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    • 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。
    • 5. 发明申请
    • AMPLIFIER CIRCUIT HAVING STACKED MAIN AMPLIFIER AND PARALLEL SUB-AMPLIFIER
    • 具有堆叠主放大器和并联放大器的放大器电路
    • US20090189695A1
    • 2009-07-30
    • US12022159
    • 2008-01-30
    • Jie-Wei LaiMin Chen
    • Jie-Wei LaiMin Chen
    • H03F3/68
    • H03F1/223H03F1/26H03F1/3205H03F3/211H03F2200/294
    • An amplifier circuit for amplifying an input signal to generate an output signal is provided. The amplifier circuit has a stacked main amplifier, a parallel sub-amplifier, and a signal combiner. The stacked main amplifier includes a first amplifier unit for outputting a first amplified signal generated from processing the input signal; and a second amplifier unit for outputting a second amplified signal generated from processing the first amplified signal. The first amplifier unit and the second amplifier unit share bias current. The parallel sub-amplifier is coupled to the stacked main amplifier according to a parallel connection fashion, and outputs a third amplified signal generated from processing the input signal. The signal combiner combines the second amplified signal and the third amplified signal to generate the output signal.
    • 提供了用于放大输入信号以产生输出信号的放大器电路。 放大器电路具有堆叠的主放大器,并联子放大器和信号组合器。 堆叠的主放大器包括:第一放大器单元,用于输出从处理输入信号产生的第一放大信号; 以及第二放大器单元,用于输出从处理第一放大信号产生的第二放大信号。 第一放大器单元和第二放大器单元共享偏置电流。 并联子放大器根据并联连接方式耦合到堆叠的主放大器,并且输出从处理输入信号产生的第三放大信号。 信号组合器组合第二放大信号和第三放大信号以产生输出信号。
    • 7. 发明授权
    • Digital signal processing circuit for generating output signal according to non-overlapping clock signals and input bit streams and related wireless communication transmitters
    • 数字信号处理电路,用于根据不重叠的时钟信号和输入比特流以及相关的无线通信发射机产生输出信号
    • US08705657B2
    • 2014-04-22
    • US13159385
    • 2011-06-13
    • Jie-Wei LaiYang-Chuan Chen
    • Jie-Wei LaiYang-Chuan Chen
    • H03C3/00
    • H04L27/0008H04L27/12H04L27/3427
    • A digital signal processing circuit includes a combining stage and an output stage. The combining stage is arranged to receive a plurality of non-overlapping clock signals having a same frequency but different phases, receive a plurality of first input bit streams, and generate a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals. The output stage is arranged to generate an output according to the first output bit stream. A digital signal processing method includes: receiving a plurality of non-overlapping clock signals having a same frequency but different phases; receiving a plurality of first input bit streams; generating a first output bit stream by combining the first input bit streams according to the non-overlapping clock signals; and generating an output according to the first output bit stream.
    • 数字信号处理电路包括组合级和输出级。 组合级被布置为接收具有相同频率但不同相位的多个不重叠的时钟信号,接收多个第一输入比特流,并且通过根据非接收方式组合第一输入比特流来生成第一输出比特流, - 重叠的时钟信号。 输出级被布置成根据第一输出位流产生输出。 数字信号处理方法包括:接收具有相同频率但不同相位的多个非重叠时钟信号; 接收多个第一输入比特流; 通过根据所述非重叠时钟信号组合所述第一输入比特流来产生第一输出比特流; 以及根据第一输出比特流生成输出。
    • 8. 发明授权
    • Transformer-based circuit with compact and/or symmetrical layout design
    • 基于变压器的电路具有紧凑和/或对称的布局设计
    • US08665052B2
    • 2014-03-04
    • US12540358
    • 2009-08-12
    • Jie-Wei Lai
    • Jie-Wei Lai
    • H01F5/00H01F27/28
    • H01F27/2804H01F19/04
    • A transformer-based circuit has at least a first port and a plurality of second ports. The transformer-based circuit includes a first winding conductor and a plurality of second winding conductors. The first winding conductor is electrically connected to the first port, and has a plurality of sectors connected in series to thereby form a plurality of loops, where the loops are arranged in a concentric-like fashion. The second winding conductors are magnetically coupled to the first winding conductor; besides, the second winding conductors are electrically connected to the second ports, respectively. Overall layout patterns of the second winding conductors are identical to each other. The first winding conductor acts as one of a primary winding conductor and a secondary winding conductor, and each of the second winding conductors acts as the other of the primary winding conductor and the secondary winding conductor.
    • 基于变压器的电路至少具有第一端口和多个第二端口。 基于变压器的电路包括第一绕组导体和多个第二绕组导体。 第一绕组导体电连接到第一端口,并且具有串联连接的多个扇区,从而形成多个环,其中环以同心方式布置。 第二绕组导体磁耦合到第一绕组导体; 此外,第二绕组导体分别电连接到第二端口。 第二绕组导体的总布局图彼此相同。 第一绕组导体用作初级绕组导体和次级绕组导体之一,并且每个第二绕组导体用作初级绕组导体和次级绕组导体中的另一个。