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1. 发明申请

WO2014006439A1 CAPACITIVE ARRANGEMENT FOR FREQUENCY SYNTHESIZERS 审中-公开
标题翻译：频率合成器的电容布置
公开(公告)号：WO2014006439A1
公开(公告)日：2014-01-09
申请号：PCT/IB2012/001562
申请日：2012-07-06
申请人： FREESCALE SEMICONDUCTOR, INC. , PAVAO MOREIRA, Cristian , DELBECQ, Dominique , VIGIER, Jean Stéphane
发明人： PAVAO MOREIRA, Cristian , DELBECQ, Dominique , VIGIER, Jean Stéphane
IPC分类号： H03L7/099
CPC分类号： H03L7/0997 , H03B1/00 , H03B5/08 , H03B5/1215 , H03B5/1228 , H03B5/1265 , H03K3/0315 , H03L7/099 , H03L7/0995 , H03L7/18
摘要： An electronic device has a capacitive arrangement (100) for controlling a frequency characteristic. The capacitive arrangement has varactor banks having a number of parallel coupled varactors and a control input for switching the respective varactors on or off. A main varactor bank (110) has N varactors and a series varactor bank (120) has A varactors, the main varactor bank being connected in series with the series varactor bank. A shunt varactor bank (130) of B varactors may be coupled to a ground reference and connected between the main varactor bank and the series varactor bank, When a varactor is switched in the main varactor bank, it provides an equivalent capacitance step size (or frequency step) smaller than size of a capacitance step when switching a single varactor on or off. According to the number of varactors selected in the shunt varactor, B, this frequency step can be made programmable. By the arrangement of unitary varactors a very small step size is achieved for providing a high resolution of frequency of a digitally controlled oscillator.
摘要翻译：电子设备具有用于控制频率特性的电容布置（100）。电容布置具有多个并联耦合变容二极管的变容二极管组和用于开启或关闭相应变容二极管的控制输入。主变容管组（110）具有N个变容二极管，串联变容二极管组（120）具有A变容二极管，主变容二极管组与串联变容二极管组串联。 B变容二极管的分路变容管组（130）可以耦合到接地参考并连接在主变容二极管组和串联变容二极管组之间。当变容二极管在主变容二极管组中切换时，它提供等效电容步长（或频率步长）比单个变容二极管开或关时小于电容步长的大小。根据在分流变容二极管中选择的变容二极管数量，B，该频率步进可编程。通过整体式变容二极管的布置，实现了非常小的步长以提供数字控制振荡器的高分辨率频率。

2. 发明申请

WO2014013289A1 CALIBRATION ARRANGEMENT FOR FREQUENCY SYNTHESIZERS 审中-公开
标题翻译：频率合成器的校准安排
公开(公告)号：WO2014013289A1
公开(公告)日：2014-01-23
申请号：PCT/IB2012/001660
申请日：2012-07-20
申请人： FREESCALE SEMICONDUCTOR, INC. , GAUTHIER, Laurent , DELBECQ, Dominique , VIGIER, Jean Stéphane
发明人： GAUTHIER, Laurent , DELBECQ, Dominique , VIGIER, Jean Stéphane
IPC分类号： H03L7/08 , H03L7/099
CPC分类号： H04L7/0331 , H03C3/0925 , H03L7/197
摘要： An electronic device has a calibration arrangement (120) for controlling a frequency characteristic of a PLL circuit having a phase comparator (112) having an output for generating a phase difference signal, a voltage controlled oscillator (1 15) and a divider (114). The divisor of the divider is programmable, and the oscillator is also directly modulated by an oscillator modulation signal. A modulation unit (130) has a modulation input for receiving a modulation signal and generates the oscillator modulation signal and the divisor such that modulation generates a predefined change of the output frequency and a change of the divisor proportional to said predefined change. The calibration arrangement receives the phase difference signal, and has a ripple detector (121 ) for providing a detector output signal by detecting a ripple on the phase difference signal correlated to edges in the modulation signal. A calibration control unit (122) adjusts the oscillator modulation signal based on the detector output signal such that the ripple is reduced.
摘要翻译：电子设备具有用于控制具有相位比较器（112）的PLL电路的频率特性的校准装置（120），所述相位比较器具有产生相位差信号的输出端，压控振荡器（115）和分频器（114）。除法器的除数是可编程的，并且振荡器也被振荡器调制信号直接调制。调制单元（130）具有用于接收调制信号的调制输入，并产生振荡器调制信号和除数，使得调制产生预定义的输出频率变化和与所述预定变化成比例的除数的变化。校准装置接收相位差信号，并且具有纹波检测器（121），用于通过检测与调制信号中的边缘相关的相位差信号上的纹波来提供检测器输出信号。校准控制单元（122）基于检测器输出信号来调整振荡器调制信号，使得纹波减小。

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