公开(公告)号：EP3474442A2

公开(公告)日：2019-04-24

申请号：EP18201952.1

申请日：2018-10-23

Applicant: Analog Devices, Inc.

Inventor： Min, Byungmoo ,  Chiesa, John A.

IPC: H03B5/12 ,  H03B5/18

CPC classification number: H03B5/1265 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1841 ,  H03B5/1847 ,  H03B2200/0034 ,  H03B2200/004 ,  H03B2200/005 ,  H03B2200/009 ,  H03B2201/0266

Abstract: An LC tank circuit, such as an LC tank circuit of a step-tuned voltage controlled oscillator, includes a plurality of switched capacitor banks and one or more inductors. A first switched capacitor bank switch in response to a range of control signals used to control the VCO output across a range of frequencies. A second switched capacitor bank can switch in response to a subset of the range of control signals used to control the VCO output across a subset of the range of frequencies. The control scheme for the first and second switched capacitor banks can improves the linearity of changes in the frequency of the output signal of the VCO.

公开(公告)号：EP3474441A1

公开(公告)日：2019-04-24

申请号：EP18201951.3

申请日：2018-10-23

Applicant: Analog Devices, Inc.

Inventor： Min, Byungmoo ,  Chiesa, John A.

IPC: H03B5/12 ,  H03B5/18

Abstract: An LC tank circuit, such as an LC tank circuit of a step-tuned voltage controlled oscillator, includes an inductor and one or more capacitors. The inductor can be dog-bone shaped with a body, an extension and a chamfered joint to improve current distribution. The body and the extension can extend along different directions. The body can be narrower than the extension, and the extension can be sufficiently wide to interface with a plurality of switched capacitor circuits coupled to different parts of the extension.

公开(公告)号：EP3474442A3

公开(公告)日：2019-07-10

申请号：EP18201952.1

申请日：2018-10-23

Applicant: Analog Devices, Inc.

Inventor： Min, Byungmoo ,  Chiesa, John A.

IPC: H03B5/12 ,  H03B5/18

Abstract: An LC tank circuit, such as an LC tank circuit of a step-tuned voltage controlled oscillator, includes a plurality of switched capacitor banks and one or more inductors. A first switched capacitor bank switch in response to a range of control signals used to control the VCO output across a range of frequencies. A second switched capacitor bank can switch in response to a subset of the range of control signals used to control the VCO output across a subset of the range of frequencies. The control scheme for the first and second switched capacitor banks can improves the linearity of changes in the frequency of the output signal of the VCO.