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公开(公告)号：US06597900B1
公开(公告)日：2003-07-22
申请号：US09557604
申请日：2000-04-25
IPC分类号： H04B126
摘要： A circuit arrangement for providing impedance translation filtering comprises a first path and a second path. In a base band variant the first path is a feed forward path which comprises first and second series connected transconductance gain stages (10, 12), and the second path is a feedback which comprises third and fourth transconductance gain stages (18, 20), each having an inverting output. An output of the first gain stage is coupled to an input of the fourth gain stage. In operation, the impedance presented at its output determines the impedance presented at an input of the circuit arrangement.
摘要翻译： 用于提供阻抗转换滤波的电路装置包括第一路径和第二路径。 在基带变型中，第一路径是前馈路径，其包括第一和第二串联连接的跨导增益级（10,12），并且第二路径是包括第三和第四跨导增益级（18,20）的反馈， 每个都具有反相输出。 第一增益级的输出耦合到第四增益级的输入端。 在操作中，其输出处呈现的阻抗确定了在电路装置的输入处呈现的阻抗。
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公开(公告)号：US5131028A
公开(公告)日：1992-07-14
申请号：US467378
申请日：1990-01-18
申请人： Charles W. Chambers
发明人： Charles W. Chambers
摘要： A reciprocal impedance conversion network is disclosed. Such conversion network preferably is used in a reciprocal negative impedance repeater for the nonloaded cable facilities of a telephone system. Two independent voltage sources for generating reciprocal negative impedance are connected between a first port and a second port. The first port is operably connected to the first voltage source such that a series negative impedance appears at that port. This port is specifically connected to the switching equipment of the telephone system. The second port is operably connected to the second voltage source such that a shunt negative impedance appears at that port. The second port is specifically connected to the nonloaded cable facilities of the telephone system. The invention further provides a frequency dependent gain circuit which is useful for equalizing the losses along the nonloaded cable facilities. In addition, the invention provides an unconditional stability test for the reciprocal negative impedance repeater which may be performed substantially without test equipment.
摘要翻译： 公开了一种互逆阻抗转换网络。 这种转换网络优选用于电话系统的无负载电缆设施的互逆负阻抗中继器。 用于产生相互负阻抗的两个独立电压源连接在第一端口和第二端口之间。 第一端口可操作地连接到第一电压源，使得在该端口处出现串联的负阻抗。 该端口专门连接到电话系统的交换设备。 第二端口可操作地连接到第二电压源，使得在该端口处出现并联负阻抗。 第二个端口专门连接到电话系统的无负载的有线设施。 本发明还提供了一种频率相关增益电路，其对沿着无负载的电缆设施的损耗进行均衡是有用的。 此外，本发明提供了一种可逆的负阻抗中继器的无条件稳定性测试，其可以在没有测试设备的情况下进行。
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公开(公告)号：US20180248534A1
公开(公告)日：2018-08-30
申请号：US15746867
申请日：2016-02-15
发明人： Itsuo Yuzurihara , Satoshi Aikawa , Sadao Mori , Tadaharu Ohno
CPC分类号： H03H7/38 , H01F21/08 , H01F27/38 , H01F29/14 , H01F2029/143 , H03H1/00 , H03H7/40 , H03H11/40 , H03H2001/0057
摘要： An impedance matching device comprising a variable reactor having a main winding and control winding, wherein a generated magnet field in the core is an AC magnetic field with a magnitude exceeding a value to settle a deviation between a control target value for impedance matching and a feedback value, by changing the magnitude of the generated magnetic field by changing a control current passing through the control winding, thereby controlling inductance of the variable rector to be a predetermined value to perform impedance matching, the response delay in the impedance matching is reduced by reducing a response delay in the inductance variation of the variable reactor.
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公开(公告)号：US09166573B2
公开(公告)日：2015-10-20
申请号：US14146945
申请日：2014-01-03
发明人： Yutaka Yoshizawa
摘要： According to an aspect of the present invention, in a semiconductor device, a plurality of commands for specifying a circuit configuration of an analog front-end unit are transmitted from a processing unit to the analog front-end unit, an analysis is performed on the plurality of commands received by the analog front-end unit, and when a circuit configuration of the analog front-end unit which is to be updated and is determined according to the plurality of commands includes a forbidden condition that has been previously set, updating processing of the circuit configuration according to the plurality of commands is stopped.
摘要翻译： 根据本发明的一个方面，在半导体装置中，从处理单元向模拟前端单元发送用于指定模拟前端单元的电路配置的多个命令，对 由模拟前端单元接收的多个命令，以及当要被更新并根据多个命令确定的模拟前端单元的电路配置包括预先设置的禁止条件时，更新处理 根据多个命令的电路配置被停止。
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7.发明申请APPARATUS AND METHOD FOR MATCHING IMPEDANCE USING STANDING WAVE RATIO INFORMATION 有权使用标准波比信息匹配阻抗的装置和方法公开(公告)号：US20120026063A1
公开(公告)日：2012-02-02
申请号：US13180833
申请日：2011-07-12
申请人： Sang Hun LEE , Sang Bae CHO , Dong Chan PARK , Chang Wook KIM , Ju Young SONG
发明人： Sang Hun LEE , Sang Bae CHO , Dong Chan PARK , Chang Wook KIM , Ju Young SONG
IPC分类号： H01Q1/50
CPC分类号： H03H7/40 , H03H11/40 , H04B1/0458
摘要： An apparatus and method for matching impedance of an antenna by using Standing Wave Ratio (SWR) information is provided. While the impedance of the impedance matching unit is controlled, a region of a Smith chart in which initial total impedance of the impedance matching unit and the antenna is located by using an SWR calculated by an SWR operation unit, and the impedance of the impedance matching unit is controlled according to the determined region, thus correctly matching the impedance of the antenna.
摘要翻译： 提供了通过使用驻波比（SWR）信息来匹配天线的阻抗的装置和方法。 在阻抗匹配单元的阻抗被控制的情况下，通过使用由SWR运算单元计算的SWR和阻抗匹配单元和天线的阻抗匹配的阻抗匹配单元和天线的初始总阻抗的史密斯圆图的区域 单位根据确定的区域进行控制，从而正确匹配天线的阻抗。
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公开(公告)号：US20070009051A1
公开(公告)日：2007-01-11
申请号：US11474051
申请日：2006-06-22
申请人： Davide Maschera , Daniele Dario
发明人： Davide Maschera , Daniele Dario
CPC分类号： H03H11/40 , H04L27/2601
摘要： An arrangement includes a transformer having a primary winding and a secondary winding, the transformer exhibiting an impedance across the primary winding, and an impedance synthesis circuit. The impedance synthesis circuit includes a transfer function element having a frequency spectrum. The transfer function element has associated a gain element and a current source controlled by the transfer function element. The impedance synthesis circuit is connected to said secondary winding, so that the transformer mirrors the impedance synthesized by the impedance synthesis circuit into the impedance across said primary winding. The primary winding is adapted to define the high voltage side of an XDSL splitter, while the impedance synthesis circuit connected to the secondary winding is inherently a low voltage circuit.
摘要翻译： 一种布置包括具有初级绕组和次级绕组的变压器，变压器在初级绕组上呈现出阻抗，以及阻抗合成电路。 阻抗合成电路包括具有频谱的传递函数元件。 传递函数元素将增益元素和由传递函数元素控制的电流源相关联。 阻抗合成电路连接到所述次级绕组，使得变压器将由阻抗合成电路合成的阻抗镜像成跨过所述初级绕组的阻抗。 初级绕组适合于定义XDSL分离器的高压侧，而连接到次级绕组的阻抗合成电路固有地是低电压电路。
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公开(公告)号：US20070007947A1
公开(公告)日：2007-01-11
申请号：US11441689
申请日：2006-05-26
申请人： Atsushi Hirabayashi , Kenji Komori
发明人： Atsushi Hirabayashi , Kenji Komori
IPC分类号： G01R31/28
CPC分类号： H03H11/40
摘要： An impedance conversion circuit including: a first voltage-to-current converter and a second voltage-to-current converter supplied with differential input signal voltages; an inverting amplifier; and a third voltage-to-current converter for feedback; wherein a first resistance and a second resistance are connected in series with each other between an input terminal and an output terminal of the inverting amplifier, an output terminal of the first voltage-to-current converter is connected to the input terminal of the inverting amplifier, an output terminal of the second voltage-to-current converter is connected to a connection node of the first resistance and the second resistance, the output terminal of the inverting amplifier is connected to an input terminal of the third voltage-to-current converter, an output terminal of the third voltage-to-current converter is connected to an input terminal of the first voltage-to-current converter, and an impedance is connected between the connection node and a ground.
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公开(公告)号：US07142833B2
公开(公告)日：2006-11-28
申请号：US10705863
申请日：2003-11-13
申请人： Yasuhiro Hibino , Ryuichi Kamimoto , Akira Ito
发明人： Yasuhiro Hibino , Ryuichi Kamimoto , Akira Ito
CPC分类号： H03F1/565 , H03F2200/111 , H03F2200/252 , H03H7/38 , H03H11/40 , H04B1/005 , H04B1/006 , H04B1/18
摘要： A matching unit includes a switching means for switching an inductance of a first inductor. This switching means sets an inductance such that a first inductor shows an inductance property to both of the VHF low-band and high-band, and shows a capacitance property to the UHF band. This structure allows the matching unit to achieve the matching for both the VHF low-band and high-band by just switching the two circuits of the VHF low-band and high-band, also allows the matching unit to show a capacitance property to the UHF band. Thus the loss produced in transmitting signals can be reduced, and the circuit can be simplified. As a result, the matching unit can be downsized, and the cost can be reduced.
摘要翻译： 匹配单元包括用于切换第一电感器的电感的开关装置。 该开关装置设定电感，使得第一电感器对VHF低频带和高频带都显示出电感特性，并且显示出对UHF频带的电容性质。 这种结构允许匹配单元通过仅切换VHF低频带和高频带的两个电路来实现VHF低频带和高频带两者的匹配，还允许匹配单元显示出对于 UHF频带。 因此，可以减少在发送信号中产生的损耗，并且可以简化电路。 结果，可以缩小匹配单元，并且可以降低成本。
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