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A phase shift control method and device

A technology of phase shift control and digital control, which is applied in the electronic field and can solve problems such as linear degradation

Active Publication Date: 2019-01-04
MEDIATEK INC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

For example, since the operation of the conventional phase interpolator is limited by the specific RC slew rate, the conventional phase interpolator cannot be used to operate in a wide frequency range and the conventional phase interpolator may suffers from linear degradations such as Differential Nonlinearity (DNL) and Integral Nonlinearity (INL)

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  • A phase shift control method and device
  • A phase shift control method and device
  • A phase shift control method and device

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Embodiment Construction

[0024] The following descriptions are preferred embodiments for implementing the present invention. The following examples are only used to illustrate the technical characteristics of the present invention, and are not intended to limit the scope of the present invention. Certain terms are used throughout the specification and claims that follow to refer to particular elements. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for the difference. The terms "element", "system" and "apparatus" used in the present invention may be a computer-related entity, where the computer may be hardware, software, or a combination of hardware and software. The terms "comprising" and "including" mentioned in the following description and claims are open ter...

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Abstract

A method for performing phase shift control in an electronic device and an associated apparatus are provided, where the method includes: obtaining a set of clock signals corresponding to a set of phases, wherein any two phases of the set of phases are different from each other; and controlling a phase shift of an output signal of an oscillator by selectively mixing the set of clock signals into the oscillator according to a set of digital weighting control signals, wherein the phase shift corresponds to the set of digital weighting control signals, and the set of digital weighting control signals carries a set of digital weightings for selectively mixing the set of clock signals. More particularly, the method may include: selectively mixing the set of clock signals into a specific stage of a plurality of stages of the oscillator according to the set of digital weighting control signals.

Description

technical field [0001] The present invention relates to the field of electronic technology, and more particularly, to a phase shift control method and device. Background technique [0002] In the prior art, a traditional phase interpolator (phase interpolator) can be used to perform (perform) phase interpolation (phase interpolation) to generate an interpolation signal (interpolation signal), wherein the final phase (resultant phase) of the interpolation signal is located at two between known phases. However, there may be some problems with the existing technology. For example, since the operation of the conventional phase interpolator is limited by the specific RC slew rate, the conventional phase interpolator cannot be used to operate in a wide frequency range and the conventional phase interpolator may suffers from linear degradations such as Differential Nonlinearity (DNL) and Integral Nonlinearity (INL). Examples of the wide frequency range mentioned above may includ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/099
CPCH03K5/131H03K3/0322H03K2005/00052H03K2005/00058
Inventor 骆彦彬陈柏均吴克中
Owner MEDIATEK INC
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