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21. 发明授权

US3559107A Amplifier systems and fet modulation 失效
标题翻译：放大器系统和FET调制
公开(公告)号：US3559107A
公开(公告)日：1971-01-26
申请号：US3559107D
申请日：1967-10-09
申请人： SYBRON CORP
发明人： MORGAN MARTIN J , EVANS WILLIAM C , RAPPAPORT RICHARD A , GUTZMER ALFRED N
IPC分类号： H03C1/36 , H03C1/54 , H03F3/393
CPC分类号： H03C1/547 , H03C1/36 , H03F3/393
摘要： A DIRECT CURRENT VOLTAGE IS APPLIED TO THE GATE ELECTRODE OF AN FET (FIELD EFFECT TRANSISTOR) TO MODULATE A CARRIER PASSING THROUGH THE FET BETWEEN ITS CURRENT FROM A FIXED TRODE THE CARRIER IS AN ALTERNATING CURRENT FROM A FIXED AMPLITUDE SOURCE. THE RESISTANCE BETWEEN DRAIN AND SOURCE OF THE FET VARIES IN ACCORDANCE WITHT THE AMPLITUDE OF THE MODULATING VOLTAGE, HENCE, THE CARRIER BECOMES AMPLITUDE MODULATED THEREBY. BIAS VOLTAGE IS APPLIED TO THE FET''S GATE ELECTRODE AT THE VALUE REQUIRED FOR ZERO TEMPERATURE COEFFICIENT OPERATION OF THE TRANSISTOR. VARIATION IN THE NET GATE BIAS DUE TO THE MODULATING VOLTAGE IS SUBSTANTIALLY PREVENTED BY NEGATIVE FEEDBACK OF THE AMPLIFIED AND DEMODULATED CARRIER VOLTAGE TO THE GATE ELECTRODE. FURTHER TEMPERATURE COMPENSATION IS PROVIDED BY A ZENER DIODE MADE OF THE SAME SEM-CONDUCTOR MATERIAL AS THE FET AND INCORPORATED IN THE SUPPLY OF BIAS VOLTAGE. THE BIAS VOLTAGE FOR ZERO TEMPERATURE COEFFICIENT OPERATION IS DETERMINED BY MEANS OF THE RELATION RDSGM=K, WHERE RDS IS THE VALUE OF THE FET''S DRAIN-SOURCE RESISTANCE AT THE ZERO TEMPERATURE COEFFICIENT POINT, GM IS THE FET''S FORWARD TRANSFER TRANSCONDUCTANCE AND K IS A CONSTANT HAVING THE VALUE OF ABOUT 0.184.
摘要翻译：向FET（场效应晶体管）的栅电极施加直流电压，以调制在其漏极和源极之间通过FET的载流子。载波是来自固定振幅源的交流电。 FET的漏极和源极之间的电阻根据调制电压的幅度而变化，因此载波由此调制。偏置电压以晶体管的零温度系数操作所需的值施加到FET的栅电极。由于调制电压引起的净栅极偏置的变化基本上被放大和解调的载流子电压对栅电极的负反馈阻止。进一步的温度补偿由与FET相同的半导体材料制成的齐纳二极管提供，并且并入偏置电压的供应中。零温度系数运算的偏置电压通过RdsGm = K的关系来确定，其中Rds是零温度系数点上FET的漏 - 源电阻的值，Gm是FET的正向传输跨导，K是常数其值约为0.184。

22. 发明授权

US3371290A Field effect transistor product modulator 失效
标题翻译：场效应晶体管产品调制器
公开(公告)号：US3371290A
公开(公告)日：1968-02-27
申请号：US45222765
申请日：1965-04-30
申请人： BELL TELEPHONE LABOR INC
发明人： KIBLER LYNDEN U
IPC分类号： H03C1/54 , H03D1/22
CPC分类号： H03C1/547 , H03D1/2272

23. 发明授权

US11742754B2 Enhanced constant-on-time buck intellectual property apparatus and method 有权
公开(公告)号：US11742754B2
公开(公告)日：2023-08-29
申请号：US17069771
申请日：2020-10-13
申请人： Intel Corporation
发明人： Anup J Deka , Shobhit Tyagi , Sudhir Polarouthu , Biranchinath Sahu
IPC分类号： H02M3/158 , H02M3/156 , G05F1/56 , G05F1/46 , G06F15/78 , H03C1/54
CPC分类号： H02M3/158 , G05F1/461 , G05F1/56 , G06F15/7807 , H02M3/1566 , H03C1/547
摘要： A one-shot inductor current scheme which includes a controller to generate a signal to control a high-side switch and a low-side switch such that the high-side switch remains turned on beyond a turn-on time if a voltage level on an output supply rail remains below a reference. The scheme reduces the minimum operating voltage Vmin and/or frequency guard-band of the SoCs (system-on-chips).

24. 发明授权

US10615749B2 Modulator 有权
公开(公告)号：US10615749B2
公开(公告)日：2020-04-07
申请号：US16013605
申请日：2018-06-20
申请人： QUALCOMM Incorporated
发明人： Efthymios Philip Papageorgiou , Ara Bicakci , Sean Joel Lyn , Yue Lu , Ngar Loong Alan Chan
IPC分类号： H03C1/54 , H04L27/36 , H03F3/217
CPC分类号： H03C1/547 , H03F3/2175 , H04L27/362
摘要： A modulator may include a controller configured to receive in-phase (I) baseband signals and quadrature-phase (Q) baseband signals. The controller may be configured to select a section of a region defined by a number of local oscillator (LO) phases. The controller may be configured to output multiple control signals and a pair of phase selection signals. The modulator may further include multiple output stages. Each output stage may be coupled to the controller to receive a pair of the control signals, the pair of phase selection signals, and multiple offset LO signals. Each of the output stages may include a unit element.

25. 发明授权

US09792475B2 RFID tags 有权
公开(公告)号：US09792475B2
公开(公告)日：2017-10-17
申请号：US14546851
申请日：2014-11-18
申请人： Cambridge Resonant Technologies Ltd.
发明人： Nicholas Patrick Roland Hill
IPC分类号： H04Q5/22 , G06K7/10 , G06K19/07 , H03C1/54
CPC分类号： G06K7/10366 , G06K7/10316 , G06K19/0707 , G06K19/0712 , G06K19/0723 , G06K19/0726 , H03C1/547
摘要： An RF tag for sending data to a tag reader is described. The tag comprises an antenna to couple to an RF field of the tag reader and first and second resonant circuits, the first comprising a non-linear, adaptive resonator configured to automatically self-tune to a frequency of the RF field, the second a linear resonator. The tag also has a local power store. The tag powers up using the non-linear, adaptive resonator, which can automatically self-tune without an external power supply, and this resonator is used to charge the local power store. Once operational the tag switches to using a linear resonator for communicating with the tag reader.

26. 发明授权

US09030297B2 RFID tags 有权
标题翻译： RFID标签
公开(公告)号：US09030297B2
公开(公告)日：2015-05-12
申请号：US12531070
申请日：2008-02-20
申请人： Nicholas Patrick Roland Hill
发明人： Nicholas Patrick Roland Hill
IPC分类号： G06K19/07 , H03C1/54
CPC分类号： G06K7/10366 , G06K7/10316 , G06K19/0707 , G06K19/0712 , G06K19/0723 , G06K19/0726 , H03C1/547
摘要： We describe RFID tags that incorporate a nonlinear resonator that self-adapts to the driving frequency of a reader. More particularly we describe an RF tag for sending data to a tag reader by modulating energy drawn from an RF field of said tag reader, the tag comprising: an antenna; a resonant circuit coupled to said antenna to resonate at a frequency of said RF field; a local power store to store power extracted from said RF field; a modulation system to modulate one or both of the resonance amplitude and a relative phase of a signal in said resonant circuit with respect to said RF field; and a feedback circuit coupled to said resonant circuit and to said local power store to control one or both of said resonance amplitude and said relative phase to control transients in said resonance amplitude caused by said modulation.
摘要翻译：我们描述了RFID标签，其包含自适应读取器的驱动频率的非线性谐振器。更具体地，我们描述一种用于通过调制从所述标签读取器的RF场抽取的能量来向标签读取器发送数据的RF标签，所述标签包括：天线; 耦合到所述天线的谐振电路以所述RF场的频率谐振; 用于存储从所述RF场提取的功率的本地电力存储器; 调制系统，用于相对于所述RF场调制所述谐振电路中的信号的谐振幅度和相对相位中的一个或两个; 以及耦合到所述谐振电路和所述局部功率存储器的反馈电路，以控制所述谐振幅度和所述相对相位中的一个或两个来控制由所述调制引起的所述谐振幅度的瞬变。

27. 发明授权

US07088169B2 Low-noise, high-linearity analog multiplier 有权
标题翻译：低噪声，高线性模拟乘法器
公开(公告)号：US07088169B2
公开(公告)日：2006-08-08
申请号：US10781975
申请日：2004-02-18
申请人： Simone Erba , Giampiero Montagna , Mario Valla
发明人： Simone Erba , Giampiero Montagna , Mario Valla
IPC分类号： G05F7/44 , G05G7/16
CPC分类号： H03C1/547 , H03D7/1441 , H03D7/1458 , H03D7/1491
摘要： An analog multiplier for multiplying a first analog voltage signal at a first frequency by a second analog voltage signal at a second frequency, comprising a first stage for converting the first analog voltage signal into a first and a second current signals, and a second stage comprising a first and a second cross-coupled current-switching pairs, driven by the second voltage signal, the first and second current-switching pairs having respective current inputs for receiving the first and the second current signals, respectively. Parasitic capacitances are inherently associated with each current input of the current-switching pairs. A compensation circuit is coupled to the current inputs of the current-switching pairs for compensating the parasitic capacitances.
摘要翻译：一种用于将第一频率的第一模拟电压信号乘以第二频率的第二模拟电压信号的模拟乘法器，包括用于将第一模拟电压信号转换为第一和第二电流信号的第一级，以及包括由第二电压信号驱动的第一和第二交叉耦合电流切换对，第一和第二电流切换对具有分别用于接收第一和第二电流信号的相应的电流输入。寄生电容固有地与电流 - 开关对的每个电流输入相关联。补偿电路耦合到电流 - 开关对的电流输入以补偿寄生电容。

28. 发明申请

US20040227559A1 Low-noise, high-linearity analog multiplier 有权
标题翻译：低噪声，高线性模拟乘法器
公开(公告)号：US20040227559A1
公开(公告)日：2004-11-18
申请号：US10781975
申请日：2004-02-18
申请人： STMicroelectronics S.r.l.
发明人： Simone Erba , Giampiero Montagna , Mario Valla
IPC分类号： H03F003/45
CPC分类号： H03C1/547 , H03D7/1441 , H03D7/1458 , H03D7/1491
摘要： An analog multiplier for multiplying a first analog voltage signal at a first frequency by a second analog voltage signal at a second frequency, comprising a first stage for converting the first analog voltage signal into a first and a second current signals, and a second stage comprising a first and a second cross-coupled current-switching pairs, driven by the second voltage signal, the first and second current-switching pairs having respective current inputs for receiving the first and the second current signals, respectively. Parasitic capacitances are inherently associated with each current input of the current-switching pairs. A compensation circuit is coupled to the current inputs of the current-switching pairs for compensating the parasitic capacitances.
摘要翻译：一种用于将第一频率的第一模拟电压信号乘以第二频率的第二模拟电压信号的模拟乘法器，包括用于将第一模拟电压信号转换为第一和第二电流信号的第一级，以及包括由第二电压信号驱动的第一和第二交叉耦合电流切换对，第一和第二电流切换对具有分别用于接收第一和第二电流信号的各自的电流输入。寄生电容固有地与电流 - 开关对的每个电流输入相关联。补偿电路耦合到电流 - 开关对的电流输入以补偿寄生电容。

29. 发明授权

US5973576A Mixer for mixing carrier signals and data signals 失效
标题翻译：用于混合载波信号和数据信号的混频器
公开(公告)号：US5973576A
公开(公告)日：1999-10-26
申请号：US966294
申请日：1997-11-07
申请人： Mitsuo Ariie
发明人： Mitsuo Ariie
IPC分类号： H03D7/12 , H03C1/54 , H03C3/14 , H03D7/14 , H04B1/26 , H03C1/00
CPC分类号： H03D7/1441 , H03C1/547 , H03D7/1458 , H03D2200/0043 , H03D2200/0084
摘要： A low-powered mixer that is operable at a low voltage by a single positive power supply. A predetermined voltage and a first data signal Ss1 superimposed on the predetermined voltage are input into the drain D of an FET Q1, while a first carrier signal Sc1 is input into the FET Q1's gate G. The FET Q1 thus generates a first mixed signal So1 by mixing the first data signal Ss1 and the first carrier signal Sc1. A predetermined voltage and a second data signal Ss2 superimposed on the predetermined voltage are input into the FET Q2's drain D, while a second carrier signal Sc2 is input into the FET Q2's gate G. The FET Q2 thus generates a second mixed signal So2 by mixing the second data signal Ss2 and the second carrier signal Sc2. A capacitor C5 causes the sources S of the FETs Q1 and Q2 to float for DC and to be grounded for AC.
摘要翻译：一种低功率混频器，可通过单个正电源在低电压下工作。叠加在预定电压上的预定电压和第一数据信号Ss1被输入到FET Q1的漏极D中，而第一载波信号Sc1被输入到FET Q1的栅极G中。因此，FET Q1产生第一混合信号So1 通过混合第一数据信号Ss1和第一载波信号Sc1。叠加在预定电压上的预定电压和第二数据信号Ss2被输入到FET Q2的漏极D中，而第二载波信号Sc2被输入到FET Q2的栅极G中。因此，FET Q2通过混合产生第二混合信号So2 第二数据信号Ss2和第二载波信号Sc2。电容器C5使得FET Q1和Q2的源极S浮起来用于DC并被接地用于AC。

30. 发明授权

US3621473A Balanced modulator with jfet{40 s voltage controlled resistors 失效
标题翻译：具有JFET（40 S电压控制电阻）的平衡调制器
公开(公告)号：US3621473A
公开(公告)日：1971-11-16
申请号：US3621473D
申请日：1970-02-03
申请人： COLLINS RADIO CO
发明人： STOFFER C DANIEL W
IPC分类号： H03C1/54 , H03D7/12 , H03D7/14 , H03C3/00
CPC分类号： H03D7/1441 , H03C1/547 , H03D7/125 , H03D7/1408 , H03D7/1483 , H03D7/1491
摘要： A balanced modulator up-translating an audio input signal to carrier sidebands with the carrier suppressed in the output via two field effect transistors used as voltage controlled resistors in a series shunt configuration.

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