公开(公告)号：US08680937B2

公开(公告)日：2014-03-25

申请号：US12948447

申请日：2010-11-17

申请人： Yi-Cheng Chang

发明人： Yi-Cheng Chang

IPC分类号： H04B3/14 ,  H04L25/03

CPC分类号： H03H7/40 ,  H04B3/04 ,  H04L25/03031 ,  H04L2025/03477

摘要： An embodiment of an equalizer includes a voltage-to-current converter and a current-to-voltage converter. The voltage-to-current converter is configured to convert a differential input voltage to a differential current, and includes a differential amplifier with a first transistor and a second transistor, and a first source degeneration circuit coupled between the first transistor and the second transistor. An embodiment of the first source degeneration circuit includes a first resonant circuit. The current-to-voltage converter is coupled to the voltage-to-current converter, and is configured to convert the differential current to a differential output voltage. The current-to-voltage converter includes a first inverter with a first feedback circuit and a second inverter coupled to the first inverter, which includes a second feedback circuit. An embodiment of the first feedback circuit includes a second resonant circuit, and an embodiment of the second feedback circuit includes a third resonant circuit.

摘要翻译： 均衡器的实施例包括电压 - 电流转换器和电流 - 电压转换器。 电压 - 电流转换器被配置为将差分输入电压转换成差分电流，并且包括具有第一晶体管和第二晶体管的差分放大器以及耦合在第一晶体管和第二晶体管之间的第一源极退化电路。 第一源极退化电路的实施例包括第一谐振电路。 电流 - 电压转换器耦合到电压 - 电流转换器，并且被配置为将差分电流转换成差分输出电压。 电流 - 电压转换器包括具有第一反馈电路的第一反相器和耦合到第一反相器的第二反相器，其包括第二反馈电路。 第一反馈电路的实施例包括第二谐振电路，第二反馈电路的实施例包括第三谐振电路。

公开(公告)号：US20140072025A1

公开(公告)日：2014-03-13

申请号：US13968869

申请日：2013-08-16

申请人： Renesas Electronics Corporation

发明人： Masaharu Matsudaira ,  Koichi Yamaguchi ,  Kenichiro Hijioka

IPC分类号： H04L27/01

CPC分类号： H04L25/03031 ,  H04B5/0075 ,  H04L5/0075 ,  H04L7/0041 ,  H04L7/0091 ,  H04L25/03127 ,  H04L27/01

摘要： A transmission apparatus includes a transmission equalizer that equalizes a transmission signal transmitted in a signal transmission performed via a non-contact coupling including a magnetic coupling of a pair of coupling elements. The transmission equalizer creates plural equivalent transmission signals by branching the transmission signal; and includes plural signal paths that respectively give time delays different from each other to the equivalent transmission signals, and respectively multiplies the delayed transmission signals by tap coefficients. In addition, at least one pair of signal paths is set includes a variable delay circuit that can change the corresponding time delay to be given to the corresponding transmission signal.

摘要翻译： 传输装置包括：传输均衡器，其对通过包括一对耦合元件的磁耦合的非接触耦合进行的信号传输中传输的传输信号进行均衡。 发送均衡器通过分支发送信号来创建多个等效发送信号; 并且包括分别给予等效传输信号彼此不同的时间延迟的多个信号路径，并且分别通过抽头系数乘以延迟的传输信号。 此外，设置至少一对信号路径包括可以改变对相应发送信号给出的相应时间延迟的可变延迟电路。

公开(公告)号：US08073399B2

公开(公告)日：2011-12-06

申请号：US12490065

申请日：2009-06-23

申请人： Timothy P. Sullivan

发明人： Timothy P. Sullivan

IPC分类号： H04B1/44 ,  H04K3/00

CPC分类号： H04B7/0848 ,  H04L25/03031

摘要： An apparatus and method for signal optimization is disclosed. This disclosure relates to improved device and method for improving performance and reducing cosite interference for an antenna array. More particularly, this description relates to a device and method for equalizing signals for communication receivers, and more particularly, to a device and method for matrixed adaptive equalizing configured to a plurality of antennas for receiving one or more signals each designated for one of a plurality of receivers.

摘要翻译： 公开了一种用于信号优化的装置和方法。 本公开涉及用于改善天线阵列的性能和降低相干干扰的改进的装置和方法。 更具体地，本说明书涉及用于对通信接收机的信号进行均衡的装置和方法，更具体地，涉及一种用于矩阵化自适应均衡的装置和方法，其被配置为多个天线，用于接收每个指定给多个天线中的一个的一个或多个信号 的接收器。

公开(公告)号：US20050281364A1

公开(公告)日：2005-12-22

申请号：US10872108

申请日：2004-06-17

申请人： Shanthi Pavan

发明人： Shanthi Pavan

IPC分类号： H03B1/00 ,  H03K5/00 ,  H04B1/10 ,  H04L25/03

CPC分类号： H04L25/03031 ,  H04L25/03038 ,  H04L2025/03356 ,  H04L2025/03617

摘要： Methods, apparatuses, and systems are presented for performing channel equalization comprising receiving a signal from a channel associated with inter-symbol interference, processing the received signal to effectively apply a plurality of linearly independent impulse responses to the received signal to produce a plurality of intermediate signals, scaling each of the intermediate signals by each of a plurality of multiplier factors to produce a plurality of scaled signals, and combining the scaled signals to produce a resulting signal corresponding to an equalized version of the received signal in order to reduce effects of inter-symbol interference. Processing of the received signal may comprise providing the received signal to an LCR network comprising a plurality of inductors and a plurality of capacitors and generating, as the intermediate signals, a plurality of inductor signals representing currents through the plurality of inductors and a plurality of capacitor signals representing voltages across the plurality of capacitors.

摘要翻译： 呈现用于执行信道均衡的方法，装置和系统，包括从与码元间干扰相关联的信道接收信号，处理接收信号以有效地对接收信号应用多个线性独立的脉冲响应，以产生多个中间 信号，通过多个乘数因子中的每一个来缩放每个中间信号以产生多个缩放信号，并且组合缩放的信号以产生对应于所接收信号的均衡版本的结果信号，以便减少接收信号的影响 符号干扰 接收信号的处理可以包括将接收到的信号提供给包括多个电感器和多个电容器的LCR网络，并且产生表示通过多个电感器的电流的多个电感器信号和多个电容器，作为中间信号， 表示多个电容器两端的电压的信号。

公开(公告)号：USRE27047E

公开(公告)日：1971-02-02

申请号：US27047D

申请日：1969-09-08

IPC分类号： H04L25/03

CPC分类号： H04L25/03031

摘要： AN ADAPTIVE TRANSVERSAL EQUALIZER SYSTEM FOR MULTILEVEL DIGITAL DATA IN WHICH ATTENUATORS CONNECTED TO EQUALLY SPACED TAPS THEREALONG ARE INCREMENTALLY ADJUSTED ACCORDING TO A CORRELATION OF THE POLARITY OF EACH RECEIVED DATA SYMBOL WITH AN ERROR POLARITY COMPONENT TO MINIMIZE INTERSYMBOL INTERFERENCE. THE ERROR POLARITY COMPONENT IS OBTAINED FROM THE DIFFERENCE BETWEEN THE ACTUAL

LEVEL OF EACH RECEIVED SIGNAL SAMPLE AND THE NORMALIZED DIGITAL ENCODING LEVEL ASSIGNED THERETO. FOR SMOOTHING PURPOSES CORRELATION RESULTS ARE AVERAGED IN REVERSIBLE DIGITAL COUNTERS AND TAPE ATTENUATORS ARE ADJUSTED ONLY UPON OVERFLOW OF SUCH COUNTERS.

公开(公告)号：US20180262374A1

公开(公告)日：2018-09-13

申请号：US15453774

申请日：2017-03-08

申请人： CREDO TECHNOLOGY GROUP LIMITED

发明人： Lawrence Chi Fung Cheng ,  Haihui Luo

IPC分类号： H04L27/01 ,  H03F3/19 ,  H03F3/45 ,  H03G3/30

CPC分类号： H04L27/01 ,  H03F3/193 ,  H03F3/211 ,  H03F3/45201 ,  H03F2200/451 ,  H03F2203/45361 ,  H03G5/28 ,  H03H11/26 ,  H03H15/02 ,  H04L25/03031 ,  H04L25/03044 ,  H04L25/03878

摘要： High-data rate channel interface modules and equalization methods employing a finite impulse response (FIR) analog receive filter. Embodiments include an illustrative channel interface module having multiple amplifier-based delay units arranged in a sequential chain to convert an analog input signal into a set of increasingly-delayed analog signals that are weighted and combined together with the analog input signal to form an equalized signal; and a symbol decision element operating on the equalized signal to obtain a sequence of symbol decisions. An interface that extracts received data from the sequence of symbol decisions. The delay units may employ one or more delay cells each having a common-source amplifier stage followed by a source follower output stage, the two stages providing approximately equal portions of the propagation delay. An enhanced gate-to-drain capacitance in the common-source amplifier may increase propagation delay while reducing bandwidth limitations.

公开(公告)号：US20170195146A1

公开(公告)日：2017-07-06

申请号：US14985767

申请日：2015-12-31

申请人： Infineon Technologies AG

发明人： Jake Greene ,  Valentyn Solomko

IPC分类号： H04L25/03 ,  H04L25/02

CPC分类号： H04L25/03878 ,  H01P5/185 ,  H04B3/145 ,  H04L25/0272 ,  H04L25/03031

摘要： In accordance with an embodiment, a device includes a directional coupler having an input port, a transmitted port, a coupled port and an isolated port. The device also includes a first passive equalizer having a first terminal coupled to a first one of a coupled port and an isolated port of the directional coupler. The first passive equalizer includes a resonator having a first inductor and a first capacitor, the resonator coupled between the first terminal and a second terminal of the first passive equalizer. The first passive equalizer also includes a first resistor and a second resistor serially connected between the first and the second terminals of the first passive equalizer, the first resistor connected to the second resistor at a first node. The first equalizer further includes a shunt network coupled between a reference terminal and the first node.

公开(公告)号：US20170070368A1

公开(公告)日：2017-03-09

申请号：US15220068

申请日：2016-07-26

申请人： Abtum Inc.

发明人： Sam Mandegaran

IPC分类号： H04L25/03 ,  H01Q1/24 ,  H01Q9/04 ,  H01Q15/14

CPC分类号： H04L25/03019 ,  H01Q1/243 ,  H01Q9/0442 ,  H01Q15/14 ,  H03F3/24 ,  H04B2001/0408 ,  H04L25/0278 ,  H04L25/03031

摘要： The disclosure provides circuitry and methods to determine the reflection coefficient of a transmission line connected another physical element or device such as an antenna. The outgoing and the reflected signals on the transmission line are compared using two separate paths, with one path going through a signal conditioning circuitry such as an equalizer. The two paths are then combined and detected. A lookup table may be used for non-linear responses.

摘要翻译： 本公开提供了确定连接另一个物理元件或设备（例如天线）的传输线的反射系数的电路和方法。 使用两条单​​独的路径比较传输线路上的输出和反射信号，其中一条路径经过诸如均衡器的信号调理电路。 然后组合并检测两条路径。 查找表可用于非线性响应。

公开(公告)号：US20160380785A1

公开(公告)日：2016-12-29

申请号：US15193203

申请日：2016-06-27

申请人： Samsung Electronics Co., Ltd.

发明人： Il-Hyung CHUNG ,  Cheol-Ho LEE ,  Dae-Woong KIM

IPC分类号： H04L25/03 ,  H04B1/40

CPC分类号： H04L25/03031 ,  H04B1/40 ,  H04L25/03878

摘要： The present disclosure relates to an improvement in the quality of a transmitted signal, and more particularly, to an electronic apparatus and a method which are provided with a passive equalizer improving the quality of a transmitted signal when a signal is transmitted/received to/from an external apparatus, and a system for the same. The present disclosure provides a signal transmission system for improving the quality of a transmitted signal. The signal transmission system may include a transmitter that transmits a signal; a receiver that receives the signal from the transmitter; a channel that is formed between the transmitter and the receiver and transmits the signal delivered by the transmitter; and a passive equalizer that is formed between the transmitter and the receiver and controls the signal so as to have a higher impedence than a predetermined impedance at a lower frequency than a predetermined frequency of the signal.

摘要翻译： 本公开涉及传输信号的质量的改进，更具体地，涉及一种电子设备和方法，当电信号被发送/接收时，设置有无源均衡器以改善发射信号的质量 外部装置及其系统。 本公开提供了一种用于改善发送信号的质量的信号传输系统。 信号传输系统可以包括发射信号的发射机; 接收来自发射机的信号的接收机; 在发射机和接收机之间形成的信道，并发送由发射机发送的信号; 以及形成在发射机和接收机之间的无源均衡器，并且以比信号的预定频率更低的频率控制信号以具有比预定阻抗更高的阻抗。

公开(公告)号：US07742520B2

公开(公告)日：2010-06-22

申请号：US11367660

申请日：2006-03-03

申请人： Richard Simpson ,  Ruediger Kuhn

发明人： Richard Simpson ,  Ruediger Kuhn

IPC分类号： H03H7/30

CPC分类号： H04L7/033 ,  H04B3/06 ,  H04L25/03031 ,  H04L25/03885 ,  H04L2025/03681

摘要： An equalization circuit that allows particularly for lowpass filtering by transmission lines comprises a compensating equalizer controlled according to whether the edges between bits in the data waveform are early or late. Adjusting the equalization causes edges to appear in the same place, whereas if the adjustment is incorrect certain edges will be late and certain edges will be early depending on the history of “1”s and “0”s in the data stream. This is an effect of so-called intersymbol interference. The control mechanism includes circuits for recognizing patterns of “1”s and “0”s in the recent history of the data waveform whose occurrence is used to trigger the adjustment of the equalizer.

摘要翻译： 特别是允许传输线进行低通滤波的均衡电路包括根据数据波形中的位之间的边缘是早还是晚的控制的补偿均衡器。 调整均衡会使边缘出现在相同的位置，而如果调整不正确，则某些边缘将迟到，某些边缘将提前取决于数据流中“1”和“0”的历史记录。 这是所谓的码间干扰的影响。 控制机构包括用于识别出现用于触发均衡器的调整的数据波形的最近历史中的“1”和“0”的模式的电路。