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1. 发明授权

US5559468A Feedback loop closure in a linear transmitter 失效
标题翻译：线性变送器中的反馈闭环
公开(公告)号：US5559468A
公开(公告)日：1996-09-24
申请号：US84661
申请日：1993-06-28
申请人： Paul H. Gailus , Ronald H. Chapman , Jeffrey B. Wilhite
发明人： Paul H. Gailus , Ronald H. Chapman , Jeffrey B. Wilhite
IPC分类号： H03B27/00 , H03C3/40 , H03D7/16 , H03F1/34
CPC分类号： H03F1/34 , H03C3/406 , H03D7/168 , H03B27/00 , H03F2200/57
摘要： A linear amplifier (103) has a negative feedback loop that has a closed loop gain and a forward path gain. The negative feedback loop is closed, such that quick changes in the closed loop gain are prevented, thereby reducing splatter. When the negative feedback loop is opened, quick changes in the closed loop gain are also prevented, thereby reducing splatter.
摘要翻译：线性放大器（103）具有负反馈回路，其具有闭环增益和前向通路增益。负反馈回路闭合，从而防止闭环增益的快速变化，从而减少飞溅。当负反馈回路打开时，也可以防止闭环增益的快速变化，从而减少飞溅。

2. 发明授权

US4471328A Variable frequency reference source responsive to digital data 失效
标题翻译：响应于数字数据的变频参考源
公开(公告)号：US4471328A
公开(公告)日：1984-09-11
申请号：US574193
申请日：1984-01-26
申请人： Ronald H. Chapman
发明人： Ronald H. Chapman
IPC分类号： H03C3/09 , H03K7/06 , H04L27/12
CPC分类号： H03C3/0966 , H03C3/0941 , H03C3/095 , H03K7/06 , H04L27/12
摘要： A circuit for changing the frequency of a pulse train in response to a change in the average value of an applied digital signal applies the signal to be changed to a pulse subtractor. Application of a predetermined number of digital data signals of one sign causes the periodic subtraction of a pulse at the subtractor, thus reducing the average frequency at the output from the pulse subtractor. The signal at the output from the subtractor is applied to a pulse adder which adds a pulse to the subtracted pulse train in response to a predetermined number of data pulses of the opposite sign. The output pulse train is thus varied in frequency in respose to variation in the average value of the digital data input. The order of addition and subtraction may be reversed, and one of the functions can be performed in the feedback loop of a frequency synthesizer which receives the output pulse train as a reference signal.
摘要翻译：响应于所施加的数字信号的平均值的变化而改变脉冲串的频率的电路将要改变的信号施加到脉冲减法器。应用一个符号的预定数量的数字数据信号导致在减法器周期性地减法脉冲，从而减少脉冲减法器的输出处的平均频率。减法器的输出处的信号被施加到脉冲加法器，该脉冲加法器响应于相反符号的预定数量的数据脉冲将脉冲加到相减的脉冲序列上。因此，输出脉冲序列的频率变化，被认为是数字数据输入的平均值的变化。加法和减法的顺序可以相反，并且其中一个功能可以在接收输出脉冲串作为参考信号的频率合成器的反馈回路中执行。

3. 发明授权

US4233575A Wide frequency range current-controlled oscillator 失效
标题翻译：宽频率电流控制振荡器
公开(公告)号：US4233575A
公开(公告)日：1980-11-11
申请号：US034303
申请日：1979-04-30
申请人： Ronald H. Chapman , Kenneth A. Hansen
发明人： Ronald H. Chapman , Kenneth A. Hansen
IPC分类号： H03K3/02 , H03K3/0231 , H03K4/06 , H03K7/06 , H03K3/26
CPC分类号： H03K3/0231 , H03K3/02 , H03K4/06 , H03K7/06
摘要： A wide frequency range current-controlled oscillator (CCO) provides a digital output signal that is frequency controllable by an input control current. The CCO includes a differential voltage comparator coupled to a timing capacitor for controlling charging and discharging currents applied to the timing capacitor. The charging and discharging currents are dependent on the input control current. The magnitude of the discharging current may be varied to control the duty cycle of the digital output signal.
摘要翻译：宽频率电流控制振荡器（CCO）提供可由输入控制电流进行频率控制的数字输出信号。 CCO包括耦合到定时电容器的差分电压比较器，用于控制施加到定时电容器的充电和放电电流。充放电电流取决于输入控制电流。可以改变放电电流的大小以控制数字输出信号的占空比。

4. 发明授权

US4484354A Continuous tone decoder/encoder 失效
标题翻译：连续音解码器/编码器
公开(公告)号：US4484354A
公开(公告)日：1984-11-20
申请号：US197408
申请日：1980-10-16
申请人： Robert M. Bennett , Ronald H. Chapman
发明人： Robert M. Bennett , Ronald H. Chapman
IPC分类号： H04W88/02 , H04B1/48 , H04Q1/45
CPC分类号： H04W88/027
摘要： An improved encoder/decoder circuit which utilizes a phase locked loop frequency synthesizer configuration to permit both encoder and decoder operation. In addition, a sampling filter detector is employed to permit monolithic integration of the circuit and minimize sensitivity to vibration. The sampling filter detector has digitally controlled bandwidth which permits rapid response to reverse burst turn-off. In addition, the circuit includes a pulse adder to implement an energy limited reverse burst turn-off mode.
摘要翻译：一种改进的编码器/解码器电路，其利用锁相环频率合成器配置来允许编码器和解码器操作。此外，使用采样滤波器检测器来允许电路的单片集成并且使对振动的灵敏度最小化。采样滤波器检测器具有数字控制的带宽，允许快速响应反向脉冲串关断。此外，该电路包括一个脉冲加法器，以实现能量限制反向脉冲串关断模式。

5. 发明授权

US5051704A Feedforward distortion cancellation circuit 失效
标题翻译：前馈失真消除电路
公开(公告)号：US5051704A
公开(公告)日：1991-09-24
申请号：US479498
申请日：1990-02-06
申请人： Ronald H. Chapman , William J. Turney
发明人： Ronald H. Chapman , William J. Turney
IPC分类号： H03F1/32
CPC分类号： H03F1/3235 , H03F2201/3212
摘要： A feedforward distortion cancellation circuit active control of both cancellation loops and a pilot signal and using least means squared circuits in both cancellation loops is disclosed. According to the invention, by using a pilot signal as the reference signal in a least means squared cancellation circuit, the required level of cancellation is reduced and thus it is easier to fabricate the circuit and the circuit is more stable.
摘要翻译：公开了一种前馈失真消除电路对消除环路和导频信号的有效控制，并且在两个消除环路中使用最小均方平方电路。根据本发明，通过使用导频信号作为最小均方消除电路中的参考信号，所需的消除电平降低，因此制造电路更容易，电路更稳定。

6. 发明授权

US4827191A Adaptive range/DC restoration circuit or use with analog to digital convertors 失效
标题翻译：自适应范围/直流恢复电路或与模数转换器配合使用
公开(公告)号：US4827191A
公开(公告)日：1989-05-02
申请号：US93468
申请日：1987-09-08
申请人： Ronald H. Chapman
发明人： Ronald H. Chapman
IPC分类号： H03M1/00 , H03M1/18
CPC分类号： H03M1/16 , H03M1/361
摘要： An adaptive range circuit (10) suitable for use with an analog to digital convertor (11) having operating range control inputs. The invention includes a peak detection unit (12) that can include a positive peak detector (13) and a negative peak detector (14) that provide signals representative of positive and negative peaks for the incoming analog signal to be digitized. These representative signals can be utilized to control the operating range of the A/D convertor (11).
摘要翻译：适用于具有操作范围控制输入的模数转换器（11）的自适应范围电路（10）。本发明包括峰值检测单元（12），其可以包括正峰值检测器（13）和负峰值检测器（14），该正峰值检测器（13）和负峰值检测器（14）提供表示要数字化的输入模拟信号的正和负峰值的信号。这些代表信号可用于控制A / D转换器（11）的工作范围。

7. 发明授权

US4188582A Simulcast transmission system having phase-locked remote transmitters 失效
标题翻译：具有锁相远程发射机的联播传输系统
公开(公告)号：US4188582A
公开(公告)日：1980-02-12
申请号：US894671
申请日：1978-04-10
申请人： Gary A. Cannalte , Ronald H. Chapman , Walter J. Rozanski, Jr.
发明人： Gary A. Cannalte , Ronald H. Chapman , Walter J. Rozanski, Jr.
IPC分类号： H04B1/04 , H04H20/67 , H04J3/06 , H04L7/033 , H04B7/00
CPC分类号： H04H20/67 , H04J3/0638 , H04L7/033
摘要： A simulcast transmission system is provided where a reference signal transmitted from a central station is utilized to phase-lock transmitters located at remote stations. The remote stations include a receiver for receiving the transmitted reference signal and a signal conditioner for conditioning the received reference signal for application to the transmitters. The transmitters include a phase-locked loop which may be followed by a multiplier for providing transmitter signals of predetermined frequencies. All the transmitters at the remote stations are phase locked to the reference signal transmitted from the central station. In the event that the reference signal transmitted by the central station is interrupted, the signal conditioner of the remote stations will operate in an open-loop fashion to provide the conditioned reference signal during the interruption. After the interruption has cleared, the signal conditioner is automatically phase synchronized to the reference signal and closed-loop operation is resumed.
摘要翻译：提供了一种联播传输系统，其中使用从中心站发送的参考信号来相位锁定位于远程站的发射机。远程站包括用于接收传送的参考信号的接收机和用于调节接收到的参考信号以供应用于发射机的信号调节器。发射机包括锁相环，其后面可以有一个用于提供预定频率的发射机信号的乘法器。远程站的所有发射机都被锁定到从中心站发送的参考信号。在中央站发送的参考信号中断的情况下，远程站的信号调理器将以开环方式工作，以在中断期间提供经调节的参考信号。中断清除后，信号调节器自动与参考信号相位同步，并恢复闭环运行。

8. 发明授权

US5021753A Splatter controlled amplifier 失效
标题翻译：飞溅控制放大器
公开(公告)号：US5021753A
公开(公告)日：1991-06-04
申请号：US562360
申请日：1990-08-03
申请人： Ronald H. Chapman
发明人： Ronald H. Chapman
IPC分类号： H03G3/20 , H04B1/04
CPC分类号： H03G3/3042 , H04B2001/0433
摘要： An amplifier circuit uses a microprocessor to count occurrences of the output stage going into saturation to decide when to control input levels to the amplifier. When the output amplifier stage saturates too frequently, the microprocessor controls a scaling line that effectively attenuates input levels to the amplifier, eliminating saturation levels. When the output stage saturates too infrequently, input levels to the amplifier are increased.
摘要翻译：放大器电路使用微处理器对输出级进入饱和状态进行计数，以决定何时控制放大器的输入电平。当输出放大器级饱和太频繁时，微处理器控制一个缩放线，可有效衰减放大器的输入电平，消除饱和电平。当输出级不经常饱和时，放大器的输入电平增加。

9. 发明授权

US4475243A Isolation method and apparatus for a same frequency repeater 失效
标题翻译：相同频率中继器的隔离方法和装置
公开(公告)号：US4475243A
公开(公告)日：1984-10-02
申请号：US451984
申请日：1982-12-21
申请人： Percy P. Batlivala , Richard S. Kommrusch , Ronald H. Chapman
发明人： Percy P. Batlivala , Richard S. Kommrusch , Ronald H. Chapman
IPC分类号： H04B7/015 , H04B7/14 , H04B7/15 , H04B7/155
CPC分类号： H04B7/15564 , H04B1/525
摘要： An apparatus for minimizing the spillover signal from the transmitter to the receiver in a same frequency repeater includes a mechanism for generating a receiver first injection signal carrying the modulation component of the transmitter signal, and a first mixer for mixing the received signals and the first injection signal to produce a first IF signal having one unmodulated IF component signal and another modulated IF component signal. A correlation and cancellation circuit is utilized to cancel the unmodulated IF component signal. A mechanism is provided for generating a second injection signal which carries the modulation component of the transmitter signal. A second mixer mixes the first IF signal and the second injection signal to produce a second IF signal such that the modulation component of the spillover signal is substantially cancelled. Time synchronization mechanisms are preferably provided to adjust the phase of the modulation component of the transmitted signal as carried by the first and second injection signals such that it arrives at the first and second mixers in phase synchronization with the modulation component of the spillover signal. This invention also contemplates a method for canceling the modulation component of the spillover signal.
摘要翻译：一种用于在相同的频率转发器中将从发射机到接收机的溢出信号最小化的装置包括用于产生承载发射机信号的调制分量的接收机第一注入信号的机制，以及用于混合接收信号和第一次注入的第一混频器信号以产生具有一个未调制IF分量信号和另一个调制IF分量信号的第一IF信号。利用相关和消除电路来消除未调制的IF分量信号。提供了一种用于产生承载发射机信号的调制分量的第二注入信号的机制。第二混频器混合第一IF信号和第二注入信号以产生第二IF信号，使得溢出信号的调制分量基本上被消除。优选地提供时间同步机制以调整由第一和第二注入信号携带的发射信号的调制分量的相位，使得其与溢出信号的调制分量相位同步到达第一和第二混频器。本发明还考虑了一种用于消除溢出信号的调制分量的方法。

10. 发明授权

US4451930A Phase-locked receiver with derived reference frequency 失效
标题翻译：具有派生参考频率的锁相接收机
公开(公告)号：US4451930A
公开(公告)日：1984-05-29
申请号：US403972
申请日：1982-08-02
申请人： Ronald H. Chapman , Andrew F. Peterson
发明人： Ronald H. Chapman , Andrew F. Peterson
IPC分类号： H03L7/183 , H03L7/23 , H04B1/26
CPC分类号： H03L7/183 , H03L7/23
摘要： An improved phase locked loop receiver for use in a simulcast transmission system is disclosed whereby the phase locked loop receiver is used as a means to distribute a common reference frequency to all of the transmitters in a simulcast system. By phase locking the link receivers at each of the simulcast transmitters to the carrier of the link transmitter, a common reference is obtained. This allows each of the synthesized simulcast transmitters to be phase locked to a common reference. The Phase Locked Receiver (PLR) uses a reference frequency derived from the receiver IF frequency. The injection oscillator of the receiver is phase locked to this reference.
摘要翻译：公开了一种用于联播传输系统的改进的锁相环接收机，其中锁相环接收机被用作将共同参考频率分配给同时播送系统中的所有发射机的装置。通过将每个同播发射机处的链路接收机相位锁定到链路发射机的载波，获得公共参考。这允许每个合成的联播发射机被锁相到公共参考。锁相接收器（PLR）使用从接收器IF频率导出的参考频率。接收器的注射振荡器被锁定到该参考。

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