Switching method of built-in antenna and exposed antenna of FM receiver as well as terminal thereof

Abstract

The invention provides a switching method of a built-in antenna and an exposed antenna of an FM receiver as well as a corresponding terminal thereof. The terminal comprises an FM receiver, the built-in antenna, the exposed antenna, a CPU, a detection module and an antenna switching module. The CPU detects that the exposed antenna is switched in when the terminal switches in the exposed antenna inthe on-state of the FM receiver; the detection module is used for detecting the RSSI of signals received by the built-in antenna and the exposed antenna; the selection module is used for comparing the RSSI values of the signals received by the built-in antenna and the exposed antenna, which are detected by the detection module. The antenna with the larger RSSI value is selected, and then the CPU controls the antenna switching module to switch in the selected antenna as the current receiving antenna. The switching method performs a switching between the built-in antenna and the exposed antennaaccording to the quality of the signals received by the built-in antenna and the exposed antenna from a station, can realize a seamless switching between the built-in antenna and the exposed antenna,and raises the receiving quality and the effect of the FM receiver.

Description

technical field [0001] The present invention relates to the field of antennas, in particular to a method for switching between a built-in antenna and an external antenna of a Frequency Modulation (FM) receiver and a corresponding terminal. Background technique [0002] With the advancement of science and technology and the improvement of people's living standards, people's requirements for entertainment are getting higher and higher. As a function of terminals, FM receivers are favored by more and more users. Most of the FM chips used in current terminals use earphones as FM receiving antennas, so that users must insert earphones if they want to listen to FM. If you want to switch to the loudspeaker to listen to FM, you must also plug in the earphones, which is very inconvenient for the user to operate. In order to meet the needs of users, there are a few manufacturers of FM chips that support the connection of built-in antennas, but experiments have shown that because the ...

AI Technical Summary

Problems solved by technology

Most of the FM chips used in current terminals use earphones as FM receiving antennas, so users must plug in earphones if they want to listen to FM.

If you want to switch to the speaker to listen to FM, you must also plug in the earphone, which makes the operation very inconvenient for the user

In order to meet the needs of users, there are a few manufacturers of FM chips that support the connection of built-in antennas, but experiments have shown that because the built-in antenna is on the motherboard, it will be shielded by the shell and related GSM (Global System for Mobile Communications, Global System for Mobile Communications) , WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) antenna signal interference and other electromagnetic interference, the performance of the built-in antenna is poorer than that of the earphone as an antenna

When the user uses the built-in antenna, although the sound can be played through the speaker without plugging in the earphone, when the user wants to use the earphone to listen to FM radio, the terminal still uses the built-in antenna to receive the radio, which greatly affects the reception performance of FM radio

The current FM chip manufacturers only provide one antenna connection method, and only one of the internal antenna or external earphone antenna can be used. If the internal antenna and external earphone antenna are directly connected together and then connected to the FM chip, will cause mutual interference between the antennas

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