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71. 发明授权

US07911266B2 Low complexity and low power phase shift keying demodulator structure 有权
标题翻译：低复杂度和低功耗相移键控解调器结构
公开(公告)号：US07911266B2
公开(公告)日：2011-03-22
申请号：US12355812
申请日：2009-01-19
申请人： Cihun-Siyong Gong , Muh-Tian Shiue , Kai-Wen Yao
发明人： Cihun-Siyong Gong , Muh-Tian Shiue , Kai-Wen Yao
IPC分类号： H03D3/00
CPC分类号： H03D3/006
摘要： A low complexity and low power phase shift keying demodulator structure includes a digitizer, a phase-transition-independent carrier clock extractor, a binary correlater, a delay element, and a sampler. The digitizer digitizes a BPSK signal for an output waveform. The phase-transition-independent carrier clock extractor detects the phase transition on the output of the digitizer and produces a carrier clock signal. The binary correlater has correlated processes to the output signal of the digitizer and carrier clock signal obtained from the phase-transition-independent carrier clock extractor. The sampler samples the signal from the binary correlater according to the signal from the delay element in order to finish the demodulation with only a small capacitance.
摘要翻译：低复杂度和低功率相移键控解调器结构包括数字转换器，相移独立载波时钟提取器，二进制相关器，延迟元件和采样器。数字转换器将输出波形的BPSK信号数字化。相位转移无关载波时钟提取器检测数字转换器输出端的相位转换，产生载波时钟信号。二进制相关器具有与数字转换器的输出信号和从相变非独立载波时钟提取器获得的载波时钟信号的相关处理。采样器根据来自延迟元件的信号对来自二进制相关器的信号进行采样，以完成仅具有小电容的解调。

72. 发明授权

US07847597B1 Precision frequency change detector 有权
标题翻译：精密变频检测器
公开(公告)号：US07847597B1
公开(公告)日：2010-12-07
申请号：US12456287
申请日：2009-06-15
申请人： Yat C. Chan , James C. Camparo , Walter A. Johnson , Christine Humphries, legal representative , Albert M. Young , Sarunas K. Karuza
发明人： Yat C. Chan , James C. Camparo , Walter A. Johnson , Albert M. Young , Sarunas K. Karuza
IPC分类号： G01R23/02 , H03D3/00 , H03K9/06
CPC分类号： G01R29/26 , G01R23/00 , G01R23/14 , G01R25/00
摘要： A frequency change detector splits a frequency standard signal into two undelayed frequency signals, one of which is delayed by a predetermined amount. The delayed signal is then mixed with the undelayed frequency signal into a mixed signal that is further filtered and amplified for providing an output signal indicating frequency changes of the frequency standard signal. The mixed frequency signal indicates frequency changes of the original frequency standard signal without reference to another frequency standard. This frequency change detector is well suited for use on satellites as an early warning detection of changes in on-board atomic frequency standards.
摘要翻译：频率变化检测器将频率标准信号分成两个未延迟的频率信号，其中一个延迟了预定的量。然后将延迟的信号与未延迟的频率信号混合成混合信号，该混合信号被进一步滤波和放大，以提供指示频率标准信号的频率变化的输出信号。混频信号表示原频率标准信号的频率变化，不参考另一频率标准。该频率变化检测器非常适合用于卫星，作为车载原子频率标准变化的早期预警检测。

73. 发明申请

US20100290550A1 METHOD, A TRANSMITTING STATION, A RECEIVING STATION AND A PREAMBLE STRUCTURE FOR COMMUNICATING A SIGNAL USING ANALOG BEAM STEERING 有权
标题翻译：方法，发射站，接收站和使用模拟光束转向通信信号的前置结构
公开(公告)号：US20100290550A1
公开(公告)日：2010-11-18
申请号：US12863229
申请日：2009-01-21
申请人： Ronald Rietman , Ying Wang
发明人： Ronald Rietman , Ying Wang
IPC分类号： H04K1/10 , H03D3/00 , H04L27/00
CPC分类号： H04B7/0851 , H04B7/0404 , H04B7/0617 , H04B7/0634 , H04B7/086
摘要： The present invention relates to a method for communicating a signal to a first station from a second station, the stations having antenna array. For communication in bands like 60 GHz, it is advisable to carry out analog beam steering. But it is needed to compute all the beam forming weights in a single message. Then, the invention-proposes that for each signal, in the preamble, a plurality of training symbols are included, wherein during each training symbol repetition, the receiving station adjusts at least one antenna parameter of the plurality of antennas and measuring the combined signal for computing a set of antenna weights to be applied for an analog beam forming on the antenna array for receiving and/or transmitting the data field.
摘要翻译：本发明涉及一种用于从第二站向第一站传送信号的方法，所述站具有天线阵列。对于60 GHz频段的通信，建议进行模拟波束转向。但是需要在单个消息中计算所有的波束形成权重。然后，本发明提出，对于每个信号，在前导码中包括多个训练符号，其中在每个训练符号重复期间，接收站调整多个天线中的至少一个天线参数并测量组合信号计算要应用于在天线阵列上形成的模拟波束的天线权重集合，用于接收和/或发送数据字段。

74. 发明申请

US20100219865A1 FREQUENCY DETECTION APPARATUS AND METHOD 有权
标题翻译：频率检测装置和方法
公开(公告)号：US20100219865A1
公开(公告)日：2010-09-02
申请号：US12712806
申请日：2010-02-25
申请人： Chen-Chih HUANG
发明人： Chen-Chih HUANG
IPC分类号： H03D3/00
CPC分类号： G01R23/09
摘要： A frequency detection apparatus and method are provided. The frequency detection apparatus includes a frequency conversion circuit and an analog conversion circuit. The frequency conversion circuit receives an input clock, and generates an analog signal corresponding to a frequency of the input clock based on the frequency of the input clock. The analog conversion circuit is coupled to the frequency conversion circuit, receives the analog signal, and generates a discriminating signal corresponding to the frequency of the input clock based on the analog signal, where the discriminating signal represents a frequency interval of the input clock.
摘要翻译：提供了一种频率检测装置和方法。频率检测装置包括频率转换电路和模拟转换电路。频率转换电路接收输入时钟，并且基于输入时钟的频率生成与输入时钟的频率对应的模拟信号。模拟转换电路耦合到频率转换电路，接收模拟信号，并根据模拟信号产生与输入时钟的频率对应的识别信号，鉴别信号表示输入时钟的频率间隔。

75. 发明授权

US07751504B2 Frequency modulation-frequency shift keying demodulator 有权
标题翻译：频率调频 - 频移键控解调器
公开(公告)号：US07751504B2
公开(公告)日：2010-07-06
申请号：US11476736
申请日：2006-06-29
申请人： Kai-Cheung Juang
发明人： Kai-Cheung Juang
IPC分类号： H03D3/00 , H04L27/14
CPC分类号： H04L27/142
摘要： A frequency modulation-frequency shift keying (FM/FSK) demodulator is provided, including a modulation signal input terminal for receiving a first modulation signal; a phase shifter for receiving the first modulation signal and then shifting its phase to output a second modulation signal; a multiplier connected to the modulation signal input terminal and the output of the phase shifter for multiplying the first modulation signal and the second modulation signal together to output a demodulation signal; an adder having at least two input terminals and an output terminal where the first input terminal receives the demodulation signal; a direct current (DC) compensation unit connected to the output terminal of the adder for compensating the DC of the demodulation signal and low-frequency offsets, and a demodulation signal output terminal connected to the output of the adder for outputting the demodulation signal.
摘要翻译：提供了一种频率调制 - 频移键控（FM / FSK）解调器，包括用于接收第一调制信号的调制信号输入端; 移相器，用于接收第一调制信号，然后移相以输出第二调制信号; 连接到调制信号输入端的乘法器和用于将第一调制信号和第二调制信号相乘的移相器的输出一起输出解调信号; 具有至少两个输入端的加法器和第一输入端接收解调信号的输出端; 连接到加法器的输出端的直流（DC）补偿单元，用于补偿解调信号的DC和低频偏移;以及解调信号输出端，连接到加法器的输出端，用于输出解调信号。

76. 发明申请

US20100090761A1 PSK DEMODULATOR USING TIME-TO-DIGITAL CONVERTER 失效
标题翻译：使用时间到数字转换器的PSK DEMODULATOR
公开(公告)号：US20100090761A1
公开(公告)日：2010-04-15
申请号：US12511323
申请日：2009-07-29
申请人： Sang Jin Byun , Jae Hoon Shim , Hyun Kyu Yu
发明人： Sang Jin Byun , Jae Hoon Shim , Hyun Kyu Yu
IPC分类号： H03D3/00
CPC分类号： H04L27/233 , H04L27/2338
摘要： A PSK demodulator using a time-to-digital converter includes: a filter unit that performs band pass filtering on a PSK signal; an amplitude limiting unit that limits the amplitude of an output signal of the filter unit; a clock signal generating unit that generates a clock signal; and a time-to-digital converter that samples the phase of an output signal of the amplitude limiting unit according to the clock signal and outputs a digital signal having a value corresponding to the phase of the PSK signal. Power consumption can be reduced and a circuit implementation can be simplified.
摘要翻译：使用时间 - 数字转换器的PSK解调器包括：对PSK信号执行带通滤波的滤波器单元; 幅度限制单元，限制滤波器单元的输出信号的幅度; 时钟信号生成单元，生成时钟信号; 以及时间 - 数字转换器，其根据时钟信号对幅度限制单元的输出信号的相位进行采样，并输出具有与PSK信号的相位对应的值的数字信号。可以降低功耗并简化电路实现。

77. 发明申请

US20100086081A1 MODULATION DEVICE AND DEMODULATION DEVICE 失效
标题翻译：调制装置和解调装置
公开(公告)号：US20100086081A1
公开(公告)日：2010-04-08
申请号：US12524678
申请日：2008-01-30
申请人： Suguru Fujita , Lei Huang , Ping Luo
发明人： Suguru Fujita , Lei Huang , Ping Luo
IPC分类号： H04L27/04 , H03C1/52 , H03C3/00 , H04L27/12 , H03D1/24 , H03D3/00
CPC分类号： H04L27/02 , H04L27/0008 , H04L27/18 , H04L2027/0016
摘要： Provided is a modulation device which generates a phase modulation signal and an amplitude modulation signal and can correct an I/Q orthogonal shift and reduce degradation of the ON/OFF ratio. In the device, a phase shifter (174) controls voltage applied to a capacitor in accordance with a control signal outputted from a phase control unit (180) and adjusts the capacitance so as to shift the phase of a carrier generated by an oscillator (173). The phase control unit (180) estimates a phase shift of a phase shifter (174) in accordance with an output RF signal (S140) by using the phase shift estimation method. Furthermore, the phase control unit (180) performs tuning of the phase shifter (174) according to the estimated value of the phase shift of the phase shifter (174) so that a phase difference between carries of an I signal (S125) and a Q signal (S135) is 90 degrees.
摘要翻译：提供一种调制装置，其产生相位调制信号和幅度调制信号，并且可以校正I / Q正交位移并减少ON / OFF比的劣化。在该装置中，移相器（174）根据从相位控制单元（180）输出的控制信号来控制施加到电容器的电压，并且调整电容以便移位由振荡器（173）产生的载波的相位）。相位控制单元（180）通过使用相移估计方法，根据输出RF信号（S140）来估计移相器（174）的相移。此外，相位控制单元（180）根据移相器（174）的相移的推定值进行移相器（174）的调谐，使得I信号（S125）和 Q信号（S135）为90度。

78. 发明授权

US07663431B2 Tuner and demodulating unit thereof 失效
标题翻译：调谐器及其解调单元
公开(公告)号：US07663431B2
公开(公告)日：2010-02-16
申请号：US10572552
申请日：2005-03-22
申请人： Hye-Ryung Lee
发明人： Hye-Ryung Lee
IPC分类号： H03D3/00
CPC分类号： H04N5/455
摘要： A tuner and a demodulating unit thereof are provided. A trap filter for a specific frequency is installed in the IF demodulating unit so as to eliminate a frequency signal acting as a beat component.
摘要翻译：提供了调谐器及其解调单元。用于特定频率的陷波滤波器安装在IF解调单元中，以消除作为拍频分量的频率信号。

79. 发明授权

US07623595B1 Digital technique of compensating mismatches between in phase and quadrature channels 失效
标题翻译：补偿同相和正交通道之间的失配的数字技术
公开(公告)号：US07623595B1
公开(公告)日：2009-11-24
申请号：US10975594
申请日：2004-10-27
申请人： Runsheng He
发明人： Runsheng He
IPC分类号： H03D3/00 , H04L27/00 , H04B1/10
CPC分类号： H04L27/3863
摘要： Methods and systems for filtering an input signal include receiving a first demodulated signal produced by multiplying a first generated signal with a received input signal, receiving a second demodulated signal produced by multiplying a second generated signal with the received input signal, and producing first and second filtered output signals by applying a transfer function to the first and second demodulated signals, wherein the transfer function comprises a first filtering coefficient, wherein the first filtering coefficient defines a matrix comprising one or more non-symmetrical terms. An application of the transfer function can compensate for one or more of an amplitude mismatch between the first and second generated signals, a phase mismatch between the first and second generated signals, and one or more frequency handling characteristics of channels used to produce the first and second demodulated signals.
摘要翻译：用于滤波输入信号的方法和系统包括：接收通过将第一产生信号与接收到的输入信号相乘产生的第一解调信号，接收通过将第二产生信号与接收到的输入信号相乘产生的第二解调信号，以及产生第一和第二通过对第一和第二解调信号应用传递函数来滤波输出信号，其中传递函数包括第一滤波系数，其中第一滤波系数定义包括一个或多个非对称项的矩阵。传递函数的应用可以补偿第一和第二生成信号之间的幅度失配中的一个或多个，第一和第二生成信号之间的相位失配以及用于产生第一和第二信号的信道的一个或多个频率处理特性第二解调信号。

80. 发明申请

US20090262864A1 SYMMETRICAL DATA SIGNAL PROCESSING 有权
标题翻译：对称数据信号处理
公开(公告)号：US20090262864A1
公开(公告)日：2009-10-22
申请号：US12465322
申请日：2009-05-13
申请人： Hong Liu , Raul A. Casas , Haosong FU
发明人： Hong Liu , Raul A. Casas , Haosong FU
IPC分类号： H03D3/00
CPC分类号： H04L25/03171 , H04L25/0212 , H04L27/04 , H04L2025/03382 , H04L2025/03522
摘要： In a digital communications receiver configured to receive, via a communications channel, a received first signal representing a sequence of symbols, each symbol being encoded to be representative of data bits, a method of processing the received signal includes adjusting a magnitude, filtering, and applying cyclic prefix restoration, to the received signal to produce a second signal, converting the second signal from time domain to frequency domain to produce a frequency domain signal, and determining a first quantity of values representing a first portion of the symbols by evaluating a relationship of channel values representing characteristics of the communications channel and a second quantity of values representing a portion of the frequency domain signal, the first quantity being smaller than the second quantity.
摘要翻译：在被配置为经由通信信道接收表示符号序列的每个符号被编码为表示数据比特的数字通信接收机中，处理接收信号的方法包括调整幅度，滤波和对所接收的信号应用循环前缀恢复以产生第二信号，将所述第二信号从时域转换到频域以产生频域信号，以及通过评估所述符号的关系来确定表示所述符号的第一部分的第一数量的值表示所述通信信道的特性的信道值和表示所述频域信号的一部分的第二数量值，所述第一数量小于所述第二数量。

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