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Automatic frequency band calibration method and system

A calibration method and frequency band technology, applied in the direction of automatic power control, electrical components, etc., can solve problems such as reducing the working efficiency of the signal generation circuit

Active Publication Date: 2021-10-29
VIA ALLIANCE SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the selection of the frequency band is inaccurate, it will reduce the overall working efficiency of the signal generating circuit

Method used

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  • Automatic frequency band calibration method and system
  • Automatic frequency band calibration method and system
  • Automatic frequency band calibration method and system

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Embodiment Construction

[0010] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention are listed below and described in detail in conjunction with the accompanying drawings.

[0011] Figure 1A-1 , Figure 1A-2 It is a flowchart of an automatic frequency band calibration method 100 according to an embodiment of the present invention. The automatic frequency band calibration method 100 can be used in a signal generating circuit; the signal generating circuit has a plurality of frequency bands and can generate a required frequency in a selected frequency band. The automatic frequency band calibration method 100 includes step 101 and a frequency band selection procedure 100a, and starts from step 101 . In step 101, the automatic frequency band calibration method 100 performs a detection operation on the signal generating circuit, so as to obtain a first frequency of the signal generating circuit, wherein th...

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Abstract

The invention provides an automatic frequency band calibration method, which includes detecting a signal generating circuit to obtain the first frequency of the signal generating circuit in the current frequency band and executing a frequency band selection procedure. The frequency band selection procedure includes judging whether the first frequency and the second frequency of the previous frequency band contain the target frequency between the first frequency and the signal generating circuit; if the target frequency is included between the first frequency and the second frequency, the frequency band selection procedure also includes a frequency band determination program. The frequency band determination procedure includes obtaining the first and second frequency differences between the first and second frequencies and the target frequency; if the first frequency difference is smaller than the second frequency difference, the current frequency band is set as the operation of the signal generating circuit frequency band; if the first frequency difference is greater than the second frequency difference, the previous frequency band is set as the operating frequency band of the signal generating circuit.

Description

technical field [0001] The present invention relates to a frequency band calibration method, in particular to an automatic frequency band calibration method applied in multi-band technology. Background technique [0002] Generally speaking, the signal generating circuit can generate signals of different frequencies according to different setting values. Compared with the signal generating circuit supporting only a single frequency band, the signal generating circuit supporting multiple frequency bands can have more flexibility in circuit application and design. On the other hand, since a signal generating circuit with multiple frequency bands needs to select an appropriate frequency band to generate an output signal with a desired frequency during operation, the selection operation of the frequency band is very important for the signal generating circuit. If the selection of the frequency band is inaccurate, the overall working performance of the signal generating circuit w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/085H03L7/099H03L7/18
CPCH03L7/085H03L7/099H03L7/18
Inventor 周永奇
Owner VIA ALLIANCE SEMICON CO LTD