Inductive component

• US 20050052272A1
• Filed: 06/18/2004
• Published: 03/10/2005
• Est. Priority Date: 12/18/2001
• Status: Abandoned Application

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Tiebout, Marc
• Application Number:
  US10/871,867
• Publication Number:
  US 20050052272A1
• Time in Patent Office: Days
• US Class Current: 336/232
• CPC Class Codes: H01F 17/0006 Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K
• CPC Class Codes: H01F 2017/0046 with a conductive path having a bridge
• 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 27/40 Structural association with built-in electric component, e.g. fuse
• CPC Class Codes: H01L 23/5227 Inductive arrangements or effects of, or between, wiring layers other inductive arrangements H01L23/645
• CPC Class Codes: H01L 23/66 High-frequency adaptations
• CPC Class Codes: H01L 27/08 including only semiconductor components of a single kind
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

Inductive component including precisely one coil having a total inductance and a plurality of spiral turns which are realized in the form of conductor tracks having a conductor track width that tapers toward the center of the plurality of spiral turns, two tapping contacts at the coil, and a control circuit which is connected between the two tapping contacts and alters effective inductance of the coil.

Claims

1-17. -17. (canceled)

18. An inductive component comprising:

precisely one coil having a total inductance and a plurality of spiral turns which are realized in the form of conductor tracks having a conductor track width that tapers toward the center of the plurality of spiral turns;

two tapping contacts at the coil; and

a control circuit which is connected between the two tapping contacts and alters effective inductance of the coil.

19. The inductive component as claimed in claim 18, wherein the coil is arranged essentially in one plane.

20. The inductive component as claimed in claim 18, wherein the inductive component is integrated into an integrated circuit.

21. The inductive component as claimed in claim 18, wherein the coil has two end contacts.

22. The inductive component as claimed in claim 18, wherein the coil has an intermediate contact, as a result of which the coil represents a differential coil.

23. The inductive component as claimed in claim 22, wherein the intermediate contact is electrically coupled to a ground connection and the two end contacts are electrically coupled to an AC voltage connection.

24. The inductive component as claimed in claim 22, wherein the differential coil is a fully differential coil in which the intermediate contact is provided at the center of the coil and thus represents a center contact.

25. The inductive component as claimed in claim 22, wherein the turns of the differential coil are arranged such that they are essentially transposed with one another, thereby forming partial turns.

26. The inductive component as claimed in claim 25, wherein the two inner partial turns of the fully differential coil are electrically coupled to the two end contacts of the coil.

27. The inductive component as claimed in claim 21, wherein the control circuit has a switch element by means of which it is possible to alter the number of turns between the two tapping contacts of the coil, as a result of which it is possible to alter the effective inductance between the two tapping contacts in a stepwise manner.

28. The inductive component as claimed in claim 27, wherein the coil is shortened by means of the switch element in such a way that at least one outer turn of the coil can be disconnected.

29. The inductive component as claimed in claim 21, wherein the control circuit has a control element by means of which the effective inductance between the two tapping contacts of the coil are altered in a continuous manner in a control range.

30. The inductive component as claimed in claim 18, wherein the control circuit has at least one field-effect transistor.

31. The inductive component as claimed in claim 18, wherein the coil is integrated on a substrate.

32. The inductive component as claimed in claim 18, wherein the conductor tracks have a staggered conductor track width.

33. A voltage controlled oscillator (VCO) having an inductive component as claimed in claim 18.

34. An amplifier with an inductively controlled load having an inductive component as claimed in claim 18.