Coupling structure for inductive device

Patent metadata

Field	Value
Publication number	US-9866173-B2
Application number	US-201615295298-A
Country	US
Kind code	B2
Filing date	Oct 17, 2016
Priority date	Nov 8, 2013
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A circuit includes a coupling structure and a first inductive device. The coupling structure includes two or more conductive loops and a set of conductive paths electrically connecting the two or more conductive loops. The first inductive device is magnetically coupled with a first conductive loop of the two or more conductive loops.

First claim

What is claimed is:

1. An integrated circuit device comprising:
a pulse generator;
a first driver electrically connected to the pulse generator;
a first oscillator with a first inductor electrically connected to the first driver;
a first conductive loop surrounding the first inductor, the first conductive loop being magnetically connected to the first inductor and electrically connected to a first conductive line and a second conductive line;
a second conductive loop electrically connected to the first conductive line and the second conductive line; and
a second oscillator with a second inductor electrically connected to the first driver and magnetically connected to the second conductive loop, wherein the second oscillator is surrounded by the second conductive loop, and wherein the first conductive line and the second conductive line are at least partially located directly between the first inductor and the second inductor.

2. The integrated circuit device of claim 1 , further comprising a second driver located between the first driver and the first oscillator.

3. The integrated circuit device of claim 1 , wherein the first oscillator and the second oscillator are part of an H-tree.

4. The integrated circuit device of claim 1 , wherein the first oscillator has a first port direction and the second oscillator has a second port direction, wherein the first port direction and the second port direction point to the same direction.

5. The integrated circuit device of claim 1 , wherein the first oscillator has a first port direction and the second oscillator has a second port direction, wherein the first port direction and the second port direction point to different directions.

6. The integrated circuit device of claim 1 , wherein the first oscillator comprises:
a first inductive device;
a first capacitive device; and
a first active feedback device.

7. The integrated circuit device of claim 6 , wherein the second oscillator comprises:
a second inductive device;
a second capacitive device; and
a second active feedback device.

8. The integrated circuit of claim 1 , further comprising a third conductive loop, wherein the third conductive loop overlies the second conductive loop.

9. The integrated circuit of claim 1 , further comprising a third conductive loop, wherein the third conductive loop encircles the second conductive loop.

10. An integrated circuit device comprising:
a first inductive device and a second inductive device separated by a first distance, wherein the first inductive device is part of a first oscillator and the second inductive device is part of a second oscillator separate from the first oscillator; and
a first continuous conductive material surrounding the first inductive device and the second inductive device while being electrically separated from both the first inductive device and the second inductive device, wherein the first continuous conductive material renders a mutual inductance between the first inductive device and the second inductive device independent of the first distance and at least a portion of the first continuous conductive material is located directly between the first inductive device and the second inductive device.

11. The integrated circuit device of claim 10 , wherein the first continuous conductive material comprises:
a first loop encircling the first inductive device; and
a second loop encircling the second inductive device.

12. The integrated circuit device of claim 11 , wherein the first continuous conductive material further comprises a third loop.

13. The integrated circuit device of claim 12 , further comprising a third inductive device, wherein the third loop encircles the third inductive device.

14. The integrated circuit device of claim 12 , wherein the first continuous conductive material further comprises a fourth loop.

15. The integrated circuit device of claim 14 , further comprising a fourth inductive device, wherein the fourth loop encircles the fourth inductive device.

16. The integrated circuit device of claim 10 , wherein the first distance is greater than at least 100 μm.

17. An integrated circuit device comprising:
a first inductive device within a first oscillator and a second inductive device within a second oscillator;
a first continuous conductive material electrically separated from both the first inductive device and the second inductive device, the first continuous conductive material comprising:
a first loop encircling the first inductive device; and
a second loop; and

a second continuous conductive material electrically separated from both the first inductive device and the second inductive device, the second continuous conductive material comprising:
a third loop encircling the second inductive device; and
a fourth loop magnetically coupled with the second loop, wherein the fourth loop encircles the second loop.

18. The integrated circuit device of claim 17 , wherein the fourth loop has a first end and a second end, the third loop has a third end and a fourth end, a first portion of the second continuous conductive material extends from the first end to the third end, a second portion of the second continuous conductive material extends from the second end to the fourth end, and the first portion of the second continuous conductive material crosses over the second portion of the second continuous conductive material.

19. The integrated circuit device of claim 17 , further comprising a third inductive device, wherein both the fourth loop and the second loop encircle the third inductive device.

20. The integrated circuit device of claim 17 , wherein the first inductive device and the second inductive device are separated by at least 100 μm.

Assignees

• Taiwan Semiconductor Mfg Co Ltd

Inventors

• Chen Huan-Neng
• Jou Chewn-Pu

Classifications

• H03L7/24

  using a reference signal directly applied to the generator · CPC title

• H03B5/1228

  the amplifier comprising one or more field effect transistors · CPC title

• H01F27/288

  Shielding · CPC title

• H03B5/1296

  the feedback circuit comprising a transformer · CPC title

• H03B5/1256

  the means comprising a variable inductance · CPC title