Antenna module, terminal, control method and device and storage medium
An antenna module for a terminal includes an antenna and a Radiated Spurious Emission (RSE) improvement component. The antenna includes a feed source, a ground point, and at least one radiation arm. The RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band, and includes a filter circuit configured to suppress the high order harmonics, and a control switch configured to control a working state of the filter circuit. The filter circuit can be a band stop filter circuit. The band stop filter circuit can be connected in series into the at least one target radiation arm of the antenna; or, a terminal of the band stop filter circuit is connected to the at least one target radiation arm of the antenna, and another terminal is connected to the feed source.
1. An antenna module, applied to a terminal, wherein the antenna module comprises an antenna and a Radiated Spurious Emission (RSE) improvement component;
wherein:
the antenna comprises a feed source, a ground point, and at least one radiation arm;
the RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band;
wherein the RSE improvement component comprises a filter circuit and a control switch, the filter circuit is configured to suppress the high order harmonics, and the control switch is configured to control a working state of the filter circuit;
wherein the filter circuit is a band stop filter circuit;
wherein the band stop filter circuit is connected in series into the at least one target radiation arm of the antenna; or, a terminal of the band stop filter circuit is connected to the at least one target radiation arm of the antenna, and another terminal of the band stop filter circuit is connected to the feed source; wherein the at least one target radiation arm is a radiation arm by which the antenna radiates the high order harmonics outward;
wherein the control switch is connected in parallel with the band stop filter circuit.
2. The antenna module according to claim 1 , wherein the antenna is formed on a flexible circuit, and the RSE improvement component is integrated in the flexible circuit.
3. A terminal, comprising a processing component and an antenna module, wherein the antenna module comprises an antenna and a Radiated Spurious Emission (RSE) improvement component;
wherein:
the antenna comprises a feed source, a ground point, and at least one radiation arm;
the RSE improvement component is coupled to the antenna for suppressing high order harmonics generated by the antenna when the antenna operates in a target frequency band;
the processing component is configured to control the RSE improvement component to be in a working state when the antenna operates in the target frequency band;
wherein the RSE improvement component comprises a filter circuit and a control switch, the filter circuit is configured to suppress the high order harmonics, and the control switch is configured to control a working state of the filter circuit;
wherein the filter circuit is a band stop filter circuit;
wherein the band stop filter circuit is connected in series into the at least one target radiation arm of the antenna; or, a terminal of the band stop filter circuit is connected to the at least one target radiation arm of the antenna, and another terminal of the band stop filter circuit is connected to the feed source; wherein the at least one target radiation arm is a radiation arm by which the antenna radiates the high order harmonics outward;
wherein the control switch is connected in parallel with the band stop filter circuit; and
wherein the processing component is configured to control the control switch to be turned off when the antenna operates in the target frequency band.
4. The terminal according to claim 3 , wherein the antenna is formed on a flexible circuit, and the RSE improvement component is integrated in the flexible circuit.
5. A control method, applied in a processing circuit of a terminal, wherein an antenna module of the terminal comprises an antenna and a Radiated Spurious Emission (RSE) improvement component;
wherein the method comprises:
obtaining a working frequency band of the antenna; and
controlling the RSE improvement component to be in a working state when the working frequency band of the antenna is a target frequency band;
wherein the RSE improvement component comprises a filter circuit and a control switch, the filter circuit is configured to suppress the high order harmonics, and the control switch is configured to control a working state of the filter circuit;
wherein the filter circuit is a band stop filter circuit;
wherein the band stop filter circuit is connected in series into the at least one target radiation arm of the antenna; or, a terminal of the band stop filter circuit is connected to the at least one target radiation arm of the antenna, and another terminal of the band stop filter circuit is connected to the feed source; wherein the at least one target radiation arm is a radiation arm by which the antenna radiates the high order harmonics outward;
wherein the control switch is connected in parallel with the band stop filter circuit.
6. The control method according to claim 5 , wherein the controlling the RSE improvement component to be in a working state comprises:
controlling the radio frequency switch to be turned on.
7. The control method according to claim 5 , wherein the antenna is formed on a flexible circuit, and the RSE improvement component is integrated in the flexible circuit.