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公开(公告)号：US4095197A
公开(公告)日：1978-06-13
申请号：US765331
申请日：1977-02-03
申请人： Gerard Le Coz , Jean-Noel Marchalot
发明人： Gerard Le Coz , Jean-Noel Marchalot
CPC分类号： H01P9/003
摘要： The input wave guides are oriented towards a perpendicular output wave gu with a semi-reflecting quarter-wave plane reflector disposed at 45.degree. to two progressive reflectors which cause increasing delay with frequency and which are disposed in the line of the input and output wave guides.
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公开(公告)号：US4042893A
公开(公告)日：1977-08-16
申请号：US242751
申请日：1972-04-10
申请人： Ernst Hofer , Max Schlichte
发明人： Ernst Hofer , Max Schlichte
摘要： A technique of reducing "crosstalk" in transmission lines for time multiplex pulse communication, by insertion of artificial compensating networks having an impedance varying with frequency in opposite sense as compared with the natural impedance of the line. The values of the elements of the network are determined by transmitting a pulse over the line and determining the distortion to that pulse.
摘要翻译： 通过插入与线路的自然阻抗相比具有与频率相反的阻抗变化的人造补偿网络来减少用于时间复用脉冲通信的传输线中的“串扰”的技术。 通过在线路上发送脉冲并确定该脉冲的失真来确定网络的元件的值。
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公开(公告)号：US4004253A
公开(公告)日：1977-01-18
申请号：US587894
申请日：1975-06-18
摘要： An inductorless variable equalizer comprises input and output terminals. A first transmission network is situated in the forward path between the input and output terminals and has a variable transfer coefficient; second and third transmission networks are situated in the feedback and feedforward paths, respectively, between the input and output terminals. Each of these networks has a fixed transfer coefficient and the transfer coefficients of the feedback and feedforward networks having polarities opposite each other.
摘要翻译： 无电感可变均衡器包括输入和输出端子。 第一传输网络位于输入和输出端之间的前向路径中，具有可变传输系数; 第二和第三传输网络分别位于输入和输出端之间的反馈和前馈路径中。 这些网络中的每一个具有固定的传输系数和具有彼此相反的极性的反馈和前馈网络的传输系数。
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公开(公告)号：US3967220A
公开(公告)日：1976-06-29
申请号：US600682
申请日：1975-07-31
摘要： A variable delay equalizer comprises two directional couplers, each having a pair of input terminals and a pair of output terminals. A pair of variable phase shifters are inserted respectively between the output terminals of the first coupler and the input terminals of the second coupler. A third variable phase shifter is connected between the second output terminal of the second coupler and the second input terminal of the first coupler. This equalizer makes it possible to shift the peak delay frequency as well as to change the value of the peak delay itself.
摘要翻译： 可变延迟均衡器包括两个定向耦合器，每个具有一对输入端子和一对输出端子。 一对可变移相器分别插入在第一耦合器的输出端和第二耦合器的输入端之间。 第三可变移相器连接在第二耦合器的第二输出端和第一耦合器的第二输入端之间。 该均衡器使得可以移位峰值延迟频率以及改变峰值延迟本身的值。
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公开(公告)号：US3904992A
公开(公告)日：1975-09-09
申请号：US44090374
申请日：1974-02-08
申请人： NIPPON ELECTRIC CO
发明人： IWAKAMI TAKUYA
IPC分类号： H01P1/00 , H03H7/01 , H03H11/04 , H03H11/12 , H04B3/40 , H03H7/10 , H03H7/14 , H03H7/30 , H04B3/04
CPC分类号： H03H11/1204
摘要： A two-port network for use in transmission line equalizers in repeatered wide-band communication systems is disclosed. The network includes a single one-port uniformly-distributed RC network connected between corresponding terminals of the input and output ports. A capacitance element is connected between the terminals of the output port. The two-port network is adapted to integrated circuit construction and may be cascaded through buffer amplifiers. Alternatively, the two-port network may form a part of a feedback equalizer. In one embodiment, the capacitance element is a variable-capacitance diode controlled by a peak detector. In another embodiment, the two-port network is used as the feedback circuit.
摘要翻译： 公开了一种用于重复宽带通信系统中的传输线均衡器的双端口网络。 该网络包括连接在输入和输出端口的相应终端之间的单个单端口均匀分布的RC网络。 电容元件连接在输出端口的端子之间。 双端口网络适用于集成电路结构，可通过缓冲放大器级联。 或者，双端口网络可以形成反馈均衡器的一部分。 在一个实施例中，电容元件是由峰值检测器控制的可变电容二极管。 在另一个实施例中，双端口网络用作反馈电路。
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公开(公告)号：US3895304A
公开(公告)日：1975-07-15
申请号：US45286374
申请日：1974-03-20
发明人： KLEIN GERALD I
摘要： A recursive microwave notch filter wherein each section is comprised of a pair of power dividers e.g. 3-db couplers joined by a short and a long microwave transmission line. Tuning of the frequency rejection notch is achieved by inserting an electrically controlled phase shifter having 360* of adjustment in the short transmission line. Two identical cascaded sections of the subject notch filter are required for coupling to the input of a saturated RF power amplifier, such as the output amplifier of an amplifier chain utilized in present day radar transmitters, in order to obtain the desired frequency rejection notch, due to the gain compression characteristic present in an amplifier when driven into its saturation region.
摘要翻译： 一种递归微波陷波滤波器，其中每个部分由一对功率分配器组成。 3-db耦合器通过短而长的微波传输线连接。 通过在短传输线路中插入具有360度调节的电控移相器来实现频率抑制陷波的调谐。 需要主题陷波滤波器的两个相同的级联部分来耦合到饱和RF功率放大器的输入端，例如在当今的雷达发射机中使用的放大器链的输出放大器，以便获得期望的频率抑制陷波 与驱动到其饱和区域中的放大器中存在的增益压缩特性。
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公开(公告)号：US3883830A
公开(公告)日：1975-05-13
申请号：US46970774
申请日：1974-05-13
发明人： HEKIMIAN NORRIS C
CPC分类号： H04B3/14 , H03H11/1217
摘要： A line conditioner includes plural amplitude and delay equalization circuits which are both physically and functionally independent, whereby both gain and delay in a transmission system can be adjusted with negligible mutual interaction. All adjustment potentiometers are part of a common front panel module which, once adjusted, can be transferred to a replacement system without requiring further adjustment. A novel input amplifier circuit provides good noise figure control and permits wideband linear gain (db) adjustment as a function of potentiometer rotation. Each delay equalization section employs an economical active gyrator circuit as part of a band pass filter having unity gain across the frequency band. Each amplitude equalization circuit likewise includes an economical active gyrator and a gain control potentiometer arranged such that the product of the circuit gain and bandwidth remains substantially constant as the potentiometer is adjusted.
摘要翻译： 线路调理器包括在物理和功能上独立的多个幅度和延迟均衡电路，由此可以以可忽略的相互作用来调节传输系统中的增益和延迟。 所有调节电位器都是常用的前面板模块的一部分，一旦调整，可以将其转移到更换系统，而无需进一步调整。 一个新颖的输入放大器电路提供了良好的噪声系数控制，并允许宽带线性增益（db）调整作为电位器旋转的函数。 每个延迟均衡部分采用经济的有源回转器电路作为在频带上具有单位增益的带通滤波器的一部分。 每个幅度均衡电路同样包括一个经济的有效回转器和一个增益控制电位器，它被布置为使电路增益和带宽的乘积在调节电位器时保持基本恒定。
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公开(公告)号：US3866151A
公开(公告)日：1975-02-11
申请号：US34079473
申请日：1973-03-13
申请人： NIPPON ELECTRIC CO
发明人： TAJIMA MUTSUNARI , KOMATSU ISAO
CPC分类号： H04B3/10
摘要： An improved specific frequency signal detecting circuit useful, for example, in a telephone channel includes a bandpass circuit and a band-rejection circuit, the difference in the detected outputs of which is compared with a threshold reference voltage. Detection of the specific frequency signal occurs when the difference voltage exceeds the reference voltage. The bandpass circuit includes an amplitude limiter to prevent malfunctioning or false detecting when formant components are present in the specific frequency signal band.
摘要翻译： 例如在电话信道中有用的改进的特定频率信号检测电路包括带通电路和带阻电路，其检测输出的差与阈值参考电压进行比较。 当差值电压超过参考电压时，会发生特定频率信号的检测。 带通电路包括限幅器，以防止在特定频率信号频带中存在共振峰分量时的故障或错误检测。
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公开(公告)号：US3800265A
公开(公告)日：1974-03-26
申请号：US25451772
申请日：1972-05-18
申请人： NIPPON ELECTRIC CO
发明人： YOSHIOKA T , AKIYAMA S
CPC分类号： H03H11/18
摘要： An improved active type group-delay equalizer having the transfer function
摘要翻译： 具有传递函数N =（AZb + AZa + B / CZb-DZa + E）的改进的有源类型组延迟均衡器，其中A，B和D对于给定的AZa和Zb是Z1和Z2的函数，使得N =常数 。 通过选择Za和Zb都具有反应分量来实现幅度失真的附加减小。
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公开(公告)号：US3794936A
公开(公告)日：1974-02-26
申请号：US3794936D
申请日：1972-12-11
申请人： POSCHENRIEDER W , BUECHERL E
发明人： POSCHENRIEDER W , BUECHERL E
CPC分类号： H04J1/08 , H03H7/0115 , H03H7/1758 , H03H7/1766 , H03H7/19 , H04J1/045
摘要： A dividing filter network wherein two port circuits, such as transformers, reactance circuits, equalizers and amplifiers, are interconnected in each branch of a mirror-image arrangement, the two-port circuits being designed and constructed in such a way that the frequency characteristics of the entire network agrees with the predetermined frequency characteristics of the interconnected two-port circuits, except for an additional phase.
摘要翻译： 分频滤波器网络，其中诸如变压器，电抗电路，均衡器和放大器之类的两个端口电路在镜像装置的每个分支中互连，所述双端口电路被设计和构造成使得两端口电路的频率特性 整个网络与互连的两端口电路的预定频率特性一致，除了附加相位。
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