Integrated inductor structure and integrated transformer structure

Abstract

The invention discloses an integrated inductor structure and an integrated transformer structure, and the integrated inductor structure comprises a first spiral coil, a second spiral coil, and a connection line segment. The first spiral coil comprises a plurality of metal line segments and a bridging line segment, and is provided with a first end point, a second end point, a third end point, and a fourth end point, wherein the bridging line segment and the metal line segment are located at different layers, and the bridging line segment is used for connecting the metal line segment. The second spiral coil is provided with a fifth end point and a sixth end point. The connection line segment is connected with the third and fifth end points, and the fourth and sixth end points. The integrated inductor structure takes the first and second end points as the input end and the output end, and the first end point and the third end point are located on a first imaginary line. The first imaginary line passes through the central area of a range surrounded by the first spiral coil, and the bridging line segment and the central area of the range are located on a second imaginary line.

Description

technical field [0001] The invention relates to an integrated inductance structure and an integrated transformer structure, in particular to an 8-shaped integrated inductance and an integrated transformer with high symmetry. Background technique [0002] Inductors and transformers are important components used in radio frequency integrated circuits to achieve single-ended to differential signal conversion, signal coupling, impedance matching and other functions. With the development of integrated circuits to System on Chip (SoC), integrated inductors (integrated Inductor) and integrated transformer (integrated transformer) have gradually replaced traditional discrete components, and are widely used in radio frequency integrated circuits. However, inductors and transformers in integrated circuits often occupy a large amount of chip area. Therefore, how to reduce the area of ​​inductors and transformers in integrated circuits while maintaining the characteristics of components...

AI Technical Summary

Problems solved by technology

The disadvantage of this figure-eight integrated inductor 100 is that the symmetry of the helical coils 110 and 120 itself is not good, so that the quality factor and inductance value of the figure-eight integrated inductor 100 cannot be improved; moreover, the figure-eight integrated inductor 100 The two ends 111 and 121 are far away (more obvious when the number of turns of the helical coil is large), which is not conducive to coupling with the differential components in the integrated circuit

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