Tunable embedded inductor devices

• US 7,884,697 B2
• Filed: 02/26/2008
• Issued: 02/08/2011
• Est. Priority Date: 06/01/2007
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chin, Kuo-Chiang, Wei, Chang-Lin, Tsai, Cheng-Hua, Yu, Syun, Shyu, Chin-Sun
• Primary Examiner(s): Donovan; Lincoln
• Assistant Examiner(s): BAISA, JOSELITO SASIS
• Application Number:
  US12/037,622
• Publication Number:
  US 20080297298A1
• Time in Patent Office: 1,078 Days
• Field of Search: 336/200, 336/232, 336/223, 336/83
• US Class Current: 336/200
• CPC Class Codes: H01F 17/0006 Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K
• CPC Class Codes: H01F 2017/002 Details of via holes for interconnecting the layers
• CPC Class Codes: H01F 2021/125 Printed variable inductor with taps, e.g. for VCO
• CPC Class Codes: H01F 21/12 discontinuously variable, e.g. tapped
• CPC Class Codes: H01F 41/045 Trimming

Abstract

The invention provides tunable embedded high frequency inductor devices. The inductor device comprises a dielectric substrate. A first conductive line is disposed on a first surface of the dielectric substrate. A second conductive line is disposed on a second surface of the dielectric substrate. An interconnection is disposed perforating the dielectric substrate and connecting the first conductive line with the second conductive line. A coupling region is defined between the first and the second conductive lines. A conductive plug connecting the first conductive line and the second line is disposed in the coupling region. Alternatively, an opening is disposed in the first and second conductive lines to tune inductance of the inductor.

Claims

1. A tunable embedded inductor device, comprising:

a primary coil comprising;

a dielectric substrate;

a first conductive line disposed on a first surface of the dielectric substrate;

a second conductive line disposed on a second surface of the dielectric substrate, wherein the first and second conductive lines are overlapped in a coupling region; and

an interconnection perforating the dielectric substrate and connecting end sites of both the first conductive line and the second conductive line; and

at least one conductive plug for tuning inductance independent from the primary coil and interpolated at a non-end site of the first and second conductive lines of the primary coil,

wherein the least one conductive plug is within the coupling region and arranged to decrease inductance of the embedded inductor device.

2. The tunable embedded inductor device as claimed in claim 1, wherein the first conductive line and the second conductive line are conformal.

3. The tunable embedded inductor device as claimed in claim 2, wherein the first conductive line and the second conductive line are superimposed straight lines, superimposed serpentine lines, or superimposed spiral lines.

4. The tunable embedded inductor device as claimed in claim 3, wherein the superimposed spiral lines comprise rectangular spiral lines, circular spiral lines, and polygonal spiral lines.

5. The tunable embedded inductor device as claimed in claim 1, wherein the first conductive line and the second conductive line are different in shape and have at least one overlapped point therebetween.

6. The tunable embedded inductor device as claimed in claim 1, wherein the first conductive line and the second conductive line are intercrossed straight lines.

7. The tunable embedded inductor device as claimed in claim 6, wherein the first line is a straight line, and the second line is a serpentine line.

8. The tunable embedded inductor device as claimed in claim 6, wherein the first line is a straight line, and the second line is a spiral line.

9. The tunable embedded inductor device as claimed in claim 8, wherein the spiral line comprises a rectangular spiral line, a circular spiral line, and a polygonal spiral line.

10. The tunable embedded inductor device as claimed in claim 1, wherein the dielectric substrate comprises a polymer substrate, a ceramic substrate, or a semiconductor substrate, and wherein the dielectric substrate is a single-layered substrate composed of single material, or a multi-layered substrate composed of different materials.

11. The tunable embedded inductor device as claimed in claim 1, wherein the dielectric substrate comprises a circuit composed of at least one active device or passive device.

12. The tunable embedded inductor device as claimed in claim 1, wherein the shape of the least one conductive plug comprises a circle, a rectangle, a triangle or a polygon.

13. The tunable embedded inductor device as claimed in claim 1, wherein the least one conductive plug is composed of conductive materials or magnetic materials.

14. The tunable embedded inductor device as claimed in claim 1, wherein the primary coil is a multi-layered coil and the dielectric substrate is a multi-layered substrate, and the tunable embedded inductor device further comprises a third conductive line disposed on an inner layer'"'"'s surface of the multi-layered substrate,

wherein the interconnection comprises a first interconnection connecting end sites of both the first conductive line and the third conductive line;

and

a second interconnection connecting end sites of both the second conductive line and the third conductive line.

15. A tunable embedded inductor device, comprising:

a primary coil comprising;

a dielectric substrate;

a first conductive line disposed on a first surface of the dielectric substrate;

a second conductive line disposed on a second surface of the dielectric substrate, wherein the first and second conductive lines are overlapped in a coupling region; and

an interconnection perforating the dielectric substrate and connecting end sites of both the first conductive line and the second conductive line, wherein the first conductive line, the second conductive line and the interconnection constitute a circuit of the primary coil; and

at least one opening for tuning inductance independent from the primary coil and interpolated at a non-end site of the first and second conductive lines of the primary coil,

wherein the least one opening is within the coupling region and arranged to affect inductance of the embedded inductor device.

16. The tunable embedded inductor device as claimed in claim 15, wherein the first conductive line and the second conductive line are conformal.

17. The tunable embedded inductor device as claimed in claim 16, wherein the first conductive line and the second conductive line are superimposed straight lines, superimposed serpentine lines, or superimposed spiral lines.

18. The tunable embedded inductor device as claimed in claim 15, wherein the first conductive line and the second conductive line are different in shape and have at least one overlapped point therebetween.

19. The tunable embedded inductor device as claimed in claim 18, wherein the first conductive line and the second conductive line are intercrossed straight lines.

20. The tunable embedded inductor device as claimed in claim 18, wherein the first line is a straight line, and the second line is a serpentine line.

21. The tunable embedded inductor device as claimed in claim 18, wherein the first line is a straight line, and the second line is a spiral line.

22. The tunable embedded inductor device as claimed in claim 15, wherein the dielectric substrate comprises a polymer substrate, a ceramic substrate, a semiconductor substrate, or composites thereof.

23. The tunable embedded inductor device as claimed in claim 15, wherein the dielectric substrate comprises a circuit composed of at least one active device or passive device.

24. The tunable embedded inductor device as claimed in claim 15, wherein the primary coil is a multi-layered coil and the dielectric substrate is a multi-layered substrate, and the tunable embedded inductor device further comprises a third conductive line disposed on an inner layer'"'"'s surface of the multi-layered substrate,

wherein the interconnection comprises a first interconnection connecting end sites of both the first conductive line and the third conductive line;

and

a second interconnection connecting end sites of both the second conductive line and the third conductive line.