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Voltage-controlled oscillator based on on-chip continuously adjustable inductor

A technology of voltage-controlled oscillators and on-chip inductors, applied in power oscillators, electrical components, etc., can solve problems such as large chip area, complex circuits, and difficult implementation, and achieve low chip cost, reduce circuit design complexity, and reduce power consumption. advantage effect

Pending Publication Date: 2019-08-23
CHONGQING UNIV
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Problems solved by technology

[0020] Aiming at the above-mentioned shortcomings existing in the prior art, the present invention provides a voltage-controlled oscillator based on an on-chip continuously adjustable inductance, which can effectively overcome the complex circuit involved in changing the oscillation frequency by changing the capacitance value in the prior art, which is difficult to implement , and the defects that need to occupy a large chip area

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  • Voltage-controlled oscillator based on on-chip continuously adjustable inductor
  • Voltage-controlled oscillator based on on-chip continuously adjustable inductor
  • Voltage-controlled oscillator based on on-chip continuously adjustable inductor

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[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] On-chip continuously adjustable inductor-based voltage-controlled oscillators, such as Figure 5 As shown, there are on-chip inductors and low-resistance conductor rings with different metal layers and no contact with each other. The main structure of the on-chip inductor is ring-shaped and stacked in the middle.

[0041] The low-resistance conductor ri...

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Abstract

The invention relates to a voltage-controlled oscillator, in particular to a voltage-controlled oscillator based on an on-chip continuously adjustable inductor, which comprises an on-chip inductor anda low-resistance conductor ring which have different metal layers and are not in contact with each other, the main structure of the on-chip inductor is annular and is stacked in the middle, and the periphery of the on-chip inductor is provided with the low-resistance conductor ring. T he technical scheme provided by the invention can effectively overcome the defects that in the prior art, a circuit involved in changing the oscillation frequency by changing the capacitance value is complex and not easy to realize, and a large chip area needs to be occupied.

Description

technical field [0001] The invention relates to a voltage-controlled oscillator, in particular to a voltage-controlled oscillator based on on-chip continuously adjustable inductance. Background technique [0002] Among conventional on-chip voltage-controlled oscillators, the differential structure LC oscillator has the following advantages. First of all, the differential structure has stronger anti-interference ability to environmental noise, and the swing of the output signal is larger; second, since Gilbert double-balanced mixers are often used in today's RF systems, using a differential structure avoids a single-ended conversion It is a double-terminal conversion circuit, which reduces the complexity of the circuit. In recent years, differential oscillators using cross-coupled pair tubes as negative resistances have become the focus of research. The invention improves on the basis of the inductance capacitor oscillator with negative resistance differential structure. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/12
CPCH03B5/1256
Inventor 唐枋王忠杰徐梓丞
Owner CHONGQING UNIV
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