公开(公告)号：US20140062218A1

公开(公告)日：2014-03-06

申请号：US13597611

申请日：2012-08-29

Applicant: Chen Chih-Sheng

Inventor： Chen Chih-Sheng

IPC: H03H11/02

CPC classification number: H03K17/693

Abstract: A radio frequency (RF) switch includes a common port, a first port, and a second port, a first semiconductor switching element disposed in a first RF pathway between the common port and the first port, a second semiconductor switching element disposed in a second RF pathway between the common port and the second port, a first pair of direct current (DC) blocking capacitors disposed to isolate the first semiconductor switching element in the first RF pathway, and a second pair of DC blocking capacitors disposed to isolate the second semiconductor switching element in the second RF pathway. The respective pairs of DC blocking capacitors allow for different bias voltages to be applied to the respective RF pathways. A charge-discharge circuit may also be employed to decrease transient switching time of the RF switch.

Abstract translation: 射频（RF）开关包括公共端口，第一端口和第二端口，设置在公共端口和第一端口之间的第一RF路径中的第一半导体开关元件，设置在第二端口中的第二半导体开关元件 公共端口和第二端口之间的RF路径，被设置为隔离第一RF路径中的第一半导体开关元件的第一对直流（DC）阻塞电容器和设置成隔离第二半导体的第二对隔离电容器 开关元件在第二RF通路中。 各对隔直电容器允许将不同的偏置电压施加到相应的RF通路。 也可以采用充放电电路来减少RF开关的瞬时切换时间。

公开(公告)号：US08358230B2

公开(公告)日：2013-01-22

申请号：US13095913

申请日：2011-04-28

Applicant: Ting-Yuan Cheng

Inventor： Ting-Yuan Cheng

IPC: H03M1/66

CPC classification number: H03M1/002 ,  H03M1/168

Abstract: A low power discrete-time electronic circuit includes an amplifier, and a variable current supply. The variable current supply is electrically connected to the amplifier, and is utilized for supplying high current to the amplifier during a switching operation and supplying low current to the amplifier during a non-switching period.

Abstract translation: 低功率离散时间电子电路包括放大器和可变电流源。 可变电流源电连接到放大器，并且用于在开关操作期间向放大器提供高电流，并且在非切换周期期间向放大器提供低电流。

公开(公告)号：US08275336B2

公开(公告)日：2012-09-25

申请号：US12821489

申请日：2010-06-23

Applicant: Chen Tse-Peng

Inventor： Chen Tse-Peng

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/1265 ,  H03B2201/0266 ,  H03J3/20 ,  H03J2200/10

Abstract: An oscillator circuit having a source of an oscillating signal, a tank circuit including an inductor and a capacitor, and a discretely switchable capacitance module configured to control an amount of capacitance in the oscillator circuit. The discretely switchable capacitance module includes, in one embodiment, a capacitor coupled between a first node and a second node, a switch, having a control node, coupled between the second node and a third node; and a DC feed circuit, having a first end coupled to the second node and a second end configured to receive a first or second control signal. The control node of the switch is tied to a predetermined bias voltage. When the first control signal is applied, the capacitor is coupled between the first node and the third node via the switch such that the capacitor is coupled in parallel with the capacitor of the tank circuit, and when the second control signal is applied the capacitor is decoupled from the tank circuit.

Abstract translation: 具有振荡信号源的振荡器电路，包括电感器和电容器的振荡电路以及被配置为控制振荡器电路中的电容量的离散可切换电容模块。 在一个实施例中，离散可切换电容模块包括耦合在第一节点和第二节点之间的电容器，具有耦合在第二节点和第三节点之间的控制节点的开关; 以及DC馈电电路，其具有耦合到第二节点的第一端和被配置为接收第一或第二控制信号的第二端。 开关的控制节点被连接到预定的偏置电压。 当施加第一控制信号时，电容器经由开关耦合在第一节点和第三节点之间，使得电容器与谐振电路的电容器并联耦合，并且当施加第二控制信号时，电容器 与油箱回路分离。

公开(公告)号：US20110317073A1

公开(公告)日：2011-12-29

申请号：US12824498

申请日：2010-06-28

Applicant: Chein-I Chang ,  Han-Jieh Chang ,  Yang-Lang Chang

Inventor： Chein-I Chang ,  Han-Jieh Chang ,  Yang-Lang Chang

IPC: H04N9/65

CPC classification number: H04N19/59 ,  H04N19/132 ,  H04N19/172 ,  H04N19/182 ,  H04N19/186 ,  H04N19/30 ,  H04N19/587

Abstract: Techniques are provided herein for receiving at a video processing device color video frames comprising grayscale components and color components. The grayscale components corresponding to each of the color video frames are extracted as each of the color video frames is received to obtain grayscale video frames. The grayscale video frames are transmitted at a first transmission rate. Color components for selected color video frames are periodically fused with selected grayscale video frames to obtain fused color video frames, and the fused color video frames are transmitted at a second transmission rate interspersed with the grayscale video frames transmitted at the first transmission rate.

Abstract translation: 本文提供了用于在视频处理设备处接收包括灰度分量和颜色分量的彩色视频帧的技术。 随着每个彩色视频帧被接收以获得灰度视频帧，提取对应于每个彩色视频帧的灰度分量。 以第一传输速率发送灰度视频帧。 所选择的彩色视频帧的颜色分量与所选择的灰度视频帧周期性地融合，以获得融合的彩色视频帧，并且融合的彩色视频帧以散布有以第一传输速率传输的灰度视频帧的第二传输速率传输。

公开(公告)号：US07948317B2

公开(公告)日：2011-05-24

申请号：US12619684

申请日：2009-11-17

Applicant: Kuang-Lieh Wan

Inventor： Kuang-Lieh Wan

IPC: H03F3/21

CPC classification number: H03F1/302 ,  H03F3/189 ,  H03G3/3042

Abstract: A power amplifier integrated circuit, which generates an RF output signal by amplifying an RF input signal, includes a thermal-sensing circuit, a feedback circuit, a logic judging circuit, an adjusting circuit, and an amplifying circuit. The thermal-sensing circuit generates a thermal sensing signal according to the operational temperature, and the feedback circuit generates a power compensation circuit according to power variations in the RF output signal. The logic judging circuit outputs a compensation signal according to the thermal sensing signal and the power compensation signal. The adjusting circuit adjusts the level of the RF input signal according to the compensation signal, thereby generating a corresponding 1st stage RF signal. The amplifying circuit can amplify the 1st stage RF signal, thereby generating the corresponding RF output signal.

Abstract translation: 通过放大RF输入信号来产生RF输出信号的功率放大器集成电路包括热感测电路，反馈电路，逻辑判断电路，调整电路和放大电路。 热敏电路根据工作温度产生热敏信号，反馈电路根据RF输出信号的功率变化产生功率补偿电路。 逻辑判断电路根据热感测信号和功率补偿信号输出补偿信号。 调整电路根据补偿信号调整RF输入信号的电平，从而生成相应的第一级RF信号。 放大电路可以放大第一级RF信号，从而产生相应的RF输出信号。

公开(公告)号：US20100278285A1

公开(公告)日：2010-11-04

申请号：US12623537

申请日：2009-11-23

Applicant: I-Hung Lin

Inventor： I-Hung Lin

IPC: H04L27/22 ,  H04B1/18

CPC classification number: H04B1/30 ,  H04B1/0032 ,  H04L27/3863 ,  H04L27/3872

Abstract: A receiver receiving a Radio Frequency (RF) signal and generating a baseband signal is provided. An RF module receives the RF signal and down convert the RF signal according to a first oscillation frequency to generate an Intermediate Frequency (IF) signal. An IF module is coupled to the RF module and arranged to receive the IF signal and down convert the IF signal according to a second oscillation frequency to generate the baseband signal. A calibration module is coupled to the RF module and arranged to calculate the IF signal according to a third oscillation frequency to detect an I/Q mismatch, and generate an adjustment signal, accordingly, to calibrate the I/O mismatch.

Abstract translation: 提供接收射频（RF）信号并产生基带信号的接收机。 RF模块接收RF信号并根据第一振荡频率对RF信号进行下变频以产生中频（IF）信号。 IF模块耦合到RF模块并被布置成接收IF信号，并根据第二振荡频率对IF信号进行下变频以产生基带信号。 校准模块耦合到RF模块并被布置成根据第三振荡频率计算IF信号以检测I / Q失配，并且相应地生成调整信号以校准I / O失配。

公开(公告)号：US07777586B2

公开(公告)日：2010-08-17

申请号：US12107532

申请日：2008-04-22

Applicant: Yi-Fong Wang ,  Wei-Kung Deng

Inventor： Yi-Fong Wang ,  Wei-Kung Deng

IPC: H03B5/12

CPC classification number: H03L7/18 ,  H04B1/006

Abstract: A multi-band electronic apparatus and method thereof is provided. The method comprises outputting a first output signal in the first band by a first voltage controlled oscillator according to a switch control signal and a control voltage, outputting a second output signal in the second band by a second voltage controlled oscillator according to the switch control signal and the control voltage, the second band being not completely overlapped by the first band, performing frequency division selectively on the first output signal or the second frequency divided signal according to the switch control signal, and outputting a first frequency divided signal, determining a phase difference between the first frequency divided signal and a reference signal to output a phase difference signal, outputting the control voltage according to the phase difference signal, and selectively driving the first or the second voltage controlled oscillators by the control voltage according to the switch control signal.

Abstract translation: 提供了一种多频带电子设备及其方法。 该方法包括根据开关控制信号和控制电压由第一压控振荡器输出第一频带中的第一输出信号，根据开关控制信号通过第二压控振荡器输出第二频带中的第二输出信号 和所述控制电压，所述第二频带不完全与所述第一频带重叠，根据所述开关控制信号对所述第一输出信号或所述第二分频信号选择性地进行分频，并输出第一分频信号，确定相位 第一分频信号和参考信号之间的差异，以输出相位差信号，根据相位差信号输出控制电压，并根据开关控制信号选择性地驱动第一或第二压控振荡器的控制电压 。

公开(公告)号：US07693503B2

公开(公告)日：2010-04-06

申请号：US11768901

申请日：2007-06-26

Applicant: Jiong-Guang Su ,  Shyh-Chyi Wong

Inventor： Jiong-Guang Su ,  Shyh-Chyi Wong

IPC: H04B1/26 ,  H04B1/28

CPC classification number: H03D7/1441

Abstract: A mixer for down-converting an input signal to an output signal is disclosed. The mixer includes an amplifying circuit and a down-converting circuit. The amplifying circuit is utilized for amplifying the input signal to generate an amplified signal. The down-converting circuit includes a filtering module, a loading module, and a down-converting module. The filtering module is coupled to the amplifying circuit, and is utilized for filtering low-frequency components in the amplified signal. The loading module is coupled to the amplifying circuit and a predetermined voltage level, and is utilized for providing a DC bias voltage to the amplifying circuit. The down-converting module is coupled to the filtering module and the predetermined voltage level, and is utilized for generating the output signal according to a local oscillating signal.

Abstract translation: 公开了一种用于将输入信号下变频为输出信号的混频器。 混频器包括放大电路和下变频电路。 放大电路用于放大输入信号以产生放大信号。 下变频电路包括滤波模块，加载模块和下变频模块。 滤波模块耦合到放大电路，用于对放大信号中的低频分量进行滤波。 加载模块耦合到放大电路和预定的电压电平，并用于向放大电路提供DC偏置电压。 下变频模块耦合到滤波模块和预定电压电平，并用于根据本地振荡信号产生输出信号。

公开(公告)号：US20080309435A1

公开(公告)日：2008-12-18

申请号：US12112028

申请日：2008-04-30

Applicant: Han-Hao Wu

Inventor： Han-Hao Wu

IPC: H01P1/20

CPC classification number: H03H7/0123 ,  H01P1/20363 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1253 ,  H03B5/18 ,  H03H2250/00

Abstract: A noise filter connected to an LC oscillator is provided. The noise filter comprises a transmission line, a DC bias circuit, and a capacitor. The transmission line is connected to the LC oscillator. The DC bias circuit is connected to the transmission line and provides a bias current. The capacitor has one end connected between the transmission line and the DC bias circuit and the other end AC grounded and provides a path to AC ground to the transmission line. A length of the transmission line is odd times that of a quarter-wavelength of a secondary harmonic wave of the LC oscillator.

Abstract translation: 提供连接到LC振荡器的噪声滤波器。 噪声滤波器包括传输线，DC偏置电路和电容器。 传输线连接到LC振荡器。 直流偏置电路连接到传输线并提供偏置电流。 电容器的一端连接在传输线和直流偏置电路之间，另一端交流接地，并向传输线提供到交流地的路径。 传输线的长度是LC振荡器的二次谐波的四分之一波长的奇数倍。

公开(公告)号：US07193475B2

公开(公告)日：2007-03-20

申请号：US11124094

申请日：2005-05-09

Applicant: Jiong-Guang Su ,  Tsyr-Shyang Liou ,  Shyh-Chyi Wong

Inventor： Jiong-Guang Su ,  Tsyr-Shyang Liou ,  Shyh-Chyi Wong

IPC: H03F3/45

CPC classification number: H03F1/22 ,  H03F2200/294 ,  H03F2200/372

Abstract: A single-ended input to differential output LNA with a cascode topology of the present invention overcomes a much greater consumption of current and area for the single-ended input to differential output LNA of the prior art. The LNA needs to supply an operating bias for each transistor. The LNA has a few transistors, a few capacitive impedances, and a few inductive impedances. The main objective of the present invention not only reduces costs and conserves area and current consumption, but also has a much higher linearity and gain under the same current consumption when compare to the prior art.

Abstract translation: 具有本发明的共源共栅拓扑的差分输出LNA的单端输入克服了现有技术的单端输入到差分输出LNA的电流和面积的更大的消耗。 LNA需要为每个晶体管提供工作偏置。 LNA具有几个晶体管，几个电容阻抗和几个电感阻抗。 本发明的主要目的不仅降低了成本并且节省了面积和电流消耗，而且与现有技术相比，在相同的电流消耗下也具有更高的线性度和增益。