Integrated Transformer

An integrated transformer and winding technology, applied in the field of transformers, can solve the problems of large chip area, consumption, etc.
CN104952834BActive Publication Date: 2019-01-18REALTEK SEMICON CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
REALTEK SEMICON CORP
Publication Date
2019-01-18

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Abstract

The invention discloses an integrated transformer which comprises a first coiling, a second coiling and a plurality of bridging lines, wherein the first coiling is formed by a first metallic layer and has a plurality of disconnected sections, the second coiling is formed by a second metallic layer and has a plurality of disconnected sections, the bridging lines are formed by a third metallic layer. Some of the bridging lines connect the sections of the first coiling, so that the sections of the first coiling form a first inductor. Other bridging lines connect the sections of the second coiling, so that the sections of the second coiling form a second inductor.
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Description

technical field

[0001] The invention relates to a transformer, and mainly relates to an integrated transformer. Background technique

[0002] Transformers and balanced / unbalanced transformers (balun) are important components used in radio frequency integrated circuits to achieve single-ended to differential signal conversion, signal coupling, impedance matching and other functions. On Chip, SoC) development, integrated transformer (integrated transformer / balun) has gradually replaced traditional discrete components, and is widely used in radio frequency integrated circuits. However, passive components in integrated circuits, such as inductors and transformers, often consume a large amount of chip area. Therefore, how to simplify the number of passive components in integrated circuits and minimize the area of ​​passive components while optimizing component characteristics , such as quality factor (qualityfactor, Q) and coupling coefficient (coupling coefficient, K), etc., is...

Claims

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