Coil and method for manufacturing the same

• US 8,368,498 B2
• Filed: 01/18/2012
• Issued: 02/05/2013
• Est. Priority Date: 01/21/2011
• Status: Active Grant

• Current Assignee: Anritsu Corporation
• Original Assignee: Anritsu Corporation
• Inventors: Saito, Makoto
• Primary Examiner(s): Musleh, Mohamad
• Assistant Examiner(s): Hinson, Ronald
• Application Number:
  US13/352,730
• Publication Number:
  US 20120188043A1
• Time in Patent Office: 384 Days
• Field of Search: 336/57, 336/58, 336/105, 336/200, 336/206, 336/208
• US Class Current: 336/105
• CPC Class Codes: H01F 2005/006 with conical spiral form
• CPC Class Codes: H01F 2027/2814 with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets
• CPC Class Codes: H01F 41/046 structurally combined with ferromagnetic material
• CPC Class Codes: H01F 5/00 Coils superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00
• CPC Class Codes: Y10T 29/49073 by assembling coil and core

Abstract

[Task] There are provided a coil that is simple in structure and excellent in high frequency characteristics and a method for manufacturing the same.

[Means for Resolution] The coil includes a plurality of conductor patterns 11 formed at an interval from each other on a substrate 21, and metal wires 12 that electrically connect an end of one conductor pattern of conductor patterns adjacent to each other with an end of the other conductor pattern that is an end opposite to the end of the one conductor pattern. One or more spiral shapes are formed by two or more conductor patterns 11 and one or more metal wires 12. The coil includes a core material 13 that is arranged at least in a portion inside a space surrounded by one or more spiral shapes to cover the outer peripheries of the metal wires 12 at least over a predetermined range.

Claims

1. A coil comprising:

a plurality of conductor patterns formed at an interval from each other on a substrate, and metal wires that electrically connect an end of one conductor pattern of conductor patterns adjacent to each other with an end of the other conductor pattern that is an end opposite to the end of the one conductor pattern,

one or more spiral shapes being formed by two or more conductor patterns and one or more metal wires,

wherein the coil includes a core material that is arranged at least in a portion inside a space surrounded by the spiral shapes and covers the outer peripheries of the metal wires at least over a predetermined range.

2. The coil according to claim 1,

wherein the inductance of the conductor patterns, the inductance of the metal wires, or the inductance of the conductor patterns and the inductance of the metal wires change gradually.

3. The coil according to claim 1,

wherein the core material includes a thermosetting material loaded with a magnetic substance.

4. The coil according to claim 1,

wherein the core material includes a magnetic substance having characteristics as a radar absorbent material.

5. The coil according to claim 1,

wherein a film resistor is formed between the conductor patterns adjacent to each other.

6. The coil according to claim 2,

wherein the core material includes a thermosetting material loaded with a magnetic substance.

7. The coil according to claim 2,

wherein the core material includes a magnetic substance having characteristics as a radar absorbent material.

8. The coil according to claim 2,

wherein a film resistor is formed between the conductor patterns adjacent to each other.

9. The coil according to claim 6,

wherein the core material includes a magnetic substance having characteristics as a radar absorbent material.