A handheld communication device and a fan-out multi-antenna module thereof

Abstract

The present invention is applicable to the field of antenna communication technology, and provides a handheld communication device and a fan-out multi-antenna module thereof. The fan-out multi-antenna module includes multiple antennas, a low dielectric constant dielectric substrate, a medium dielectric constant dielectric substrate, a high dielectric constant dielectric substrate, an active high-frequency chip, and a module interconnection structure. The present invention can be well matched with the corners of the handheld terminal to save space. The present invention adopts a multi-antenna fan-out structure, does not need to adopt a beamforming algorithm, and adopts a switch switching structure to reduce costs and power loss, and improve the power endurance of the handheld terminal device. The present invention includes a variety of gradient dielectric materials, and electromagnetic waves propagating in a dielectric focusing lens structure will be bound and focused by a medium with a high dielectric constant to form a plane wave, so that the antenna radiation beam becomes narrower, the antenna gain and directivity become higher, and the requirements for the output power of the active chip are reduced, solving the difficulty of low synthetic antenna gain.

Description

Technical Field

[0001] The present invention belongs to the technical field of antenna communication, and in particular relates to a handheld communication device and a fan-out multi-antenna module thereof. Background Art

[0002] There are certain requirements for antenna gain and antenna scanning range in multi-antenna systems in 5G communication handheld terminal devices. In handheld mobile terminals, the antenna needs to be small in size, miniaturized in structure, and easy to integrate with active chips, thereby forming a miniaturized active antenna module in the handheld device.

[0003] In the antenna modules of existing 5G communication handheld terminals, the antenna structure adopts an array form to improve the gain, and uses a beamforming control method to form a beam scan. Figure 1 and Figure 2 , shows an existing antenna module structure, including multiple antennas 1', a dielectric substrate 2', an active high-frequency chip 3 and a module interconnection structure 4, wherein the dielectric substrate 2' is square, and the multiple antennas 1' are arranged into a square array antenna. This array architecture is not conducive to the effective use of space in a handheld terminal. At the same time, please refer to Figure 3 and Figure 4 ,The gain of the existing synthetic antenna is low, and the beamforming algorithm needs to be run in the implementation of ,array beamforming, which will generate large power loss and is not conducive to the battery life of ,handheld terminals.

[0004] Based on the above problems, there is an urgent need for a new multi-antenna module with a miniaturized structure, effective beam scanning, strong gain and directivity, and low power loss. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a handheld communication device and a fan-out multi-antenna module thereof, aiming to solve the problems that the antenna modules in existing handheld communication devices are not conducive to integration into handheld terminals, have low gain, weak directivity and large power loss.

[0006] The present invention is implemented as follows: a fan-out multi-antenna module is applied to a handheld communication device, wherein the fan-out multi-antenna module comprises a plurality of antennas, a low dielectric constant dielectric substrate, a medium dielectric constant dielectric substrate, a high dielectric constant dielectric substrate, an active high-frequency chip, and a module interconnection structure;

[0007] The planar shape of the low dielectric constant dielectric substrate is a sector shape, the multiple antennas are installed in the low dielectric constant dielectric substrate, and the multiple antennas are distributed at intervals along the circumference of the low dielectric constant dielectric substrate to form a distributed array antenna;

[0008] The medium dielectric constant dielectric substrate and the high dielectric constant dielectric substrate extend outward in sequence along the radial direction of the low dielectric constant dielectric substrate; the dielectric constants of the low dielectric constant dielectric substrate, the medium dielectric constant dielectric substrate and the high dielectric constant dielectric substrate increase in sequence, and the three are fixedly connected to each other to form a dielectric focusing lens structure;

[0009] The active high-frequency chip is used to generate, adjust and control high-frequency signals, and is located outside the low-dielectric constant medium substrate. The active high-frequency chip is electrically connected to the array antenna through the module interconnection structure.

[0010] Furthermore, the planar shape of the dielectric focusing lens structure is a fan shape.

[0011] Furthermore, the planar shapes of the low dielectric constant dielectric substrate and the dielectric focusing lens structure are both sectors with a central angle of 90 degrees.

[0012] Furthermore, a plurality of via holes are provided on the dielectric focusing lens structure, and a hole wall of each via hole is covered with a metal layer, thereby forming a metalized via hole wall.

[0013] Furthermore, the plurality of via holes are arranged in a plurality of columns, the plurality of via holes in the plurality of columns are spaced apart along the circumferential direction of the dielectric focusing lens structure, and the plurality of via holes in the same column are spaced apart along the radial direction of the dielectric focusing lens structure.

[0014] On the other hand, the present invention further provides a handheld communication device, wherein any one of the above-mentioned fan-out multi-antenna modules is arranged at a corner position inside the handheld communication device.

[0015] Furthermore, the planar shape of the corners of the handheld communication device is an arc shape.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The antenna module of the present invention has a dielectric focusing lens structure with a fan-shaped plane shape, which can be well matched with the corner area of ​​the handheld terminal, saving space and facilitating the integration of the handheld terminal.

[0018] The antenna module of the present invention adopts a multi-antenna fan-out structure, does not need to use a beamforming algorithm, reduces cost and power loss, improves the efficiency of the entire module, and improves the power endurance of the handheld terminal device. At the same time, the switching of the electronic switch can also be used to reduce power loss, improve efficiency, and extend the battery life of the handheld terminal.

[0019] The dielectric focusing lens structure includes a variety of gradient dielectric constant materials. When electromagnetic waves propagate in the dielectric focusing lens structure, they will be bound and focused by the medium with a high dielectric constant, forming a plane wave, which makes the antenna radiation beam narrower and the antenna gain higher. This improves the gain of the antenna structure, reduces the requirements for the output power of the active chip, and solves the difficulty of low gain of the synthetic antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic top view of an antenna module in the prior art;

[0021] Figure 2 is a side view schematic diagram of an antenna module in the prior art;

[0022] Figure 3 is a schematic diagram of a radiation beam of an antenna module in the prior art;

[0023] Figure 4 is a schematic diagram of a radiation beam of another antenna module in the prior art;

[0024] Figure 5 is a schematic top view of a fan-out multi-antenna module provided by an embodiment of the present invention;

[0025] Figure 6 yes Figure 5 A schematic side view of the fan-out multi-antenna module shown;

[0026] Figure 7 is a schematic diagram of a radiation beam of a fan-out multi-antenna module provided in an embodiment of the present invention;

[0027] Figure 8 This is a position distribution diagram of a fan-out multi-antenna module in a handheld communication device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] See also Figure 5 and Figure 6 , showing a preferred embodiment provided by the present invention, a fan-out multi-antenna module 100 applied to a handheld communication device, which includes multiple antennas 1, a low dielectric constant dielectric substrate 2a, a medium dielectric constant dielectric substrate 2b, a high dielectric constant dielectric substrate 2c, an active high-frequency chip 3 and a module interconnection structure 4.

[0031] The planar shape of the low dielectric constant dielectric substrate 2a is a sector shape, and a plurality of antennas 1 are installed in the low dielectric constant dielectric substrate 2a. Specifically, the antenna 1 can be installed on the outer surface of the low dielectric constant dielectric substrate 2a, or can be embedded in the low dielectric constant dielectric substrate 2a. In addition, the plurality of antennas 1 are distributed at intervals along the circumference of the low dielectric constant dielectric substrate 2a to form a distributed array antenna. The array antenna is mainly used to form a beam for signal energy radiation.

[0032] The above-mentioned medium dielectric constant dielectric substrate 2b and high dielectric constant dielectric substrate 2c extend outward in sequence along the radial direction of the low dielectric constant dielectric substrate 2a. In addition, the dielectric constants of the low dielectric constant dielectric substrate 2a, the medium dielectric constant dielectric substrate 2b, and the high dielectric constant dielectric substrate 2c increase in sequence, and the three are fixedly connected to each other to form a dielectric focusing lens structure. The dielectric focusing lens structure is used as a medium for electromagnetic waves to propagate between antenna metal structures.

[0033] In this embodiment, the planar shapes of the low dielectric constant dielectric substrate 2a and the dielectric focusing lens structure are both sectors with a central angle of 90 degrees, that is, a quarter circle. It is easy to understand that the sector shape is only an example of a preferred shape. In actual applications, in addition to the sector shape, other curved surface geometric structures can also be used.

[0034] The active high frequency chip 3 is used to generate, adjust and control high frequency signals and is located below the low dielectric constant medium substrate 2a. The module interconnection structure 4 is mainly used to connect the array antenna and the active high frequency chip 3 to transmit high frequency signals inside the antenna module.

[0035] The antenna module of this embodiment adopts a multi-antenna fan-out structure, and does not need to use a beamforming algorithm, which reduces costs and power loss, improves the efficiency of the overall antenna module, and improves the power endurance of the handheld terminal device. At the same time, the switching of electronic switches can also be used to reduce power loss, improve efficiency, and extend the battery life of the handheld terminal.

[0036] Please see Figure 7 The dielectric focusing lens structure of this embodiment includes a variety of gradient dielectric constant materials. When electromagnetic waves propagate in the dielectric focusing lens structure, they will be bound and focused by the medium with a high dielectric constant, forming a plane wave, which makes the antenna radiation beam narrower, the antenna gain higher and the directivity stronger. This improves the gain of the antenna structure, reduces the output power requirements of the active high-frequency chip 3, and solves the difficulty of low gain of the synthetic antenna.

[0037] Furthermore, the dielectric focusing lens structure is provided with a plurality of via holes 21, and the hole wall of each of the via holes 21 is covered with a metal layer, thereby forming a metallized via hole wall. The plurality of via holes are arranged in a plurality of columns, and the plurality of columns of via holes 21 are spaced apart along the circumferential direction of the dielectric focusing lens structure, and the plurality of via holes 21 in the same column are spaced apart along the radial direction of the dielectric focusing lens structure. By providing a plurality of metallized via hole walls, an eddy current, i.e., a loop in space, can be formed between the radio frequency signal and the ground, so that a portion of the radiated signal is absorbed, thereby reducing the influence of the radio frequency signal radiation on other signals in the board. On the other hand, the metallized via hole wall can improve the heat dissipation performance of the fan-out multi-antenna module 100.

[0038] See also Figure 8 This embodiment also provides a handheld communication device 200, in which the above-mentioned fan-out multi-antenna module 100 is arranged at the corner position inside the handheld communication device 200. The plane shape of the four corners of the handheld communication device 200 is an arc shape, and the fan-out multi-antenna module 100 is installed at the four corners of the handheld communication device 200, so that it can form a wider beam scanning coverage range. In addition, the shape of the fan-out multi-antenna module 100 can be well matched with the corner shape of the handheld terminal, saving space and facilitating the integration of the handheld terminal.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan-out multi-antenna module, applied to a handheld communication device, characterized in that: The fan-out multi-antenna module includes multiple antennas, a low dielectric constant dielectric substrate, a medium dielectric constant dielectric substrate, a high dielectric constant dielectric substrate, an active high-frequency chip, and a module interconnection structure; The planar shape of the low dielectric constant dielectric substrate is a sector shape, the multiple antennas are installed in the low dielectric constant dielectric substrate, and the multiple antennas are distributed at intervals along the circumference of the low dielectric constant dielectric substrate to form a distributed array antenna; The medium dielectric constant dielectric substrate and the high dielectric constant dielectric substrate extend outward in sequence along the radial direction of the low dielectric constant dielectric substrate; the dielectric constants of the low dielectric constant dielectric substrate, the medium dielectric constant dielectric substrate and the high dielectric constant dielectric substrate increase in sequence, and the three are fixedly connected to each other to form a dielectric focusing lens structure; The active high-frequency chip is used to generate, adjust and control high-frequency signals, and is located outside the low-dielectric constant medium substrate. The active high-frequency chip is electrically connected to the distributed array antenna through the module interconnection structure.

2. The fan-out multi-antenna module according to claim 1, characterized in that: The plane shape of the medium focusing lens structure is a fan shape.

3. The fan-out multi-antenna module according to claim 2, characterized in that: The planar shapes of the low dielectric constant dielectric substrate and the dielectric focusing lens structure are both sectors with a central angle of 90 degrees.

4. The fan-out multi-antenna module according to claim 2, characterized in that: A plurality of via holes are provided on the dielectric focusing lens structure, and a hole wall of each via hole is covered with a metal layer to form a metalized via hole wall.

5. The fan-out multi-antenna module according to claim 4, characterized in that: The multiple via holes are arranged in multiple columns, the via holes in the multiple columns are spaced apart along the circumferential direction of the dielectric focusing lens structure, and the multiple via holes in the same column are spaced apart along the radial direction of the dielectric focusing lens structure.

6. A handheld communication device, characterized in that: The fan-out multi-antenna module according to any one of claims 1 to 5 is arranged at a corner position inside the handheld communication device.

7. The handheld communication device according to claim 6, characterized in that: The planar shape of the corners of the handheld communication device is an arc shape.

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