Low-orbit satellite antenna assembly for 5G mobile terminal

Abstract

The utility model provides a low-orbit satellite antenna assembly for a 5G mobile terminal, which comprises a transmitting antenna and a receiving antenna, the transmitting antenna and the receiving antenna are respectively arranged on the inner side of a metal frame of the 5G mobile terminal and are matched with each other, and the transmitting antenna and the receiving antenna are respectively and electrically connected with a main control circuit board in the 5G mobile terminal. The transmitting antenna is provided with a transmitting antenna ground point and a transmitting antenna feeding point used for leading out signals, the receiving antenna is provided with a receiving antenna ground point and a receiving antenna feeding point used for receiving signals, and the transmitting antenna ground point and the receiving antenna ground point are arranged at the left end and the right end of the bottom of a metal frame of the 5G mobile terminal respectively. The distance between the feeding point of the transmitting antenna and the ground point of the transmitting antenna is d1, the distance between the feeding point of the receiving antenna and the ground point of the receiving antenna is d2, d1 is larger than or equal to 10 mm and smaller than or equal to 35 mm, and d2 is larger than or equal to 10 mm and smaller than or equal to 35 mm. The beneficial effects of the utility model are that the antenna performance index requirement can be satisfied and human hand interference can be reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the field of communication technology, and in particular to a low-orbit satellite antenna assembly for a 5G mobile terminal. Background Art

[0002] Low-orbit satellite communications (LEO) utilizes low-orbit satellites for personal communications via handheld devices. These communications offer numerous advantages: The low altitude of the satellites reduces transmission latency and path loss, while a constellation of multiple satellites enables true global coverage and more efficient frequency reuse. Furthermore, technologies such as cellular communications, multiple access, spot beams, and frequency reuse provide the technical underpinnings for LEO satellite mobile communications. Consequently, LEO satellite communications are currently considered the newest and most promising form of satellite mobile communications.

[0003] With the popularization of fifth-generation mobile communication technology (5G) and low-orbit satellite communication technology, mobile terminal products equipped with low-orbit satellite communication systems have also experienced rapid development. Currently, the vast majority of mobile terminals on the market are equipped with fifth-generation mobile communication technology, which can greatly improve network download speeds and information transmission speeds. However, in some remote rural areas, remote scenic areas with few people, and uninhabited areas, the fifth-generation mobile communication technology has poor signal strength and is almost unusable, which is very inconvenient for some people. Mobile terminal products equipped with low-orbit satellite communication systems can solve this problem. Mobile terminal products equipped with low-orbit satellite communication systems can still transmit data even in remote rural areas, remote scenic areas with few people, and uninhabited areas, providing users with a better user experience.

[0004] In today's "involution" mobile terminal product market, mobile terminal products equipped with low-orbit satellite communication systems are more competitive than those without low-orbit satellite communication systems. The core of the low-orbit satellite communication system is the satellite communication antenna, and the performance indicators of the satellite communication antenna are very important. In order to meet people's communication needs, current 5G mobile terminal devices are usually equipped with multiple antennas and each antenna often has multiple frequency bands. In addition, since the current definition of mobile terminal device products is mainly thin and light and has a high screen-to-body ratio, it is very difficult to add satellite communication antennas to 5G mobile terminal devices. The design space for satellite communication antennas is very small, and the performance of satellite communication antennas will also be affected when users hold the tablet with their hands. For satellite communication antenna design, these factors are fatal. To meet the performance index requirements of satellite communication antennas (including total radiation efficiency and return loss), and to reduce the impact of users' hands on the performance of satellite communication antennas, a reasonable satellite communication antenna layout is particularly critical and directly affects the quality of user experience. Utility Model Content

[0005] In order to solve the problems in the prior art, the present invention provides a low-orbit satellite antenna assembly for 5G mobile terminals. By arranging a transmitting antenna and a receiving antenna that cooperate with each other in the 5G mobile terminal, the transmitting antenna and the receiving antenna have high maximum gain and good isolation, and the radiation directions of the transmitting antenna and the receiving antenna overlap, and the radiation direction is the most ideal radiation direction. It can achieve the goal of making the total radiation efficiency of the low-orbit satellite antenna assembly for 5G mobile terminals meet people's comprehensive needs, and at the same time, it also reduces the interference effect of the user's hands on the performance of the satellite communication antenna. The antenna assembly design and debugging time is short, and the user experience is good, which solves the problem in the prior art that the design performance index requirements of the satellite communication antenna of the 5G mobile terminal are difficult to achieve and the user's hands have an interference effect on the performance of the satellite communication antenna.

[0006] The utility model provides a low-orbit satellite antenna assembly for a 5G mobile terminal, including a transmitting antenna and a receiving antenna. The transmitting antenna and the receiving antenna are respectively arranged on the inner side of the metal frame of the 5G mobile terminal and cooperate with each other. The transmitting antenna and the receiving antenna are respectively electrically connected to the main control circuit board in the 5G mobile terminal. The transmitting antenna is arranged on the inner side of the bend on the lower left side of the metal frame of the 5G mobile terminal, and the receiving antenna is arranged on the inner side of the bend on the lower right side of the metal frame of the 5G mobile terminal. The radiation end of the transmitting antenna and the radiation end of the receiving antenna are symmetrically arranged on the left and right sides of the metal frame of the 5G mobile terminal. On the inner side and close to the bottom of the metal frame, the transmitting antenna is provided with a transmitting antenna return point and a transmitting antenna feeding point for leading out signals, and the receiving antenna is provided with a receiving antenna return point and a receiving antenna feeding point for receiving signals. The transmitting antenna return point and the receiving antenna return point are respectively arranged at the left and right ends of the bottom of the metal frame of the 5G mobile terminal. The distance between the transmitting antenna feeding point and the transmitting antenna return point is d1, and the distance between the receiving antenna feeding point and the receiving antenna return point is d2. The value range of d1 is 10mm≤d1≤35mm, and the value range of d2 is 10mm≤d2≤35mm.

[0007] The present invention is further improved in that the distance d1 between the transmitting antenna feeding point and the transmitting antenna return point is 22.5 mm.

[0008] The present invention is further improved in that the distance d2 between the receiving antenna feeding point and the receiving antenna return point is 15 mm.

[0009] The present invention is further improved in that the transmitting antenna as a whole has the properties of an inverted F antenna, and the length is selected to be 212.5 mm.

[0010] The present invention is further improved in that the receiving antenna as a whole has the properties of an inverted F antenna, and the length is selected to be 173 mm.

[0011] The present invention is further improved in that the transmitting antenna feeding point can be connected to a capacitor and an inductor.

[0012] The present invention is further improved in that the receiving antenna feeding point can be connected to a capacitor and an inductor.

[0013] The present utility model is further improved in that the transmitting antenna feeding point extends from the transmitting antenna to the interior of the 5G mobile terminal, and the transmitting antenna return point extends from the transmitting antenna to the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal.

[0014] The present utility model is further improved in that the receiving antenna feeding point extends from the receiving antenna to the interior of the 5G mobile terminal, and the receiving antenna return point extends from the receiving antenna to the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal.

[0015] The present invention is further improved so that the maximum gain lobe angle of the transmitting antenna and the maximum gain lobe angle of the receiving antenna overlap and are both directed upwards of the 5G mobile terminal.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: the present invention provides a low-orbit satellite antenna assembly for 5G mobile terminals. By arranging mutually coordinated transmitting antennas and receiving antennas in the 5G mobile terminal, the transmitting antenna and the receiving antenna have high maximum gain and good isolation, and the radiation directions of the transmitting antenna and the receiving antenna overlap, and the radiation direction is the most ideal radiation direction. It can achieve the goal of making the total radiation efficiency of the low-orbit satellite antenna assembly for 5G mobile terminals meet people's comprehensive needs, while also reducing the interference effect of the user's hands on the performance of the satellite communication antenna. The antenna assembly has a short design and debugging time, a good user experience, a simple structure, stability and reliability, and also reduces the antenna design cost, solving the problem in the existing technology that the design performance index requirements of the satellite communication antenna for 5G mobile terminals are difficult to achieve and the user's hands have an interference effect on the performance of the satellite communication antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a structural diagram of a low-orbit satellite antenna assembly for a 5G mobile terminal according to the utility model;

[0019] Figure 2 This is the return loss diagram of the transmitting antenna of the utility model;

[0020] Figure 3 This is the return loss diagram of the receiving antenna of the utility model;

[0021] Figure 4 This is the return loss diagram after the transmitting antenna of the utility model is connected to the capacitor and inductor;

[0022] Figure 5 This is the return loss diagram after the receiving antenna of the utility model is connected to the capacitor and inductor;

[0023] Figure 6 This is a diagram of the isolation between the transmitting antenna and the receiving antenna of the utility model;

[0024] Figure 7 This is the total free space gain diagram of the transmitting antenna of the utility model;

[0025] Figure 8 This is the total free space gain diagram of the receiving antenna of the utility model;

[0026] Figure 9 This is the total gain diagram of the double-handed mode of the transmitting antenna of the utility model;

[0027] Figure 10 This is the total gain diagram of the double-handed mode receiving antenna of the utility model;

[0028] Figure 11 Theta is the directional pattern of the transmitting antenna of the utility model = 90°1d;

[0029] Figure 12 This is the directional pattern of the receiving antenna Theta=90°1d of the present invention.

[0030] In the figure, 1-transmitting antenna, 11-transmitting antenna return point, 12-transmitting antenna feeding point, 2-receiving antenna, 21-receiving antenna feeding point, 22-receiving antenna return point. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0034] like Figure 1-8 As shown, the utility model provides a low-orbit satellite antenna assembly for a 5G mobile terminal, including a transmitting antenna 1 and a receiving antenna 2. The transmitting antenna 1 and the receiving antenna 2 are respectively arranged on the inner side of the metal frame of the 5G mobile terminal and cooperate with each other. The transmitting antenna 1 and the receiving antenna 2 are respectively electrically connected to the main control circuit board in the 5G mobile terminal. The transmitting antenna 1 is arranged on the inner side of the bend on the lower left side of the metal frame of the 5G mobile terminal, and the receiving antenna 2 is arranged on the inner side of the bend on the lower right side of the metal frame of the 5G mobile terminal. The radiation end of the transmitting antenna 1 and the radiation end of the receiving antenna 2 are symmetrically arranged on the inner side of the left and right sides of the metal frame of the 5G mobile terminal and close to each other. Near the bottom of the metal frame, the transmitting antenna 1 is provided with a transmitting antenna return point and a transmitting antenna feed point 12 for extracting signals. The receiving antenna 2 is provided with a receiving antenna return point 22 and a receiving antenna feed point 21 for receiving signals. The transmitting antenna return point 11 and the receiving antenna return point 22 are respectively arranged at the left and right ends of the bottom of the metal frame of the 5G mobile terminal. The distance between the transmitting antenna feed point 12 and the transmitting antenna return point 11 is d1, and the distance between the receiving antenna feed point 21 and the receiving antenna return point 22 is d2. The value range of d1 is 10mm≤d1≤35mm, and the value range of d2 is 10mm≤d2≤35mm. In this embodiment, the transmitting antenna can couple with the receiving antenna and enhance the total radiation efficiency of each other. This can ensure that the total radiation efficiency and isolation of the low-orbit satellite antenna assembly for 5G mobile terminals meet the comprehensive needs of people. At the same time, it also reduces the interference of the user's hand on the performance of the satellite communication antenna. The antenna assembly design and debugging time is short, and the user experience is good.

[0035] like Figure 1-8As shown, the distance d1 between the transmitting antenna feed point 12 and the transmitting antenna return point 11 is 22.5 mm, the distance d2 between the receiving antenna feed point 21 and the receiving antenna return point 22 is 15 mm, the transmitting antenna 1 has an inverted F antenna property as a whole, and the length is selected to be 212.5 mm, the receiving antenna 2 has an inverted F antenna property as a whole, and the length is selected to be 173 mm, the transmitting antenna feed point 12 can be connected to capacitors and inductors, and the receiving antenna feed point 21 can also be connected to capacitors and inductors; the transmitting antenna feed point 12 extends from the transmitting antenna 1 to the inside of the 5G mobile terminal, and the transmitting antenna return point 11 extends from The transmitting antenna 1 extends toward the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal. The receiving antenna feed point 21 extends from the receiving antenna 2 toward the interior of the 5G mobile terminal. The receiving antenna return point 22 extends from the receiving antenna 2 toward the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal. The maximum gain beam angle of the transmitting antenna and the maximum gain beam angle of the receiving antenna overlap, and both face the top of the 5G mobile terminal. This design can provide stronger communication capabilities with low-orbit satellites, and the maximum gain of the transmitting antenna and the receiving antenna is high, and the radiation direction is the most ideal radiation direction. The layout of the antenna position can minimize the interference of the user's hands on the performance of the satellite communication antenna. In this embodiment, the transmitting antenna and the receiving antenna are essentially inverted F antennas. Figure 2 This is the return loss diagram of the transmitting antenna, the frequency is about 0.229GHZ. Figure 3 This is the return loss diagram of the receiving antenna, with a frequency of approximately 0.286 GHz. The transmitting antenna and the receiving antenna meet the basic characteristics of the inverted F antenna, which receives a fundamental wave with a length of approximately four to eight times its own wavelength. Taking the transmitting antenna as an example, c = 2.97*10^8, λ 1小 =4*212.5mm=0.85mλ 2大 =8*212.5mm=1.7mλ3=c / f1≈1.3m. In this embodiment, the distance between the transmitting antenna feed point and the transmitting antenna return point is selected as 22.5mm, and the distance between the receiving antenna feed point and the receiving antenna return point is selected as 15mm. After multiple antenna simulations, it is found that maintaining the distance between the antenna feed point and the antenna return point at 10-35mm can achieve excellent antenna performance. The capacitor and inductor connected to the transmitting antenna feed point can adjust the impedance of the transmitting antenna to 50Ω, and the capacitor and inductor connected to the receiving antenna feed point can also adjust the impedance of the receiving antenna to 50Ω, thereby improving the maximum gain and radiation performance of the transmitting and receiving antennas. Figure 4 This is the return loss diagram after the transmitting antenna is connected to the capacitor and inductor. Figure 5 Return loss diagram after connecting capacitors and inductors to the receiving antenna. Figure 6 This is the isolation diagram between the transmitting antenna and the receiving antenna. The worst frequency isolation between the transmitting antenna and the receiving antenna is -35, which is much greater than the industry's isolation index of -15.

[0036] like Figure 7 As shown, the total free space gain of the transmitting antenna is -7.9dbi; Figure 8 As shown, the total free space gain of the receiving antenna is -5.2dbi, which is much greater than the industry's total radiation gain of -12dbi. Figure 9 As shown, the total gain of the transmitting antenna double-hand mode is -7.2dbi. Figure 10 As shown, the total gain of the receiving antenna in double-hand mode is -4.6dbi, which is 0.8dB higher than the total gain in free space. To achieve this, the antenna feed needs to be away from the hands and located slightly below the product. The maximum gain beam angles of the transmitting antenna and the receiving antenna overlap, which is better than non-overlapping in actual use. To achieve this, the radiating ends of the transmitting antenna and the receiving antenna need to be symmetrical. Figure 11 As shown in the figure, the transmitting antenna Theta = 90°1d pattern shows that the 60° beam angle gain performance of 150°-210° in actual use is excellent, greater than -8. Figure 12 As shown, the receiving antenna's Theta = 90° 1d pattern shows excellent gain performance (greater than -6) at a 60° beam angle of 150°-210° in actual use. To achieve this, the radiating tips of the transmitting and receiving antennas must be located on either side of the product, with the transmitting and receiving antenna feed points positioned slightly below the product. Ideal antenna design doesn't consider a feed point, but to extract the signal, the point at which it is extracted is called a feed point. The addition of a feed point generally affects the antenna's field distribution, and its selection is crucial in this embodiment to improve the overall radiation efficiency of the antenna structure.

[0037] From the above, it can be seen that the present invention provides a low-orbit satellite antenna assembly for 5G mobile terminals. By arranging mutually coordinated transmitting antennas and receiving antennas in the 5G mobile terminal, the transmitting antenna and the receiving antenna have high maximum gain and good isolation, and the radiation directions of the transmitting antenna and the receiving antenna overlap, and the radiation direction is the most ideal radiation direction. It can achieve the goal of making the total radiation efficiency of the low-orbit satellite antenna assembly for 5G mobile terminals meet people's comprehensive needs, while also reducing the interference effect of the user's hands on the performance of the satellite communication antenna. The antenna assembly has a short design and debugging time, a good user experience, a simple structure, stability and reliability, and also reduces the antenna design cost, solving the problem in the prior art that the design performance index requirements of the satellite communication antenna for 5G mobile terminals are difficult to achieve and the user's hands have an interference effect on the performance of the satellite communication antenna.

[0038] The specific implementation methods described above are preferred implementation methods of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A low-orbit satellite antenna assembly for a 5G mobile terminal, characterized by: It includes a transmitting antenna and a receiving antenna, which are respectively arranged on the inner side of the metal frame of the 5G mobile terminal and cooperate with each other. The transmitting antenna and the receiving antenna are respectively electrically connected to the main control circuit board in the 5G mobile terminal. The transmitting antenna is arranged on the inner side of the bend on the lower left side of the metal frame of the 5G mobile terminal, and the receiving antenna is arranged on the inner side of the bend on the lower right side of the metal frame of the 5G mobile terminal. The radiation end of the transmitting antenna and the radiation end of the receiving antenna are symmetrically arranged on the inner side of the left and right sides of the metal frame of the 5G mobile terminal and close to the bottom of the metal frame. The transmitting antenna is provided with a transmitting antenna return point and a transmitting antenna feed point for leading out signals, and the receiving antenna is provided with a receiving antenna return point and a receiving antenna feed point for receiving signals. The transmitting antenna return point and the receiving antenna return point are respectively arranged at the left and right ends of the bottom of the metal frame of the 5G mobile terminal. The distance between the transmitting antenna feed point and the transmitting antenna return point is d1, and the distance between the receiving antenna feed point and the receiving antenna return point is d2. The value range of d1 is 10mm≤d1≤35mm, and the value range of d2 is 10mm≤d2≤35mm.

2. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 1, characterized in that: The distance d1 between the transmitting antenna feeding point and the transmitting antenna return point is 22.5 mm.

3. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 2, characterized in that: The distance d2 between the receiving antenna feeding point and the receiving antenna return point is 15 mm.

4. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 3, characterized in that: The transmitting antenna as a whole has the properties of an inverted F antenna, and the length is selected to be 212.5 mm.

5. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 4, characterized in that: The receiving antenna as a whole has the properties of an inverted F antenna, and the length is selected to be 173 mm.

6. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 5, characterized in that: The transmitting antenna feeding point can be connected to a capacitor and an inductor.

7. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 6, characterized in that: The receiving antenna feeding point can be connected to a capacitor and an inductor.

8. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 7, characterized in that: The transmitting antenna feeding point extends from the transmitting antenna toward the interior of the 5G mobile terminal, and the transmitting antenna return point extends from the transmitting antenna toward the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal.

9. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 8, characterized in that: The receiving antenna feeding point extends from the receiving antenna toward the interior of the 5G mobile terminal, and the receiving antenna return point extends from the receiving antenna toward the interior of the 5G mobile terminal and is electrically connected to the main control circuit board in the 5G mobile terminal.

10. The low-orbit satellite antenna assembly for a 5G mobile terminal according to claim 9, characterized in that: The maximum gain lobe angle of the transmitting antenna and the maximum gain lobe angle of the receiving antenna overlap and are both directed upwards of the 5G mobile terminal.

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