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Method, communication device and processing ciircuit

A technology of inductance, capacitance and current, which is applied in the field of current adjustment mechanism, can solve problems such as not being able to meet low power supply design

Active Publication Date: 2020-07-07
AIROHA TECHNOLOGY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a current selection method cannot meet the needs of low power supply design

Method used

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  • Method, communication device and processing ciircuit
  • Method, communication device and processing ciircuit

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Embodiment Construction

[0013] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The purpose of this application is to disclose a technical solution / mechanism capable of adjusting / adjusting or reducing the current of a current source included in a digital voltage-controlled oscillator of a digital phase-locked loop, so as to set the current of the current source at Lower or minimum current value / level to minimize the power consumption of the digital voltage controlled oscillator or digital phase locked loop. In addition, the present application also aims to find a lower or minimum current level required by the digital voltage-controlled oscillator under the condition that the digital phase-locked loop can track / lock multiple channel frequencies and then set the current of the current source to set at a lower or minimum current level to reduce power dissipation.

[0015] figure 1 It is a s...

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Abstract

The invention discloses a method for adjusting a current source of a digital voltage-controlled oscillator, the digital voltage-controlled oscillator is provided with an inductance-capacitance resonant cavity, and the inductance-capacitance resonant cavity is provided with an adjustable capacitor bank. A method for tuning a current source of a digitally controlled oscillator having an LC tank having a tunable capacitor bank includes: determining a specific threshold according to a resolution of a bit number of the tunable capacitor bank; configuring a current flowing through the current sourceat a first current level; tuning the current flowing through the current source from the first current level to a lower current level; comparing a variation of a digital value of the tunable capacitor bank with the specific threshold, the digital value corresponding to the lower current level; and determining that a current level required by the digitally controlled oscillator is decreased down to the lower current level and then configuring the current flowing through the current source at the lower current level if the variation of the digital value is smaller than the specific threshold.

Description

technical field [0001] The present application relates to the field of current adjustment mechanism, and in particular to a method for adjusting a current source of a digital voltage-controlled oscillator, a communication electronic device and a processing circuit, wherein the method is used for a digital voltage-controlled oscillator based on a possible A digital value of an adjusted capacitor bank is used to fine tune a current source of a digital voltage controlled oscillator. Background technique [0002] Generally speaking, with the evolution of sub-micrometer CMOS process (sub-micrometer CMOS process), the traditional phase-locked loop is replaced by the digital phase-locked loop, in the digital phase-locked loop Among them, DCO (digitally controlled oscillator, digital voltage-controlled oscillator) and its decisive influence on phase noise and resolution are a crucial part of the digital phase-locked loop. The digital voltage-controlled oscillator is the function of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/04H03B5/12
CPCH03B5/04H03B5/1271H03B5/1212H03B5/1265H03B5/1228H03B5/1278H03L7/099H03L2207/50H04L7/0331H03L7/0991
Inventor 魏廉昇
Owner AIROHA TECHNOLOGY CORPORATION