公开(公告)号：US20190097664A1

公开(公告)日：2019-03-28

申请号：US15716430

申请日：2017-09-26

申请人： Apple Inc.

发明人： Xinping ZENG ,  Mohit Narang ,  Peter M. Agboh ,  Vusthla Sunil Reddy

IPC分类号： H04B1/30 ,  H03H7/06

CPC分类号： H04B1/30 ,  H03D1/00 ,  H03D1/22 ,  H03D3/005 ,  H03D3/008 ,  H03H7/06 ,  H04B5/0081 ,  H04B2001/305

摘要： A transceiver that allows dynamic high-pass filter (HPF) cut-off frequency adjustment may include a mixer circuit to mix a local oscillator (LO) signal with a receive (RX) signal received from a transmitter to generate a baseband signal. The transceiver may further include a high-pass filter (HPF) having an adjustable cut-off frequency that is used to reduce a DC offset of the baseband signal. A control circuit can dynamically control components of the HPF to set the adjustable cut-off frequency at a first frequency during a first time period and at a second frequency during a second time period.

公开(公告)号：US20180019782A1

公开(公告)日：2018-01-18

申请号：US15474758

申请日：2017-03-30

申请人： Samsung Electronics Co., Ltd.

发明人： Seok Ju YUN

IPC分类号： H03G3/30 ,  H03B5/12 ,  H03F1/56 ,  H03B5/32 ,  H03F3/19 ,  H03F3/24 ,  H03B5/24

CPC分类号： H04B1/406 ,  H03B5/08 ,  H03B5/1234 ,  H03B5/1237 ,  H03B5/24 ,  H03B5/32 ,  H03D1/00 ,  H03F1/565 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/222 ,  H03F2200/294 ,  H03F2200/387 ,  H03F2200/451 ,  H03G3/3042

摘要： A radio frequency (RF) transceiver includes a first oscillator configured to generate a first oscillation frequency associated with an RF signal, a second oscillator configured to generate a second oscillation frequency associated with a clock frequency, a counter configured to generate a counter output signal using the first oscillation frequency and the second oscillation frequency, and a comparer configured to generate a digital output signal associated with the RF signal by comparing an output value of the counter output signal to a reference value.

公开(公告)号：US09860017B2

公开(公告)日：2018-01-02

申请号：US14991452

申请日：2016-01-08

申请人： Samsung Electronics Co., Ltd.

发明人： Hyuk-Jun Sung

IPC分类号： H04L1/00 ,  H04L7/00 ,  H03D1/00 ,  H04K1/00

CPC分类号： H04L1/0046 ,  H03D1/00 ,  H04B1/0007 ,  H04B1/1027 ,  H04K1/00 ,  H04L1/00 ,  H04L1/0075 ,  H04L7/00

摘要： A method of generating data is provided. The method includes providing, by a peak comparator, a searcher enable signal and peak comparator output data based on result values that are generated by multiplying an input signal having a plurality of levels and a predetermined convolution pattern, providing by a start pattern searcher, a data determiner enable signal by comparing the peak comparator output data and a predetermined start pattern according to the searcher enable signal; and providing, by a data determiner, result data corresponding to the input signal based on the data determiner enable signal, the input signal and a predetermined filter mask pattern.

公开(公告)号：US20170222767A1

公开(公告)日：2017-08-03

申请号：US15141324

申请日：2016-04-28

申请人： Innoventure L.P.

发明人： David K Nienaber

IPC分类号： H04L1/20 ,  H04B1/06

CPC分类号： H04L1/206 ,  G01R23/167 ,  H03D1/00 ,  H03D2200/006 ,  H03D2200/0062 ,  H04B1/0021 ,  H04B1/06 ,  H04B2001/0491 ,  H04L1/08

摘要： A method and system for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, including developing a local clock signal which correlates in time to the modulated signal and includes a number of phase sectors per cycle and converting the modulated signal into a current that is representative of the signal and routing the current to the inverting input of an amplifier and charging one of a plurality of capacitive devices during each phase sector and sequentially connecting the capacitive devices between the output of the amplifier and the inverting input of the amplifier in non-overlapping sequences, the total of sequences being equal to one full cycle of the clock.

公开(公告)号：US09209845B2

公开(公告)日：2015-12-08

申请号：US14103936

申请日：2013-12-12

申请人： Broadcom Corporation

发明人： Markus Rudiger Nentwig ,  Jouni Kristian Kaukovuori

IPC分类号： H04B1/26 ,  H04B1/10

CPC分类号： H04B1/10 ,  H03D1/00 ,  H03D3/008 ,  H03D3/009 ,  H03D7/165 ,  H03D2200/0045 ,  H04B1/30 ,  H04B2001/305

摘要： Technique for calibration of a frequency converter for reducing a leakage-based non-direct-current component at an output of the frequency converter. In an apparatus comprising a frequency converter arranged to perform frequency conversion on an input signal, a local oscillator signal generator arranged to generate an amplitude-modulated local oscillator signal of the frequency converter, and a detector arranged to detect a non-direct-current component of an output signal of the frequency converter, which results from the amplitude-modulated local oscillator signal, an amplitude modulation of an original local oscillator signal by the local oscillator signal generator is controlled, a magnitude of local oscillator leakage of the frequency converter is observed on the basis of the non-direct-current component detected by the detector, and at least one parameter influencing the non-direct-current component of the output signal of the frequency converter is adjusted such that the observed magnitude of local oscillator leakage is reduced.

摘要翻译： 用于校准变频器的技术，用于减少变频器输出端的基于泄漏的非直流分量。 在包括被配置为对输入信号进行频率转换的频率转换器的装置中，布置成产生变频器的幅度调制的本地振荡器信号的本地振荡器信号发生器，以及被配置为检测非直流分量 由振幅本地振荡器信号产生的变频器的输出信号由本地振荡器信号发生器调制原始本机振荡器信号，观察到变频器的本地振荡器泄漏的幅度 基于由检测器检测到的非直流分量，并且调整影响变频器的输出信号的非直流分量的至少一个参数，使得观测到的本地振荡器泄漏的幅度减小 。

公开(公告)号：US08928400B2

公开(公告)日：2015-01-06

申请号：US13298897

申请日：2011-11-17

申请人： Takayuki Tsukamoto

发明人： Takayuki Tsukamoto

IPC分类号： H03D1/00 ,  H04L27/06 ,  H04B5/00

CPC分类号： H04L27/06 ,  G06K7/0008 ,  H03D1/00 ,  H04B5/0031

摘要： A device receives ASK signals by using an ASK signal receiving circuit that is different from an ASK signal receiving circuit for R/W mode, when an NFC-enabled semiconductor device operates in a mode other than the R/W mode. An ASK signal receiving circuit for 100% ASK is provided on the side of a pair of transmitting terminals. This arrangement eliminates the influence of an ESD provided within an ASK signal receiving circuit for 10% ASK coupled to a pair of receiving terminals. There is no need for management of threshold values that are different according to type of ASK and it is possible to support different modulation schemes by a smaller circuit configuration.

摘要翻译： 当NFC功能半导体器件以除R / W模式之外的模式工作时，器件通过使用与用于R / W模式的ASK信号接收电路不同的ASK信号接收电路来接收ASK信号。 在一对发送端子的一侧设置有用于100％ASK的ASK信号接收电路。 这种布置消除了在与一对接收终端耦合的10％ASK的ASK信号接收电路内提供的ESD的影响。 不需要根据ASK的类型来管理不同的阈值，并且可以通过较小的电路配置来支持不同的调制方案。

公开(公告)号：US08913547B2

公开(公告)日：2014-12-16

申请号：US13254139

申请日：2010-03-30

申请人： Ji-Woong Lee ,  Jin-Sook Ryu ,  Yung-Mi Kim

发明人： Ji-Woong Lee ,  Jin-Sook Ryu ,  Yung-Mi Kim

IPC分类号： H04W36/20 ,  H04W72/04 ,  H04W72/02 ,  H03D1/00 ,  H04J3/00 ,  H04W72/00

CPC分类号： H04W72/005 ,  H03D1/00 ,  H04J3/00 ,  H04W36/20 ,  H04W72/02 ,  H04W72/04

摘要： Disclosed is a method for pairing terminals using a dummy terminal, the method including selecting at least one terminal from several, pairing a channel being used by the at least one terminal with data of a dummy terminal, receiving a measurement report message from the at least one terminal, adjusting power of the at least one terminal based upon the measurement report message, and pairing the at least one terminal with another terminal so as to use a channel being used by the at least one terminal together with the another terminal if the at least one terminal is suitable for pairing.

摘要翻译： 本发明公开了一种使用虚拟终端对终端进行配对的方法，该方法包括：从多个终端中选择至少一个终端，将由至少一个终端使用的信道与虚拟终端的数据进行配对，至少从至少一个终端接收测量报告消息 一个终端，根据所述测量报告消息调整所述至少一个终端的功率，以及将所述至少一个终端与另一终端进行配对，以便如果所述至少一个终端与所述另一终端一起使用由所述至少一个终端使用的信道， 最少一个终端适合配对。

公开(公告)号：US20140171007A1

公开(公告)日：2014-06-19

申请号：US14103936

申请日：2013-12-12

申请人： Broadcom Corporation

发明人： Markus Rudiger NENTWIG ,  Jouni Kristian KAUKOVUORI

IPC分类号： H04B1/10

CPC分类号： H04B1/10 ,  H03D1/00 ,  H03D3/008 ,  H03D3/009 ,  H03D7/165 ,  H03D2200/0045 ,  H04B1/30 ,  H04B2001/305

摘要： Technique for calibration of a frequency converter for reducing a leakage-based non-direct-current component at an output of the frequency converter. In an apparatus comprising a frequency converter arranged to perform frequency conversion on an input signal, a local oscillator signal generator arranged to generate an amplitude-modulated local oscillator signal of the frequency converter, and a detector arranged to detect a non-direct-current component of an output signal of the frequency converter, which results from the amplitude-modulated local oscillator signal, an amplitude modulation of an original local oscillator signal by the local oscillator signal generator is controlled, a magnitude of local oscillator leakage of the frequency converter is observed on the basis of the non-direct-current component detected by the detector, and at least one parameter influencing the non-direct-current component of the output signal of the frequency converter is adjusted such that the observed magnitude of local oscillator leakage is reduced.

摘要翻译： 用于校准变频器的技术，用于减少变频器输出端的基于泄漏的非直流分量。 在包括被配置为对输入信号进行频率转换的频率转换器的装置中，布置成产生变频器的幅度调制的本地振荡器信号的本地振荡器信号发生器，以及被配置为检测非直流分量 由振幅本地振荡器信号产生的变频器的输出信号由本地振荡器信号发生器调制原始本机振荡器信号，观察到变频器的本地振荡器泄漏的幅度 基于由检测器检测到的非直流分量，并且调整影响变频器的输出信号的非直流分量的至少一个参数，使得观测到的本地振荡器泄漏的幅度减小 。

公开(公告)号：US20140167734A1

公开(公告)日：2014-06-19

申请号：US14237025

申请日：2012-07-17

申请人： Thorben Detert

发明人： Thorben Detert

IPC分类号： G01R23/16

CPC分类号： G01R23/16 ,  G06F1/00 ,  H03D1/00 ,  H04L1/00 ,  H04L27/06 ,  H04L2201/00

摘要： A method for detecting at least two amplitude-modulated transmitted signals contained in a received signal within the same frequency channel with respectively different frequency displacement determines from the received signal a modified received signal by means of a nonlinear signal processing. Following this, the spectrum of the modified received signal is determined by means of Fourier transform, and at least two transmitted signals contained in the received signal are detected if at least two first spectral lines each associated with carrier signals are significantly distinguishable within the determined spectrum from spectral components associated with noise signals and payload signals.

摘要翻译： 用于检测包含在具有不同频率位移的相同频道内的接收信号中的至少两个幅度调制发射信号的方法，通过非线性信号处理从接收信号确定修改的接收信号。 接下来，通过傅立叶变换来确定修改的接收信号的频谱，并且如果每个与载波信号相关联的至少两个第一频谱线在所确定的频谱内被显着区分，则检测包含在接收信号中的至少两个发射信号 从与噪声信号和有效载荷信号相关联的频谱分量。

公开(公告)号：US08000414B2

公开(公告)日：2011-08-16

申请号：US12021606

申请日：2008-01-29

申请人： Ryuji Aono

发明人： Ryuji Aono

IPC分类号： H04L27/06

CPC分类号： H03D1/00

摘要： This disclosure concerns an amplitude detector comprising: a maximum-minimum detector detecting a maximum and a minimum values of a digital signals; a first and a second lowpass filters respectively having a cutoff frequency lower than a frequency of the waveform signal; a cycle detector detecting a cycle of the waveform signal; a correction coefficient generator generating a numeric value of a correction coefficient expressed by a calculation with respect to the cycle of the waveform signal and a cycle of the sampling; a first multiplier generating a corrected maximum value by multiplying the maximum value of the digital signals by the correction coefficient; a second multiplier generating a corrected minimum value by multiplying the minimum value of the digital signals by the correction coefficient; and an output portion outputting the corrected maximum value or an absolute value of the corrected minimum value as the amplitude of the waveform signal.

摘要翻译： 该公开涉及一种幅度检测器，包括：检测数字信号的最大值和最小值的最大最小检测器; 分别具有低于所述波形信号的频率的截止频率的第一和第二低通滤波器; 循环检测器，检测波形信号的周期; 生成相对于所述波形信号的周期的计算而表示的校正系数的数值和所述采样的周期的校正系数生成单元; 第一乘法器，通过将数字信号的最大值乘以校正系数来产生校正最大值; 第二乘法器，通过将数字信号的最小值乘以校正系数来产生校正最小值; 以及输出部分，输出校正的最大值或校正后的最小值的绝对值作为波形信号的振幅。