-
公开(公告)号：US08660213B1
公开(公告)日：2014-02-25
申请号：US13709031
申请日：2012-12-09
IPC分类号： H03K9/06
CPC分类号： H04B1/0007 , H04B1/0014
摘要： A wide-frequency band quadrature bandpass-sampling receiver is provided. An RF signal received at the antenna is amplified by an LNA and filtered by an image-reject filter. The filtered RF signal is then frequency-shifted to an intermediate frequency which is located in between 1 GHz to 4 GHz. A quadrature bandpass-sampling analog-to-digital demodulator down-converts and digitizes the frequency-shifted signal at the intermediate frequency to baseband yielding a bi-level in-phase component and a bi-level quadrature component.
摘要翻译： 提供了一种宽频带正交带通采样接收机。 在天线处接收到的RF信号被LNA放大，并由图像拒绝滤波器滤波。 滤波的RF信号然后被频移到位于1GHz至4GHz之间的中频。 正交带通采样模/数解调器将中频处的频移信号下变频并数字化到基带，产生双电平同相分量和双电平正交分量。
-
2.发明授权Apparatus and method for calibrating the I/Q mismatch in a quadrature bandpass sampling receiver 失效用于校正正交带通采样接收机中的I / Q失配的装置和方法公开(公告)号：US08660170B1
公开(公告)日：2014-02-25
申请号：US13709036
申请日：2012-12-09
IPC分类号： H04B3/46
摘要： A calibration technique to compensate for the quadrature phase error between the in-phase and quadrature sampling clocks controlling the quadrature bandpass sampling delta-sigma analog-to-digital demodulator (QBS-ADD) is provided. A low-frequency test tone is injected in the feedback path, up-converted to the radio frequency (RF) frequency, and added to the input of the QBS-ADD. The test tone is demodulated by the QBS-ADD into an in-phase signal and a quadrature signal. The in-phase and quadrature signals are converted into the frequency domain by the discrete Fourier transform. The quadrature phase error is quantified based on the complex Fourier complex coefficients; and the phase difference between the in-phase and quadrature sampling clocks is corrected.
摘要翻译： 提供了一种用于补偿控制正交带通采样Δ-Σ模数转换器（QBS-ADD）的同相和正交采样时钟之间的正交相位误差的校准技术。 低频测试音被注入到反馈路径中，上变频到射频（RF）频率，并加到QBS-ADD的输入端。 测试音被QBS-ADD解调为同相信号和正交信号。 通过离散傅里叶变换将同相和正交信号转换成频域。 基于复傅立叶复数系数量化正交相位误差; 校正同相和正交采样时钟之间的相位差。
-
公开(公告)号：US08687736B1
公开(公告)日：2014-04-01
申请号：US13709035
申请日：2012-12-09
摘要： A multi-channel quadrature bandpass-sampling receiver is provided with a plurality of RF signals that are modulated at different carrier frequencies, are frequency-shifted, and are staggered to a first IF frequency. A quadrature bandpass-sampling analog-to-digital demodulator digitizes and down-converts the aggregate RF signals to a second low IF frequency, wherein each frequency-shifted RF signal can be demodulated to DC by a digital down converter.
摘要翻译： 多通道正交带通采样接收器具有在不同载波频率下被调制的多个RF信号，被频移，并交错到第一IF频率。 正交带通采样模数/数字解调器将聚合RF信号数字化和下转换为第二低IF频率，其中每个频移RF信号可以通过数字下变频器被解调为DC。
-
公开(公告)号：US08687739B1
公开(公告)日：2014-04-01
申请号：US13711665
申请日：2012-12-12
IPC分类号： H04L27/00
CPC分类号： H04L27/0002 , H03M3/40 , H03M3/408 , H04L27/34
摘要： A quadrature bandpass-sampling radio frequency (RF) receiver is provided. The receiver bandpass-samples and quantizes an RF signal to provide an in-phase bi-level digital signal based on an in-phase clock and a quadrature bi-level digital signal based on a quadrature clock. The in-phase clock frequency and the quadrature clock frequency are equal to the RF signal carrier frequency. The quadrature clock is ninety degree out of phase with respect to the in-phase clock.
摘要翻译： 提供了正交带通采样射频（RF）接收机。 接收机对RF信号进行带通采样和量化，以基于同相时钟和基于正交时钟的正交双电平数字信号提供同相双电平数字信号。 同相时钟频率和正交时钟频率等于RF信号载波频率。 正交时钟相对于同相时钟是90度异相。
-
5.发明授权公开(公告)号：US08681030B1
公开(公告)日：2014-03-25
申请号：US13709038
申请日：2012-12-09
CPC分类号： H03M3/408 , H01L23/5227 , H01L23/645 , H01L23/66 , H01L24/06 , H01L24/48 , H01L24/49 , H01L28/10 , H01L2224/05554 , H01L2224/48091 , H01L2224/48237 , H01L2224/49113 , H01L2924/00014 , H01L2924/30107 , H03H7/0115 , H01L2924/00 , H01L2224/45099 , H01L2224/05599
摘要： Apparatuses for composing LC resonators in a continuous-time RF bandpass delta-sigma modulator are provided. A plurality of resonator inductors are shaped and strategically positioned on an integrated circuit die to minimize the resonant couplings. The resonator inductors can be also constructed from pairs of bond wires connected to a ground paddle, or to a set of lead frame pins. The inductance in each resonator can be increased by appending a specifically shaped planer inductor constructed from the PCB metal track to the bond wire pair via two lead frame pins.
摘要翻译： 提供了用于在连续时间RF带通Δ-Σ调制器中组合LC谐振器的装置。 多个谐振电感器成形并且策略性地定位在集成电路管芯上，以使谐振耦合最小化。 谐振电感器还可以由连接到接地焊盘的一对接合线或一组引线框架引脚构成。 通过将由PCB金属轨道构成的特殊形状的平面电感器通过两个引线框架引脚附加到接合线对，可以增加每个谐振器中的电感。
-
公开(公告)号：US08660198B1
公开(公告)日：2014-02-25
申请号：US13709034
申请日：2012-12-09
CPC分类号： H04L27/265 , H04L27/2331
摘要： A quadrature bandpass-sampling receiver providing time diversity for OFDM is provided. A quadrature bandpass-sampling analog-to-digital demodulator down converts an OFDM signal in the RF frequency range to baseband based on a high-frequency sampling clock equal to the RF frequency and generates the in-phase and quadrature outputs in form of high-frequency bit streams. The period of the bit stream is the inverse of the OFDM carrier frequency, which is much higher than the OFDM symbol rate, allows usage of multipath diversity to improve the communication link.
摘要翻译： 提供了提供OFDM的时间分集的正交带通采样接收机。 正交带通采样模/数解调器将RF频率范围内的OFDM信号基于等于RF频率的高频采样时钟转换为基带，并以高频采样时钟的形式产生高频， 频率比特流。 比特流的周期是OFDM载波频率的倒数，其比OFDM符号速率高得多，允许使用多径分集来改善通信链路。
-
公开(公告)号：US08705667B1
公开(公告)日：2014-04-22
申请号：US13714543
申请日：2012-12-14
IPC分类号： H04L27/06
CPC分类号： H04B1/7115
摘要： Apparatus and method for rake receiving in a quadrature bandpass-sampling RF receiver is provided. The receiver bandpass-samples and quantizes an RF signal to provide an in-phase bi-level digital signal based on an in-phase clock and a quadrature bi-level digital signal based on a quadrature clock. The in-phase clock frequency and the quadrature clock frequency are equal to the RF signal carrier frequency. The quadrature clock is ninety degree out of phase with respect to the in-phase clock. The delayed bits in both the in-phase digital signal group and the quadrature digital signal group are maximal-ratio combined to provide diversity gain.
摘要翻译： 提供了一种在正交带通采样RF接收机中进行耙式接收的装置和方法。 接收机对RF信号进行带通采样和量化，以基于同相时钟和基于正交时钟的正交双电平数字信号提供同相双电平数字信号。 同相时钟频率和正交时钟频率等于RF信号载波频率。 正交时钟相对于同相时钟是90度异相。 同相数字信号组和正交数字信号组中的延迟位都是最大比组合以提供分集增益。
-
8.发明授权Apparatus and method for calibrating the I/Q mismatch in a quadrature bandpass sampling receiver 失效用于校正正交带通采样接收机中的I / Q失配的装置和方法公开(公告)号：US08687684B1
公开(公告)日：2014-04-01
申请号：US13718101
申请日：2012-12-18
CPC分类号： H04L27/3863 , H03D3/009 , H03M3/382 , H03M3/40 , H03M3/41 , H04B17/11 , H04L2027/0032 , H04L2027/0057 , H04L2027/0067
摘要： A calibration technique to compensate for the phase error between the in-phase and quadrature sampling clocks controlling the quadrature bandpass sampling delta-sigma analog-to-digital demodulator (QBS-ADD) is provided. A low-frequency test tone is injected, up-converted to the RF frequency, and added to an input of the QBS-ADD. The test tone is demodulated by the QBS-ADD into an in-phase signal and a quadrature signal. The in-phase and quadrature signals are filtered and multiplied together to generate a phase error signal, which is subsequently integrated to generate a phase shift control signal being used to correct the phase error between the in-phase and quadrature sampling clocks.
摘要翻译： 提供了一种用于补偿控制正交带通采样Δ-Σ模数转换解调器（QBS-ADD）的同相和正交采样时钟之间的相位误差的校准技术。 注射低频测试音，上变频到RF频率，并添加到QBS-ADD的输入。 测试音被QBS-ADD解调为同相信号和正交信号。 同相和正交信号被滤波并相乘以产生相位误差信号，该相位误差信号随后被积分以产生用于校正同相和正交采样时钟之间的相位误差的相移控制信号。
-
公开(公告)号：US08660214B1
公开(公告)日：2014-02-25
申请号：US13709033
申请日：2012-12-09
IPC分类号： H04L27/00
CPC分类号： H04L27/2647 , G06F17/141 , H04L27/263
摘要： A quadrature bandpass-sampling receiver for an orthogonal frequency division multiplexing (OFDM) receiver is provided. A transmitted OFDM signal is received by a low-noise amplifier, has its image frequency removed by a subsequent image reject filter, and is frequency-translated to an intermediate frequency by a mixer. A quadrature bandpass-sampling delta-sigma analog-to-digital demodulator (QBS-ADD) down-converts the frequency-translated OFDM signal to baseband based on a high-frequency sampling clock equal to the intermediate frequency, and generates in-phase and quadrature outputs in the form of high-frequency bit streams. The bit streams are fed to a Discrete Fourier Transform (DFT) engine, which generates in-phase and quadrature Fourier components.
摘要翻译： 提供了一种用于正交频分复用（OFDM）接收机的正交带通采样接收机。 传输的OFDM信号由低噪声放大器接收，其图像频率由随后的图像抑制滤波器去除，并且通过混频器被频率转换为中频。 正交带通采样Δ-Σ模数数字解调器（QBS-ADD）基于等于中频的高频采样时钟将频率转换的OFDM信号下变频到基带，并产生同相和 高频比特流形式的正交输出。 比特流被馈送到离散傅里叶变换（DFT）引擎，其产生同相和正交傅立叶分量。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.014 秒)
