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1. 发明授权

US3582829A Modulating systems incorporating an electrically variable inductance as a modulating element 失效
标题翻译：作为调制元件并入电气可变电感的调制系统
公开(公告)号：US3582829A
公开(公告)日：1971-06-01
申请号：US3582829D
申请日：1968-08-05
申请人： WANLASS ELECTRIC CO
发明人： WANLASS LESLIE K
IPC分类号： H01F21/08 , H03C1/10 , H03C3/12 , H03C1/00
CPC分类号： H01F21/08 , H01F2029/143 , H03C1/10
摘要： Modulating systems in which modulation, either AM or FM is accomplished by use of an inductor, the impedance of which can be electrically varied. The inductor comprises a first winding wound on a magnetic core having four legs or common regions joined by end regions. A source of control current is connected to another winding wound on the core generally transverse to the first winding, the control current in the second winding controlling the inductance of the first. The variable inductor is used as a series impedance in AM modulation systems and as part of a tuned circuit in FM modulating systems.

2. 发明授权

US3243743A Negative reactance tuned circuit 失效
标题翻译：负电抗调谐电路
公开(公告)号：US3243743A
公开(公告)日：1966-03-29
申请号：US6386860
申请日：1960-10-20
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： SZIKLAI GEORGE C
IPC分类号： H03C3/12 , H03H5/12
CPC分类号： H03H5/12 , H03C3/12

3. 发明授权

US2925562A Frequency modulated crystal oscillator circuit 失效
标题翻译：调频晶振电路
公开(公告)号：US2925562A
公开(公告)日：1960-02-16
申请号：US61286156
申请日：1956-09-28
申请人： MOTOROLA INC
发明人： FIRESTONE WILLIAM L
IPC分类号： H03C3/12 , H03C3/14 , H03C3/18
CPC分类号： H03C3/14 , H03C3/12 , H03C3/18

4. 发明授权

US2524759A Phase shift network 失效
标题翻译：相移网络
公开(公告)号：US2524759A
公开(公告)日：1950-10-10
申请号：US77096647
申请日：1947-08-28
申请人： BROWN WALTER J
发明人： BROWN WALTER J
IPC分类号： H02M1/04 , H03C3/12 , H03C3/14 , H03H7/20 , H03H11/20
CPC分类号： H03C3/12 , H02M1/042 , H03C3/14 , H03H7/20 , H03H11/20 , Y10S388/913

5. 发明授权

US2288575A Frequency modulation 失效
公开(公告)号：US2288575A
公开(公告)日：1942-06-30
申请号：US33801240
申请日：1940-05-31
申请人： RCA CORP
发明人： WILHELM STABLEIN
IPC分类号： H03C3/02 , H03C3/12 , H04B14/00
CPC分类号： H03C3/12 , H03C3/02 , H04B14/006

6. 发明授权

US1899527A System for transmitting electroradiant energy 失效
标题翻译：传递电子能量的系统
公开(公告)号：US1899527A
公开(公告)日：1933-02-28
申请号：US7719425
申请日：1925-12-23
申请人： JOHN HAYS HAMMOND JR
发明人： PURINGTON ELLISON S
IPC分类号： H03C3/12
CPC分类号： H03C3/12

7. 发明申请

US20160112226A1 SYSTEMS FOR ANALOG PHASE SHIFTING 有权
标题翻译：模拟相移系统
公开(公告)号：US20160112226A1
公开(公告)日：2016-04-21
申请号：US14887198
申请日：2015-10-19
申请人： Kumu Networks, Inc.
发明人： Ricardo Martinez , Joseph Shalizi , Ernie Landi , Mayank Jain , Jung-Il Choi
IPC分类号： H04L27/20 , H03C3/12
CPC分类号： H04L27/2003 , H01Q3/36 , H03C3/12 , H04B1/10 , H04B1/525 , H04B7/15585
摘要： A system for phase shifting that produces an output signal by modifying a phase of an input signal, including a primary phase shifting stage that modifies the input signal phase in increments set by a first tuning resolution; a secondary phase shifting stage that modifies the input signal phase in increments set by a second tuning resolution; and, a tuning circuit that controls the primary phase shifting stage and the secondary phase shifting stage according to control input.
摘要翻译：一种用于相移的系统，其通过修改输入信号的相位来产生输出信号，所述相位包括以由第一调谐分辨率设定的增量修改输入信号相位的主相移级; 第二相移级，其以由第二调谐分辨率设置的增量修改输入信号相位; 以及根据控制输入控制主相移级和次相移阶段的调谐电路。

8. 发明申请

US20130012141A1 SYSTEM AND METHOD FOR REDUCING TEMPERATURE-DEPENDENT AND PROCESS-DEPENDENT FREQUENCY VARIATION OF A CRYSTAL OSCILLATOR CIRCUIT 有权
标题翻译：用于降低晶体振荡器电路温度依赖性和过程依赖频率变化的系统和方法
公开(公告)号：US20130012141A1
公开(公告)日：2013-01-10
申请号：US13176509
申请日：2011-07-05
申请人： David Harnishfeger
发明人： David Harnishfeger
IPC分类号： H04W88/02 , H03C3/12
CPC分类号： H03L1/00 , H03J3/04 , H03L1/023 , H03L1/025 , H03L1/028
摘要： In embodiments of the present disclosure, a method may include determining an ambient temperature of an oscillator. The method may also include estimating an approximate frequency of operation of the oscillator. The method may additional include determining a process-based compensation to be applied to a resonator of the oscillator based on the approximate frequency. The method may further include setting a capacitance of a variable capacitor coupled to the resonator in order to compensate for temperature-dependent and process-dependent frequency variation of the oscillator based on the ambient temperature and the process-based compensation.
摘要翻译：在本公开的实施例中，方法可以包括确定振荡器的环境温度。该方法还可以包括估计振荡器的近似操作频率。该方法可以包括基于近似频率来确定要应用于振荡器的谐振器的基于过程的补偿。该方法还可以包括设置耦合到谐振器的可变电容器的电容，以便基于环境温度和基于过程的补偿来补偿振荡器的温度依赖性和过程相关的频率变化。

9. 发明授权

US3766485A Frequency-voltage translation circuit 失效
标题翻译：频率转换电路
公开(公告)号：US3766485A
公开(公告)日：1973-10-16
申请号：US3766485D
申请日：1972-03-13
申请人： BOSCH GMBH ROBERT
发明人： SCHONART E , ADLER K , SCHNAIBEL E , FLEISCHER H
IPC分类号： G01P3/48 , H03K9/06 , H03C3/12
CPC分类号： G01P3/4802 , H03K9/06
摘要： A pair of storage condensers having charging and discharge circuits, and a change-over circuit therebetween, are interconnected under control of a monostable multivibrator so that, when the monostable multivibrator is triggered into unstable state by input pulses, the trailing edge of the flanks of the pulses therefrom are connected to the charging circuit for one of the condensers to charge the condenser; and, connected to the discharge circuit to activate the discharge circuit and permit discharge of the condenser during the reset time of the monostable multivibrator and, additionally, to the change-over circuit to selectively block the change-over circuit. To provide good linearity, a function generator, preferably a dioderesistance network having an approximately parabolic or hyperbolic transfer function interconnects the storage condenser and the discharge circuit therefor. The monostable multivibrator is so connected that an output transistor thereof simultaneously forms part of the discharge circuit, to reduce the number of required components.
摘要翻译：具有充电和放电电路的一对存储电容器以及它们之间的转换电路在单稳态多谐振荡器的控制下互连，使得当单稳态多谐振荡器通过输入脉冲触发到不稳定状态时，侧翼的后缘其中的脉冲连接到用于一个冷凝器的充电电路以对冷凝器充电; 并且连接到放电电路以激活放电电路并且允许在单稳态多谐振荡器的复位时间期间电容器的放电，并且还包括转换电路以选择性地阻断转换电路。为了提供良好的线性度，功能发生器，优选具有近似抛物线或双曲线传递函数的二极管电阻网络将存储电容器和放电电路互连。单稳态多谐振荡器连接成使得其输出晶体管同时形成放电电路的一部分，以减少所需部件的数量。

10. 发明授权

US3585528A Hall-effect modulator including distortion suppression means 失效
标题翻译：霍尔效应调节器，包括失真抑制手段
公开(公告)号：US3585528A
公开(公告)日：1971-06-15
申请号：US3585528D
申请日：1968-10-28
申请人： BELL TELEPHONE LABOR INC
发明人： WALLACE ROBERT L JR
IPC分类号： H01L43/04 , H03B19/00 , H03C3/12 , H03C1/48
CPC分类号： H03B19/00 , H01L43/04
摘要： In practical Hall-effect modulators, unwanted signal components, for example, carrier frequency harmonics and magnetic field components, appear in the output signal. These unwanted signal components are suppressed by selectively shaping a face of a magnetic core member of the modulator to introduce an inhomogeneity into the magnetic field applied to the Hall element. Further suppression of unwanted signal components is achieved by utilizing a potentiometer connected between output terminals of the Hall element and an additional terminal substantially in the center of the element.

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