公开(公告)号：US08130053B2

公开(公告)日：2012-03-06

申请号：US12417446

申请日：2009-04-02

申请人： Fenghao Mu

发明人： Fenghao Mu

IPC分类号： H03G11/04 ,  H03H11/00

CPC分类号： H03J3/20 ,  H03J2200/10 ,  H04B1/18

摘要： A tuning method and circuit for an LC tank resonant circuit, including an inductor and a variable capacitor, are described. In a tuning mode, an RF input signal is applied to an input port of the circuit, and the RF output signal is monitored as a variable capacitor control input is varied. A peak output is detected, and the corresponding variable capacitor control input is stored, and applied to the variable capacitor in an operating mode. In one embodiment, the variable capacitor control input is adjusted for delay in the peak detection process. In one embodiment, the variable capacitor comprises a coarse capacitor and a fine capacitor; the tuning procedure is repeated for each capacitor; and both coarse and fine variable capacitor control inputs are stored and applied to the respective capacitors in operating mode.

摘要翻译： 描述了包括电感器和可变电容器的用于LC箱谐振电路的调谐方法和电路。 在调谐模式中，RF输入信号被施加到电路的输入端口，并且随着可变电容器控制输入的变化，RF输出信号被监视。 检测到峰值输出，并存储相应的可变电容器控制输入，并以工作模式将其施加到可变电容器。 在一个实施例中，针对峰值检测处理中的延迟来调节可变电容器控制输入。 在一个实施例中，可变电容器包括粗电容器和精细电容器; 每个电容重复调谐过程; 并且粗调和微调可变电容器控制输入都以操作模式存储并施加到相应的电容器。

公开(公告)号：US07599675B2

公开(公告)日：2009-10-06

申请号：US11609399

申请日：2006-12-12

申请人： Fenghao Mu ,  Andreas T. Mårtensson ,  Magnus Nilsson

发明人： Fenghao Mu ,  Andreas T. Mårtensson ,  Magnus Nilsson

IPC分类号： H04B1/06

CPC分类号： H04B1/18 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1483 ,  H03D7/165 ,  H03D7/166 ,  H03D2200/0023 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0088 ,  H03D2200/009

摘要： A frequency conversion receiver comprises a passive mixer, a Low-Noise Amplifier (LNA) and a balun. The low-noise amplifier generates an amplified single-ended signal responsive to a single-ended receiver input signal. The passive mixer generates a mixer output signal responsive to a differential mixer input signal and a four-phase local oscillator signal. The balun transforms the amplified singled-ended signal into the differential mixer input signal, the balun having a first winding coupled to an output of the low-noise amplifier and a second winding coupled to an input of the passive mixer, the second winding having more turns than the first winding. The turn ratio of the second winding to the first winding provides gain compensation to the low-noise amplifier, and in conjunction with the low-noise amplifier and the passive mixer, provides a desired gain to the receiver and linearity over a dynamic range of the receiver input signal.

摘要翻译： 变频接收机包括无源混频器，低噪声放大器（LNA）和平衡 - 不平衡转换器。 低噪声放大器响应于单端接收机输入信号产生放大的单端信号。 无源混频器响应差分混频器输入信号和四相本地振荡器信号产生混频器输出信号。 平衡不平衡变压器将放大的单端信号变换成差分混频器输入信号，平衡 - 不平衡转换器具有耦合到低噪声放大器的输出的第一绕组和耦合到无源混频器的输入的第二绕组，第二绕组具有更多 比第一个绕组转。 第二绕组与第一绕组的匝数比向低噪声放大器提供增益补偿，并且与低噪声放大器和无源混频器一起为接收器提供期望的增益，并且在动态范围内的线性度 接收机输入信号。

公开(公告)号：US06604203B1

公开(公告)日：2003-08-05

申请号：US09394376

申请日：1999-09-10

申请人： Fenghao Mu ,  Christer Svensson

发明人： Fenghao Mu ,  Christer Svensson

IPC分类号： H04L710

CPC分类号： H04L7/0083 ,  H04L7/0338

摘要： An arrangement and a method for synchronizing data to a local clock. The invention incorporates a self-tested self-synchronous two-phase input port, wherein a line or an element of parallel data is tested for data read failure using two different phases or edges of the local clock. If a data read failure is detected using one phase, the other of the two phases is selected for reading the data. The arrangement includes a data read device for reading parallel elements of the data stream using one of two different phases or edges of the local clock, a data read error detecting device arranged to sample at least one element of the data stream using the two different phases or edges of the local clock, and a decision making device.

摘要翻译： 一种用于将数据同步到本地时钟的装置和方法。 本发明结合了自测试的自同步两相输入端口，其中使用本地时钟的两个不同相位或边缘来测试并行数据的线路或元件的数据读取故障。 如果使用一个相位检测到数据读取失败，则选择两个相位中的另一个用于读取数据。 该装置包括用于使用本地时钟的两个不同相位或边缘中的一个来读取数据流的并行元件的数据读取装置，数据读取错误检测装置，被布置为使用两个不同的相位对数据流的至少一个元素进行采样 或本地时钟的边缘，以及决策设备。