会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Mixer with self-calibrating carrier leakage mechanism
    • 混合器具有自校准载体泄漏机制
    • US07603096B2
    • 2009-10-13
    • US11675688
    • 2007-02-16
    • Yuan-Hung ChungJie-Wei Lai
    • Yuan-Hung ChungJie-Wei Lai
    • H04B1/06H04B7/00
    • H03D7/1441H03D7/1458H03D2200/0033H03D2200/009
    • An embodiment of a mixer with carrier leakage self-calibrating is disclosed. The mixer comprises a double balanced mixer, a gm stage comprising a first processing unit and a second processing unit, a current duplicating circuit, a capacitor, a controller and a current compensation unit. The current duplicating circuit selects the first processing unit or the second processing unit and duplicates a duplicated current of the selected processing unit to charge the capacitor. The capacitor has a first terminal and a second terminal, wherein the second terminal is grounded and the first terminal receives the duplicated current. The controller determines a charge time of the capacitor to generate a compensation signal, wherein the charge time is the time that the voltage of the capacitor is charged to equal to a reference voltage. The current compensation unit receives the compensation signal to generate a compensation current to the mixer.
    • 公开了具有载波泄漏自校准的混频器的实施例。 混频器包括双平衡混频器,包括第一处理单元和第二处理单元的gm级,电流复制电路,电容器,控制器和电流补偿单元。 当前复制电路选择第一处理单元或第二处理单元,并复制所选择的处理单元的复制电流以对电容器充电。 电容器具有第一端子和第二端子,其中第二端子接地,第一端子接收复制的电流。 控制器确定电容器的充电时间以产生补偿信号,其中充电时间是将电容器的电压充电至等于参考电压的时间。 电流补偿单元接收补偿信号以产生到混频器的补偿电流。
    • 6. 发明授权
    • Low noise mixer with reduced distortion
    • 低噪音混音器,减少失真
    • US07446590B2
    • 2008-11-04
    • US11531400
    • 2006-09-13
    • Yuan-hung Chung
    • Yuan-hung Chung
    • H04B1/28
    • H03D7/1441H03D7/1433H03D7/1458H03D7/1491
    • A low noise RF mixer is described. The mixer of the present invention has excellent linearity due to reduction of second-order distortion. The mixer includes an inputting stage, a switching stage and a load stage. The inputting stage includes a switching pair and a transconductance circuit. The load stage is formed by resistors. The switching stage includes a switch quad (two switch pairs). Each switch pair of the switching stage has a current source for implementation of current injection to a common source (emitter) junction of the switch pair. For each switch pair of the switching stage, an inductor is connected between the current source and the common source (emitter) junction. In addition, a capacitor is connected with the inductor.
    • 描述了低噪声RF混频器。 本发明的混频器由于二阶失真的减少而具有优异的线性。 混合器包括输入级,开关级和负载级。 输入级包括开关对和跨导电路。 负载级由电阻形成。 开关级包括开关四极(两个开关对)。 开关级的每个开关对具有用于实现电流注入到开关对的共同源极(发射极)结的电流源。 对于开关级的每个开关对,电感器连接在电流源和公共源极(发射极)之间。 此外,电容器与电感器连接。
    • 7. 发明申请
    • SERVO LOOP CIRCUIT FOR CONTINUOUS TIME DC OFFSET CANCELLATION
    • 用于连续时间的伺服环路直流偏移电路
    • US20080084236A1
    • 2008-04-10
    • US11538783
    • 2006-10-04
    • Yuan-hung Chung
    • Yuan-hung Chung
    • H03L5/00
    • H04B1/30
    • A servo loop circuit suitable for DC offset cancellation in a direct conversion receiver. The servo loop in accordance with the present invention has a low pass filtering device with a smoothly and continuously changed corner frequency, so that the response time of the low pass filtering device can be limited to a short period of time without inducing in additional DC offset. The smoothly and continuously changing of the corner frequency is performed by providing a continuously variable resistance by at least one continuously variable resistive unit, which may be implemented by transistor technique. The resistance of the continuously variable resistive unit is continuously varied by smoothly controlling the level of a voltage signal applied thereto.
    • 一种适用于直接转换接收机中直流偏移消除的伺服环路电路。 根据本发明的伺服环路具有平滑且连续变化的转角频率的低通滤波装置,使得低通滤波装置的响应时间可以被限制在短时间段内,而不引起额外的直流偏移 。 通过由至少一个连续可变电阻单元提供可连续变化的电阻来实现转角频率的平稳和连续变化,这可以通过晶体管技术来实现。 连续可变电阻单元的电阻通过平滑地控制施加到其上的电压信号的电平而连续变化。
    • 8. 发明申请
    • Apparatus for removing DC offset and amplifying signal with variable gain simutaneously
    • 用于同时去除具有可变增益的直流偏移和放大信号的装置
    • US20060109050A1
    • 2006-05-25
    • US11115686
    • 2005-04-26
    • Yuan-Hung Chung
    • Yuan-Hung Chung
    • H03F3/45
    • H03F1/34H03F3/45475H03F3/45968H03F2203/45522
    • An apparatus for removing DC offset and variable gain amplifying simultaneously is provided. A signal voltage level of the output terminal of the first amplifier module is A times that of the first input terminal of the first amplifier module. A voltage level of an output DC offset signal of the first low-pass filter circuit is B times that of the input signal of the first low-pass filter circuit. The output signal of the second amplifier module is a sum of a C1-time amplified first input signal of the second amplifier module and a C2-time amplified second input signal of the second amplifier module, which satisfy the following equation: A×B×C1=−C2.
    • 提供了用于同时去除DC偏移和可变增益放大的装置。 第一放大器模块的输出端子的信号电压电平是第一放大器模块的第一输入端子的信号电压电平的A倍。 第一低通滤波器电路的输出DC偏移信号的电压电平是第一低通滤波器电路的输入信号的电压电平的B倍。 第二放大器模块的输出信号是第二放大器模块的C1时间放大的第一输入信号和第二放大器模块的C2时间放大的第二输入信号之和,其满足以下等式: line-formula description =“In-line Formulas”end =“lead”?> AxBxC1 = -C2。 <?in-line-formula description =“In-line Formulas”end =“tail”?>
    • 10. 发明授权
    • System for the coexistence between a plurality of wireless communication modules
    • 用于多个无线通信模块之间共存的系统
    • US08442581B2
    • 2013-05-14
    • US12686424
    • 2010-01-13
    • Yuan-Hung ChungHong-Kai Hsu
    • Yuan-Hung ChungHong-Kai Hsu
    • H04M1/00
    • H04B1/0053
    • A system for the coexistence between wireless communication modules sharing an antenna is disclosed. A wireless communication chipset includes a first wireless communication module capable of transmitting and receiving first wireless communication signals, a second wireless communication module capable of transmitting and receiving second wireless communication signals and a combine-separate unit capable of generating a first combined signal and separating a second combined signal. The switching device is configured to selectively transmit the first combined signal or receive the second combined signal. The connection device has a first port coupled to an antenna, a second port connected to the first port for transmitting the first combined signal or receiving the second combined signal, and a third port connected to the first port for transmitting or receiving the second wireless communication signals via the second path and the antenna.
    • 公开了一种共享天线的无线通信模块共存的系统。 无线通信芯片组包括能够发送和接收第一无线通信信号的第一无线通信模块,能够发送和接收第二无线通信信号的第二无线通信模块,以及能够生成第一组合信号并将第一组合信号分离的组合分离单元 第二组合信号。 交换设备被配置为选择性地发送第一组合信号或接收第二组合信号。 连接装置具有耦合到天线的第一端口,连接到第一端口的第二端口用于发送第一组合信号或接收第二组合信号,以及连接到第一端口的第三端口用于发送或接收第二无线通信 信号通过第二路径和天线。