Antenna module and mobile terminal
地域：
Singapore
摘要
An antenna module includes a first antenna and a second antenna. The first antenna forms multiple operating states. By switching the multiple operating states, the first antenna supports an LTE low frequency of 698-960 MHz and an LTE medium-high frequency of 1710-2690 MHz, and supports multi-carrier aggregation in the band. In each operating state, the first antenna also operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz, the second antenna operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz and a new TDD-LTE band of 5150-5925 MHz. The first antenna and the second antenna together form a 2×2 MIMO of 5G bands of 3300-3800 MHz and 4800-5000 MHz. The antenna module provided by the disclosure has better communication performance.
說(shuō)明書(shū)
The present disclosure relates to the field of antenna technologies, and in particular, to an antenna module and a mobile terminal.
The fifth-generation mobile communication is drawing near. 5G time of China's three major operators has also been determined. The Sub 6G bands of 3.3-3.6 GHz and 4.8-5 GHz band in the 5G released by the Ministry of Industry and Information Technology of China will be used in antenna bands of mobile phones. Mobile phone MIMO antenna designs in the future 5G era will definitely need to cover these bands. In addition to considering the design of antenna bands, a hardware layout of multi-carrier aggregation needs to be considered as well. Regarding to the concern about how the antenna should be designed to support use of multi-carrier aggregation (CA), bandwidth is a difficult point in design. The low frequency band of the mobile phone antenna in the 4G era is 698-960 MHz and it is required to be changed to 617 MHz-960 MHz in the 5G era, while for the medium-high frequency band, Sub 6G bands need to be added in addition to an original band of 1710 MHz-2690 MHz, which also means that an antenna bandwidth should be wide enough when so many bands, as well as use of multi-carrier aggregation (CA), need to be considered. However, in view of today's popular full-screen mobile phone environment, environment and space of antennas themselves are poor, and most of them need to match switching of tunable devices to be used for frequency expanding. Moreover, simultaneous use of MIMO and CA needs to be considered in certain bands, which is bound to increase the difficulty of antenna design.
Therefore, it is necessary to provide a new antenna module to solve the above problems.
權(quán)利要求
What is claimed is:1. An antenna module, comprising:a first antenna, the first antenna comprising a tuning switch and an adjustable capacitor and configured to be controlled by the tuning switch and the adjustable capacitor to form a plurality of operations states, and by switching between the plurality of operating states, the first antenna supporting an LTE low frequency of 698-960 MHz and an LTE medium-high frequency of 1710-2690 MHz and supporting multi-carrier aggregation, and a second antenna, wherein in each of the plurality of operating states, the first antenna further operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz, the second antenna operates in 5G bands of 3300-3800 MHz and 4800-5000 MHz and a new TDD-LTE band of 5150-5925 MHz, and wherein the first antenna and the second antenna together form a 2×2 MIMO of 5G bands of 3300-3800 MHz and 4800-5000 MHz. 2. The antenna module as described in claim 1 , wherein the antenna module is applied to a mobile terminal, and the mobile terminal comprises a metal frame, a main board received in the metal frame, and a plastic bracket that is provided on and covering the main board;the metal frame comprises two middle frames arranged opposite to each other and a bottom frame connecting the two middle frames, the bottom frame is provided with a first slit and a second slit, the first slit and the second slit divide the bottom frame into a main frame located in a middle position and a left frame and a right frame that are respectively provided on two sides of the main frame; the antenna module comprises a first feeding point, a second feeding point, a first ground point, a second ground point, the adjustable capacitor and the tuning switch that are provided on the main board, and a first antenna pattern and a second antenna pattern that are provided on a surface of the plastic bracket facing away from the main board; a first radiation portion comprises the main frame, the first antenna pattern and the second antenna wiring, one end of the first antenna pattern is connected to the first feeding point and the other end thereof is connected to the main frame, the main frame is connected to the first ground point through the tuning switch, one end of the second antenna pattern is connected to the main frame and the other end thereof is connected to the second ground point through the adjustable capacitor, to form a first antenna; a second radiation portion is the right frame, the second radiation portion is grounded through the middle frame connected thereto, and the second feeding point is connected to the second radiation portion, to form a second antenna. 3. The antenna module as described in claim 2 , wherein the first antenna pattern is connected at a first position of the main frame, the second feeding point is connected at a second position of the right frame, and the first position and the second position are both provided close to the second slit. 4. The antenna module as described in claim 3 , wherein the first ground point is connected at a third position of the main frame, the second antenna pattern is connected at a fourth position of the main frame, the mobile terminal further comprises a USB module, the third position and the fourth position are respectively provided on two sides of the USB module, and the third position is located between the USB module and the first position. 5. The antenna module as described in claim 2 , wherein the tuning switch is provided with a first inductor-connected state, a second inductor-connected state, a third inductor-connected state, and an open-circuit state, and when the tuning switch is in different operating states, the first radiation portion is electrically connected to the first ground point or electrically isolated from the first ground point by one of a first inductor, a second inductor and a third inductor. 6. The antenna module as described in claim 2 , wherein the first feeding point and the second ground point are provided on a surface of a circuit board facing towards the plastic bracket, and the antenna module further comprises a first elastic piece provided on a surface of the circuit board facing towards the plastic bracket and connected to the first feeding point and a second elastic piece connected to the adjustable capacitor. 7. The antenna module as described in claim 6 , further comprising a third elastic piece and a fourth elastic piece that abut against the main frame, and a fifth elastic piece abutting against the right frame, the main frame is connected to the first antenna pattern through the third elastic piece, the main frame is connected to the second antenna pattern through the fourth elastic piece, and the right frame is connected to the second feeding point through the fifth elastic piece. 8. The antenna module as described in claim 6 , wherein the first ground point and the second feeding point are provided on a surface of the circuit board facing away from the plastic bracket. 9. The antenna module as described in claim 2 , wherein the first antenna pattern and the second antenna pattern are lasered on a surface of the plastic support facing away from the main board by a laser direct structuring (LDS) process. 10. A mobile terminal, comprising the antenna module as described in claim 1 . 11. The mobile terminal as described in claim 10 , wherein the antenna module is applied to a mobile terminal, and the mobile terminal comprises a metal frame, a main board received in the metal frame, and a plastic bracket that is provided on and covering the main board;the metal frame comprises two middle frames arranged opposite to each other and a bottom frame connecting the two middle frames, the bottom frame is provided with a first slit and a second slit, the first slit and the second slit divide the bottom frame into a main frame located in a middle position and a left frame and a right frame that are respectively provided on two sides of the main frame; the antenna module comprises a first feeding point, a second feeding point, a first ground point, a second ground point, the adjustable capacitor and the tuning switch that are provided on the main board, and a first antenna pattern and a second antenna pattern that are provided on a surface of the plastic bracket facing away from the main board; a first radiation portion comprises the main frame, the first antenna pattern and the second antenna wiring, one end of the first antenna pattern is connected to the first feeding point and the other end thereof is connected to the main frame, the main frame is connected to the first ground point through the tuning switch, one end of the second antenna pattern is connected to the main frame and the other end thereof is connected to the second ground point through the adjustable capacitor, to form a first antenna; a second radiation portion is the right frame, the second radiation portion is grounded through the middle frame connected thereto, and the second feeding point is connected to the second radiation portion, to form a second antenna. 12. The mobile terminal as described in claim 11 , wherein the first antenna pattern is connected at a first position of the main frame, the second feeding point is connected at a second position of the right frame, and the first position and the second position are both provided close to the second slit. 13. The mobile terminal as described in claim 12 , wherein the first ground point is connected at a third position of the main frame, the second antenna pattern is connected at a fourth position of the main frame, the mobile terminal further comprises a USB module, the third position and the fourth position are respectively provided on two sides of the USB module, and the third position is located between the USB module and the first position. 14. The mobile terminal as described in claim 11 , wherein the tuning switch is provided with a first inductor-connected state, a second inductor-connected state, a third inductor-connected state, and an open-circuit state, and when the tuning switch is in different operating states, the first radiation portion is electrically connected to the first ground point or electrically isolated from the first ground point by one of a first inductor, a second inductor and a third inductor. 15. The mobile terminal as described in claim 11 , wherein the first feeding point and the second ground point are provided on a surface of a circuit board facing towards the plastic bracket, and the antenna module further comprises a first elastic piece provided on a surface of the circuit board facing towards the plastic bracket and connected to the first feeding point and a second elastic piece connected to the adjustable capacitor. 16. The mobile terminal as described in claim 15 , further comprising a third elastic piece and a fourth elastic piece that abut against the main frame, and a fifth elastic piece abutting against the right frame, the main frame is connected to the first antenna pattern through the third elastic piece, the main frame is connected to the second antenna pattern through the fourth elastic piece, and the right frame is connected to the second feeding point through the fifth elastic piece. 17. The mobile terminal as described in claim 15 , wherein the first ground point and the second feeding point are provided on a surface of the circuit board facing away from the plastic bracket. 18. The mobile terminal as described in claim 11 , wherein the first antenna pattern and the second antenna pattern are lasered on a surface of the plastic support facing away from the main board by a laser direct structuring (LDS) process.
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