公开(公告)号：US20130278320A1

公开(公告)日：2013-10-24

申请号：US13609288

申请日：2012-09-11

申请人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

发明人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

IPC分类号： G06G7/12

CPC分类号： H03D7/1441 ,  H03D7/1458

摘要： A mixer includes a transformer and a mixing circuit. The transformer is employed for receiving an input signal to generate a differential output. The mixing circuit is coupled to the transformer, and employed for mixing the differential output with N oscillating signals having different phases to generate a plurality of mixed output signals, wherein N is greater than 2.

摘要翻译： 混合器包括变压器和混合电路。 变压器用于接收输入信号以产生差分输出。 混合电路耦合到变压器，并用于将差分输出与具有不同相位的N个振荡信号混合以产生多个混合输出信号，其中N大于2。

公开(公告)号：US20060197588A1

公开(公告)日：2006-09-07

申请号：US11307985

申请日：2006-03-01

申请人： Chia-Jun Chang

发明人： Chia-Jun Chang

IPC分类号： H03K5/00

CPC分类号： H03H11/04 ,  H03H11/1286

摘要： A filtering device for filtering N input signals to generate a filtered signal. The filtering device includes an input module and a first circuit. The input module includes at least N impedance components. Each impedance component comprises a first end and a second end. The first end is utilized for receiving one of the N input signals. The first circuit includes a non-virtual ground input end coupled to the second ends of the N impedance components, and an amplifier including a first input end and an output end. There are multiple feedback (MFB) paths between the first input end and the output end. The MFB paths are coupled to the non-virtual ground input end. The output end of the amplifier is utilized for outputting the filtered signal. The first circuit and the input module form an MFB filter.

摘要翻译： 一种用于滤波N个输入信号以产生滤波信号的滤波装置。 滤波装置包括输入模块和第一电路。 输入模块至少包括N个阻抗分量。 每个阻抗部件包括第一端和第二端。 第一端用于接收N个输入信号中的一个。 第一电路包括耦合到N个阻抗分量的第二端的非虚拟接地输入端，以及包括第一输入端和输出端的放大器。 在第一输入端和输出端之间有多个反馈（MFB）路径。 MFB路径耦合到非虚拟地面输入端。 放大器的输出端用于输出滤波信号。 第一个电路和输入模块形成一个MFB滤波器。

公开(公告)号：US08816771B2

公开(公告)日：2014-08-26

申请号：US13607830

申请日：2012-09-10

申请人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

发明人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

IPC分类号： H03F3/45

CPC分类号： H03F3/45 ,  H03F1/223 ,  H03F3/45179 ,  H03F2200/294 ,  H03F2203/45562 ,  H03F2203/45638

摘要： A signal amplifying circuit includes: an input stage circuit, arranged to receive an input signal; a first inductive device coupled between the input stage circuit and a first reference voltage; an output stage circuit arranged to generate an output signal according to the input signal; and a second inductive device coupled between the output stage circuit and a second reference voltage, wherein at least a part of a winding of the first inductive element is cross-coupled to at least a part of a winding of the second inductive element.

摘要翻译： 信号放大电路包括：输入级电路，用于接收输入信号; 耦合在所述输入级电路和第一参考电压之间的第一感应器件; 布置成根据输入信号产生输出信号的输出级电路; 以及耦合在所述输出级电路和第二参考电压之间的第二感应器件，其中所述第一电感元件的绕组的至少一部分与所述第二电感元件的绕组的至少一部分交叉耦合。

公开(公告)号：US20080012631A1

公开(公告)日：2008-01-17

申请号：US11762762

申请日：2007-06-13

申请人： Chia-Jun Chang

发明人： Chia-Jun Chang

IPC分类号： G05F1/10

CPC分类号： G05F3/205

摘要： The present invention discloses a bias current generation circuit for generating a bias current required by a low voltage domain circuit. The bias current generation circuit includes a high voltage domain current generation circuit and a current converting circuit. The high voltage domain current generation circuit generates a first current. The current converting circuit is coupled to the high voltage domain current generation circuit and the low voltage domain circuit and generates the bias current according to the first current. The high voltage domain current generation circuit is powered by a first supply voltage, while the current converting circuit and the low voltage domain circuit are powered by a second supply voltage. The voltage level of the first supply voltage is higher than the voltage level of the second supply voltage.

摘要翻译： 本发明公开了一种用于产生低电压域电路所需的偏置电流的偏置电流产生电路。 偏置电流产生电路包括高电压域电流产生电路和电流转换电路。 高电压域电流产生电路产生第一电流。 电流转换电路耦合到高电压域电流产生电路和低电压域电路，并根据第一电流产生偏置电流。 高压域电流产生电路由第一电源电压供电，而电流转换电路和低电压域电路由第二电源电压供电。 第一电源电压的电压电平高于第二电源电压的电压电平。

公开(公告)号：US20060197592A1

公开(公告)日：2006-09-07

申请号：US11307421

申请日：2006-02-07

申请人： Chia-Jun Chang

发明人： Chia-Jun Chang

IPC分类号： H03F1/36

CPC分类号： H03F3/45968 ,  H03F1/34 ,  H03F3/45475 ,  H03F2203/45522 ,  H03F2203/45591 ,  H03G1/0035

摘要： A variable gain amplifier includes a first, second, and third impedances, an OP amplifier, and a control circuit. The OP amplifier has a first input end and an output end; the output end for generating outputting an output signal. Two ends of the first impedances are coupled to an input signal and the first input end respectively. Two ends of the second impedances are coupled to the first input end and the output end respectively. An end of the third impedance is coupled between the first impedance and the first input end. The control circuit is coupled to the first and third impedances. The control circuit adjusts impedance values of the first and third impedances to change a gain of the variable gain amplifier and to maintain a substantially constant DC offset at the output end.

摘要翻译： 可变增益放大器包括第一，第二和第三阻抗，OP放大器和控制电路。 OP放大器具有第一输入端和输出端; 用于产生输出输出信号的输出端。 第一阻抗的两端分别耦合到输入信号和第一输入端。 第二阻抗的两端分别耦合到第一输入端和输出端。 第三阻抗的结束耦合在第一阻抗和第一输入端之间。 控制电路耦合到第一和第三阻抗。 控制电路调节第一和第三阻抗的阻抗值以改变可变增益放大器的增益并且在输出端保持基本恒定的DC偏移。

公开(公告)号：US07015730B2

公开(公告)日：2006-03-21

申请号：US10851175

申请日：2004-05-24

申请人： Chia-Jun Chang ,  Chao-Cheng Lee

发明人： Chia-Jun Chang ,  Chao-Cheng Lee

IPC分类号： G11C27/02

CPC分类号： H03M1/0663 ,  H03M1/1245

摘要： The invention is to provide a receiving end architecture comprising a variable gain amplifier, for outputting a pair of differential signals comprising a first signal and a second signal via a first and a second outputs respectively according to the receiving signal through adjusting the amplitude of the receiving signal; a mix-type sample-and-hold circuit for outputting a first sampled signal via a first end and a second sampled signal via a second end and then outputting the second sampled signal via the first end and the first sampled signal via the second end through performing sample-and-hold on the pair of differential signals; and an analog/digital converter coupled to the mix-type sample-and-hold circuit for generating a digital signal according to the first and the second sampled signals.

摘要翻译： 本发明是提供一种包括可变增益放大器的接收端架构，用于经由第一和第二输出分别经由第一和第二输出通过调整接收的振幅来输出包括第一和第二输出的一对差分信号 信号; 混合型采样和保持电路，用于经由第一端输出第一采样信号和经由第二端输出第二采样信号，然后经由第一端和第一采样信号经由第二端经由第二端输出第二采样信号 对差分信号对进行采样和保持; 以及耦合到所述混合型取样和保持电路的模拟/数字转换器，用于根据所述第一和第二采样信号产生数字信号。

公开(公告)号：US20140049441A1

公开(公告)日：2014-02-20

申请号：US13612851

申请日：2012-09-13

申请人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

发明人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

IPC分类号： H01Q1/50

CPC分类号： H01Q1/50

摘要： A signal converting circuit includes: a first switching circuit; a second switching circuit; and a first balance-unbalance circuit (Balun) having a first signal terminal coupled to an antenna, a second signal terminal coupled to the first switching circuit, and a third signal terminal coupled to the second switching circuit; wherein when the first balance-unbalance circuit operates in a first signal converting mode, the first switching circuit and the second switching circuit are arranged to couple the second signal terminal and the third signal terminal, respectively, to a first signal processing circuit, and when the first balance-unbalance circuit does not operate in the first signal converting mode, the first switching circuit and the second switching circuit are arranged to couple the second signal terminal and the third signal terminal, respectively, to a reference voltage.

摘要翻译： 信号转换电路包括：第一开关电路; 第二开关电路; 以及第一平衡不平衡电路（Balun），其具有耦合到天线的第一信号端子，耦合到所述第一开关电路的第二信号端子和耦合到所述第二开关电路的第三信号端子; 其中当所述第一平衡不平衡电路以第一信号转换模式工作时，所述第一开关电路和所述第二开关电路分别被布置成将所述第二信号端和所述第三信号端耦合到第一信号处理电路，并且当 第一平衡不平衡电路在第一信号转换模式中不工作，第一开关电路和第二开关电路分别被布置成将第二信号端子和第三信号端子耦合到参考电压。

公开(公告)号：US20140022018A1

公开(公告)日：2014-01-23

申请号：US13615567

申请日：2012-09-13

申请人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

发明人： Hsien-Ku Chen ,  Chia-Jun Chang ,  Ka-Un Chan ,  Ying-Hsi Lin

IPC分类号： H03G3/00

CPC分类号： H03F3/45 ,  H03F1/223 ,  H03F3/195 ,  H03F3/26 ,  H03F3/45179 ,  H03F2200/294 ,  H03F2203/45394 ,  H03F2203/45621 ,  H03F2203/45638

摘要： An amplifier includes a transformer and a first stage gain circuit. The transformer includes a primary coil and a secondary coil. The primary coil is utilized for receiving an input signal. The first stage gain circuit has a first input port, which is coupled to the primary coil. The first stage gain circuit is utilized for gaining the input signal so as to generate a first output.

摘要翻译： 放大器包括变压器和第一级增益电路。 变压器包括初级线圈和次级线圈。 初级线圈用于接收输入信号。 第一级增益电路具有耦合到初级线圈的第一输入端口。 第一级增益电路用于获得输入信号以产生第一输出。

公开(公告)号：US20110169587A1

公开(公告)日：2011-07-14

申请号：US12979354

申请日：2010-12-28

申请人： Po-Chih Wang ,  Chia-Jun Chang

发明人： Po-Chih Wang ,  Chia-Jun Chang

IPC分类号： H01P5/12

CPC分类号： H04B1/52 ,  H03H2007/386

摘要： A signal transmitting/receiving circuit includes a transmitter, a receiver, a balun and an impedance matching circuit. The transmitter is utilized for transmitting an output signal. The receiver is utilized for receiving an input signal. The balun includes a first input terminal, a second input terminal and an output terminal. The impedance matching circuit, which is coupled between the transmitter, the receiver, and the balun, provides transmitting impedance when the transmitter transmits the output signal such that an output signal may be output at an output terminal of the balun via a transmitting path. Also, the impedance matching circuit provides transmitting impedance when the receiver receives the input signal such that the input signal may be transmitted from the output terminal of the balun to the receiver via a receiving path.

摘要翻译： 信号发送/接收电路包括发射机，接收机，平衡 - 不平衡变换器和阻抗匹配电路。 发射机用于传输输出信号。 接收机用于接收输入信号。 平衡 - 不平衡变换器包括第一输入端子，第二输入端子和输出端子。 耦合在发送器，接收器和平衡 - 不平衡转换器之间的阻抗匹配电路在发送器发送输出信号时提供发送阻抗，使得可以经由发送路径在平衡 - 不平衡转换器的输出端子处输出输出信号。 此外，当接收器接收到输入信号时，阻抗匹配电路提供发射阻抗，使得输入信号可以经由接收路径从平衡 - 不平衡变换器的输出端发送到接收器。

公开(公告)号：US07190173B2

公开(公告)日：2007-03-13

申请号：US10908817

申请日：2005-05-27

申请人： Chia-Jun Chang ,  Tzung-Ming Chen

发明人： Chia-Jun Chang ,  Tzung-Ming Chen

IPC分类号： G01R35/00

CPC分类号： G01R35/005

摘要： The present invention discloses an impedance calibration circuit and method for calibrating an equivalent impedance of a semiconductor circuit element. The disclosed impedance calibration circuit includes a reference circuit, a second circuit element, and a controlling circuit. The reference circuit receives a test signal and outputs a first signal. The second circuit element is coupled to the semiconductor circuit element to form a test circuit and receives the test signal and outputs a second signal. The controlling circuit is coupled to the reference circuit and the test circuit for comparing the first signal with the second signal and adjusting the equivalent impedance of the semiconductor circuit element accordingly.

摘要翻译： 本发明公开了一种用于校准半导体电路元件的等效阻抗的阻抗校准电路和方法。 所公开的阻抗校准电路包括参考电路，第二电路元件和控制电路。 参考电路接收测试信号并输出​​第一信号。 第二电路元件耦合到半导体电路元件以形成测试电路并接收测试信号并输出​​第二信号。 控制电路耦合到参考电路和测试电路，用于将第一信号与第二信号进行比较，并相应地调整半导体电路元件的等效阻抗。