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公开(公告)号：EP0539224A2
公开(公告)日：1993-04-28
申请号：EP92309741.4
申请日：1992-10-23
申请人： JAPAN RADIO CO., LTD , NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT MOBILE COMMUNICATIONS NETWORK INC.
摘要： In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation signal and a filtered receiver signal of the receiver filter into a coupled signal. A low noise amplifier (13) amplifies the coupled signal into an amplified signal which comprises an amplified receiver signal derived from the filtered receiver signal and an amplified pilot oscillation signal derived from the pilot oscillation siganl. A branching filter (27) branches the amplified signal into the amplified receiver signal and the amplified pilot oscillation signal. A pilot signal detector unit (28) detects the amplified pilot oscillation signal to produce a direct pilot signal. A failure monitoring unit (29) monitors the direct pilot signal to produce a fault signal when the direct pilot signal is found faulty.
摘要翻译： 在包括具有频率衰减频带的接收机滤波器（12）和用于在频率衰减频带中产生具有导频的导频振荡信号的导频振荡器（25）的接收机中，耦合器（26）将导频振荡信号和 将接收机滤波器的滤波后的接收机信号转换为耦合信号。 低噪声放大器（13）将耦合信号放大为放大信号，该放大信号包括从经滤波的接收机信号导出的放大的接收机信号和从导频振荡信号导出的放大的导频振荡信号。 分路滤波器（27）将放大的信号分支为放大的接收机信号和放大的导频振荡信号。 导频信号检测器单元（28）检测放大的导频振荡信号以产生直接导频信号。 当发现直接导频信号有故障时，故障监视单元（29）监视直接导频信号以产生故障信号。
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公开(公告)号：EP0539224A3
公开(公告)日：1993-08-11
申请号：EP92309741.4
申请日：1992-10-23
申请人： JAPAN RADIO CO., LTD , NIPPON TELEGRAPH AND TELEPHONE CORPORATION , NTT MOBILE COMMUNICATIONS NETWORK INC.
摘要： In a receiver comprising a receiver filter (12) with a frequency attenuation band and a pilot oscillator (25) for generating a pilot oscillation signal with a pilot frequency in the frequency attenuation band, a coupler (26) couples the pilot oscillation signal and a filtered receiver signal of the receiver filter into a coupled signal. A low noise amplifier (13) amplifies the coupled signal into an amplified signal which comprises an amplified receiver signal derived from the filtered receiver signal and an amplified pilot oscillation signal derived from the pilot oscillation siganl. A branching filter (27) branches the amplified signal into the amplified receiver signal and the amplified pilot oscillation signal. A pilot signal detector unit (28) detects the amplified pilot oscillation signal to produce a direct pilot signal. A failure monitoring unit (29) monitors the direct pilot signal to produce a fault signal when the direct pilot signal is found faulty.
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公开(公告)号：EP0539224B1
公开(公告)日：2002-01-23
申请号：EP92309741.4
申请日：1992-10-23
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公开(公告)号：EP0466123B1
公开(公告)日：1996-06-19
申请号：EP91111442.9
申请日：1991-07-09
IPC分类号： H03F1/32
CPC分类号： H03F1/3235 , H03F2201/3212
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公开(公告)号：EP0466123A1
公开(公告)日：1992-01-15
申请号：EP91111442.9
申请日：1991-07-09
IPC分类号： H03F1/32
CPC分类号： H03F1/3235 , H03F2201/3212
摘要： In a feed-forward amplifier which has an error detection circuit (1) for detecting a nonlinear distortion component of a main amplifier (7) and an error rejection circuit (2) for amplifying the detected distortion component by an auxiliary amplifier (12) and injecting it into the main amplifier to thereby cancel an error component, a first pilot signal (PS1) is injected into a signal input path and a second pilot signal (PS2) is injected into a signal amplification path of the error detection circuit. A first variable attenuator (24) and a first variable phase shifter (25) of the error detection circuit are adjusted by a control circuit (33) so that the level of the first pilot signal component on an error injection path of the error rejection circuit decreases to minimum. A second variable attenuator (26) and a second variable phase shifter (27) of the error rejection circuit are adjusted by the control circuit so that the level of the second pilot signal component on a signal output path decreases to a minimum. The first pilot signal component which appears on the signal output path is rejected by inserting therein a filter (32) or cancelled by supplying the error injection path or signal output path with the first pilot signal after adjusting its amplitude and phase. Alternatively, the frequency of the first pilot signal to be injected into the signal input path is spread to thereby lower the level of the first pilot signal per unit spectrum which appears on the signal output path.
摘要翻译： 在具有用于检测主放大器（7）的非线性失真分量的误差检测电路（1）和用于通过辅助放大器（12）放大检测到的失真分量的差错抑制电路（2）的前馈放大器中， 将其注入主放大器，从而消除误差分量，将第一导频信号（PS1）注入到信号输入路径中，并将第二导频信号（PS2）注入到误差检测电路的信号放大路径中。 通过控制电路（33）调整误差检测电路的第一可变衰减器（24）和第一可变移相器（25），使得误差电路的误差注入路径上的第一导频信号分量的电平 降至最低。 通过控制电路调整误差抑制电路的第二可变衰减器（26）和第二可变移相器（27），使得信号输出路径上的第二导频信号分量的电平降至最小。 在信号输出路径上出现的第一导频信号分量通过在调整其幅度和相位之后插入滤波器（32）或通过提供误差注入路径或信号输出路径与第一导频信号而被抵消而被拒绝。 或者，将要注入信号输入路径的第一导频信号的频率扩展，从而降低出现在信号输出路径上的每单位频谱的第一导频信号的电平。
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公开(公告)号：EP0539224B8
公开(公告)日：2002-10-09
申请号：EP92309741.4
申请日：1992-10-23
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公开(公告)号：EP1330063A1
公开(公告)日：2003-07-23
申请号：EP03008865.2
申请日：1995-12-04
IPC分类号： H04L5/06
CPC分类号： H04J1/06 , H03G3/30 , H03G3/3042 , H04J1/065 , H04J1/16 , H04J1/20 , H04L5/06 , H04L27/10 , H04L27/12 , H04L27/2621
摘要： Disclosed is an FSK signal multiplexer which combines the output signals from n m-ary FSK modulating means (5 1 -5 n ) by power combining means (6), where n and m are both integers equal to or greater than 2. The n m-ary FSK modulating means (5 1 -5 n ) shift their output frequencies in accordance with the sign of the input signals thereto based upon a common reference frequency signal from reference frequency oscillating means (8). Variable phase shifter means (47 1 -47 n ) for shifting the phase of the modulated signal from each m-ary FSK modulating means (5 1 -5 n ) and control means (48) are provided for setting the phase shift amount of the variable phase shifter means (47 1 -47 n ) so that the peak envelope power of the output from the power combining means (6) becomes small in accordance with the combination of symbols of the n input signals in synchronization with the timing at which the m-ary FSK modulating means switch their output frequencies in accordance with the input signals thereto.
摘要翻译： 公开了一种FSK信号多路复用器，其通过功率组合装置（6）组合来自n m个FSK调制装置（51-5n）的输出信号，其中n和m都是等于或大于2的整数。n m- 基于来自参考频率振荡装置（8）的公共参考频率信号，FSF调制装置（51-5n）根据其输入信号的符号来移位它们的输出频率。 提供用于移位来自每个多模FSK调制装置（51-5n）和控制装置（48）的调制信号的相位的可变移相器装置（471-47n），用于设定可变移相器装置 （471-47n），使得来自功率组合装置（6）的输出的峰值包络功率根据n个输入信号的符号的组合而变小，与M-ark FSK调制装置 根据输入信号切换输出频率。
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公开(公告)号：EP1014564A3
公开(公告)日：2001-05-23
申请号：EP99124916.0
申请日：1999-12-14
IPC分类号： H03F1/32
CPC分类号： H03F1/3229
摘要： In the balance adjustment using a pilot signals in a distortion detector and a distortion canceller of a feed-forward amplifier for amplifying a CDMA transmission signal, a pilot code is spread by a long code different from that of the CDMA transmission signal to obtain the pilot signal. The pilot signal is converted to a signal of the transmission frequency band, and the converted signal is injected into the transmission signal at the input side of the amplifier. The pilot signal frequency band is detected from the output of an auxiliary amplifier of the distortion canceller and converted to the base band, thereafter being despread to detect the pilot signal (code).
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公开(公告)号：EP1014480A2
公开(公告)日：2000-06-28
申请号：EP99124917.8
申请日：1999-12-14
摘要： A receiver directs the center of the main beam of the antenna directivity response in a desired direction by passing signals received by n antenna elements 1a to 1d through a phase shifter 3. An output from the phase shifter 3 is passed through a receiving filter 5 and is then amplified by a low noise amplifier 6 to be delivered as an output. The phase shifter 3 is confined together with the receiving filter 5 and the amplifier 6 in a cryostat 8, and the phase shifter 3 as well as the receiving filter 5 and the amplifier 6 are cooled down by cooling means 9 through a cold stage 9a, whereby the thermal noises generated therein are reduced to a minimum.
摘要翻译： 接收器通过将n个天线元件1a至1d接收的信号通过移相器3，将天线方向性响应的主波束的中心在期望的方向上引导。来自移相器3的输出通过接收滤波器5和 然后被低噪声放大器6放大，作为输出被输送。 移相器3与接收滤波器5和放大器6一起被限制在低温恒温器8中，并且移相器3以及接收滤波器5和放大器6通过冷却装置9通过冷级9a冷却， 由此其中产生的热噪声减小到最小。
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公开(公告)号：EP1087520A3
公开(公告)日：2001-04-18
申请号：EP00125616.3
申请日：1996-11-15
发明人： Kumagai, Ken , Nojima, Toshio , Narahashi, Shoichi
IPC分类号： H03F1/32
CPC分类号： H03F1/3229 , H03F1/3241
摘要： An amplifying device comprises signal separator means (43) for separating an input signal fed to an input terminal (1) into a main signal having its envelope power limited to a value below a predetermined value and a difference signal corresponding to the difference between said main signal and said input signal; a main amplifier (46) for amplifying said main signal; an auxiliary amplifier (47) for amplifying said difference signal; and power combining means (48) for combining the outputs from said main amplifier and said auxiliary amplifier into a composite output for output to an output terminal.
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