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公开(公告)号：JP2008270977A
公开(公告)日：2008-11-06
申请号：JP2007108445
申请日：2007-04-17
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a high-frequency amplifying circuit which can improve linearity by suppressing a gain variation for a change of input electric power.
SOLUTION: In a high-frequency amplifying circuit, a high-frequency signal divided into two by a divider 12 is amplified by FETs 24-1 and 26-1 to be combined. A fixed bias voltage is applied to a gate terminal 24g of the FET 24-1. A bias circuit 36 applying a bias voltage to a gate terminal 26g of the FET 26-1 includes a coupler 42 decoupling a part of the high-frequency signal inputted to the FET 26-1, a monitoring FET 46 amplifying the high-frequency signal decoupled by the coupler 42, a fixed current bias circuit 44 adjusting a bias voltage applied to a gate terminal 46g of the monitoring FET 46 so that the bias current in a drain terminal 46d of the monitoring FET 46 converges to a fixed value, and a voltage conversion circuit 48 correcting the bias voltage in the gate terminal 46g of the monitoring FET 46 by a predetermined gain and an offset so that the corrected voltage applies to the gate terminal 26g of the FET 26-1.
COPYRIGHT: (C)2009,JPO&INPIT摘要翻译： 解决的问题：提供一种可以通过抑制输入电力变化的增益变化来提高线性度的高频放大电路。 解决方案：在高频放大电路中，由分频器12分成两个的高频信号由FET24-1和26-1放大以进行组合。 将固定的偏置电压施加到FET 24-1的栅极端子24g。 向FET 26-1的栅极端子26g施加偏置电压的偏置电路36包括使输入到FET 26-1的高频信号的一部分去耦的耦合器42，放大高频信号 由耦合器42去耦合固定电流偏置电路44，调整施加到监视FET46的栅极端子46g的偏置电压，使得监视FET46的漏极端子46d中的偏置电流收敛到固定值，并且 电压转换电路48将监视FET46的栅极端子46g中的偏置电压校正预定的增益和偏移，使得校正的电压施加到FET 26-1的栅极端子26g。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2006339888A
公开(公告)日：2006-12-14
申请号：JP2005160479
申请日：2005-05-31
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a high frequency amplifier circuit which stably reduces the distortion of output signals when combining and outputting signals after amplifying them.
SOLUTION: An error signal extractor circuit 56 couples an input signal Sin(t) taken out of a coupler 52 with a high frequency output signal Sout(t) taken out of a coupler 54 to extract an error signal component e(t) remaining in the high frequency output signal Sout(t). A synchronous detector 58 performs synchronous detection of the high frequency output signal Sout(t) after coupling by the error signal extractor circuit 56 in phase and orthogonal phase, using an error signal e(t) taken out of a signal separator 12 as a reference signal, thereby controlling the gain of an amplitude adjuster 40 and the phase quantity of a phase adjuster 42, based on detected voltages generated by the coherent detection in phase and orthogonal phase.
COPYRIGHT: (C)2007,JPO&INPIT摘要翻译： 要解决的问题：提供一种高频放大器电路，其在放大信号之后组合和输出信号时，稳定地降低输出信号的失真。 解决方案：误差信号提取器电路56将从耦合器52取出的输入信号Sin（t）与从耦合器54取出的高频输出信号Sout（t）耦合，以提取误差信号分量e（t ）保持在高频输出信号Sout（t）中。 使用从信号分离器12取出的误差信号e（t）作为参考，同相检测器58在误差信号提取器电路56在相位和正交相位耦合之后执行高频输出信号Sout（t）的同步检测 信号，从而基于由相位和正交相位中的相干检测产生的检测电压来控制幅度调节器40的增益和相位调整器42的相位量。 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2012165306A
公开(公告)日：2012-08-30
申请号：JP2011025776
申请日：2011-02-09
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a receiver in a time division radio communication system, capable of protecting a receiving circuit against damage due to an excessive power amplitude signal with a relatively simple structure.SOLUTION: A receiver includes a distribution part which divides electric power, in response to input of a reception signal from an antenna, into a first signal and a second signal and outputs them, a resonance part which has different resonant frequencies depending on whether the radio communication system is in transmission or in reception, and a combining part which combines two different received signals into one signal and outputs it. The first signal and the second signal output from the distribution part are passed through different resonance parts respectively, and then combined at the combining part.
摘要翻译： 要解决的问题：提供一种时分无线电通信系统中的接收机，其能够以相对简单的结构保护接收电路免受由于过大的功率振幅信号造成的损坏。 解决方案：接收机包括分配部分，其响应于来自天线的接收信号的输入将电功率分成第一信号和第二信号并将其输出，谐振部分具有不同的谐振频率，这取决于 无线电通信系统是在传输还是在接收中，以及组合部分，其将两个不同的接收信号组合成一个信号并将其输出。 从分配部分输出的第一信号和第二信号分别通过不同的共振部分，然后在组合部分组合。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JP2009164900A
公开(公告)日：2009-07-23
申请号：JP2008000652
申请日：2008-01-07
申请人： Japan Radio Co Ltd , 日本無線株式会社
IPC分类号： H03F3/60
摘要： PROBLEM TO BE SOLVED: To facilitate adjustment of a connection position of a stub for suppressing a high-frequency component.
SOLUTION: In this amplifier where an input matching circuit 12 and an output matching circuit 14 are connected to an input terminal of an FET 10 and an output terminal, respectively, a ring type stub 18 is connected to the output terminal of the FET 10 for suppressing a high-frequency component. The ring type stub 18 is arranged to set its one side in parallel to a transmission line 16. The total length of the ring type stub 18 is set to λ/(2n) when assuming that the wavelength of a basic wave is λ when suppressing n-order harmonic.
COPYRIGHT: (C)2009,JPO&INPIT摘要翻译： 要解决的问题：为了便于调整用于抑制高频分量的短截线的连接位置。 解决方案：在该放大器中，输入匹配电路12和输出匹配电路14分别连接到FET10和输出端子的输入端子，环型短截线18连接到 用于抑制高频分量的FET 10。 环型短截线18被布置为将其一侧与传输线16平行设置。当假设基本波的波长为λ时，环形短截线18的总长度被设定为λ/（2n），当抑制 n阶谐波。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008258986A
公开(公告)日：2008-10-23
申请号：JP2007099773
申请日：2007-04-05
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a high frequency amplifier circuit capable of suppressing gain fluctuation due to variation in input power to improve linearity. SOLUTION: Amplifiers 24, 26 amplify a wide area modulation signal distributed into two by a distributor 12. A bias circuit 34 impresses fixed bias voltage to an input terminal of the amplifier 24. A bias circuit 36 adjusts bias voltage impressed on an input terminal of the amplifier 26 so that bias current is converged to a fixed value by a predetermined time coefficient to fluctuation of the bias current in an output terminal of the amplifier 26. The time constant here is set to a value sufficiently larger than an inverse number of bandwidth of a wide area modulation signal. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译： 要解决的问题：提供一种能够抑制由于输入功率变化引起的增益波动以提高线性度的高频放大器电路。 放大器24,26放大由分配器12分成两个的广域调制信号。偏置电路34给固定偏置电压施加到放大器24的输入端。偏置电路36调节施加在放大器24上的偏置电压。 放大器26的输入端子，使得偏置电流以预定的时间系数收敛到固定值到放大器26的输出端子中的偏置电流的波动。这里的时间常数被设置为充分大于反相的值 广域调制信号的带宽数。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008067247A
公开(公告)日：2008-03-21
申请号：JP2006245029
申请日：2006-09-11
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a synthesizer that not only synthesizes signals outputted by two amplifiers, but also improves their power efficiency, and also to provide a device applying the same.
SOLUTION: The synthesizer includes: a first linear wire conductor whose end is connected to an output terminal of a first amplifier; a second linear wire conductor whose end is connected to the output terminal of a second terminal; an edge conductor connected between the end of the first wire conductor on the first wire conductor that is not connected to the output terminal of the first amplifier and the end of the second wire conductor that is not connected to the output terminal of the second amplifier; and conductive materials connected between the first and second wire conductors. In the synthesizer, signals outputted by the first amplifier and second amplifier are synthesized to be outputted from the edge conductor. Connection positions of the conductive materials are determined by power dissipation in the first and second amplifiers.
COPYRIGHT: (C)2008,JPO&INPIT摘要翻译： 解决的问题：提供一种合成器，其不仅合成由两个放大器输出的信号，而且提高其功率效率，并且还提供应用该放大器的装置。 解决方案：合成器包括：第一线性导线，其端部连接到第一放大器的输出端; 第二线状导体，其端部连接到第二端子的输出端子; 连接在第一线路导体的未连接到第一放大器的输出端子的第一线路导体的端部与未连接到第二放大器的输出端子的第二线路导体的端部之间的边缘导体; 以及连接在第一和第二导线之间的导电材料。 在合成器中，由第一放大器和第二放大器输出的信号被合成从边缘导体输出。 导电材料的连接位置由第一和第二放大器中的功率消耗决定。 版权所有（C）2008，JPO＆INPIT
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7.发明专利Distortion detection circuit, and feed-forward amplifier and pre-distortion amplifier using it 审中-公开失真检测电路，以及使用其的进给放大器和预失真放大器
公开(公告)号：JP2006033487A
公开(公告)日：2006-02-02
申请号：JP2004210286
申请日：2004-07-16
申请人： Japan Radio Co Ltd , 日本無線株式会社
发明人： TAKAHASHI HIDENORI , YAMASHITA KAZUO , KASHIMURA KAZUNORI , ADACHI MASAYUKI , KIMURA JUICHIRO , YODA TAMAKI , OGUCHI NOBUTAKA
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To provide a circuit which detects a distortion component of an extremely small level with sufficient precision.
SOLUTION: A distortion generator 65 generates a reference distortion signal including a distortion component of the same frequency of a distortion component generated in a main amplifier 5 based on a main signal taken out by a coupler 15. The reference distortion signal is coupled in a reverse phase to the main signal in a directional coupler 18, and then, supplied to a distortion detection synchronization circuit 75. A low distortion output signal taken out of a coupler 13 is coupled in a reverse phase to the main signal in a directional coupler 17, and then, supplied to the distortion detection synchronization detection circuit 75. The distortion detection synchronization circuit 75 generates a DC voltage which shows a distortion component included in the low distortion output signal by synchronously detecting the low distortion output signal in the same phase and an orthogonal phase using the reference distortion signal.
COPYRIGHT: (C)2006,JPO&NCIPI摘要翻译： 要解决的问题：提供以足够的精度检测极小水平的失真分量的电路。 解决方案：失真发生器65基于由耦合器15取出的主信号，产生包括在主放大器5中产生的失真分量相同频率的失真分量的参考失真信号。参考失真信号被耦合 与定向耦合器18中的主信号反相，然后提供给失真检测同步电路75.从耦合器13取出的低失真输出信号以与方向性的方向相反的主信号耦合 耦合器17，然后提供给失真检测同步检测电路75.失真检测同步电路75通过同步地检测低失真输出信号中的低失真输出信号来产生表示包含在低失真输出信号中的失真分量的直流电压 以及使用参考失真信号的正交相位。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2006333167A
公开(公告)日：2006-12-07
申请号：JP2005155045
申请日：2005-05-27
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To provide a high-frequency amplifier circuit which improves a strain characteristic while keeping high-efficiency amplification even under a sharp change of an input signal level.
SOLUTION: When the amplitude V(t) (average amplitude level) of an input signal Sin(t) detected by an input level judgement circuit 22 drops to a set value Vref or lower, a signal divider 12 lowers the amplitude level of a high-frequency signal pair to be inputted into amplifiers 14-1 and 14-2 while a power supply control circuit 24 lowers the saturation output level of the amplifiers 14-1 and 14-2. Consequently, even if the amplitude V(t) of the input signal Sin(t) decreases, error signal components remaining in an output high-frequency signal Sout(t) are reduced since the amplitude level of error signals generated by the signal divider 12 is lowered.
COPYRIGHT: (C)2007,JPO&INPIT摘要翻译： 要解决的问题：提供即使在输入信号电平急剧变化的同时保持高效率放大的同时提高应变特性的高频放大器电路。 解决方案：当由输入电平判断电路22检测到的输入信号Sin（t）的振幅V（t）（平均振幅电平）下降到设定值Vref或更低时，信号分频器12降低振幅电平 一个高频信号对被输入到放大器14-1和14-2中，同时电源控制电路24降低放大器14-1和14-2的饱和输出电平。 因此，即使输入信号Sin（t）的振幅V（t）减小，输出高频信号Sout（t）中残留的误差信号分量也减小，因为由信号分频器12产生的误差信号的振幅电平 被降低 版权所有（C）2007，JPO＆INPIT
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公开(公告)号：JP2006270882A
公开(公告)日：2006-10-05
申请号：JP2005089692
申请日：2005-03-25
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To improve distortion characteristics for high-frequency amplifying circuits, using a simple circuit configuration.
SOLUTION: The amount of phase transitions for each of a pair of the same phase signals Sp(t)/2
0.5 in variable phase transition devices 50-1 and 50-2 is controlled so that the average electric power level of a pair of high-frequency signals S1(t) and S2(t) is equal or lower than a configured level, based on the saturation output level and the gain of amplifiers 14-1 and 14-2. The amounts of amplitude suppressed for a high-frequency output signal Sout(t) can be decreased by this control. In this method, high responsiveness is not required for the control of the amount of phase transitions for the pair of the same phase signals Sp(t)/2
0.5 , and will not lead to turning complex or rise in cost of the control circuit.
COPYRIGHT: (C)2007,JPO&INPIT摘要翻译： 要解决的问题：使用简单的电路配置来改善高频放大电路的失真特性。
解决方案：控制可变相变装置50-1和50-2中的一对相同相位信号Sp（t）/ 2
0.5 中的每一个的相变量，使得 基于放大器14-1和14-2的饱和输出电平和增益，一对高频信号S1（t）和S2（t）的平均功率电平等于或低于配置电平。 通过该控制可以减小高频输出信号Sout（t）所抑制的振幅。 在这种方法中，对于相同相位信号Sp（t）/ 2 0.5 的相位转移量的控制不需要高响应度，并且不会导致转动复杂或上升 在控制电路的成本。 版权所有（C）2007，JPO＆INPIT -
公开(公告)号：JP2012156878A
公开(公告)日：2012-08-16
申请号：JP2011015527
申请日：2011-01-27
申请人： Japan Radio Co Ltd , 日本無線株式会社
摘要： PROBLEM TO BE SOLVED: To improve reception performance without degradation, for maintaining it stably, relating to an input protection circuit that protects a circuit which applies a predetermined process to a reception wave.SOLUTION: The excessive input protection circuit includes attenuation means used for attenuating a disturbance or the reflection wave arriving at an antenna system as well as the reflection wave of transmission wave that occurs on the antenna system, control means which guides the reflection wave or disturbance to the attenuation means instead of a specified circuit during a transmission period in which the antenna system is used for transmission, and guides the reception wave to the specified circuit and the attenuation means respectively when the level of reception wave comes below a predetermined threshold value and when it comes over it during a reception period in which the antenna system is used for reception, and reception object selecting means which performs a reception process on the reception wave supplied through the specified circuit or the attenuation means during the reception period.
摘要翻译： 要解决的问题：为了提高接收性能而不劣化，为了保持其稳定，涉及保护对接收波施加预定处理的电路的输入保护电路。
解决方案：过多的输入保护电路包括用于衰减到达天线系统的干扰或反射波的衰减装置以及在天线系统上发生的发射波的反射波，引导反射波的控制装置 或扰动衰减装置而不是在天线系统用于传输的传输周期期间的指定电路，并且当接收波的电平达到预定阈值时分别将接收波引导到指定电路和衰减装置 值，并且在天线系统用于接收的接收时段期间超过它的接收对象选择装置以及在接收周期期间对通过指定电路或衰减装置提供的接收波进行接收处理的接收对象选择装置。 版权所有（C）2012，JPO＆INPIT
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