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159 条记录 (耗时 0.074 秒)

    Apparatus, system, and method for up-converting electromagnetic signals
    51.
    发明授权
    Apparatus, system, and method for up-converting electromagnetic signals 有权
    用于上变频电磁信号的装置，系统和方法

    公开(公告)号：US07218899B2

    公开(公告)日：2007-05-15

    申请号：US10961253

    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。

    APPARATUS AND METHOD OF DIFFERENTIAL IQ FREQUENCY UP-CONVERSION
    57.
    发明申请
    APPARATUS AND METHOD OF DIFFERENTIAL IQ FREQUENCY UP-CONVERSION 失效
    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。

    Method and circuit for down-converting a signal
    59.
    发明申请
    Method and circuit for down-converting a signal 有权
    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。