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1. 发明申请

US20170302254A1 VOLTAGE CONTROLLED EQUALIZER NETWORK 审中-公开
公开(公告)号：US20170302254A1
公开(公告)日：2017-10-19
申请号：US15131327
申请日：2016-04-18
申请人： MACOM Technology Solutions Holdings, Inc.
发明人： Brian J. McNamara
IPC分类号： H03H11/24 , H03H7/06 , H03H11/04 , H04N5/44
CPC分类号： H03H11/245 , H01P1/22 , H03H7/06 , H03H7/255 , H03H11/04 , H04L25/03878 , H04L25/03885 , H04L27/01 , H04N5/44
摘要： An apparatus includes a radio frequency (RF) input port, an RF output port, a variable attenuation network, a first filter network, a second filter network, and a third filter network. The variable attenuation network may be coupled between the RF input port and the RF output port. Attenuation of the variable attenuation network is controlled by a first control signal and a second control signal. The first filter network may be connected between the RF input port and the RF output port. The second filter network may be connected between the variable attenuation network and a ground potential. The third filter network may be connected between the variable attenuation network and the ground potential. The first, the second, and the third filter networks modify performance of the variable attenuation network to produce a particular tilt of a radio frequency signal passing through the apparatus between the RF input port and the RF output port. The particular tilt is selectable by adjustment of at least one of the first and the second control signals.

2. 发明授权

US06362704B1 Circuit arrangement improving the control characteristics of an attenuator 有权
标题翻译：电路布置改善衰减器的控制特性
公开(公告)号：US06362704B1
公开(公告)日：2002-03-26
申请号：US09413625
申请日：1999-10-06
申请人： Juha Kajava
发明人： Juha Kajava
IPC分类号： H01P122
CPC分类号： H03H7/255 , H03G1/0052
摘要： A method is presented for biasing an attenuator circuit used in high frequency applications. The method can improve the stability of the AGC system, and in some cases also the control accuracy. An attenuator circuit is disclosed which comprises at least two attenuator members (23) connected in series. In connection with the attenuator members (23) in an attenuator circuit according to the invention there are connected a suitable number of biasing members (22) with which the biasing currents of the attenuator members (23) can be controlled to have different magnitudes, so that in an attenuation situation the attenuator members (23) begin to conduct separately, controlled by the AGC circuit.
摘要翻译：提出了一种用于偏置在高频应用中使用的衰减器电路的方法。该方法可以提高AGC系统的稳定性，在某些情况下也可以提高控制精度。公开了一种衰减器电路，其包括串联连接的至少两个衰减器构件（23）。结合根据本发明的衰减器电路中的衰减器构件（23），连接有适当数量的偏置构件（22），衰减器构件（23）的偏置电流可以被控制成具有不同的幅度，因此在衰减情况下，衰减器构件（23）分开开始，由AGC电路控制。

3. 发明授权

US5834988A Frequency compensated PIN diode attenuator 失效
标题翻译：频率补偿PIN二极管衰减器
公开(公告)号：US5834988A
公开(公告)日：1998-11-10
申请号：US815559
申请日：1997-03-12
申请人： Pierre Dobrovolny
发明人： Pierre Dobrovolny
IPC分类号： H03G5/00 , H03F3/195 , H03G1/00 , H03H7/25 , H04N5/44 , H04N5/52 , H03H7/24
CPC分类号： H03F3/195 , H03G1/0058 , H03H7/255 , H04N5/4446 , H04N5/52
摘要： An attenuator for signals in the frequency band of 50 to 800 MHz is subject to a range of AGC signal attenuating potentials. The attenuator includes a first attenuating PIN diode connected in series between an input and an output. The opposite ends of the first PIN diode are AC coupled via second and third impedance matching PIN diodes to an AC ground. The first PIN diode exhibits a frequency dependent slope over the wide signal frequency band and the range of AGC potentials. First and second inductors, in the form of metallic foil strips, are connected between the second and third PIN diodes and the AC ground. The foil strips are positioned in close proximity to each other and arranged such that signal currents flow therein in opposite directions to establish a negative mutual coupling coefficient for compensating for the frequency dependent slope of the first PIN diode.
摘要翻译：用于50MHz至800MHz频带信号的衰减器受AGC范围的AGC信号衰减电位的影响。衰减器包括串联连接在输入和输出之间的第一衰减PIN二极管。第一PIN二极管的相对端通过第二和第三阻抗匹配PIN二极管交流耦合到AC地。第一个PIN二极管在宽信号频带和AGC电位范围内呈现频率相关斜率。以金属箔片形式的第一和第二电感器连接在第二和第三PIN二极管和AC地之间。箔条彼此靠近并且布置成使得信号电流在相反的方向上流动，以建立用于补偿第一PIN二极管的频率相关斜率的负互耦系数。

4. 发明授权

US5204643A Controllable high-frequency attenuator 失效
标题翻译：可控高频衰减器
公开(公告)号：US5204643A
公开(公告)日：1993-04-20
申请号：US817777
申请日：1992-01-08
申请人： Jouni I. Verronen
发明人： Jouni I. Verronen
IPC分类号： H01P1/22 , H01P3/08 , H03H7/25
CPC分类号： H03H7/255
摘要： The present invention decribes a high-frequency attenuator using PIN diodes, which is especially intended as power control means in a radio-telephone transmitter, and in which the input and output impedances remain constant as the attenuation is varied. The attenuator comprises a longitudinal branch between the input and the output port, having PIN diodes (D1, D2) attenuating the RF signal, transverse branches connected with the input and the output port, each comprising a quarter-wavelength transformer (C1, Z1, C2; C4, Z2, C5) viewed from the signal path and a PIN diode (D3, D4). The same control direct current passes via all the diodes. In spite of the variations of the resistance of the PIN diodes, the input and output impedances of the attenuator do not change owing to the quarter-wavelength transformer.
摘要翻译：本发明描述了使用PIN二极管的高频衰减器，其特别用作无线电话机发射机中的功率控制装置，并且其中输入和输出阻抗随衰减变化而保持恒定。该衰减器包括在输入端口和输出端口之间的纵向分支，具有衰减RF信号的PIN二极管（D1，D2），与输入端和输出端口连接的横向分支，每个分支包括四分之一波长变压器（C1，Z1， C2; C4，Z2，C5）和PIN二极管（D3，D4）。相同的控制直流通过所有二极管。尽管PIN二极管的电阻发生变化，但由于四分之一波长的变压器，衰减器的输入和输出阻抗也不会改变。

5. 发明授权

US4942375A Variable attenuation device intended to be inserted between a transmitter circuit and load circuit 失效
标题翻译：可变衰减装置旨在插入发射机电路和负载电路之间
公开(公告)号：US4942375A
公开(公告)日：1990-07-17
申请号：US408455
申请日：1989-09-15
申请人： Gilbert Petitjean , Michel Lebourg , Christian Le Tortorec
发明人： Gilbert Petitjean , Michel Lebourg , Christian Le Tortorec
IPC分类号： H04B1/04 , H03H7/25
CPC分类号： H03H7/255
摘要： A variable attenuation device intended to be inserted between a transmitter circuit having a certain internal impedance and a load circuit; it composed of at least on parallel attenuation branch made up from a variable resistance component (in particular a p-i-n diode) and a bias circuit to vary the resistance of the component as a function of an attenuation control variable. The parallel attenuation branch has a limiting component which is connected in series with the variable resistance component and whose value ensures the matching of the internal impedance of the transmitter circuit.
摘要翻译：一种可变衰减装置，用于插入具有一定内部阻抗的发射机电路和负载电路之间; 至少由可变电阻分量（特别是p-i-n二极管）构成的平行衰减分支和偏置电路组成，以根据衰减控制变量改变分量的电阻。并联衰减分支具有与可变电阻分量串联连接的限制分量，其值确保发射机电路的内部阻抗的匹配。

6. 发明授权

US4739247A Bidirectional RF switch matrix module apparatus 失效
标题翻译：双向射频开关矩阵模块装置
公开(公告)号：US4739247A
公开(公告)日：1988-04-19
申请号：US64953
申请日：1987-06-22
申请人： Michael H. Cisco , Neil E. Gower , Edgar L. Caples
发明人： Michael H. Cisco , Neil E. Gower , Edgar L. Caples
IPC分类号： H03H7/25 , G05B24/02
CPC分类号： H03H7/255
摘要： A controllable switch matrix module is disclosed for bidirectional transmission of signals between multiple ports in a single module, where the attenuation characteristics are dynamically alterable. The invention uses pin diodes both for isolation and for switching, and achieves its high isolation in part by completely enclosing each of the attenuation functions within separate compartments, enclosing the connections between compartments for isolation between functions, and supplying control signals to the pin diodes using feedthrough connections designed in such a way as to prevent the emission of RF signals via the feedthrough devices. Only two bits are required to define any one of four attenuation levels between any two ports.
摘要翻译：公开了一种用于在单个模块中的多个端口之间的信号的双向传输的可控开关矩阵模块，其中衰减特性是动态可变的。本发明使用pin二极管用于隔离和开关，并且部分地通过完全将每个衰减功能包围在单独的隔间内来实现其高隔离，包围隔间之间的连接以隔离功能，并且使用馈通连接设计成防止通过馈通装置发射RF信号。需要两位才能定义任何两个端口之间的四个衰减电平中的任何一个。

7. 发明授权

US4668882A Radio frequency signal variable attenuation circuit 失效
标题翻译：射频信号可变衰减电路
公开(公告)号：US4668882A
公开(公告)日：1987-05-26
申请号：US741596
申请日：1985-06-05
申请人： Syuuji Matsuura
发明人： Syuuji Matsuura
IPC分类号： H03H7/25 , H04B1/18 , H03K5/08
CPC分类号： H03H7/255
摘要： An RF signal variable attenuation circuit is disclosed having an input terminal for inputting RF signals, an output terminal for outputing attenuated signals, a transmission line connected between the input terminal and the output terminal, first and second PIN diodes inserted in the transmission line in series, a power supply source for supplying a voltage to the first and second PIN diodes, and a control circuit for controlling the conduction of the first and second PIN diodes according to the voltage supplied from the power supply source.
摘要翻译：公开了一种RF信号可变衰减电路，其具有用于输入RF信号的输入端子，用于输出衰减信号的输出端子，连接在输入端子和输出端子之间的传输线，串联连接在传输线中的第一和第二PIN二极管用于向第一和第二PIN二极管提供电压的电源，以及用于根据从电源提供的电压来控制第一和第二PIN二极管的导通的控制电路。

8. 发明授权

US4567446A Light-receiving device for optical data transfer system 失效
标题翻译：用于光学数据传输系统的光接收装置
公开(公告)号：US4567446A
公开(公告)日：1986-01-28
申请号：US535629
申请日：1983-09-26
申请人： Kuniyoshi Konishi
发明人： Kuniyoshi Konishi
IPC分类号： H04B10/60 , H03H7/25 , H04B10/40 , H04B10/50 , H04B10/69 , H03F17/00
CPC分类号： H03H7/255 , H04B10/6973
摘要： A light-receiving device including a photo-detector, for issuing a current signal corresponding to a received light signal, preamplifier, variable attenuating circuit and main amplifier. The preamplifier acts as a current amplifier for amplifying an output current signal from the photo-detector. The variable attenuating circuit acts as a current attenuating circuit for attenuating an output current signal from the preamplifier. The main amplifier amplifies an output current from the variable attenuating circuit and issues an amplified voltage.
摘要翻译：一种光接收装置，包括光检测器，用于发出对应于接收的光信号的电流信号，前置放大器，可变衰减电路和主放大器。前置放大器用作用于放大来自光电检测器的输出电流信号的电流放大器。可变衰减电路用作用于衰减来自前置放大器的输出电流信号的电流衰减电路。主放大器放大来自可变衰减电路的输出电流并发出放大的电压。

9. 发明授权

US4249144A Controllable microwave attenuator 失效
标题翻译：可控微波衰减器
公开(公告)号：US4249144A
公开(公告)日：1981-02-03
申请号：US100002
申请日：1979-12-04
申请人： Geoffrey J. Hurst , Andrew W. Butler
发明人： Geoffrey J. Hurst , Andrew W. Butler
IPC分类号： H03H7/25
CPC分类号： H03H7/255
摘要： A microwave attenuator consists of a plurality of variable attenuation PIN diodes connected in a serial path. At least one of the diodes forms part of a feed-back loop so that the attenuation level it provides can be adjusted to correspond with a reference signal. The effective level of the reference signal is modified in accordance with correction factors, by means of which non-linearities in the performance of the remaining diodes can be compensated.
摘要翻译：微波衰减器由连接在串行路径中的多个可变衰减PIN二极管组成。至少一个二极管构成反馈回路的一部分，使得其提供的衰减电平可以被调整为与参考信号相对应。参考信号的有效电平根据校正因子进行修改，由此可以补偿剩余二极管的性能中的非线性。

10. 发明授权

US4224583A Linear rf attenuator 失效
标题翻译：线性rf衰减器
公开(公告)号：US4224583A
公开(公告)日：1980-09-23
申请号：US964559
申请日：1978-11-29
申请人： Stephen J. Larkin
发明人： Stephen J. Larkin
IPC分类号： H03H7/25 , H03H7/24
CPC分类号： H03H7/255
摘要： A linear attenuator using a dc control current to change the rf resistance of PIN diodes in series and parallel with the load. As the control current changes, the rf resistance of the series diode varies inversely and the parallel diode varies directly providing attenuation which changes linearly as a function of the control current through the series diode.
摘要翻译：线性衰减器使用直流控制电流来改变串联二极管串联并与负载平行的rf电阻。随着控制电流的变化，串联二极管的rf电阻反向变化，并联二极管直接变化，提供随着通过串联二极管的控制电流的函数而线性变化的衰减。

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