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Phase noise optimization device and method

A phase noise and optimization device technology, applied to the automatic control of power, electrical components, etc., can solve the problems that the FMCW structure cannot be applied, and cannot be used as the optimal judgment standard, so as to improve the detection distance and position accuracy, and improve the receiving sensitivity And the effect of angular resolution and wide field of view

Active Publication Date: 2019-02-05
HYUNDAI MOBIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, considering the phase noise influence of each element constituting the PLL, this method cannot be used as an optimization criterion in an actual system
[0014] In addition, the disclosed methods cannot be applied to FMCW structures whose frequencies change rapidly with time, such as vehicle radars.

Method used

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  • Phase noise optimization device and method

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Embodiment Construction

[0081] The present invention can realize various modifications and has various embodiments. Therefore, the specific embodiments are illustrated in the drawings to illustrate the present invention in detail. However, this is not to limit the present invention to a specific embodiment, but should be understood to include all changes, equivalents, and substitutes that fall within the idea and technical scope of the present invention.

[0082] Similar reference signs are applied to similar constituent elements when describing each drawing.

[0083] The terms 1st, 2nd, etc. can be used to describe various constituent elements, but the constituent elements are not limited to the terms. The purpose of the terms is only to distinguish one element from other elements.

[0084] For example, without departing from the scope of rights of the present invention, the first constituent element may be named as the second constituent element, and similarly, the second constituent element may also be ...

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Abstract

The present invention relates to a digital PLL (Phase Locked Loop) technology, and more particularly, to set the variable type PLL (Phase Locked Loop) the loop filter is maintained on the environment Apparatus and method for changing the phase noise optimization. According to the present invention, constituting a variable type PLL (Phase Locked Loop) the loop filter, so that by optimizing the phase noise characteristics, improved reception sensitivity radar angular resolution and applicable.

Description

Technical field [0001] The present invention relates to a digital PLL (Phase Locked Loop) technology. More specifically, a loop filter of a variable type PLL (Phase Locked Loop) is provided to maintain phase noise to environmental changes. Optimized device and method. [0002] In particular, the phase noise optimization device and method of the present invention is to minimize the output signal jitter, to reduce the phase error between the two signals (reference signal / feedback signal), and to increase the PFD (Phase Frequency Detector) And the loop filter bandwidth is variable. Background technique [0003] figure 1 The figure shows the structure of a general digital PLL. Reference figure 1 , Digital PLL (Phase Locked Loop) includes adaptive PFD (Phase Frequency Detector) 110, adaptive loop filter 120, iDAC (current Digital-to-Analog Converter) The device) 130, the ICO (current Controlled Oscillator) 140, the divider 150, and so on. [0004] The adaptive PFD110 receives the refe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/18H03L7/099
CPCH03L7/06H03L7/085H03L7/093H03L7/099H03L7/10H03L2207/50
Inventor 裵晟瑚
Owner HYUNDAI MOBIS CO LTD