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Temperature compensation method and auxiliary circuit, and voltage-controlled oscillation device

A temperature compensation and auxiliary circuit technology, applied in the direction of electrical components, automatic power control, etc., can solve the problem of increasing the complexity of the oscillation circuit of the voltage-controlled oscillator, reducing the maximum adjustable frequency range of the voltage-controlled oscillator, and the voltage-controlled oscillator Issues such as phase noise performance degradation

Inactive Publication Date: 2020-10-09
上海奥令科电子科技有限公司
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Problems solved by technology

[0004] Therefore, the prior art adopts a temperature compensation method for the voltage-controlled oscillator, such as adding a temperature compensation circuit to the voltage-controlled oscillator. However, the introduction of the temperature compensation circuit deteriorates the phase noise performance of the voltage-controlled oscillator and increases the voltage The complexity of the oscillation circuit of the controlled oscillator, while reducing the highest adjustable frequency range of the voltage controlled oscillator

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  • Temperature compensation method and auxiliary circuit, and voltage-controlled oscillation device
  • Temperature compensation method and auxiliary circuit, and voltage-controlled oscillation device
  • Temperature compensation method and auxiliary circuit, and voltage-controlled oscillation device

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Embodiment Construction

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations. In order to make the drawing concise, the parts related to the present invention are only schematically shown in each drawing, and they do not represent the actual structure of the product.

[0026] Temperature compensation is very important for voltage-controlled oscillators, because large temperature changes may cause the phase-locked loop (PLL) to lose lock, etc. In order to realize the temperature compensation of the voltage-controlled oscillator and improve the stability of the...

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Abstract

The invention provides a temperature compensation method, a temperature compensation auxiliary circuit and a voltage-controlled oscillation device, so as to improve the performance of a voltage-controlled oscillator. The temperature compensation auxiliary circuit comprises a conversion module and a voltage selection module, wherein an input end of the conversion module is used for inputting temperature information, and the conversion module is used for converting the temperature information into a control signal and outputting the control signal; and the voltage selection module is coupled tothe conversion module, selects a voltage under the action of the control signal output by the conversion module, and outputs the selected voltage.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a temperature compensation method, an auxiliary circuit, and a voltage-controlled oscillation device. Background technique [0002] A voltage controlled oscillator (VCO) is an oscillating circuit whose output frequency is controlled by an input voltage, and the output frequency of the VCO is a function of the input signal voltage. Voltage-controlled oscillators are widely used, such as generating clocks in various communication systems, oscillating circuits in various high-speed data transmission systems, and oscillating circuits in phase-locked loops (PLLs), etc. [0003] The voltage-controlled oscillator is an important circuit module in the above applications, and its main performance requirements are wide frequency adjustment range and low phase noise. In addition, the stability of the output frequency of the voltage-controlled oscillator as it changes with tempe...

Claims

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Application Information

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IPC IPC(8): H03L7/099
CPCH03L7/099H03L7/0995
Inventor 贾海珑王昕宇
Owner 上海奥令科电子科技有限公司
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