TWI832638B - Multi-frequency multi-antenna device - Google Patents

Abstract

The disclosure provides a multi-frequency multi-antenna device, including a dielectric base, a grounding portion, a plurality of first antenna modules, a plurality of second antenna modules and a plurality of third antenna modules. The dielectric base includes a bottom plate and four side plates vertically connected with the bottom plate. The grounding portion is disposed on the second surface of the bottom plate. The first antenna module includes a first feeding transmission line, three first inverted-F antennas and a slot antenna. The second antenna module includes a second feeding transmission line, a monopole antenna and two second inverted-F antennas. The third antenna module includes a third feeding transmission line, a third inverted-F antenna and a fourth inverted-F antenna. The first antenna modules, the second antenna modules and the third antenna modules are respectively symmetrically arranged on the bottom plate and the side plate of the dielectric base.

Description

Multi-frequency multi-antenna device

This case relates to the field of wireless communications, specifically to a multi-frequency multi-antenna device that can simultaneously support 5G (LB/MB), 5G-FR1 and Wi-Fi 6E frequency bands.

As people's demand for network data transmission is getting higher and higher, such as playing e-sports games, live video broadcasts, uploading and downloading large amounts of data, etc., the previous communication technology can no longer meet the needs of modern people. Therefore, in the third The fifth generation mobile communication system advocates Massive Input Massive Output (MIMO) technology to improve data throughput (Throughput) and channel capacity (Channel Capacity).

However, as tablet designs become increasingly thinner and thinner, and internal space is limited, there are increasing restrictions on antenna design. Furthermore, when users use a tablet, they usually hold both sides of the tablet to play games or watch videos. Therefore, the antenna design and distribution must be designed to avoid interference with the antenna by hands. Therefore, how to design an antenna on a tablet that simultaneously meets the needs of tablet space, antenna reduction, and bandwidth has become the focus of current antenna design.

This application provides a multi-frequency multi-antenna device, which includes a dielectric base, a ground part, a plurality of first antenna modules, a plurality of second antenna modules and a plurality of third antenna modules. The media base includes a base plate and four side plates connected vertically. The base plate has a first surface and a second surface. The grounding part is arranged on the second surface of the base plate. Each first antenna module includes a first feed transmission line, three first inverted F antennas and a slot antenna, and the first feed transmission line has a first metal branch, a second metal branch and A third metal branch, the first feed transmission line is disposed on the first surface and extends to the inner surface of the side plate, the first inverted F antenna is located on the outer surface of the side plate and connected to the ground, and the slot antenna is disposed on the second The first metal branch corresponds to the slot antenna to couple the slot antenna, and the second metal branch and the third metal branch are provided on the inner surface of the side plate to couple the first inverted F antenna. Each second antenna module includes a second feed transmission line, a monopole antenna and two second inverted F antennas. The second feed transmission line is disposed on the first surface and has a meandering portion. , the monopole antenna is located on the inner surface of the side plate and connected to the second feed transmission line, the second inverted F antenna is provided on the outer surface of the side plate and connected to the ground part, the second inverted F antenna corresponds to the monopole antenna, so as to utilize the monopole antenna Couple the second inverted F antenna. Each third antenna module includes a third feed transmission line, a third inverted F antenna and a fourth inverted F antenna. The third feed transmission line is disposed on the first surface, and the third inverted F antenna is disposed on the side panel. The inner surface is connected to the third feed transmission line, and the fourth inverted F antenna is disposed on the inner surface of the side plate and spaced apart from one side of the third inverted F antenna, so that the third inverted F antenna is used to couple the fourth inverted F antenna. Among them, the first antenna module, the second antenna module and the third antenna module are symmetrically arranged on the bottom plate and the side plate of the dielectric base respectively.

In one embodiment, the first inverted F antenna further extends from the outer surface of the side plate to the second surface and is connected to the ground portion.

In one embodiment, the four side panels include a first side panel, a second side panel, a third side panel, and a fourth side panel. The first side panel is relative to the third side panel, and the second side panel is relative to the fourth side panel. The first antenna modules are respectively arranged on the first surface, the first side plate and the third side plate, and the second antenna modules are respectively arranged on the first surface, the second side plate and the fourth side plate. The third antenna modules are respectively disposed on the first surface, the first side plate, the second side plate, the third side plate and the fourth side plate, so that each third antenna module is respectively located between the first antenna modules or Located between the second antenna module.

In one embodiment, the first feed transmission line extends from a first feed point, the second feed transmission line extends from a second feed point, and the third feed transmission line extends from a third feed point. Point extends out.

In one embodiment, in the first antenna module, the slot antenna is excited at the frequency band of 1.96 GHz, the three first inverted F antennas are excited at the frequency bands of 0.7 GHz, 0.81 GHz and 0.96 GHz respectively, and the three first inverted F antennas are excited at the frequency band of 0.7 GHz, 0.81 GHz and 0.96 GHz respectively. The triple frequency modes of the F antenna are excited in the frequency bands of 2.17 GHz, 2.31 GHz and 2.6 GHz respectively.

In one embodiment, the resonant path of the slot antenna is a length of 0.18 times the wavelength of the operating frequency, and the resonant paths of the three first inverted F antennas are respectively 0.16 times the wavelength, 0.16 times the wavelength, and 0.22 times the wavelength of the operating frequency.

In one embodiment, in the second antenna module, the monopole antenna excites the 4 GHz frequency band, and the two second inverted F antennas excite the 3.5 GHz and 4.5 GHz frequency bands respectively.

In one embodiment, the resonant path of the monopole antenna is 0.14 times the wavelength of the operating frequency, and the resonant paths of the two second inverted F antennas are 0.23 times the wavelength and 0.2 times the wavelength of the operating frequency, respectively.

In one embodiment, in the third antenna module, the third inverted F antenna is excited in the 5 GHz frequency band, and the fourth inverted F antenna is excited in the 2.4 GHz frequency band.

In one embodiment, the resonance path of the third inverted F antenna is a length of 0.21 times the wavelength of the operating frequency, and the resonance path of the fourth inverted F antenna is a length of 0.18 times the wavelength of the operating frequency.

In one embodiment, the multi-band multi-antenna device is mounted in a flat panel.

As mentioned in the previous embodiments, this project proposes a multi-frequency multi-antenna device, which uses an array of first antenna modules, second antenna modules and third antenna modules to be evenly arranged on a dielectric base so that they can receive The signal effect is good and there are no dead spots, and the operable bandwidth of the antenna can be increased without minimizing the size of the antenna. Moreover, this case uses MIMO technology in 5G (LB/MB), Wi-Fi 6E, and 5G-FR1 frequency bands, allowing multi-frequency and multi-antenna devices to perform better in trends that require large transmission volumes and high transmission speeds. Therefore, this case allows users to avoid interference to the antenna caused by holding the tablet with both hands during operation, maintains good transmission performance and the best user experience, and greatly increases upload and download speeds and reception stability.

The embodiments of this case will be described below with reference to relevant drawings. In addition, some components or structures are omitted in the drawings of the embodiments to clearly illustrate the technical features of the present invention. In the drawings, the same reference numbers refer to the same or similar elements or circuits, it is understood that although the terms "first", "second", etc. may be used herein to describe various elements, components, regions or functions , but these elements, components, regions and/or functions should not be limited by these terms, which are only used to distinguish one element, component, region or function from another element, component, region or function.

Please refer to Figure 1, Figure 2 and Figure 3 at the same time. A multi-band multi-antenna device 10 includes a dielectric base 12, a ground portion 14, and a plurality of first antenna modules (here, four first antenna modules). Antenna module as an example) 16, 18, 20, 22, plural second antenna modules (here, eight second antenna modules are taken as an example) 24, 26, 28, 30, 32, 34, 36, 38 and a plurality of third antenna modules (here, four third antenna modules are taken as an example) 40, 42, 44, 46. The media base 12 includes a base plate 121 and four vertically connected side plates. The four side plates are respectively a first side plate 122, a second side plate 123, a third side plate 124 and a fourth side plate 125. The first side plate 122 is relative to the third side plate 124, the second side plate 123 is relative to the fourth side plate 125, and the two ends of the first side plate 122 are respectively connected to the same side of the second side plate 123 and the fourth side plate 125, and the two ends of the third side plate 124 are respectively connected. Connect the second side plate 123 and the other side of the fourth side plate 125 on the same side. The bottom plate 121 has a first surface 121a and a second surface 121b. The first surface 121a is an inner surface surrounded by the first side plate 122, the second side plate 123, the third side plate 124 and the fourth side plate 125. The second surface 121b It is another outer surface relative to the first surface 121a. The ground portion 14 is disposed on the second surface 121b of the bottom plate 121 so that the ground portion 14 substantially covers the second surface 121b. Among them, the first antenna modules 16, 18, 20, 22, the second antenna modules 24, 26, 28, 30, 32, 34, 36, 38 and the third antenna modules 40 , 42, 44 and 46 are respectively symmetrically arranged on the bottom plate 121 of the media base 12 and the first side plate 122, the second side plate 123, the third side plate 124 and the fourth side plate 125 around it. In one embodiment, the first antenna modules 16, 18, 20, 22 are symmetrically arranged on the first surface 121a and the second surface 121b of the base plate 121 and the first side plate 122 and the third side plate 124 surrounding it. On the top, the second antenna modules 24, 26, 28, 30, 32, 34, 36, 38 are symmetrically arranged on the first surface 121a of the base plate 121 and the surrounding second side plate 123 and the fourth side plate 125. , the third antenna modules 40, 42, 44, 46 are symmetrically arranged on the first surface 121a of the base plate 121 and the first side plate 122, the second side plate 123, the third side plate 124 and the fourth side plate 125 surrounding it. .

In this embodiment, the first antenna modules 16 and 22 are respectively disposed on the first surface 121a and the second surface 121b of the base plate 121 and are located on both sides of the first side plate 122. The first antenna modules 18, 20 are respectively disposed on the first surface 121a and the second surface 121b and located on both sides of the third side plate 124, so that the first antenna modules 16, 18, 20, and 22 are respectively located at the four corners of the dielectric base 12. The second antenna modules 24, 26, 28, 30, 32, 34, 36, and 38 are arranged in groups of two, and the second antenna modules 24, 26, 28, and 30 are respectively disposed on the bottom plate 121. On the first surface 121a and located on both sides of the second side plate 123, the second antenna modules 32, 34 and 36, 38 are respectively provided on the first surface 121a and located on both sides of the fourth side plate 125, so that the next day The line module groups 24, 26, 28, 30, 32, 34, 36, and 38 are respectively located at the four corners of the media base 12. The third antenna modules 40, 42, 44, and 46 are disposed on the first surface 121a of the bottom plate 121, and are respectively located in the middle positions of the first side plate 122, the second side plate 123, the third side plate 124, and the fourth side plate 125. The third antenna module 46 is positioned between the first antenna modules 16 and 22, the third antenna module 40 is positioned between the second antenna modules 26 and 28, and the third antenna module 42 is positioned between the first antenna Between the modules 18 and 20 and the third antenna module 44 is located between the second antenna modules 34 and 36. Based on this, the first antenna modules 16, 18, 20, 22, the second antenna modules 24, 26, 28, 30, 32, 34, 36, 38 and the third antenna modules 40, 42, 44, The 46 series are evenly and symmetrically arranged on the dielectric base 12, making the antenna reception more efficient and without blind spots, and different antenna combinations can be used to support different frequency band requirements, but this case is not limited to this position design.

In one embodiment, the multi-band multi-antenna device 10 is installed in a tablet, so that the tablet can receive and transmit signals of different frequency bands without blind spots to effectively support 5G (LB/MB), 5G-FR1 and Wi-Fi. 6E frequency band.

As shown in Figures 1 to 3, 4 and 5, among the first antenna modules 16, 18, 20, and 22, taking the first antenna module 20 as an example, the first antenna module 20 includes A first feed transmission line 201, three first inverted F antennas 202, 203, 204 and a slot antenna 205, and the first feed transmission line 201 has a first metal branch 206, a second metal branch 207 and A third metal branch 208. The first feed transmission line 201 is disposed on the first surface 121a, extends from a first feed point Port C, bends and extends along the edge of the first surface 121a, and extends vertically to the inner surface of the third side plate 124. . The three first inverted F antennas 202, 203, and 204 are spaced apart on the outer surface of the third side plate 124, and one end thereof extends from the outer surface of the third side plate 124 to the second surface 121b and is connected to the grounding portion 14 to ensure that There is a current path of sufficient length, a gap exists between adjacent first inverted F antennas 202 and 203, and a gap also exists between adjacent first inverted F antennas 203 and 204. The slot antenna 205 is disposed on the second surface 121b and is opened on the ground portion 14 . The first metal branch 206 extending vertically from the first feed transmission line 201 is located on the first surface 121 a and corresponds to the slot antenna 205 to couple and excite the slot antenna 205 . The second metal branch 207 and the third metal branch 208 extending vertically from the first feed transmission line 201 are arranged parallel to the inner surface of the third side plate 124 and correspond to the first inverted F antennas 202, 203, 204 for coupling excitation. First inverted F antennas 202, 203, 204.

In one embodiment, in the first antenna module 20, a 50Ω first feed transmission line 201 is used, the current path length of the slot antenna 205 is 28 mm, and the slot antenna 205 is excited in the frequency band of 1.96 GHz. The resonance path is a length 0.18 times the wavelength of the operating frequency. The current path length of the first inverted F antenna 202 is 70.5 mm and is excited in the 0.7 GHz frequency band. The resonance path of the first inverted F antenna 202 is a length 0.16 times the wavelength of the operating frequency. The current path length of the first inverted F antenna 203 is 61.7 mm, which is excited in the frequency band of 0.81 GHz. The resonance path of the first inverted F antenna 203 is a length of 0.16 times the wavelength of the operating frequency. The current path length of the first inverted F antenna 204 is 70.3 mm, and the excitation is in the frequency band of 0.96 GHz. The resonance path of the first inverted F antenna 204 is a length of 0.22 times the wavelength of the operating frequency. Moreover, the triple frequency modes of the first inverted F antennas 202, 203, and 204 are respectively excited in the frequency bands of 2.17 GHz, 2.31 GHz, and 2.6 GHz. Based on this, the first antenna module 20 can effectively support the frequency band operation range of 5G (LB/MB). Similarly, the other first antenna modules 16, 18, and 22 also have the same structure and function, so they will not be described again here.

As shown in Figures 1 to 3, Figure 6 and Figure 7, among the second antenna modules 24, 26, 28, 30, 32, 34, 36, 38, taking the second antenna module 24 as an example, The second antenna module 24 includes a second feed transmission line 241, a monopole antenna 242 and two second inverted F antennas 243 and 244. The second feed transmission line 241 is disposed on the first surface 121a. The second feed transmission line 241 extends from a second feed point Port 1 and extends toward the direction of the second side plate 123, and the second feed transmission line 241 has A meandering portion 241a. The monopole antenna 242 is located on the inner surface of the second side plate, and one end of the monopole antenna 242 is connected to the second feed transmission line 241 and the other end extends toward the right. Two second inverted F antennas 243 and 244 are disposed on the outer surface of the second side plate 123 and connected to the ground part 14, so that the second inverted F antennas 243 and 244 correspond to the monopole antenna 242, so as to utilize the monopole antenna 242 to couple and excite the antenna behind it. Second inverted F antennas 243, 244. Furthermore, another second antenna module 26 is arranged adjacent to the second antenna module 24, and its monopole antenna 262 on the second side plate 123 is the same as the monopole antenna of the second antenna module 24. 242 back-to-back configuration to improve isolation and avoid signal interference with each other.

In one embodiment, in the second antenna module 24, a 50Ω second feed transmission line 241 is used, and the structural design of the meandering portion 241a is used to increase the overall reactance, so that the second feed transmission line 241 The signal is fed into the monopole antenna 242 on the second side plate 123 . The current path length of the monopole antenna 242 is 10.6 mm, and the excitation is in the 4 GHz frequency band. The resonance path of the monopole antenna 242 is a length of 0.14 times the wavelength of the operating frequency. The current path length of the second inverted F antenna 243 is 20 mm and is excited in the 3.5 GHz frequency band. The resonance path of the second inverted F antenna 243 is a length of 0.23 times the wavelength of the operating frequency. The current path length of the second inverted F antenna 244 is 18.5 mm and is excited in the 4.5 GHz frequency band. The resonance path of the second inverted F antenna 244 is a length of 0.2 times the wavelength of the operating frequency. Based on this, the second antenna module 24 can effectively support the frequency band operation range of 5G-FR1. Similarly, the other second antenna modules 26, 28, 30, 32, 34, 36, and 38 also have the same structure and function, so they will not be described again here.

As shown in FIGS. 1 to 3 and 8 , among the third antenna modules 40 , 42 , 44 , and 46 , taking the third antenna module 42 as an example, the third antenna module 42 includes a third feed transmission line. 421, a third inverted F antenna 422 and a fourth inverted F antenna 423. The third feed transmission line 421 is disposed on the first surface 121 a. The third feed transmission line 421 extends from a third feed point Port II and extends toward the third side plate 124 . The third inverted F antenna 422 is disposed on the inner surface of the third side plate 124. One end of the third inverted F antenna 422 is connected to the third feed transmission line 421, and the other end extends from the third side plate 124 to the first surface 121a and is connected to Grounding part 14. The fourth inverted F antenna 423 is disposed on the inner surface of the third side plate 124 and is spaced apart from one side of the third inverted F antenna 422. One end of the fourth inverted F antenna 423 is spaced apart from the third inverted F antenna 422, and the other end is spaced apart from the third inverted F antenna 422. It extends vertically toward the first surface 121a and is connected to the ground portion 14 to use the third feed transmission line 421 to transmit the signal fed from the third feed point Port II to the third inverted F antenna 422, and then use the third inverted F The antenna 422 is coupled to excite the fourth inverted F antenna 423 .

In one embodiment, in the third antenna module 42 , a 50Ω third feed transmission line 421 is used to feed the signal to the third inverted F antenna 422 on the third side plate 124 . The current path length of the third inverted F antenna 422 is 13 mm and is excited in the 5 GHz frequency band. The resonance path of the third inverted F antenna 422 is a length of 0.21 times the wavelength of the operating frequency. The current path length of the fourth inverted F antenna 423 is 21.5 mm and is excited in the 2.4 GHz frequency band. The resonance path of the fourth inverted F antenna 423 is a length 0.18 times the wavelength of the operating frequency. Based on this, the third antenna module 42 can effectively support the frequency band operation range of Wi-Fi 6E. Similarly, the other third antenna modules 40, 44, and 46 also have the same structure and function, so they will not be described again here.

In one embodiment, as shown in Figure 1, the ground part 14, the first feed transmission line 201, the first inverted F antenna 202, 203, 204, the first metal branch 206, the second metal branch 207, the third The metal branch 208, the second feed transmission line 241, the monopole antenna 242, the second inverted F antennas 243, 244, the third feed transmission line 421, the third inverted F antenna 422 and the fourth inverted F antenna 423 are composed of Made of conductive metal materials, such as silver, copper, aluminum, iron or alloys thereof, but this case is not limited to this.

The following are actual simulation test results of the multi-frequency multi-antenna device 10, which are respectively for the 5G (LB/MB) frequency band, 5G-FR1 frequency band, Wi-Fi 6E frequency band, isolation (Isolation) and packet correlation coefficient (Envelope Correlation). Coefficient, ECC) for testing. As shown in FIG. 1 , the first antenna module 16 has a first feed point Port A, the first antenna module 18 has a first feed point Port B, and the first antenna module 20 has a first feed point Port A. The feed point Port C and the first antenna module 22 have a first feed point Port D to feed signals from different feed points respectively; the second antenna module 24 has a second feed point Port 1, The second antenna module 26 has a second feed point Port 2, the second antenna module 28 has a second feed point Port 3, the second antenna module 30 has a second feed point Port 4, and the second antenna module 28 has a second feed point Port 3. The antenna module 32 has a second feed point Port 5, the second antenna module 34 has a second feed point Port 6, the second antenna module 36 has a second feed point Port 7 and the second antenna The module 38 has a second feed point Port 8 to feed signals from different feed points respectively; the third antenna module 40 has a third feed point Port I, and the third antenna module 42 has a third feed point. Point Port II, the third antenna module 44 has a third feed point Port III, and the third antenna module 46 has a third feed point Port IV, so as to feed signals from different feed points respectively.

Figure 9 is a schematic diagram of the S parameter (return loss) simulation generated by the first antenna module in the 5G (LB/MB) frequency band according to an embodiment of the present case. It can be seen from Figure 9 that in the low frequency range, although the bandwidth is relatively Narrow, but it produces three modes, and almost meets the bandwidth requirements in the mid-frequency range, so it can meet the frequency band range of 5G (LB/MB). Figure 10A and Figure 10B are respectively schematic diagrams of the isolation simulation between the first antenna module (Port A~D) and the third antenna module (Port II, IV) according to an embodiment of the present invention. Here, the isolation It refers to testing two adjacent antenna modules. As shown in Figure 10A and Figure 10B, the isolation in the 5G (LB/MB) frequency band all meets the isolation standard of -15 dB or less, so that each antenna The interaction in the application is small. Figure 11 is a simulation diagram of the packet correlation coefficient (ECC) generated by the first antenna module in the 5G (LB/MB) frequency band according to an embodiment of the present case. As shown in Figure 11, the packet correlation coefficient is expressed in the data within the frequency band Almost all are close to the standard, so in the application of MIMO (4*4 MIMO) technology, the mutual interference of antennas is small.

Figure 12 is a schematic diagram of the S parameter (return loss) simulation generated by the second antenna module in the 5G-FR1 frequency band according to an embodiment of the present case. It can be seen from Figure 12 that the return loss (Return) in Port 1 ~ Port 4 Loss) data, it almost meets the frequency band n77~n79, so it can meet the frequency band range of 5G-FR1. Figure 13A and Figure 13B respectively show the connection between the second antenna module (Port 1-4), the third antenna module (Port I) and the first antenna module (Port A, B) according to an embodiment of the present case. Isolation simulation diagram. Here, isolation refers to testing two adjacent antenna modules. As shown in Figure 13A and Figure 13B, the isolation in the 5G-FR1 frequency band all meets the isolation level -10 The standard below dB makes the mutual influence of each antenna in the application smaller. Figure 14 is a schematic diagram of the packet correlation coefficient (ECC) simulation generated by the second antenna module in the 5G-FR1 frequency band according to an embodiment of the present case. As shown in Figure 14, the performance of the packet correlation coefficient in the data in the frequency band almost reaches standard, so in the application of MIMO (8*8 MIMO) technology, the mutual interference of antennas is small.

Figure 15 is a schematic diagram of the S parameter (return loss) simulation generated by the third antenna module in the Wi-Fi 6E frequency band according to an embodiment of the present case. It can be seen from Figure 15 that at the third feed point Port I ~ Port IV The return loss data almost meets the frequency band of Wi-Fi 6E. Figure 16A and Figure 16B respectively show the third antenna module (Port I-IV) versus the second antenna module (Port 2, 3, 6, 7) and the first antenna module (Port A to D) simulation diagram of isolation. Here, isolation refers to testing two adjacent antenna modules. As shown in Figure 16A and Figure 16B, the isolation in the Wi-Fi 6E frequency band All of them meet the standard of isolation below -10 dB, so that the mutual influence of each antenna in the application is small. Figure 17 is a schematic diagram of the packet correlation coefficient (ECC) simulation generated by the third antenna module in the Wi-Fi 6E frequency band according to an embodiment of this case. As shown in Figure 17, the performance of the packet correlation coefficient is almost all in the data in the frequency band. Complying with the standard, even almost zero, because the third feed point Port I ~ Port IV are far apart in the setting position, so in the application of MIMO (4*4 MIMO) technology, the mutual interference of the antennas is small.

This case mainly adopts the structural design of a slot antenna with three inverted F antennas in the 5G (LB/MB) frequency band, and uses a coupling feed method to generate three modes at low frequencies, and then uses the three modes generated by these three inverted F antennas. A three-frequency mode is combined with a slot antenna structure to meet the intermediate frequency bandwidth, and the three inverted F antennas are placed more compactly in the 5G (LB/MB) frequency band to reduce the antenna structure. In the 5G-FR1 frequency band, a monopole antenna is used with two inverted F antennas to excite the two modes, and a meandering structure is added to the feed transmission line to improve the inductance, making the matching of the antennas in the frequency band more perfect. In the Wi-Fi 6E frequency band, an inverted F antenna is used to design the high-frequency mode, and then coupled to the adjacent inverted F antenna to excite the low-frequency mode to meet the Wi-Fi 6E frequency band. Therefore, the 5G (LB/MB) frequency band meets the 4*4 MIMO technology, not only increasing to 8*8 MIMO technology in the 5G-FR1 frequency band, but also advancing to the 4*4 MIMO technology of Wi-Fi 6E in the Wi-Fi frequency band. Based on this, the multi-frequency multi-antenna device in this case can be applied to future big data and high-speed transmission.

To sum up, this case is a multi-frequency multi-antenna device, which uses an array of first antenna modules, second antenna modules and third antenna modules to be evenly arranged on a dielectric base to receive signals. The effect is good and there are no dead spots, and the operable bandwidth of the antenna can be increased without minimizing the size of the antenna. Moreover, this case uses 4*4 MIMO technology in both 5G (LB/MB) and Wi-Fi 6E frequency bands, and 8*8 MIMO technology is used in the 5G-FR1 frequency band, allowing multi-frequency and multi-antenna devices to be used when large transmission volumes and There is a better play on the trend of high transmission speed. Therefore, this case allows users to avoid interference to the antenna caused by holding the tablet with both hands during operation, maintains good transmission performance and the best user experience, and greatly increases upload and download speeds and reception stability.

The above-mentioned embodiments are only for illustrating the technical ideas and characteristics of this case. Their purpose is to enable those familiar with this technology to understand the contents of this case and implement them accordingly. However, they cannot be used to limit the patent scope of this case. That is, generally speaking, according to this case Equal changes or modifications made to the spirit disclosed should still be covered by the patent application scope of this case.

10:Multi-frequency multi-antenna device 12:Media base 121: Base plate 121a: first surface 121b: Second surface 122:First side panel 123:Second side panel 124:Third side panel 125:Fourth side panel 14: Grounding part 16,18,20,22: First antenna module 201: First feed transmission line 202,203,204: First inverted F antenna 205:Slot Antenna 206:First metal branch 207:Second metal branch 208:The third metal branch 24,26,28,30,32,34,36,38: Second antenna module 241: Second feed transmission line 241a: meandering part 242,262: Monopole antenna 243,244: Second inverted F antenna 40,42,44,46: The third antenna module 421:Third feed transmission line 422:Third inverted F antenna 423: The fourth inverted F antenna Port A, Port B, Port C, Port D: first feed point Port 1, Port 2, Port 3, Port 4, Port 5, Port 6, Port 7, Port 8: Second feed point Port I, Port II, Port III, Port IV: third feed point

FIG. 1 is a schematic plan view of a multi-band multi-antenna device according to an embodiment of the present invention. Figure 2 is a schematic structural diagram of a multi-band multi-antenna device according to an embodiment of the present invention. Figure 3 is a bottom view of a multi-band multi-antenna device according to an embodiment of the present invention. FIG. 4 is a schematic structural diagram of a first antenna module according to an embodiment of the present invention. Figure 5 is a schematic diagram of the outer and bottom structures of the first antenna module according to an embodiment of the present invention. FIG. 6 is a schematic structural diagram of a second antenna module according to an embodiment of the present invention. FIG. 7 is a schematic diagram of the outer structure of a second antenna module according to an embodiment of the present invention. Figure 8 is a schematic structural diagram of a third antenna module according to an embodiment of the present invention. Figure 9 is a schematic diagram of the S-parameter (return loss) simulation generated by the first antenna module in the 5G (LB/MB) frequency band according to an embodiment of the present case. FIG. 10A and FIG. 10B are respectively schematic diagrams simulating the isolation between the first antenna module and the third antenna module according to an embodiment of the present invention. Figure 11 is a schematic diagram of the packet correlation coefficient (ECC) simulation generated by the first antenna module in the 5G (LB/MB) frequency band according to an embodiment of the present case. Figure 12 is a schematic diagram of the S-parameter (return loss) simulation generated by the second antenna module in the 5G-FR1 frequency band according to an embodiment of the present case. 13A and 13B are respectively schematic diagrams simulating the isolation between the second antenna module and the third antenna module and the first antenna module according to an embodiment of the present invention. Figure 14 is a schematic diagram of the packet correlation coefficient (ECC) simulation generated by the second antenna module in the 5G-FR1 frequency band according to an embodiment of the present case. Figure 15 is a schematic diagram of the S-parameter (return loss) simulation generated by the third antenna module in the Wi-Fi 6E frequency band according to an embodiment of the present case. 16A and 16B are respectively schematic diagrams simulating the isolation between the first antenna module and the second antenna group by the third antenna module according to an embodiment of the present invention. Figure 17 is a schematic diagram of the packet correlation coefficient (ECC) simulation generated by the third antenna module in the Wi-Fi 6E frequency band according to an embodiment of the present case.

10:Multi-frequency multi-antenna device

12:Media base

121: Base plate

121a: First surface

122:First side panel

123:Second side panel

124:Third side panel

125:Fourth side panel

16,18,20,22: First antenna module

24,26,28,30,32,34,36,38: Second antenna module

40,42,44,46: The third antenna module

Claims (11)

A multi-frequency multi-antenna device including: A media base includes a base plate and four side plates connected vertically on its four sides, and the base plate has a first surface and a second surface; a grounding portion provided on the second surface of the bottom plate; A plurality of first antenna modules, each of the first antenna modules includes a first feed transmission line, three first inverted F antennas and a slot antenna, the first feed transmission line has a first metal branch , a second metal branch and a third metal branch, the first feed transmission line is provided on the first surface and extends to the inner surface of the side plate, and the three first inverted F antennas are located on the outer surface of the side plate on the second surface and connected to the ground part, the slot antenna is disposed on the second surface and opened on the ground part, the first metal branch corresponds to the slot antenna to couple the slot antenna, and the second metal branch The path and the third metal branch are provided on the inner surface of the side plate to couple the three first inverted F antennas; A plurality of second antenna modules, each of the second antenna modules includes a second feed transmission line, a monopole antenna and two second inverted F antennas, the second feed transmission line is disposed on the first surface And the second feed transmission line has a meandering portion, the monopole antenna is located on the inner surface of the side plate and connected to the second feed transmission line, and the two second inverted F antennas are disposed on the outer surface of the side plate and connected to the The ground part, the two second inverted F antennas correspond to the monopole antenna, so as to use the monopole antenna to couple the two second inverted F antennas; and A plurality of third antenna modules, each of the third antenna modules includes a third feed transmission line, a third inverted F antenna and a fourth inverted F antenna, the third feed transmission line is disposed on the first surface , the third inverted F antenna is disposed on the inner surface of the side plate and connected to the third feed transmission line, the fourth inverted F antenna is disposed on the inner surface of the side plate and is spaced apart from one side of the third inverted F antenna, To use the third inverted F antenna to couple the fourth inverted F antenna; Wherein, the first antenna modules, the second antenna modules and the third antenna modules are symmetrically arranged on the bottom plate and the side plates of the dielectric base respectively. The multi-band multi-antenna device of claim 1, wherein the three first inverted F antennas extend from the outer surface of the side plate to the second surface and are connected to the ground portion. The multi-band multi-antenna device as claimed in claim 1, wherein the side plates include a first side plate, a second side plate, a third side plate and a fourth side plate, the first side plate is opposite to the third side plate, and The second side plate is relative to the fourth side plate. The first antenna modules are respectively arranged on the first surface, the first side plate and the third side plate. The second antenna modules are respectively arranged on the first surface, the first side plate and the third side plate. On the first surface, the second surface, the second side panel, and the fourth side panel, the third antenna modules are respectively disposed on the first surface, the first side panel, the second side panel, and the third side panel. The side plate and the fourth side plate allow each third antenna module to be located between the first antenna modules or between the second antenna modules respectively. The multi-frequency multi-antenna device as claimed in claim 1, wherein the first feed transmission line extends from a first feed point, the second feed transmission line extends from a second feed point, and the third feed transmission line extends from a second feed point. The three-feed transmission line extends from a third feed point. The multi-frequency multi-antenna device as claimed in claim 1, wherein in the first antenna module, the slot antenna is excited at a frequency band of 1.96 GHz, and the three first inverted F antennas are excited at 0.7 GHz and 0.81 GHz respectively. and 0.96 GHz frequency band, and the triple frequency modes of the three first inverted F antennas are excited in the 2.17 GHz, 2.31 GHz and 2.6 GHz frequency bands respectively. The multi-frequency multi-antenna device as claimed in claim 5, wherein the resonant path of the slot antenna is a length of 0.18 times the wavelength of the operating frequency, and the resonant paths of the three first inverted F antennas are respectively 0.16 times the wavelength of the operating frequency, The length of 0.16 times the wavelength and 0.22 times the wavelength. The multi-band multi-antenna device as claimed in claim 1, wherein in the second antenna module, the monopole antenna excites the 4 GHz frequency band, and the two second inverted F antennas excite the 3.5 GHz and 4.5 GHz frequency bands respectively. . The multi-frequency multi-antenna device as claimed in claim 7, wherein the resonant path of the monopole antenna is a length of 0.14 times the wavelength of the operating frequency, and the resonant paths of the two second inverted F antennas are respectively 0.23 times the wavelength of the operating frequency and 0.2 times the wavelength. The multi-band multi-antenna device as claimed in claim 1, wherein in the third antenna module, the third inverted F antenna is excited in the 5 GHz frequency band, and the fourth inverted F antenna is excited in the 2.4 GHz frequency band. The multi-frequency multi-antenna device as claimed in claim 9, wherein the resonance path of the third inverted F antenna is 0.21 times the wavelength of the operating frequency, and the resonance path of the fourth inverted F antenna is 0.18 times the wavelength of the operating frequency. length. The multi-band multi-antenna device as claimed in claim 1 is installed in a flat panel.

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