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Integrated transformer

A technology that integrates transformers and windings, applied in the field of transformers, can solve problems such as consumption and large chip area

Active Publication Date: 2015-09-30
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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, minimize the area of ​​passive components, and optimize the characteristics of components at the same time , such as quality factor (quality factor, Q) and coupling coefficient (coupling coefficient, K), etc., is an important topic

Method used

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Embodiment Construction

[0016] Please refer to Figure 1A , Figure 1B and Figure 1C ,in Figure 1A is the pattern of the three metal layers of the integrated transformer according to an embodiment of the present invention, Figure 1B It is a top view and a bottom view of an integrated transformer according to an embodiment of the present invention, and Figure 1C It is a side view of an integrated transformer according to an embodiment of the present invention. The integrated transformer of this embodiment can be applied to, for example, a transformer (transformer) or a balanced / unbalanced transformer (balun) in a radio frequency chip.

[0017] For the integrated transformer in this embodiment, please refer to Figure 1A , the integrated transformer is mainly composed of three metal layers, wherein the pattern of the first metal layer shown in the figure is a first winding (primary winding), and includes two input / output ports (port) 111 and a plurality of different Connected sections 112, 114, ...

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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.

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 (quality factor, Q) and coupling coefficient (coupling coefficient, K), etc., i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L23/522H01F27/28
Inventor 黄凯易颜孝璁简育生叶达勋
Owner REALTEK SEMICON CORP
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