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an inductive structure

A technology of inductance and unity, applied in the field of inductance structure, can solve the problems of increasing current consumption, reduce electromagnetic coupling and realize the effect of inductive isolation

Active Publication Date: 2022-04-08
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these solutions usually need to add additional circuits (such as power dividers, mixers, etc.) to achieve, which will increase the current consumption

Method used

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Embodiment Construction

[0025] As mentioned in the background art, the existing inductance design for reducing the electromagnetic coupling between VCO resonators needs to rely on additional circuits to increase the current consumption of the VCO.

[0026] On the other hand, some prior art solutions adopt a symmetrical design to realize the magnetic field cancellation of the inductance structure itself. For example, by designing the coils symmetrically about the horizontal axis and / or the vertical axis, the magnetic fields generated by the inductive structures tend to cancel.

[0027] However, the above-mentioned inductance structure based on the symmetrical design has strict requirements on the shape, so that the place where the inductance structure can be placed in the VCO is limited, which is not conducive to the miniaturization design of the overall structure of the VCO.

[0028] In order to solve the above-mentioned technical problems, an embodiment of the present invention provides an inductanc...

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Abstract

An inductance structure, comprising: a plurality of double-ring units, the plurality of double-ring units are distributed side by side on the same plane, each double-ring unit includes a first ring and a second ring wound by the same wire, the starting point of the wire is The starting end is located in the first ring, and the end of the wire is located in the second ring; wherein, the first rings in the adjacent double-ring units share the same wire segment, and the second rings in the adjacent double-ring units share the same wire segment. The solution provided by the invention can maximize inductance isolation and reduce electromagnetic coupling between VCO resonators.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to an inductance structure. Background technique [0002] Recent advances in wireless communication technology allow the entire radio frequency (Radio Frequency, RF for short) transceiver to be implemented on a single chip. However, implementing an entire RF transceiver on a single chip presents many challenges. [0003] For example, in a Wideband Code Division Multiple Access (W-CDMA) transceiver, a single-chip solution requires two RF Voltage-Controlled Oscillators (Voltage-Controlled Oscillator, VCO) running simultaneously on a single chip superior. Such an arrangement can create unwanted interactions between the two VCOs due to various types of mutual coupling mechanisms, which can lead to spurious receiver responses at unwanted frequencies in the transmit spectrum. The primary mutual coupling mechanism is usually basic electromagnetic (EM) coupling between resonators, ie, l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/34H01F27/28H01F27/00
CPCH01F27/34H01F27/28H01F27/006
Inventor 康斯坦丁·库兹涅佐夫袁晟丹尼尔·拉尔斯顿
Owner SPREADTRUM COMM (SHANGHAI) CO LTD