Integrated spiral inductor configured for a reduced pinch effect

• US 20030229982A1
• Filed: 06/18/2002
• Published: 12/18/2003
• Est. Priority Date: 06/18/2002
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Nokia Corporation
• Inventors: Vilander, Ari, Hyvonen, Lassi, Svard, Mikael
• Granted Patent: US 6,922,128 B2
• Time in Patent Office: Days
• US Class Current: 29/602.1
• CPC Class Codes: H01F 17/0006 Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K
• CPC Class Codes: H01F 41/041 Printed circuit coils apparatus or processes for manufacturing printed circuits in general H05K3/00
• CPC Class Codes: H01F 5/003 Printed circuit coils
• CPC Class Codes: H01L 27/08 including only semiconductor components of a single kind
• CPC Class Codes: H01L 28/10 Inductors
• CPC Class Codes: Y10T 29/4902 Electromagnet, transformer or inductor
• CPC Class Codes: Y10T 29/49043 Depositing magnetic layer or coating
• CPC Class Codes: Y10T 29/49044 Plural magnetic deposition layers
• CPC Class Codes: Y10T 29/49046 with etching or machining of magnetic material
• CPC Class Codes: Y10T 29/49048 Machining magnetic material [e.g., grinding, etching, polishing]
• CPC Class Codes: Y10T 29/49069 Data storage inductor or core
• CPC Class Codes: Y10T 29/49073 by assembling coil and core
• CPC Class Codes: Y10T 29/49078 Laminated

Abstract

A spiral inductor (11) or component of a transformer, compatible with very large scale integrated processing, that achieves a higher Q value without occupying more space, by splitting each of one or more turns (13) into two or more crisscrossing or interwoven smaller-width turns (13a 13b).

Claims

4-1. A spiral inductor (11) made according to the method of claim 1.