High-frequency antenna and mobile terminal

Abstract

The utility model provides a high-frequency antenna and a mobile terminal. The high-frequency antenna comprises a first radiation unit, a second radiation unit, a third radiation unit, a fourth radiation unit, a first feeding point, a second feeding point and a grounding assembly. The first radiation unit and the second radiation unit are in coupling connection to form a first coupling gap, the third radiation unit and the fourth radiation unit are in coupling connection to form a second coupling gap, and the second radiation unit and the third radiation unit are in coupling connection to form a third coupling gap; the first feeding point is electrically connected with the second radiation unit, and the second feeding point is electrically connected with the fourth radiation unit. The high-frequency antenna provided by the utility model not only can effectively improve the overall radiation efficiency of the antenna, but also can effectively improve the overall isolation of the antenna.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a slot antenna and a MIMO antenna system. Background Art

[0002] 5G mobile communications technology requires antennas to perform both transmission and reception. Compared to the 4G era, some frequency bands feature higher carrier frequencies and wider bandwidths, requiring an exponential increase in the number of antennas. However, the increase in available area for antenna layout, such as in mobile phones, has been limited from the 4G era to the 5G era. This inevitably leads to closer distances between antennas, and thus poorer isolation compared to the 4G era. Currently, manufacturers employ staggered layouts to define different frequency bands for different antennas, assigning different frequencies to adjacent antennas to maximize isolation. This approach does not completely resolve the isolation issue. Furthermore, due to space constraints, the antenna's in-band efficiency is also poor.

[0003] In view of this, it is indeed necessary for the present invention to propose a new type of high-frequency antenna to solve the above technical problems. Summary of the Invention

[0004] An object of the present invention is to provide a high-frequency antenna that can not only effectively improve the radiation efficiency of the entire antenna, but also effectively improve the isolation of the entire antenna.

[0005] In order to solve the above technical problems, the present invention provides a high-frequency antenna, which includes a first radiating unit, a second radiating unit, a third radiating unit and a fourth radiating unit, a first feeding point, a second feeding point and a grounding component; the first radiating unit and the second radiating unit are coupled to form a first coupling gap, the third radiating unit and the fourth radiating unit are coupled to form a second coupling gap, and the second radiating unit and the third radiating unit are coupled to form a third coupling gap; the first feeding point is electrically connected to the second radiating unit, and the second feeding point is electrically connected to the fourth radiating unit.

[0006] As a further improvement of the present invention, the grounding component includes a first grounding point, a second grounding point, a third grounding point and a fourth grounding point, the first grounding point and the second grounding point are respectively arranged on both sides of the first feeding point, and the first grounding point and the second grounding point are respectively electrically connected to the first radiation unit and the second radiation unit, the third grounding point and the fourth grounding point are respectively arranged on both sides of the second feed, and the third grounding point and the fourth grounding point are respectively electrically connected to the third radiation unit and the fourth radiation unit.

[0007] As a further improvement of the present invention, the second radiation unit is configured as an IFA antenna, the first radiation unit is configured as a parasitic radiation unit coupled with the second radiation unit, and the first coupling gap is stepped.

[0008] As a further improvement of the present invention, the first radiating unit is configured as an IFA antenna, a monopole antenna, or a loop antenna.

[0009] As a further improvement of the present invention, the third radiation unit is coupled to the second radiation unit to form a third coupling gap, and the third coupling gap is rectangular.

[0010] As a further improvement of the present invention, the fourth radiation unit is configured as a single-pole antenna or a loop antenna.

[0011] As a further improvement of the present invention, the first radiation unit is configured as a radiation unit that generates intermediate frequency resonance, and the second radiation unit is configured as a radiation unit that generates high frequency resonance.

[0012] As a further improvement of the present invention, the third radiation unit is connected to the ground of the mainboard through the third grounding point, and the third radiation unit is coupled with the second radiation unit to generate high-frequency resonance.

[0013] As a further improvement of the present invention, the width of the second gap generated by the coupling of the third radiation unit and the fourth radiation unit is greater than the width of the first coupling gap.

[0014] An object of the present invention is to provide a mobile terminal to better utilize the above-mentioned high-frequency antenna.

[0015] In order to solve the above technical problem, the present invention provides a mobile terminal, which includes the above-mentioned high-frequency antenna.

[0016] The present invention provides a high-frequency antenna and a mobile terminal, wherein the high-frequency antenna includes a first radiating unit, a second radiating unit, a third radiating unit, and a fourth radiating unit, a first feeding point, a second feeding point, and a grounding component; the first radiating unit and the second radiating unit are coupled to form a first coupling slot, the third radiating unit and the fourth radiating unit are coupled to form a second coupling slot, and the second radiating unit and the third radiating unit are coupled to form a third coupling slot; the first feeding point is electrically connected to the second radiating unit, and the second feeding point is electrically connected to the fourth radiating unit. The high-frequency antenna of the utility model can not only effectively improve the overall radiation efficiency of the antenna, but also effectively improve the overall isolation of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the high-frequency antenna of the present utility model.

[0018] Figure 2 This is a simulation diagram of the isolation of the high-frequency antenna of the present utility model.

[0019] The descriptions of the reference numerals are as follows:

[0020] First radiation unit 1, second radiation unit 2, third radiation unit 3, fourth radiation unit 4, first coupling slot 5, second coupling slot 6, third coupling slot 7, first feeding point 20, second feeding point 40, first grounding point 10, second grounding point 21, third grounding point 30, fourth grounding point 41. DETAILED DESCRIPTION

[0021] The following describes the high-frequency antenna of the present invention in further detail, using the accompanying drawings and specific embodiments. It should be noted that the drawings are highly simplified and not precisely scaled, serving only to facilitate and clearly illustrate the embodiments of the present invention. Furthermore, the structures depicted in the drawings are often portions of actual structures. In particular, different drawings may use different scales, depending on the emphasis they require.

[0022] Mobile communications technology requires antennas to perform both transmission and reception. This, coupled with higher carrier frequencies and wider bandwidths compared to some frequency bands, requires an exponential increase in the number of antennas. However, the available area for antenna layout in mobile phones is limited, inevitably leading to closer spacing between antennas and worsening isolation compared to previous generations. Currently, manufacturers employ staggered layouts to define different frequency bands for different antennas, assigning different frequencies to adjacent antennas to ensure optimal isolation. However, this approach does not fully address the isolation issue, and due to space constraints, improving efficiency within the antenna band is extremely difficult.

[0023] like Figure 1 As shown, the present invention provides a high-frequency antenna, which includes a first radiating unit 1, a second radiating unit 2, a third radiating unit 3 and a fourth radiating unit 4, a first feeding point 20, a second feeding point 40 and a grounding component; the first radiating unit 1 and the second radiating unit 2 are coupled to form a first coupling slot 5, the third radiating unit 3 and the fourth radiating unit 4 are coupled to form a second coupling slot 6, and the second radiating unit 2 and the third radiating unit 3 are coupled to form a third coupling slot 7; the first feeding point 20 is electrically connected to the second radiating unit 2, and the second feeding point 40 is electrically connected to the fourth radiating unit 4.

[0024] With this configuration, the high-frequency antenna of the present invention not only effectively improves the overall radiation efficiency of the antenna, but also effectively improves the overall isolation of the antenna. In other words, the high-frequency antenna of the present invention improves the isolation between two adjacent antennas while also enhancing the in-band efficiency of adjacent antennas. This solution utilizes coupling between antenna elements to improve the isolation between adjacent antennas, thereby optimizing the overall efficiency of the antenna.

[0025] Furthermore, the grounding component includes a first grounding point 10, a second grounding point 21, a third grounding point 30, and a fourth grounding point 41. The first grounding point 10 and the second grounding point 21 are respectively arranged on both sides of the first feed point 20, and the first grounding point 10 and the second grounding point 21 are respectively electrically connected to the first radiating unit 1 and the second radiating unit 2. The third grounding point 30 and the fourth grounding point 41 are respectively arranged on both sides of the second feed, and the third grounding point 30 and the fourth grounding point 41 are respectively electrically connected to the third radiating unit 3 and the fourth radiating unit 4. The second radiating unit 2 is configured as an IFA antenna, the first radiating unit 1 is configured as a parasitic radiating unit coupled to the second radiating unit 2, and the first coupling gap 5 is stepped.

[0026] That is to say, the first coupling gap 5 generated by the coupling of the first radiating unit 1 and the second radiating unit 2 can generate resonance within the coupling region, thereby widening the overall radiation frequency band of the antenna.

[0027] Preferably, the first radiating unit 1 is configured as an IFA antenna, a monopole antenna, or a loop antenna. The third radiating unit 3 is coupled with the second radiating unit 2 to form a third coupling slot 7, and the third coupling slot 7 is rectangular. The fourth radiating unit 4 is configured as a monopole antenna or a loop antenna. The first radiating unit 1 is configured as a radiating unit that generates intermediate frequency resonance, and the second radiating unit 2 is configured as a radiating unit that generates high frequency resonance. The third radiating unit 3 is connected to the ground of the mainboard through the third grounding point 30, and the third radiating unit 3 is coupled with the second radiating unit 2 to generate high frequency resonance. The second slot generated by the coupling of the third radiating unit 3 and the fourth radiating unit 4 has a width greater than that of the first coupling slot. The first radiating unit 1 is a parasitic radiating unit, which can be an IFA antenna, a monopole antenna, or a loop antenna. The width of the first coupling gap 5 generated by the coupling of the first radiating unit 1 and the second radiating unit 2 is 0.1 mm ± 0.01, so that high frequency, medium high frequency and low frequency bands can be generated in the first radiating unit 1, the second radiating unit 2 and the coupling area, thereby effectively broadening the overall radiation frequency band of the antenna.

[0028] Combine Figure 2 As shown, the fourth radiation unit 4 in the high-frequency antenna of the present invention is preferably an IFA antenna in the form of a routing line to resonate at N77 or N78. The fourth radiation unit 4 can also be a monopole antenna or a ring antenna. Specifically, the radiation area where the first radiation unit 1 is located produces intermediate frequency resonance, and the radiation area where the second radiation unit 2 is located produces resonance at the high-frequency front end and the intermediate frequency end; the third radiation unit 3 can be configured as a suspended radiation unit, and the radiation area can also be connected to the ground of the mainboard through the feed pin. The main purpose is to couple with the second radiation unit 2 to produce high-frequency resonance, and to couple with the fourth radiation unit 4 to improve the radiation efficiency of N78, while being able to weaken the high-efficiency resonance generated by the fourth radiation unit 4 in the range of 2500MHz to 2690MHz, thereby improving the high-frequency efficiency and improving the isolation between the two antennas in the high-frequency frequency range of 2500 to 2700.

[0029] In summary, the present invention provides a high-frequency antenna and a mobile terminal, wherein the high-frequency antenna includes a first radiating unit 1, a second radiating unit 2, a third radiating unit 3, and a fourth radiating unit 4, a first feeding point 20, a second feeding point 40, and a grounding component; the first radiating unit 1 and the second radiating unit 2 are coupled to form a first coupling slot 5, the third radiating unit 3 and the fourth radiating unit 4 are coupled to form a second coupling slot 6, and the second radiating unit 2 and the third radiating unit 3 are coupled to form a third coupling slot 7; the first feeding point 20 is electrically connected to the second radiating unit 2, and the second feeding point 40 is electrically connected to the fourth radiating unit 4. The high-frequency antenna of the present invention can not only effectively improve the overall radiation efficiency of the antenna, but also effectively improve the overall isolation of the antenna.

[0030] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present invention is not limited to this.

[0031] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A high-frequency antenna, characterized in that: The high-frequency antenna includes a first radiation unit, a second radiation unit, a third radiation unit, a fourth radiation unit, a first feeding point, a second feeding point, and a grounding component; The first radiation unit and the second radiation unit are coupled to form a first coupling slot, the third radiation unit and the fourth radiation unit are coupled to form a second coupling slot, and the second radiation unit and the third radiation unit are coupled to form a third coupling slot; The first feeding point is electrically connected to the second radiating unit, and the second feeding point is electrically connected to the fourth radiating unit.

2. The high-frequency antenna according to claim 1, characterized in that: The grounding component includes a first grounding point, a second grounding point, a third grounding point and a fourth grounding point. The first grounding point and the second grounding point are respectively arranged on both sides of the first feeding point, and the first grounding point and the second grounding point are respectively electrically connected to the first radiation unit and the second radiation unit. The third grounding point and the fourth grounding point are respectively arranged on both sides of the second feeding, and the third grounding point and the fourth grounding point are respectively electrically connected to the third radiation unit and the fourth radiation unit.

3. The high-frequency antenna according to claim 2, characterized in that: The second radiation unit is configured as an IFA antenna, the first radiation unit is configured as a parasitic radiation unit coupled with the second radiation unit, and the first coupling gap is stepped.

4. The high-frequency antenna according to claim 3, characterized in that: The first radiating unit is configured as an IFA antenna, a monopole antenna, or a loop antenna.

5. The high-frequency antenna according to claim 4, characterized in that: The third radiation unit is coupled to the second radiation unit to form a third coupling slot, and the third coupling slot is rectangular.

6. The high-frequency antenna according to claim 5, characterized in that: The fourth radiation unit is configured as a monopole antenna or a loop antenna.

7. The high-frequency antenna according to claim 6, characterized in that: The first radiation unit is configured as a radiation unit that generates intermediate frequency resonance, and the second radiation unit is configured as a radiation unit that generates high frequency resonance.

8. The high-frequency antenna according to claim 7, characterized in that: The third radiation unit is connected to the ground of the mainboard through the third grounding point, and the third radiation unit is coupled with the second radiation unit to generate high-frequency resonance.

9. The high-frequency antenna according to claim 8, characterized in that: The second slot generated by coupling the third radiation unit and the fourth radiation unit has a width greater than that of the first coupling slot.

10. A mobile terminal, characterized in that: The mobile terminal comprises the high-frequency antenna according to any one of claims 1 to 9.

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