公开(公告)号：US20170104453A1

公开(公告)日：2017-04-13

申请号：US15146977

申请日：2016-05-05

Applicant: STMicroelectronics S.r.l.

Inventor： Lorenzo Iotti ,  Andrea Mazzanti ,  Andrea Pallotta ,  Francesco Svelto

IPC: H03B5/12

CPC classification number: H03B5/1206 ,  H03B1/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B27/00 ,  H03B2200/0076

Abstract: An oscillator has an oscillator output emitting an oscillating signal. The oscillator includes oscillator cores which each have a same circuit topology. A set of configuration switches couple a selected number of oscillator cores in parallel to generate the oscillating signal. The oscillator cores are arranged with a symmetry around a central axis. The planar inductors of the oscillator cores are arranged in a petal-like pattern with the planar inductors forming the petals of the petal-like pattern. The selected coupling of the oscillator cores in made in response to a selected phase noise threshold of a modulation device which receives the oscillating signal.

公开(公告)号：US09667192B2

公开(公告)日：2017-05-30

申请号：US15146977

申请日：2016-05-05

Applicant: STMicroelectronics S.r.l.

Inventor： Lorenzo Iotti ,  Andrea Mazzanti ,  Andrea Pallotta ,  Francesco Svelto

IPC: H03B5/12 ,  H03B27/00 ,  H03B1/00

CPC classification number: H03B5/1206 ,  H03B1/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B27/00 ,  H03B2200/0076

Abstract: An oscillator has an oscillator output emitting an oscillating signal. The oscillator includes oscillator cores which each have a same circuit topology. A set of configuration switches couple a selected number of oscillator cores in parallel to generate the oscillating signal. The oscillator cores are arranged with a symmetry around a central axis. The planar inductors of the oscillator cores are arranged in a petal-like pattern with the planar inductors forming the petals of the petal-like pattern. The selected coupling of the oscillator cores in made in response to a selected phase noise threshold of a modulation device which receives the oscillating signal.