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公开(公告)号：US08204388B2
公开(公告)日：2012-06-19
申请号：US12496514
申请日：2009-07-01
IPC分类号： H04B10/06
CPC分类号： H03F1/083 , H01L31/02019 , H01L31/103 , H01L31/105 , H03F3/087
摘要： Consistent the present disclosure, a receive circuit is provided that includes a balanced detector portion and a transimpedance amplifier (TIA). The anode of one photodiode is connected to the cathode of the other by a bonding pad, which supplies the sum of the currents generated in each photodiode to an input of the TIA. Thus, the TIA may, for example, have a single input, as opposed to multiple inputs, thereby reducing the number of connections so that the photodiodes and the TIA may be integrated onto a smaller die. In addition, since there are few connections, fewer TIAs are required and differential stages are unnecessary. Power consumption is thus reduced, and, since the photodiode current is fed through one input to the TIA, fewer feedback resistors are required, thereby reducing thermal noise. In addition, since the anode of one photodiode is connected to the cathode of the other, the dark current generated in each flows in opposite directions, and is therefore effectively cancelled out. Since one input is provided, impedance matching with other inputs is unnecessary, nor is additional DC biasing circuitry needed. As described in greater detail below, an example of the present disclosure includes a bonding pad, which connects the two photodiodes and provides the input current to the TIA.
摘要翻译： 与本公开一致，提供了包括平衡检测器部分和跨阻抗放大器（TIA）的接收电路。 一个光电二极管的阳极通过焊盘连接到另一个的阴极，焊盘将每个光电二极管中产生的电流之和提供给TIA的输入端。 因此，TIA可以例如具有与多个输入相反的单个输入，从而减少连接的数量，使得光电二极管和TIA可以集成到较小的管芯上。 另外，由于几乎没有连接，需要较少的TIA，而不需要差分级。 因此降低功耗，并且由于光电二极管电流通过一个输入馈送到TIA，所以需要更少的反馈电阻，从而降低热噪声。 此外，由于一个光电二极管的阳极与另一个光电二极管的阴极连接，所以每个光电二极管中产生的暗电流沿相反的方向流动，因此被有效地抵消。 由于提供了一个输入，因此与其他输入的阻抗匹配是不必要的，也不需要额外的DC偏置电路。 如下面更详细描述的，本公开的示例包括接合焊盘，其连接两个光电二极管并将输入电流提供给TIA。
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公开(公告)号：US09042820B2
公开(公告)日：2015-05-26
申请号：US12790780
申请日：2010-05-28
申请人： Huan-Shang Tsai , Jeffrey T. Rahn
发明人： Huan-Shang Tsai , Jeffrey T. Rahn
CPC分类号： H04B10/697
摘要： An optical receiver circuit is disclosed in which a number of electrical signals are processed to extract data encoded therein. The electrical signals may be compared during the process to selectively remove one or more waveforms from one or more corresponding electrical signals. Various data signals, each including one or more waveforms, may then be processed to extract the encoded data. The optical receiver circuit reduces, or eliminates, electrical offsets which may be present in one or more of the electrical signals to reduce corresponding errors in the encoded data signals.
摘要翻译： 公开了一种光接收机电路，其中处理多个电信号以提取其中编码的数据。 可以在该过程期间比较电信号以选择性地从一个或多个对应的电信号中去除一个或多个波形。 然后可以处理各自包括一个或多个波形的数据信号以提取编码数据。 光接收器电路减少或消除可能存在于一个或多个电信号中的电偏移以减少编码数据信号中的相应误差。
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3.发明授权Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier 失效用于宽带功率放大器的自适应联合线性化，均衡和延迟对准公开(公告)号：US06172565B2
公开(公告)日：2001-01-09
申请号：US09041604
申请日：1998-03-13
IPC分类号： H03F126
CPC分类号： H03F1/3229
摘要： A feedforward linearizer includes a signal cancellation circuit and an error cancellation circuit. The signal cancellation circuit includes a tap delay line, that delay the input signal by a predetermined time delay so as to provide several delayed versions of the input signal. Each delayed version of the input signal is weighted by a tap coefficient. The weighted signals are then added together and fed to the power amplifier. The tap coefficients are derived such that the signals traveling through the upper and lower branch of the signal cancellation loop are aligned and that the output signal of the power amplifier is equalized.
摘要翻译： 前馈线性化电路包括信号消除电路和误差消除电路。 信号消除电路包括抽头延迟线，其将输入信号延迟预定的时间延迟，以便提供输入信号的几个延迟版本。 每个延迟版本的输入信号由抽头系数加权。 然后将加权信号相加并馈送到功率放大器。 导出抽头系数，使得通过信号消除环路的上部和下部分支行进的信号被对准，并且功率放大器的输出信号相等。
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4.发明申请公开(公告)号：US20110148522A1
公开(公告)日：2011-06-23
申请号：US12646674
申请日：2009-12-23
申请人： Huan-Shang Tsai , Yong K. Yim
发明人： Huan-Shang Tsai , Yong K. Yim
IPC分类号： H03F3/45
CPC分类号： H03F3/087
摘要： Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are connected to photodiodes and output voltage signals for further processing. Typically, the dummy TIA is not connected to a photodiode and does not supply a useful output. The dummy TIA, however, is subject to the same processing and temperature variations as the other TIAs, and, as a result, the voltage on the dummy TIA inverting input will be the same or substantially the same as that of the other TIAs. Thus, by sensing the dummy TIA inverting input voltage, an appropriate photodiode bias can be obtained without direct measurement of the voltage on the inverting inputs of the other TIAs.
摘要翻译： 根据本公开，与衬底连接的一个或多个其他跨阻放大器（TIA）一起提供“虚拟”跨阻抗放大器（虚拟TIA），其连接到光电二极管并输出电压信号用于进一步处理。 通常，虚拟TIA不连接到光电二极管，并且不提供有用的输出。 然而，虚拟TIA受到与其他TIA相同的处理和温度变化，因此，虚拟TIA反相输入端的电压将与其他TIA的电压相同或基本相同。 因此，通过感测伪TIA反相输入电压，可以获得适当的光电二极管偏置，而不需要直接测量其他TIA的反相输入端的电压。
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公开(公告)号：US07961053B1
公开(公告)日：2011-06-14
申请号：US12646674
申请日：2009-12-23
申请人： Huan-Shang Tsai , Yong K. Yim
发明人： Huan-Shang Tsai , Yong K. Yim
IPC分类号： H03F3/08
CPC分类号： H03F3/087
摘要： Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are connected to photodiodes and output voltage signals for further processing. Typically, the dummy TIA is not connected to a photodiode and does not supply a useful output. The dummy TIA, however, is subject to the same processing and temperature variations as the other TIAs, and, as a result, the voltage on the dummy TIA inverting input will be the same or substantially the same as that of the other TIAs. Thus, by sensing the dummy TIA inverting input voltage, an appropriate photodiode bias can be obtained without direct measurement of the voltage on the inverting inputs of the other TIAs.
摘要翻译： 根据本公开，与衬底连接的一个或多个其他跨阻放大器（TIA）一起提供“虚拟”跨阻抗放大器（虚拟TIA），其连接到光电二极管并输出电压信号用于进一步处理。 通常，虚拟TIA不连接到光电二极管，并且不提供有用的输出。 然而，虚拟TIA受到与其他TIA相同的处理和温度变化，因此，虚拟TIA反相输入端的电压将与其他TIA的电压相同或基本相同。 因此，通过感测伪TIA反相输入电压，可以获得适当的光电二极管偏置，而不需要直接测量其他TIA的反相输入端的电压。
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公开(公告)号：US20070133671A1
公开(公告)日：2007-06-14
申请号：US11329265
申请日：2006-01-10
申请人： Huan-Shang Tsai
发明人： Huan-Shang Tsai
IPC分类号： H03H7/30
摘要： A delay line for deployment in an equalizer to insert a delay in a signal received by the delay line employs a plurality of cascaded delay stages where the delay per stage provided by an active unit-gain amplifier in each stage that provides sufficient impedance mismatch between the delay stages without substantial deterioration of the frequency response of the client signal undergoing deterioration of the frequency response of the client signal undergoing delay.
摘要翻译： 用于部署在均衡器中以延迟由延迟线接收的信号的延迟的延迟线采用多个级联延迟级，其中由每个级中的有源单位增益放大器提供的每级提供的延迟，其在所述延迟线之间提供足够的阻抗失配 延迟阶段，而客户端信号经受延迟的客户端信号的频率响应恶化的频率响应的实质性恶化。
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公开(公告)号：US08339799B2
公开(公告)日：2012-12-25
申请号：US12550446
申请日：2009-08-31
申请人： Huan-Shang Tsai , Jie Tang
发明人： Huan-Shang Tsai , Jie Tang
CPC分类号： H01L23/49838 , G02B6/12019 , H01L24/06 , H01L2224/056 , H01L2224/05624 , H01L2224/05639 , H01L2224/05644 , H01L2224/05647 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01047 , H01L2924/01079 , H01L2924/014 , H01L2924/14 , H01L2924/1433 , H01L2924/00014
摘要： An improved integrated circuit (IC) layout is described that provides conductive pads on opposite sides of a substrate. The conductive pads provide for connectivity to the chip in different chip orientations. Accordingly, multiple chips having the same layout can be provided in a package, instead of providing each chip with a different layout. Since the same layout may be used for each chip, manufacturing costs are reduced.
摘要翻译： 描述了一种改进的集成电路（IC）布局，其在衬底的相对侧上提供导电焊盘。 导电焊盘提供以不同芯片方向连接到芯片。 因此，可以在封装中提供具有相同布局的多个芯片，而不是为每个芯片提供不同的布局。 由于对于每个芯片可以使用相同的布局，所以制造成本降低。
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公开(公告)号：US08054876B2
公开(公告)日：2011-11-08
申请号：US11329265
申请日：2006-01-10
申请人： Huan-Shang Tsai
发明人： Huan-Shang Tsai
IPC分类号： H03H7/30
摘要： A delay line for deployment in an equalizer to insert a delay in a signal received by the delay line employs a plurality of cascaded delay stages where the delay per stage provided by an active unit-gain amplifier in each stage that provides sufficient impedance mismatch between the delay stages without substantial deterioration of the frequency response of the client signal undergoing deterioration of the frequency response of the client signal undergoing delay.
摘要翻译： 用于部署在均衡器中以延迟由延迟线接收的信号的延迟的延迟线采用多个级联延迟级，其中由每个级中的有源单位增益放大器提供的每级提供的延迟，其在所述延迟线之间提供足够的阻抗失配 延迟阶段，而客户端信号经受延迟的客户端信号的频率响应恶化的频率响应的实质性恶化。
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公开(公告)号：US20110052117A1
公开(公告)日：2011-03-03
申请号：US12550446
申请日：2009-08-31
申请人： Huan-Shang Tsai , Jie Tang
发明人： Huan-Shang Tsai , Jie Tang
CPC分类号： H01L23/49838 , G02B6/12019 , H01L24/06 , H01L2224/056 , H01L2224/05624 , H01L2224/05639 , H01L2224/05644 , H01L2224/05647 , H01L2924/01013 , H01L2924/01029 , H01L2924/01033 , H01L2924/01047 , H01L2924/01079 , H01L2924/014 , H01L2924/14 , H01L2924/1433 , H01L2924/00014
摘要： An improved integrated circuit (IC) layout is described that provides conductive pads on opposite sides of a substrate. The conductive pads provide for connectivity to the chip in different chip orientations. Accordingly, multiple chips having the same layout can be provided in a package, instead of providing each chip with a different layout. Since the same layout may be used for each chip, manufacturing costs are reduced.
摘要翻译： 描述了在衬底的相对侧上提供导电焊盘的改进的集成电路（IC）布局。 导电焊盘提供以不同芯片方向连接到芯片。 因此，可以在封装中提供具有相同布局的多个芯片，而不是为每个芯片提供不同的布局。 由于每个芯片可以使用相同的布局，所以制造成本降低。
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10.发明授权Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units by selectable switching of power amplifier 失效通过功率放大器的可选择切换来增强移动无线电单元的发射机电路效率的方法和装置公开(公告)号：US06208846B1
公开(公告)日：2001-03-27
申请号：US08782355
申请日：1997-01-13
申请人： Young-Kai Chen , Sanjay Kasturia , Jenshan Lin , Huan-Shang Tsai
发明人： Young-Kai Chen , Sanjay Kasturia , Jenshan Lin , Huan-Shang Tsai
IPC分类号： H04B104
CPC分类号： H04W52/52 , H03F2203/7239 , H04B2001/0416
摘要： A circuit that increases the efficiency of a radio frequency mobile telephone unit is disclosed. When the signal strength between the base station and the mobile unit is below a predetermined signal strength level, the power amplifier is turned on and the transmitter circuit of the mobile unit fully amplifies the RF signal. However, when the signal strength between the mobile telephone unit and the base station is above a predetermined signal strength level, the power amplifier is deactivated and bypassed from the transmitter circuitry, thereby conserving the battery power of the mobile unit.
摘要翻译： 公开了一种提高射频移动电话机的效率的电路。 当基站和移动单元之间的信号强度低于预定信号强度电平时，功率放大器导通，移动单元的发射机电路完全放大RF信号。 然而，当移动电话单元和基站之间的信号强度高于预定的信号强度水平时，功率放大器被去激活并从发射机电路旁路，从而节省了移动单元的电池功率。
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