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1. 发明授权

US5258716A All-pass filter 失效
标题翻译：全通过滤器
公开(公告)号：US5258716A
公开(公告)日：1993-11-02
申请号：US913868
申请日：1992-07-15
申请人： Hiroshi Kondo , Tsuneo Tohyama , Hiroshi Tanigawa , Isao Fukai
发明人： Hiroshi Kondo , Tsuneo Tohyama , Hiroshi Tanigawa , Isao Fukai
IPC分类号： H03H11/12 , H03H11/18 , H03F1/34
CPC分类号： H03H11/18
摘要： An all-pass filter includes an adder which comprises a variable conductance amplifier and a capacitor connected to the output terminal thereof. The adder is being arranged to add the output of a band pass filter and an input signal together.
摘要翻译：全通滤波器包括加法器，其包括可变电导放大器和连接到其输出端的电容器。加法器被布置成将带通滤波器的输出和输入信号加在一起。

2. 发明授权

US5298813A Polar leapfrog filter 失效
标题翻译：极地跨越过滤器
公开(公告)号：US5298813A
公开(公告)日：1994-03-29
申请号：US863413
申请日：1992-04-03
申请人： Hiroshi Tanigawa , Isao Fukai , Hiroshi Kondo , Tsuneo Tohyama
发明人： Hiroshi Tanigawa , Isao Fukai , Hiroshi Kondo , Tsuneo Tohyama
IPC分类号： H03H11/12 , H03H11/04 , H03F34/04 , H03F1/34
CPC分类号： H03H11/0466 , H03H11/045
摘要： A polar leapfrog filter includes at least one polar network. The polar network comprises a differentiator constituted by an operational amplifier having input and output terminals, and a first integrator formed by a first capacitor for providing negative feedback to the operational amplifier and a first variable transconductance amplifier; and a second integrator formed by a second capacitor for providing negative feedback to the first integrator, and a second variable transconductance amplifier. A differentiator is provided at each of the input and output portions of the filter, and a third differentiator is provided immediately preceding the output side differentiator. In the case where two or more said polar networks are incorporated, an additional differentiator is provided between the polar networks. The sum of the number of the circuits constituting the differentiators and the number of the polar networks is selected to be even and equal to the order of the filter. The adjacent ones of the circuits are connected in such a manner that leapfrog type negative feedback is effected, and the differentiators except the output side one are constructed in the form of self negative feedback type.
摘要翻译：极地跨越式过滤器包括至少一个极性网络。极性网络包括由具有输入和输出端子的运算放大器构成的微分器和由用于向运算放大器提供负反馈的第一电容器和由第一可变跨导放大器形成的第一积分器; 以及由用于向第一积分器提供负反馈的第二电容器形成的第二积分器和第二可变跨导放大器。在滤波器的每个输入和输出部分设置微分器，并且紧邻输出侧微分器之前提供第三微分器。在并入两个或更多个所述极性网络的情况下，在极性网络之间提供附加的微分器。构成微分器的电路的数量和极性网络的数量之和被选择为均匀且等于滤波器的次序。相邻的电路以跨越式负反馈的方式连接，除输出侧之外的微分器以自负反馈型的形式构成。

3. 发明授权

US5296763A Polar leapfrog filter 失效
标题翻译：极地跨越过滤器
公开(公告)号：US5296763A
公开(公告)日：1994-03-22
申请号：US858010
申请日：1992-03-26
申请人： Hiroshi Tanigawa , Hiroshi Kondo , Isao Fukai , Tsuneo Tohyama
发明人： Hiroshi Tanigawa , Hiroshi Kondo , Isao Fukai , Tsuneo Tohyama
IPC分类号： H03H11/12 , H03H11/04 , H03F3/04
CPC分类号： H03H11/0466 , H03H11/045
摘要： A polar leapfrog filter includes at least one polar network. The polar network comprises a differentiator constituted by an operational amplifier having input and output terminals, and a first integrator formed by a first capacitor for providing negative feedback to the operational amplifier and a first variable transconductance amplifier; and a second integrator formed by a second capacitor for providing negative feedback to the first integrator, and a second variable transconductance amplifier. In the case where two or more said polar networks are incorporated, an integrator is provided between adjacent ones of the polar networks. The total number of all the circuits is selected to be odd and equal to the order of the filter. The adjacent ones of the circuits are connected in such a manner that leapfrog type negative feedback is effected.
摘要翻译：极地跨越式过滤器包括至少一个极性网络。极性网络包括由具有输入和输出端子的运算放大器构成的微分器和由用于向运算放大器提供负反馈的第一电容器和由第一可变跨导放大器形成的第一积分器; 以及由用于向第一积分器提供负反馈的第二电容器形成的第二积分器和第二可变跨导放大器。在并入两个或多个所述极性网络的情况下，在相邻的极性网络之间提供积分器。所有电路的总数被选择为奇数，并且等于滤波器的顺序。相邻的电路以跨越式负反馈的方式连接。

4. 发明授权

US5293086A Polar leapfrog filter 失效
标题翻译：极地跨越过滤器
公开(公告)号：US5293086A
公开(公告)日：1994-03-08
申请号：US858063
申请日：1992-03-26
申请人： Hiroshi Tanigawa , Hiroshi Kondo , Tsuneo Tohyama , Isao Fukai
发明人： Hiroshi Tanigawa , Hiroshi Kondo , Tsuneo Tohyama , Isao Fukai
IPC分类号： H03H11/12 , H03H11/04 , H03F3/64 , H03F1/34
CPC分类号： H03H11/0466 , H03H11/045
摘要： A polar leapfrog filter includes at least one polar network. The polar network comprises a differentiator constituted by an operational amplifier having input and output terminals, and a first integrator formed by a first capacitor for providing negative feedback to the operational amplifier and a first variable transconductance amplifier; and a second integrator formed by a second capacitor for providing negative feedback to the first integrator, and a second variable transconductance amplifier. An integrator is provided at each of the input and output stages, and a third integrator is provided immediately preceding the output side integrator. In the case where two or more said polar networks are incorporated, an additional integrator is provided between the polar networks. The total number of all the circuits is selected to be even and equal to the order of the filter. The adjacent ones of the circuits are connected in such a manner that leapfrog type negative feedback is effected, and only the input side integrator is constructed in the form of self negative feedback type.
摘要翻译：极地跨越式过滤器包括至少一个极性网络。极性网络包括由具有输入和输出端子的运算放大器构成的微分器和由用于向运算放大器提供负反馈的第一电容器和由第一可变跨导放大器形成的第一积分器; 以及由用于向第一积分器提供负反馈的第二电容器形成的第二积分器和第二可变跨导放大器。在每个输入和输出级提供积分器，并且在输出侧积分器之前提供第三积分器。在并入两个或更多个所述极性网络的情况下，在极性网络之间提供附加积分器。所有电路的总数选择为均匀且等于滤波器的顺序。相邻的电路以跨越式负反馈的方式连接，只有输入侧积分器构成自负反馈型的形式。

5. 发明授权

US5182522A Polar leapfrog filter 失效
标题翻译：极地跨越过滤器
公开(公告)号：US5182522A
公开(公告)日：1993-01-26
申请号：US863205
申请日：1992-04-03
申请人： Hiroshi Tanigawa , Hiroshi Kondo , Isao Fukai , Tsuneo Tohyama
发明人： Hiroshi Tanigawa , Hiroshi Kondo , Isao Fukai , Tsuneo Tohyama
IPC分类号： H03H11/12 , H03H11/04
CPC分类号： H03H11/0466 , H03H11/045
摘要： A polar leapfrog filter includes at least one polar network. The polar network comprises a differentiator constituted by an operational amplifier having input and output terminals, and a first integrator formed by a first capacitor for providing negative feedback to the operational amplifier and a first variable transconductance amplifier; and a second integrator formed by a second capacitor for providing negative feedback to the first integrator, and a second variable transconductance amplifier. A differentiator is provided at each of the input and output stages of the filter. In the case where two or more said polar networks are incorporated, an additional differentiator is provided between the polar networks. The total number of all the circuit units constituting the filter is selected to provide odd order and equal order for the filter. The circuit units are connected in such a manner that leapfrog type negative feedback is effected.
摘要翻译：极地跨越式过滤器包括至少一个极性网络。极性网络包括由具有输入和输出端子的运算放大器构成的微分器和由用于向运算放大器提供负反馈的第一电容器和由第一可变跨导放大器形成的第一积分器; 以及由用于向第一积分器提供负反馈的第二电容器形成的第二积分器和第二可变跨导放大器。在滤波器的每个输入和输出级设置微分器。在并入两个或更多个所述极性网络的情况下，在极性网络之间提供附加的微分器。选择构成滤波器的所有电路单元的总数，以为滤波器提供奇数阶和相等的顺序。电路单元以跨越式负反馈的方式连接。

6. 发明授权

US5177382A Active filter circuit 失效
标题翻译：有源滤波电路
公开(公告)号：US5177382A
公开(公告)日：1993-01-05
申请号：US798215
申请日：1991-11-26
申请人： Hiroshi Kondo , Hiroshi Tanigawa , Tsuneo Tohyama , Isao Fukai
发明人： Hiroshi Kondo , Hiroshi Tanigawa , Tsuneo Tohyama , Isao Fukai
IPC分类号： H03H11/04 , H03H11/12
CPC分类号： H03H11/0466
摘要： An active filter circuit comprises a differentiator constituted by an operational amplifier having an input terminal and output terminal, and a first integrator constituted by a first capacitor and a first variable conductance amplifier for providing negative feedback to the operational amplifier and a first variable conductance amplifier; and a second integrator constituted by a second capacitor and a second variable conductance amplifier for providing negative feedback to the first integrator. The active filter circuit is arranged such that a damping pole is set up at a predetermined frequency by adjusting operating currents of the first and second variable conductance amplifiers.
摘要翻译：有源滤波器电路包括由具有输入端和输出端的运算放大器构成的微分器和由第一电容器和第一可变电导放大器构成的第一积分器，用于向运算放大器提供负反馈和第一可变电导放大器; 以及由第二电容器和第二可变电导放大器构成的第二积分器，用于向第一积分器提供负反馈。有源滤波器电路被布置成使得通过调节第一和第二可变电导放大器的工作电流来将阻尼极以预定频率设置。

7. 发明授权

US5216375A Variable time-constant type differentiator 失效
标题翻译：可变时间常数型微分器
公开(公告)号：US5216375A
公开(公告)日：1993-06-01
申请号：US764912
申请日：1991-09-24
申请人： Hiroshi Tanigawa , Hiroshi Kondou , Tsuneo Tohyama , Isao Fukai
发明人： Hiroshi Tanigawa , Hiroshi Kondou , Tsuneo Tohyama , Isao Fukai
IPC分类号： G06G7/18 , H03H11/04 , H03K5/08
CPC分类号： H03K5/088
摘要： A variable time-constant differentiator comprises an operational amplifier t which a signal is inputted through a capacitor; and a variable transconductance amplifier connected between an input terminal to which a signal is applied and an 5 output terminal.
摘要翻译：可变时间微分器包括通过电容器输入信号的运算放大器t; 以及连接在施加信号的输入端子与5输出端子之间的可变跨导放大器。

8. 发明授权

US5302910A FM detector circuit with error voltage applied to phase shifting circuit 失效
标题翻译：具有误差电压的FM检波电路施加到移相电路
公开(公告)号：US5302910A
公开(公告)日：1994-04-12
申请号：US995035
申请日：1992-12-22
申请人： Hiroshi Kondo , Isao Fukai
发明人： Hiroshi Kondo , Isao Fukai
IPC分类号： H03D3/06 , H03D3/00 , H03D3/14 , H03D3/22
CPC分类号： H03D3/22 , H03D2200/0049 , H03D2200/0082 , H03D3/001 , H03D3/14
摘要： In an FM detector circuit, a phase-shifting circuit is constituted by integrating circuits each consisting of a transconductance amplifier and capacitor. The phase-shifting circuit being arranged to cause limiter signal to be phase-shifted by 90 degrees at center frequency. A multiplying circuit is provided which is arranged to be provided with said limiter signal and output of said phase-shifting circuit, thereby effecting phase-detection of said limiter signal. Further, an error amplifier is provided which is supplied with a smoothed version of detection output derived from said multiplying circuit. The arrangement is made such that output of the error amplifier is applied to the transconductance amplifiers constituting said phase-shifting circuit.
摘要翻译：在FM检波电路中，由跨导放大器和电容器组成的积分电路构成移相电路。所述移相电路被布置成使得限幅信号在中心频率相移90度。提供一个乘法电路，其布置成具有所述限幅器信号和所述移相电路的输出，从而进行所述限幅器信号的相位检测。此外，提供了一个误差放大器，其被提供有从所述乘法电路得到的检测输出的平滑版本。使得误差放大器的输出被施加到构成所述移相电路的跨导放大器的布置。

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