公开(公告)号：US09054687B2

公开(公告)日：2015-06-09

申请号：US13954277

申请日：2013-07-30

Applicant: QUALCOMM Incorporated

Inventor： Ashok Swaminathan ,  Ian Galton

IPC: H03K3/282 ,  H03K3/354

CPC classification number: H03K3/354 ,  H03B5/24

Abstract: An oscillating circuit with linear gain is presented. The oscillating circuit may include a relaxation oscillator and a current compensation block. The relaxation oscillator includes a capacitor, a pair of resistors operative to deliver a first current to the capacitor, and a first current source adapted to generate the first current having a first predefined level. The current compensation block includes a second current source, and a pair of cross-coupled transistors coupled to the second current source and adapted to steer a current exceeding the first predefined level in the relaxation oscillator away from the capacitor and to the second current source. The proposed oscillating circuit generates an output signal which has a linear gain over a wide tuning range.

Abstract translation: 提出了一种具有线性增益的振荡电路。 振荡电路可以包括张弛振荡器和电流补偿模块。 张弛振荡器包括电容器，一对电阻器，用于向电容器传送第一电流;以及第一电流源，适于产生具有第一预定电平的第一电流。 电流补偿块包括第二电流源和耦合到第二电流源的一对交叉耦合晶体管，并且适于将稳定在振荡器中的第一预定电平的电流从电容器转移到第二电流源。 所提出的振荡电路产生在宽的调谐范围内具有线性增益的输出信号。

公开(公告)号：US09461657B2

公开(公告)日：2016-10-04

申请号：US14566847

申请日：2014-12-11

Applicant: QUALCOMM Incorporated

Inventor： Ian Galton

IPC: H03L7/093 ,  H03L7/197 ,  H03L7/187 ,  H03L7/099

CPC classification number: H03L7/093 ,  H03L7/0991 ,  H03L7/187 ,  H03L7/197

Abstract: Certain aspects of the present disclosure support a method and apparatus for foreground and background bandwidth calibration in a frequency-do-digital converter based phase-locked loop (FDC-PLL) device.

Abstract translation: 本公开的某些方面支持用于基于频率 - 数字转换器的锁相环（FDC-PLL）装置中的前景和背景带宽校准的方法和装置。

公开(公告)号：US20150035611A1

公开(公告)日：2015-02-05

申请号：US13954277

申请日：2013-07-30

Applicant: QUALCOMM Incorporated

Inventor： Ashok Swaminathan ,  Ian Galton

IPC: H03K3/354

CPC classification number: H03K3/354 ,  H03B5/24

Abstract: An oscillating circuit with linear gain is presented. The oscillating circuit may include a relaxation oscillator and a current compensation block. The relaxation oscillator includes a capacitor, a pair of resistors operative to deliver a first current to the capacitor, and a first current source adapted to generate the first current having a first predefined level. The current compensation block includes a second current source, and a pair of cross-coupled transistors coupled to the second current source and adapted to steer a current exceeding the first predefined level in the relaxation oscillator away from the capacitor and to the second current source. The proposed oscillating circuit generates an output signal which has a linear gain over a wide tuning range.

Abstract translation: 提出了一种具有线性增益的振荡电路。 振荡电路可以包括张弛振荡器和电流补偿模块。 张弛振荡器包括电容器，一对电阻器，用于向电容器传送第一电流;以及第一电流源，适于产生具有第一预定电平的第一电流。 电流补偿块包括第二电流源和耦合到第二电流源的一对交叉耦合晶体管，并且适于将稳定在振荡器中的第一预定电平的电流从电容器转移到第二电流源。 所提出的振荡电路产生在宽的调谐范围内具有线性增益的输出信号。