专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP0708524B1 Amplifier with multiple switched stages 失效
标题翻译：放大器具有连接各个阶段
公开(公告)号：EP0708524B1
公开(公告)日：2000-02-02
申请号：EP95120547.5
申请日：1992-09-23
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03F3/217
CPC分类号： H03F3/24 , H03F1/32 , H03F1/52 , H03F3/2178

2. 发明授权

EP0234936B1 AM radio transmitter 失效
标题翻译：无线电发射机
公开(公告)号：EP0234936B1
公开(公告)日：1993-08-25
申请号：EP87301668.7
申请日：1987-02-25
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03K7/08 , H03C1/16 , H04B1/04
CPC分类号： H03C1/16 , H03K7/08

3. 发明公开

EP0714165A1 Amplifier with multiple switched stages 失效
标题翻译：放大器具有连接各个阶段
公开(公告)号：EP0714165A1
公开(公告)日：1996-05-29
申请号：EP95120546.7
申请日：1992-09-23
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03F3/217
CPC分类号： H03F3/24 , H03F1/32 , H03F1/52 , H03F3/2178
摘要： An amplifier is responsive to a signal source 38 having a predetermined spectrum and predetermined maximum amplitude. The amplifier comprises at least several stages 209.1-209.48, 122.1-122.48 activated only to one of two bi-level states controlled in response to the value of the source exceeding a threshold for each stage, each stage having a different threshold, said thresholds and source being arranged so that the stages change between said bi-level states as the value of the source changes relative to the thresholds of the different stages, bi-level outputs associated with the hi-level states of the plural stages being summed together 121, and an oscillator 64 for deriving a continuously varying output for varying the values of the thresholds, the output having a small peak-to-peak value relative to the predetermined maximum amplitude, the oscillator output including variable frequencies, some of the variable frequencies having a tendency to introduce a perceptible noise level in the outputs of the stages over the predetermined spectrum. The amplifier has means 70, 72 for spreading the noise level into a wider spectrum and reducing said noise level at all frequencies in the predetermined spectrum.

4. 发明公开

EP0708524A2 Amplifier with multiple switched stages 失效
标题翻译：具有多个开关级的放大器
公开(公告)号：EP0708524A2
公开(公告)日：1996-04-24
申请号：EP95120547.5
申请日：1992-09-23
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03F3/217
CPC分类号： H03F3/24 , H03F1/32 , H03F1/52 , H03F3/2178
摘要： An amplifier is responsive to a signal source (38) and comprises at least several power output stages (40.1-40.48) activated only to one of two bi-level states controlled in response to the value of the source, bi-level outputs associated with the bi-level states of the plural stages being summed together to be an output wave that is a predetermined stepwise function of the signal of the source. The amplifier has means (105) for sensing a failure of any of said stages while the amplifier is responsive to the signal of the source and means (121, 125, 126, 127, 133) responsive to a failure being sensed by the means for sensing for controlling the power output stages so that the output wave remains the predetermined stepwise function despite the presence of the failure.
摘要翻译：放大器响应于信号源（38）并且包括至少几个功率输出级（40.1-40.48），其仅响应于源的值而被控制的两个双电平状态中的一个，双电平输出与多级的双电平状态被加在一起成为输出波，该输出波是源的信号的预定的阶梯函数。放大器具有用于在放大器响应于信号源的信号时感测所述级中的任何级的故障的装置（105），并且响应于由用于该装置的装置感测到故障的装置（121,125,126,127,133）感测用于控制功率输出级，使得尽管存在故障，输出波仍保持预定的逐步功能。

5. 发明公开

EP0234936A2 AM radio transmitter 失效
标题翻译： AM-Radiosender。
公开(公告)号：EP0234936A2
公开(公告)日：1987-09-02
申请号：EP87301668.7
申请日：1987-02-25
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03K7/08 , H03C1/16 , H04B1/04
CPC分类号： H03C1/16 , H03K7/08
摘要： An Rf-AM transmitter of the type including a power pulse amplifier driving an RF amplifier with a modulating voltage via a low pass filter includes a pulse width modulator for deriving variable frequency pulses having a frequency that is a direct function of an RMS like function of the amplitude and frequency of an information source; the width of the pulses is determined by the instantaneous amplitude of the information signal source. The pulse width modulator includes a constant amplitude, variable frequencytriangular wave voltage controlled oscillator responsive to a DC signal representing the frequency and amplitude of the information source. In response to amplitude crossovers between the variable frequency triangular wave and the information source, transitions in the pulse width modulated wave are derived.
摘要翻译：包括通过低通滤波器驱动具有调制电压的RF放大器的功率脉冲放大器的类型的Rf-AM发射器包括：脉冲宽度调制器，用于导出可变频率脉冲，该频率是RMS的直接函数，信息源的幅度和频率; 脉冲宽度由信息信号源的瞬时振幅决定。脉冲宽度调制器包括响应于表示信息源的频率和幅度的DC信号的恒定幅度可变频率三角波压控振荡器。响应于可变频三角波与信息源之间的振幅交叉，导出了脉冲宽度调制波中的跃迁。

6. 发明公开

EP0708524A3 Amplifier with multiple switched stages 失效
公开(公告)号：EP0708524A3
公开(公告)日：1996-05-15
申请号：EP95120547.5
申请日：1992-09-23
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03F3/217
CPC分类号： H03F3/24 , H03F1/32 , H03F1/52 , H03F3/2178
摘要： An amplifier is responsive to a signal source (38) and comprises at least several power output stages (40.1-40.48) activated only to one of two bi-level states controlled in response to the value of the source, bi-level outputs associated with the bi-level states of the plural stages being summed together to be an output wave that is a predetermined stepwise function of the signal of the source. The amplifier has means (105) for sensing a failure of any of said stages while the amplifier is responsive to the signal of the source and means (121, 125, 126, 127, 133) responsive to a failure being sensed by the means for sensing for controlling the power output stages so that the output wave remains the predetermined stepwise function despite the presence of the failure.

7. 发明公开

EP0236068A3 AM-RF Transmitter with compensation for power supply variations 失效
标题翻译：具有补偿电源变压器的AM-RF发射器
公开(公告)号：EP0236068A3
公开(公告)日：1989-07-12
申请号：EP87301667.9
申请日：1987-02-25
申请人： Continental Electronics Corporation
发明人： Hulsey, Gilmer L. , Weaver, Bryan A.
IPC分类号： H04B1/04 , H03C1/02
CPC分类号： H03C1/02 , H03F1/30 , H04B1/04 , H04B1/0475 , H04B1/1607
摘要： An AM-RF transmitter includes a transmitter stage having a DC power supply terminal energizing by an AC to DC converter including reactances having a resonant frequency approaching frequencies of an information, modulating signal. The voltage applied by the supply to the DC power supply terminal is reduced to such an extent as to induce distortion in the transmitted AM-RF carrier in response to the transmitter stage being modulated by positive amplitude variations having frequencies that approach the resonant frequency. The amplitude of the transmitter stage modulation is increased when the distortion would otherwise occur to substantially prevent the distortion. The information signal is modified in amplitude by only AC coupling a replica of the DC power supply voltage variations to one input of a four quadrat multiplier, having a second input responsive to the information signal.

8. 发明公开

EP0234936A3 AM radio transmitter 失效
标题翻译：脉冲调制器用于AM-RF发射器
公开(公告)号：EP0234936A3
公开(公告)日：1989-07-12
申请号：EP87301668.7
申请日：1987-02-25
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03K7/08 , H03C1/16 , H04B1/04
CPC分类号： H03C1/16 , H03K7/08
摘要： An Rf-AM transmitter of the type including a power pulse amplifier driving an RF amplifier with a modulating voltage via a low pass filter includes a pulse width modulator for deriving variable frequency pulses having a frequency that is a direct function of an RMS like function of the amplitude and frequency of an information source; the width of the pulses is determined by the instantaneous amplitude of the information signal source. The pulse width modulator includes a constant amplitude, variable frequencytriangular wave voltage controlled oscillator responsive to a DC signal representing the frequency and amplitude of the information source. In response to amplitude crossovers between the variable frequency triangular wave and the information source, transitions in the pulse width modulated wave are derived.

9. 发明授权

EP0714165B1 Amplifier with multiple switched stages 失效
标题翻译：具有连接放大器的多个级
公开(公告)号：EP0714165B1
公开(公告)日：1999-11-17
申请号：EP95120546.7
申请日：1992-09-23
申请人： Continental Electronics Corporation
发明人： Weaver, Bryan A.
IPC分类号： H03F3/217
CPC分类号： H03F3/24 , H03F1/32 , H03F1/52 , H03F3/2178

10. 发明公开

EP0236068A2 AM-RF Transmitter with compensation for power supply variations 失效
标题翻译： AM-RF发射器与所述电源的变化的补偿。
公开(公告)号：EP0236068A2
公开(公告)日：1987-09-09
申请号：EP87301667.9
申请日：1987-02-25
申请人： Continental Electronics Corporation
发明人： Hulsey, Gilmer L. , Weaver, Bryan A.
IPC分类号： H04B1/04 , H03C1/02
CPC分类号： H03C1/02 , H03F1/30 , H04B1/04 , H04B1/0475 , H04B1/1607
摘要： An AM-RF transmitter includes a transmitter stage having a DC power supply terminal energizing by an AC to DC converter including reactances having a resonant frequency approaching frequencies of an information, modulating signal. The voltage applied by the supply to the DC power supply terminal is reduced to such an extent as to induce distortion in the transmitted AM-RF carrier in response to the transmitter stage being modulated by positive amplitude variations having frequencies that approach the resonant frequency. The amplitude of the transmitter stage modulation is increased when the distortion would otherwise occur to substantially prevent the distortion. The information signal is modified in amplitude by only AC coupling a replica of the DC power supply voltage variations to one input of a four quadrat multiplier, having a second input responsive to the information signal.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式