sven Mattisson , Magnus Nilsson
IPC分类号： H04B1/04 , H03C3/00
CPC分类号： H03C3/40
摘要： A modulation circuit for use in a radiofrequency transmitter includes a local oscillator circuit configured to generate one or more local oscillator signals at a desired frequency and with a duty cycle at or about twenty-five percent, and a modulator configured to generate one or more modulated signals responsive to the one or more local oscillator signals and one or more baseband information signals. In at least one embodiment, the modulation circuit includes a modulator comprising a combined mixing and transconductance circuit that includes a transistor circuit for each baseband information signal serving as a modulation input to the modulator. Each transistor circuit comprises a first transistor driven by the baseband information signal and coupling a modulator output node to a corresponding transconductance element, and a second transistor driven by one of the one or more local oscillator signals and coupling the corresponding transconductance element to a signal ground node.
摘要翻译：用于射频发射机的调制电路包括本地振荡器电路，其被配置为以期望的频率产生一个或多个本地振荡器信号，占空比为或约为百分之二十五，而调制器被配置为产生一个或多个调制响应于一个或多个本地振荡器信号的信号和一个或多个基带信息信号。在至少一个实施例中，调制电路包括一个调制器，该调制器包括组合的混合和跨导电路，其包括用作每个基带信息信号的晶体管电路，用作调制器的调制输入。每个晶体管电路包括由基带信息信号驱动的第一晶体管，并将调制器输出节点耦合到对应的跨导元件，以及由一个或多个本地振荡器信号之一驱动的第二晶体管，并将相应的跨导元件耦合到信号地节点。

17. 发明授权

US07949313B2 Direct conversion device with compensation means for a transmission path of a wireless communication equipment 有权
标题翻译：具有用于无线通信设备的传输路径的补偿装置的直接转换装置
公开(公告)号：US07949313B2
公开(公告)日：2011-05-24
申请号：US11722083
申请日：2005-12-08
申请人： Timothy John Ridgers , Renaud Comte
发明人： Timothy John Ridgers , Renaud Comte
IPC分类号： H01Q11/12 , H04B1/04 , H04B1/26 , H04B1/28
CPC分类号： H03C3/40
摘要： A conversion device (CD) is dedicated to conversion of baseband analog I/Q input signals into RF signals in a transmitting path of a wireless communication equipment. This device (CD) comprises i) first (PP1) and second (PP2) processing paths each comprising i1) an input node (IN1, IN2) receiving an input signal (I/Q), i2) an input path (IP1, IP2) connected to the input node and delivering an input current representative of the input signal (I/Q), i3) an amplification means (A1, A2) having first and second inputs fed with the input current and a common-mode current and outputting an amplified signal, and i4) a transconductor (T1, T2) delivering first and second currents from the amplified signal, the first current feeding a negative feedback path connected to the first input of the amplification means and being essentially equal to the input current, and the second current being a chosen scaled copy of the first current and representative of a voltage difference between the input signals (I/Q), H) a common-mode input path (CIP) connected to the input nodes (IN1, IN2) and delivering the common-mode current from the input signals (I/Q) to feed the second input of each amplification means (A1, A2), and iii) a switch core (SC) for mixing the second current delivered by a chosen one of the transconductors (T1, T2) with a local oscillator RF carrier to deliver output RF signals representative of the input signals (I/Q).
摘要翻译：转换装置（CD）专用于在无线通信设备的发送路径中将基带模拟I / Q输入信号转换成RF信号。该设备（CD）包括i）第一（PP1）和第二（PP2）处理路径，每个处理路径包括i1）接收输入信号（I / Q）的输入节点（IN1，IN2），i2）输入路径（IP1，IP2 ）连接到输入节点并传送代表输入信号（I / Q）的输入电流，i3）具有馈送有输入电流的第一和第二输入和共模电流的放大装置（A1，A2）和输出放大信号，以及i4）从放大的信号传送第一和第二电流的跨导体（T1，T2），所述第一电流馈送连接到所述放大装置的第一输入端并且基本上等于所述输入电流的负反馈路径，并且所述第二电流是所述第一电流的选择的缩放副本，并且代表连接到所述输入节点（IN1，IN2）的输入信号（I / Q），H）之间的电压差，所述共模输入路径（CIP）以及从所述输入信号（I / Q）传送所述共模电流以馈送所述秒每个放大装置（A1，A2）的输入端，以及iii）用于将由选定的一个跨导体（T1，T2）传送的第二电流与本地振荡器RF载波混合的开关磁芯（SC），以输出输出RF信号代表输入信号（I / Q）。

18. 发明申请

US20100195757A1 Apparatus and method of differential IQ frequency up-conversion 有权
标题翻译：差分IQ频率上变换的装置和方法
公开(公告)号：US20100195757A1
公开(公告)日：2010-08-05
申请号：US12662190
申请日：2010-04-05
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： H04B1/04 , 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.
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。

19. 发明授权

US07653145B2 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations 有权
标题翻译：使用通用频率转换技术的无线局域网（WLAN），包括多相实施例和电路实现
公开(公告)号：US07653145B2
公开(公告)日：2010-01-26
申请号：US11041422
申请日：2005-01-25
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： H04L27/04
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。

20. 发明申请

US20090318107A1 DC Offset, Re-Radiation, and I/Q Solutions Using Universal Frequency Translation Technology 有权
标题翻译：直流偏移，再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：US20090318107A1
公开(公告)日：2009-12-24
申请号：US12419465
申请日：2009-04-07
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 , 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。

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