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1. 发明授权

US3737792A Phase locked frequency modulation demodulator circuit including colpitts transistor and feedback transistor 失效
标题翻译：相位锁定频率调制解调器电路，包括晶体管和反馈晶体管
公开(公告)号：US3737792A
公开(公告)日：1973-06-05
申请号：US3737792D
申请日：1971-02-16
申请人： HUGHES AIRCRAFT CO
发明人： PARHAM O
IPC分类号： H03C3/14 , H03C3/16 , H03D3/24
CPC分类号： H03D3/241 , H03C3/145 , H03C3/16 , H03C2200/0008 , H03D3/24 , H03D2200/0021
摘要： A phase locked frequency modulation demodulator circuit is disclosed including a transistor connected in a Colpitts configuration. An effective tank circuit capacitance is varied in accordance with an error signal indicative of the frequency difference between a frequency modulated input signal and a signal at the instantaneous oscillation frequency of the circuit to vary the instantaneous oscillation frequency accordingly, causing the circuit to phase lock onto the carrier frequency of the input signal and to produce an amplitude varying signal indicative of the frequency modulation on the input signal.

2. 发明授权

US3737807A Phase modulator circuit including colpitts transistor and feedback transistor 失效
标题翻译：相位调制器电路，包括晶体管和反馈晶体管
公开(公告)号：US3737807A
公开(公告)日：1973-06-05
申请号：US3737807D
申请日：1971-02-26
申请人： HUGHES AIRCRAFT CO
发明人： PARHAM O
IPC分类号： H03C3/14 , H03C3/16 , H03D3/24 , H03C3/22 , H03C3/08
CPC分类号： H03D3/241 , H03C3/145 , H03C3/16 , H03C2200/0008 , H03D3/24 , H03D2200/0021
摘要： A phase modulator circuit is disclosed including a transistor connected in a Colpitts configuration. An effective tank circuit capacitance is varied in accordance with an error signal indicative of the instantaneous phase difference between a carrier frequency input signal and a signal at the instantaneous oscillation frequency of the circuit. The instantaneous oscillation frequency of the circuit is varied in response to an amplitude varying input signal, thereby phase modulating the carrier frequency signal in accordance with the amplitude varying input signal.
摘要翻译：公开了一种相位调制器电路，其包括以Colpitts配置连接的晶体管。根据表示载波频率输入信号与电路的瞬时振荡频率的信号之间的瞬时相位差的误差信号，有效的振荡电路电容变化。电路的瞬时振荡频率响应于幅度变化输入信号而变化，从而根据幅度变化输入信号相位调制载波频率信号。

3. 发明授权

US4926144A Multi-function modulation and center frequency control port for voltage controlled oscillator 失效
标题翻译：用于压控振荡器的多功能调制和中心频率控制端口
公开(公告)号：US4926144A
公开(公告)日：1990-05-15
申请号：US250760
申请日：1988-09-29
申请人： Robert K. Bell
发明人： Robert K. Bell
IPC分类号： H03C3/08 , H03C3/09
CPC分类号： H03C3/09 , H03C3/08 , H03C2200/0008
摘要： A circuit for use in conjunction with a voltage controlled oscillator (VCO). The circuit introduces modulation into a radio system (to create a substantially flat frequency response) at the same VCO port at which VCO frequency centering and negative bias control signals are introduced. A potentiometer is utilized both for providing an adjustable negative bias to the varactor in the VCO resonant circuit and for setting the VCO to the appropriate center frequency. Modulation compensation circuitry is coupled to the control arm of the potentiometer and to the anode of the varactor (via a choke 4). The modulation compensating circuitry is preferably designed to have a transfer function that is substantially the inverse of the closed loop transfer function of the phase locked loop system with respect to the frequency modulation of the VCO.
摘要翻译：与压控振荡器（VCO）结合使用的电路。该电路在相同的VCO端口上引入调制到无线电系统（以产生基本上平坦的频率响应），在VCO端口处引入VCO频率中心和负偏置控制信号。电位器用于为VCO谐振电路中的变容二极管提供可调负偏压，并将VCO设置到适当的中心频率。调制补偿电路耦合到电位计的控制臂和变容二极管的阳极（通过扼流圈4）。调制补偿电路优选地被设计为具有相对于VCO的频率调制基本上与锁相环系统的闭环传递函数相反的传递函数。

4. 发明授权

US08222965B1 Radio frequency modulator 有权
标题翻译：射频调制器
公开(公告)号：US08222965B1
公开(公告)日：2012-07-17
申请号：US12877732
申请日：2010-09-08
申请人： Thor Nelson Juneau , Mark Alan Lemkin
发明人： Thor Nelson Juneau , Mark Alan Lemkin
IPC分类号： H03C3/06 , H03L7/08
CPC分类号： H03C3/0916 , H03C3/0941 , H03C3/0958 , H03C3/0975 , H03C2200/0008
摘要： A modulator for modulating a radio frequency signal comprises a voltage controlled oscillator, a first feedback path, and a second feedback path. The first feedback path is coupled between a detector output and the voltage controlled oscillator. The second feedback path is coupled between the detector output and the voltage controlled oscillator. The detector is coupled to a divided down output of the voltage controlled oscillator and a reference clock.
摘要翻译：用于调制射频信号的调制器包括压控振荡器，第一反馈路径和第二反馈路径。第一反馈路径耦合在检测器输出和压控振荡器之间。第二反馈路径耦合在检测器输出和压控振荡器之间。检测器耦合到压控振荡器的分频输出和参考时钟。

5. 发明授权

US07956699B2 Frequency modulator and method for adjusting gain thereof 有权
标题翻译：频率调制器及其增益调整方法
公开(公告)号：US07956699B2
公开(公告)日：2011-06-07
申请号：US12505424
申请日：2009-07-17
申请人： Toru Matsuura , Wayne S. Lee
发明人： Toru Matsuura , Wayne S. Lee
IPC分类号： H03C3/06
CPC分类号： H03C3/09 , H03C3/04 , H03C3/0991 , H03C2200/0008
摘要： A frequency modulator capable of performing frequency modulation without increasing quantization noise; and a method for adjusting the gain thereof are provided. An input signal is gain-adjusted by a gain adjustment section and outputted to a frequency modulation section. The frequency modulation section is gain-controlled based on a first signal. For setting a digital gain coefficient and an analog gain coefficient of the gain adjustment section, a test signal is inputted. In this state, in a generation section, first control information for setting the digital gain coefficient and second control information for setting the analog gain coefficient are generated based on information regarding a state of the frequency modulation section.
摘要翻译：一种能够在不增加量化噪声的情况下执行频率调制的频率调制器; 并且提供了一种用于调节其增益的方法。输入信号由增益调整部进行增益调整，并输出到频率调制部。频率调制部分基于第一信号进行增益控制。为了设定增益调整部的数字增益系数和模拟增益系数，输入测试信号。在该状态下，在生成部中，基于与频率调制部的状态有关的信息生成用于设定数字增益系数的第一控制信息和用于设定模拟增益系数的第二控制信息。

6. 发明申请

US20110012688A1 FREQUENCY MODULATOR AND METHOD FOR ADJUSTING GAIN THEREOF 有权
标题翻译：频率调制器和调整其增益的方法
公开(公告)号：US20110012688A1
公开(公告)日：2011-01-20
申请号：US12505424
申请日：2009-07-17
申请人： Toru Matsuura , Wayne S. Lee
发明人： Toru Matsuura , Wayne S. Lee
IPC分类号： H03C3/02
CPC分类号： H03C3/09 , H03C3/04 , H03C3/0991 , H03C2200/0008
摘要： A frequency modulator capable of performing frequency modulation without increasing quantization noise; and a method for adjusting the gain thereof are provided. An input signal is gain-adjusted by a gain adjustment section and outputted to a frequency modulation section. The frequency modulation section is gain-controlled based on a first signal. For setting a digital gain coefficient and an analog gain coefficient of the gain adjustment section, a test signal is inputted. In this state, in a generation section, first control information for setting the digital gain coefficient and second control information for setting the analog gain coefficient are generated based on information regarding a state of the frequency modulation section.
摘要翻译：一种能够在不增加量化噪声的情况下执行频率调制的频率调制器; 并且提供了一种用于调节其增益的方法。输入信号由增益调整部进行增益调整，并输出到频率调制部。频率调制部分基于第一信号进行增益控制。为了设定增益调整部的数字增益系数和模拟增益系数，输入测试信号。在该状态下，在生成部中，基于与频率调制部的状态有关的信息生成用于设定数字增益系数的第一控制信息和用于设定模拟增益系数的第二控制信息。

7. 发明授权

US3611195A Variable frequency oscillator and modulator circuits including colpitts transistor and feedback transistor 失效
标题翻译：可变频率振荡器和调制器电路，包括晶体管和反馈晶体管
公开(公告)号：US3611195A
公开(公告)日：1971-10-05
申请号：US3611195D
申请日：1969-09-03
申请人： HUGHES AIRCRAFT CO
发明人： PARHAM O D , CO HUGHES AIRCRAFT
IPC分类号： H03C3/14 , H03C3/16 , H03D3/24 , H03C3/08
CPC分类号： H03D3/241 , H03C3/145 , H03C3/16 , H03C2200/0008 , H03D3/24 , H03D2200/0021
摘要： The basic variable frequency oscillator circuit includes a transistor connected in a Colpitts configuration. An effective tank circuit capacitance is varied in accordance with a control signal to vary the circuit oscillation frequency. When the effective capacitance is provided by the transistor base-emitter capacitance, the frequency variation may be achieved by varying the transistor emitter current or the collector-base voltage. Alternatively, the effective capacitance may be varied by varying the transconductance of a second transistor coupled in a feedback arrangement with the Colpitts transistor. Frequency modulation may be achieved when a modulating voltage is used as the control signal. Circuit variations involving phase locking of the feedback employing embodiment onto an input signal include a frequency demodulator, a phase modulator and an amplitude modulation limiter. Further variations include a harmonic signal generator and frequency multiplier/divider circuits.
摘要翻译：公开了一种锁相频率调制解调器电路，其包括以Colpitts配置连接的晶体管。根据表示频率调制输入信号与电路的瞬时振荡频率的信号之间的频率差的误差信号，有效的振荡电路电容变化，以相应地改变瞬时振荡频率，从而使电路相位锁定输入信号的载波频率，并产生指示对输入信号进行频率调制的幅度变化信号。

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