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A Harmonic Suppression Method for Periodic Signals and Mobile Terminal

A mobile terminal and periodic technology, applied in electrical components, side tone elimination circuits, reducing electrical interference, etc., can solve the problems of poor radio frequency interference quality, poor radio frequency interference practicability, etc., to avoid duty cycle, improve quality, and improve The effect of practicality

Active Publication Date: 2019-09-27
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a harmonic suppression method for periodic signals and a mobile terminal to solve the problem of improving the quality of radio frequency interference by connecting inductors, magnetic beads, and parallel capacitors, and improving radio frequency interference by frequency hopping and adjusting duty cycles. The problem of poor usability

Method used

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  • A Harmonic Suppression Method for Periodic Signals and Mobile Terminal
  • A Harmonic Suppression Method for Periodic Signals and Mobile Terminal
  • A Harmonic Suppression Method for Periodic Signals and Mobile Terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 1 , shows a structural block diagram of a mobile terminal of the present invention.

[0035] In a specific implementation, the mobile terminal 100 may include a mobile phone, a tablet computer, a personal digital assistant, a wearable device (such as glasses, a watch, etc.) and the like.

[0036] The operating systems of these mobile terminals 100 may include Android (Android), IOS, Windows Phone, Windows, etc., which are not limited in this embodiment of the present invention.

[0037] In the embodiment of the present invention, the mobile terminal 100 may include a signal output circuit 110 , a controller 120 and a tunable filter circuit 130 .

[0038] The signal output circuit 110 is used for outputting periodic signals.

[0039] For example, the signal output circuit 110 may include a MIPI generator or a clock generator and the like, that is, the periodic signal may include a MIPI signal, a clock signal and the like.

[0040] In a specific impleme...

Embodiment 2

[0073] refer to Figure 5 , shows a structural block diagram of another mobile terminal of the present invention.

[0074] In a specific implementation, the mobile terminal 500 includes a signal output circuit 510 , a signal buffer 520 , a controller 530 , a connection switch 540 , a tunable filter circuit 550 , and a DC blocker 560 .

[0075] The signal output circuit 510 is used for outputting periodic signals.

[0076] The signal buffer 520, also called Buffer, can be connected in series with the signal output circuit 510, and is used for shaping the periodic signal.

[0077] In the embodiment of the present invention, such as Figure 6 As shown, the rising edge and falling edge of the signal 610 (such as a periodic signal) before shaping processing are relatively slow, and the rising edge and falling edge of the signal 620 (such as a periodic signal) after shaping processing are relatively steep.

[0078] In the embodiment of the present invention, the controller 530 ma...

Embodiment 3

[0098] refer to Figure 7 , shows a flow chart of the steps of an embodiment of a method for suppressing harmonics of a periodic signal according to the present invention, which can be applied in a mobile terminal. The mobile terminal includes a signal output circuit, a controller, and a tunable filter circuit. Specifically, it may include the following step:

[0099] Step 701, the signal output circuit outputs a periodic signal.

[0100] Step 702, when the controller detects the periodic signal, determine the interference frequency band where the periodic signal interferes with the communication frequency band where the mobile terminal is located.

[0101] Step 703, outputting a filtered signal according to the interference frequency band.

[0102] Step 704, the tunable filter circuit filters the harmonic components in the interference frequency band in the periodic signal according to the filter signal.

[0103] In a specific implementation, the tunable filter circuit inc...

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Abstract

The embodiment of the invention provides a harmonic inhibition method for a periodic signal and a mobile terminal. The mobile terminal comprises a signal output circuit, a controller and a tunable filter circuit; the signal output circuit is used for outputting the periodic signal; the controller comprises an interference band determination module and a filter signal output module, wherein the interference band determination module is used for determining an interference band where the periodic signal causes interference to a communication band where the mobile terminal is located when the periodic signal is detected, and the filter signal output module is used for outputting a filter signal according to the interference band; the tunable filter circuit is used for filtering harmonic components, located in the interference band, in the periodic signal according to the filter signal. Accordingly, radio-frequency interference is improved to the maximum limit, minimum influences are generated on the signal edge, the radio-frequency interference improvement quality is improved, frequency adjustment and signal duty ratio adjustment are avoided, and the practicability of radio-frequency interference improvement is greatly improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a harmonic suppression method for periodic signals and a mobile terminal. Background technique [0002] With the development of mobile communication technology, mobile terminals have become an indispensable part of people's lives, enabling barrier-free calls anytime and anywhere, and many commonly used functions included in mobile terminals bring convenience to people's lives. [0003] In a mobile terminal, signal frequency multiplication such as MIPI (Mobile Industry Processor Interface, mobile industry processor interface) or a clock is likely to cause radio frequency interference, resulting in a decrease in communication quality. [0004] At present, in mobile terminals, inductors or magnetic beads are usually connected in series, and capacitors are connected in parallel. Series inductors or magnetic beads can contain high-frequency passage, and parallel capacitors will...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B15/02H04M1/58
Inventor 李文剑
Owner VIVO MOBILE COMM CO LTD