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公开(公告)号：US11799323B2
公开(公告)日：2023-10-24
申请号：US17393005
申请日：2021-08-03
发明人： Chun-Kil Jung , Hak Do Kim , Sang Youn Noh
CPC分类号： H02J50/12 , H02J7/00714 , H02J50/10 , H02J50/80 , H03D1/10
摘要： A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.
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公开(公告)号：US09360504B2
公开(公告)日：2016-06-07
申请号：US14535032
申请日：2014-11-06
发明人： Nicolas Pillin , Goran Stojanovic , Tony Ghueldre
CPC分类号： G01R19/04 , G06K7/0008 , G06K19/07 , G06K19/0713 , H03D1/10 , H03D1/18 , H03D2200/0011 , H03D2200/0043 , H03D2200/0098 , H04B5/0056 , H04L27/06
摘要： An envelope detector circuit, suitable for use in RFID tags, includes a voltage doubler circuit and a biasing voltage generating circuit which comprises components matched respectively to rectifying components of the voltage doubler circuit. A rectifying component of this voltage doubler circuit is formed by a transistor controlled by the biasing voltage generating circuit which provides a biasing voltage to a control gate of this transistor, the biasing voltage generating circuit being arranged so as to permit a determined forward biasing current to flow through the transistor and further rectifying elements of the voltage doubler circuit. This embodiment provides fast, highly sensitive detection of envelope waveforms in input signals. Thanks to the matched rectifying components, efficiency variations due to variations in manufacturing process can be eliminated. The envelope detector circuit is further arranged for maintaining a stable detection independent of variations in temperature.
摘要翻译： 适用于RFID标签的包络检测器电路包括倍压器电路和偏置电压产生电路，其包括分别匹配倍压器电路的整流部件的部件。 该倍压电路的整流元件是由偏置电压产生电路控制的晶体管形成的，该偏置电压产生电路向该晶体管的控制栅极提供偏置电压，偏置电压产生电路被布置成允许确定的正向偏置电流 流过晶体管并进一步整流元件的倍压器电路。 该实施例提供对输入信号中的包络波形的快速，高灵敏度的检测。 由于匹配的整流元件，可以消除由于制造过程中的变化引起的效率变化。 包络检测器电路还被布置成用于保持独立于温度变化的稳定检测。
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公开(公告)号：US09093954B2
公开(公告)日：2015-07-28
申请号：US13964119
申请日：2013-08-12
申请人： Wanfu Ye , Xiang Gao , Dongpeng Hou
发明人： Wanfu Ye , Xiang Gao , Dongpeng Hou
摘要： A BASK demodulator includes a signal modifying circuit and a low pass filter (LPF) that couples an amplifier to an output of the modifying circuit. The modifying circuit includes a signal scaling circuit, a rectifying circuit and an AC coupling circuit. A signal shaping circuit couples an output of the amplifier to an output of the demodulator. The signal scaling circuit scales an input BASK modulated signal to provide an unclipped scaled and biased alternating signal that alternates about a bias voltage at a minimum carrier frequency. The rectifying circuit rectifies the unclipped signal to provide a partially rectified signal that is decoupled by the AC coupling circuit to provide a clipped scaled and biased alternating signal. The LPF removes the signal from the clipped scaled and biased alternating signal to provide a demodulated signal, which then is amplified by the amplifier and shaped by the shaping circuit.
摘要翻译： BASK解调器包括将放大器耦合到修改电路的输出的信号修正电路和低通滤波器（LPF）。 修正电路包括信号缩放电路，整流电路和AC耦合电路。 信号整形电路将放大器的输出耦合到解调器的输出。 信号缩放电路对输入的BASK调制信号进行缩放以提供在最小载波频率上绕偏置电压交替的未切割的定标和偏置交替信号。 整流电路对未剪切信号进行整流，以提供由AC耦合电路解耦的部分整流信号，以提供限幅和偏置的交替信号。 LPF从被裁剪和偏置的交替信号中去除信号以提供解调信号，然后被放大器放大并由整形电路成形。
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公开(公告)号：US07800436B2
公开(公告)日：2010-09-21
申请号：US12129440
申请日：2008-05-29
申请人： Daisuke Yamazaki
发明人： Daisuke Yamazaki
摘要： A shunt regulator performs a control so as to stabilize a voltage obtained by rectifying the radio frequency signal output from an antenna unit at a prescribed voltage value. A signal extraction unit extracts the information signal from a bypass current sent by the shunt regulator for the control when the voltage fluctuates.
摘要翻译： 分流调节器进行控制，以便稳定通过以规定的电压值对从天线单元输出的射频信号进行整流而获得的电压。 当电压波动时，信号提取单元从用于控制的并联调节器发送的旁路电流提取信息信号。
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公开(公告)号：US07439800B2
公开(公告)日：2008-10-21
申请号：US11313246
申请日：2005-12-20
申请人： Jérôme Conraux
发明人： Jérôme Conraux
IPC分类号： H03D1/10
CPC分类号： G06K19/0723 , H04L27/08
摘要： An amplitude demodulator comprising a capacitive element for filtering a first D.C. component of a received signal, an element for detecting edges in the signal provided by the capacitive element, and at least one switching element for forcing, at least after detection of an edge, the returning of the signal provided by the capacitive element to a second D.C. component.
摘要翻译： 一种幅度解调器，包括用于滤波接收信号的第一DC分量的电容元件，用于检测由电容元件提供的信号中的边缘的元件，以及至少一个开关元件，至少在检测到边缘之后， 将由电容元件提供的信号返回到第二DC分量。
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公开(公告)号：US06897719B2
公开(公告)日：2005-05-24
申请号：US10320949
申请日：2002-12-16
申请人： Walter Kargl , Mario Kupnik , Ernst Neuhold
发明人： Walter Kargl , Mario Kupnik , Ernst Neuhold
CPC分类号： H03D1/10
摘要： Two capacitors are provided for demodulating an amplitude-modulated signal and can be supplied with a signal that is rectified by a diode and that is at a voltage. The half-cycles of this signal are used for alternately charging the first or second capacitor using a switch. The capacitors are discharged using switches. Comparing the amplitude values, which are stored in the capacitors, of successive half-cycles in an evaluation unit allows simple and precise demodulation, which can be achieved with few components and can be carried out at very high frequencies.
摘要翻译： 提供两个电容器来解调幅度调制信号，并且可以提供由二极管整流并且处于电压的信号。 该信号的半周期用于使用开关交替地对第一或第二电容器充电。 电容器使用开关放电。 将评估单元中连续半周期中存储的电容器中的振幅值进行比较，可以进行简单精确的解调，这可以通过少量组件实现，并可在非常高的频率下进行。
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公开(公告)号：US6046631A
公开(公告)日：2000-04-04
申请号：US168562
申请日：1998-10-09
申请人： Takaya Kitahara , Kazuhisa Matsuge
发明人： Takaya Kitahara , Kazuhisa Matsuge
CPC分类号： G01R19/22
摘要： The present invention provides a detector comprising a microstrip line having one end being grounded and another end connected to a main transmission line, a detection diode connected to the microstrip line, and a smoothing circuit for smoothing a signal detected by the detection diode.
摘要翻译： 本发明提供了一种检测器，其包括微带线，其一端接地，另一端连接到主传输线，连接到微带线的检测二极管，以及用于平滑由检测二极管检测的信号的平滑电路。
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49.发明授权Modified Colpitts oscillator for driving an antenna coil and generating a clock signal 失效改进的Colpitts振荡器，用于驱动天线线圈并产生时钟信号
公开(公告)号：US5625327A
公开(公告)日：1997-04-29
申请号：US502313
申请日：1995-07-13
申请人： Gary T. Carroll , J. Donald Pauley
发明人： Gary T. Carroll , J. Donald Pauley
CPC分类号： H03B5/1203 , H03B5/1231 , H03B2200/0008 , H03B2200/0086 , H03D1/10 , H03D1/18
摘要： A Colpitts-type oscillator circuit suitable for use with electronic identification systems is disclosed. The oscillator circuit utilizes a pair of transistors coupled together with a feedback loop that includes a parallel LC circuit such that the output amplitude can be as high as a factor of 20 times the supply voltage or more while maintaining a high Q, low distortion output. The oscillator circuit is a modified Colpitts oscillator that includes a NPN transistor and a PNP transistor coupled together and a Colpitts type feedback loop containing a parallel LC circuit. The capacitance of the parallel LC circuit consists of at least two capacitors in series forming a capacitive divider which provides a low impedance feedback via the base of the NPN transistor into the emitter of the PNP transistor. The collector of the PNP transistor taps into the inductor of the parallel LC circuit such that the inductor is driven to resonance.
摘要翻译： 公开了一种适用于电子识别系统的Colpitts型振荡器电路。 振荡器电路利用一对晶体管与包括并联LC电路的反馈回路耦合在一起，使得输出幅度可以高达电源电压的20倍或更高，同时保持高Q，低失真输出。 振荡器电路是经过修改的Colpitts振荡器，其包括耦合在一起的NPN晶体管和PNP晶体管以及包含并联LC电路的Colpitts型反馈回路。 并联LC电路的电容由串联的至少两个电容器构成，形成电容分压器，其通过NPN晶体管的基极提供低阻抗反馈到PNP晶体管的发射极。 PNP晶体管的集电极进入并联LC电路的电感器，使得电感器被驱动到谐振。
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公开(公告)号：US5392464A
公开(公告)日：1995-02-21
申请号：US109309
申请日：1993-08-19
申请人： Hannu Pakonen
发明人： Hannu Pakonen
CPC分类号： H03G3/3042
摘要： Disclosed is power level adjusting apparatus for a data transmission system of the type having a power amplifier means for providing a modulated output signal. A detecting circuit for providing a voltage proportional to the power amplifier means output signal level includes a coupling circuit connected to the output of the power amplifier means for coupling the modulated voltage signal therefrom to provide a detected voltage proportional to the power level of the power amplifier means modulated output voltage signal. A source of bias signal is included for selectively providing a bias signal embodied in one of two bias level states, and a switchable active device circuit is connected to the output of the power amplifier means, to the coupling means and to the source of bias signal, the switchable active device which may be a PIN diode or a GaAs FET is being responsive to the bias signal in a first one of the two bias level states for switching to a non-conducting condition and thereby providing a low signal coupling mode for the coupling means, and the switchable active device circuit is responsive to the bias signal in a second one of the two bias level states for switching to a conducting condition and thereby providing a high signal coupling mode for the coupling means.
摘要翻译： 公开了一种用于具有用于提供调制输出信号的功率放大器装置的数据传输系统的功率电平调节装置。 用于提供与功率放大器装置输出信号电平成比例的电压的检测电路包括连接到功率放大器装置的输出的耦合电路，用于耦合来自其的调制电压信号，以提供与功率放大器的功率电平成比例的检测电压 意味着调制输出电压信号。 包括偏置信号源，用于选择性地提供体现在两个偏置电平状态之一中的偏置信号，并且可切换有源器件电路连接到功率放大器装置的输出端，耦合装置和偏置信号源 可以是PIN二极管或GaAs FET的可切换有源器件在两个偏置电平状态中的第一个状态下响应于偏置信号，以切换到非导通状态，从而提供低信号耦合模式，用于 耦合装置，并且可切换有源器件电路响应于两个偏置电平状态中的第二个偏置电平状态中的偏置信号，以切换到导通条件，从而为耦合装置提供高信号耦合模式。
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