Antenna suitable for multi-antenna system

Abstract

The utility model discloses an antenna suitable for a multi-antenna system, relates to the technical field of antennas, and aims to solve the problems that a plurality of antennas are arranged in existing terminal equipment, different antennas need to be debugged to be matched with different frequency bands for use, and the operation is relatively inconvenient. A plurality of vibrator structures arranged side by side are fixedly suspended above a metal strip embedded in the top of a printed circuit board by using spring rods, and an adjusting screw rod and an extrusion push rod are arranged between the inner walls of a housing above the vibrator structures, and when the adjusting screw rod rotates to drive the extrusion push rod to sequentially slide across the tops of the vibrator structures arranged side by side, the vibrator structures are driven to rotate. The push rod can be extruded to press down the substrates of the corresponding sliding oscillator structures to be attached to the metal strip so as to complete line connection of the oscillator bodies and the metal strip on the substrates, and the antenna tuning switch chip changes the frequency response range of the antenna by using the number of lines accessed to the oscillator structures and the impedance between the oscillator bodies to adapt to different frequency bands of the antenna, so that the antenna tuning efficiency is improved. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, and specifically relates to an antenna applicable to a multi-antenna system. Background Technique

[0002] The rapid popularization of mobile communication technology has made communication between people overcome the barriers of time and space and become ubiquitous. The continuously updated electronic products have made real-time information acquisition and exchange possible, providing people with portable and efficient wireless communication services. As the terminal of the mobile communication network, the antenna is essential for these wireless communication services.

[0003] For example, CN218182469U discloses a wide-beam miniaturized circularly polarized antenna, which includes four oscillator arms, a circular metal barrel, a circular metal dielectric plate, and a Wilkinson feeding network. The circular metal dielectric plate divides the circular metal barrel into a forward circular metal barrel and a backward circular metal barrel. The Wilkinson feeding network is etched on a high-frequency dielectric plate and stacked together with the circular metal dielectric plate, and the oscillator arms are connected to the Wilkinson feeding network. However, at present, there are multiple antennas inside 5G terminals, and the antenna frequency range is between 600M and 6G. Different antennas need to be adjusted for different frequency bands, which is relatively inconvenient to use.

[0004] In view of the above problems, an antenna applicable to a multi-antenna system is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an antenna applicable to a multi-antenna system. By using this device to work, the problem that multiple antennas are set in the existing terminal device and different antennas need to be adjusted to match different frequency bands for use, and the operation is relatively inconvenient in the above background is solved.

[0006] To achieve the above object, the utility model provides the following technical solutions: An antenna applicable to a multi-antenna system, including a housing cover and a partition bottom plate fixedly fitted between the inner walls of the bottom port groove of the housing cover. A printed circuit board is fixedly connected to the top of the partition bottom plate. On both sides of the middle part of the upper end of the printed circuit board, strip-shaped holes are respectively opened. Metal strips are fitted in the strip-shaped holes and are electrically connected to the internal circuits of the printed circuit board. On the upper end of the printed circuit board outside the strip-shaped holes, oscillator structures are uniformly fixedly connected. The oscillator structures are suspended above the metal strips. At the top of one end of the printed circuit board, a feeding module is fixedly connected. At the connection point at the end of the feeding module, a feeding cable is fixedly connected. The end of the feeding cable penetrates through the side wall of the housing cover and extends to the outside thereof. At the top of the other end of the printed circuit board, an antenna tuning switch chip is fixedly connected. On the top of the printed circuit board adjacent to the antenna tuning switch chip, a microstrip ground wire is fixedly connected. The end of the microstrip ground wire penetrates through the side wall of the end of the housing cover and extends to the outside thereof. Between the inner walls of both ends of the housing cover above the oscillator structures, an adjusting screw rod is movably arranged. A pushing rod is movably sleeved on the outer wall of the adjusting screw rod. The lower end of the pushing rod is close to and suspended above the top of the oscillator structure.

[0007] The oscillator structure includes a substrate and an oscillator body with a fixed ring sleeved on the outer circumference of the substrate. On both sides of the bottom of the substrate, conductive bumps are respectively fixedly connected. At the four corners of the bottom of the substrate, mounting holes are respectively arranged. Spring rods are fixedly connected in the mounting holes. The lower ends of the spring rods are fixedly connected to the upper end of the printed circuit board outside the strip-shaped holes.

[0008] Further, the spring rod includes a fixed column fixedly connected to the top of the printed circuit board and a mounting cavity opened at the top of the fixed column. The top end of the fixed column is movably clamped in the mounting hole. A support spring is fixedly connected to the bottom plate of the mounting cavity. The top end of the support spring is fixedly connected to the lower end of the top plate of the mounting hole.

[0009] Further, the conductive bumps on both sides of the bottom of the substrate are respectively arranged corresponding to the metal strips on both sides of the top of the printed circuit board. When the support spring maintains a normal relaxed state, the bottom ends of the conductive bumps are suspended above the metal strips.

[0010] Further, the pushing rod includes a moving block movably sleeved on the outer wall of the adjusting screw rod and an L-shaped rod fixedly connected to the bottom of the moving block. At the bottom of the intersection end of the vertical rod and the horizontal rod of the L-shaped rod, a guiding inclined surface is arranged. The lower end of the horizontal rod of the L-shaped rod is close to and suspended above the top of the substrate. The top end of the moving block is attached to the lower end of the top plate of the housing cover.

[0011] Further, a transparent observation window is arranged at the top of the housing cover corresponding to the moving block. Observation markings are respectively arranged on both sides of the top of the housing cover of the transparent observation window. Each horizontal line of the observation markings corresponds to an oscillator structure. An indicating rod is fixedly connected to the top of the moving block. The top end of the indicating rod is attached to the bottom plate of the transparent observation window.

[0012] Furthermore, heat dissipation micro-holes are evenly formed on the outer walls on both sides at the two ends of the shell cover, and an inner groove is provided on the top of the printed circuit board between the power feeding module and the metal strip, and heat dissipation silicone grease is coated on the bottom plate of the inner groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] An antenna applicable to a multi-antenna system proposed by the present utility model, in the cavity formed by the shell cover and the partition bottom plate, above the metal strip fitted on the top of the printed circuit board, a plurality of oscillator structures arranged side by side are fixed and suspended by spring rods, and an adjusting screw rod and a pushing rod are arranged between the inner walls of the shell cover above the oscillator structures. When the adjusting screw rod rotates to drive the pushing rod to slide over the tops of the oscillator structures arranged in a row in sequence, the pushing rod can press down the substrates of the corresponding oscillator structures that have slid over to fit the metal strip, so as to complete the circuit connection between the oscillator bodies on the plurality of substrates and the metal strip. The antenna tuning switch chip changes the frequency response range of the antenna by using the number of oscillator structures connected to the circuit and the impedance between the oscillator bodies, adapts to different frequency bands of the antenna, and realizes the purpose of multiple antennas inside the 5G terminal device with one type of oscillator, which is convenient to use. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the assembly structural schematic diagram of the shell cover, printed circuit board and partition bottom plate of the present utility model;

[0017] Figure 3 is the structural schematic diagram of the oscillator structure of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the spring rod of the present utility model;

[0019] Figure 5 is the structural schematic diagram of the pushing rod of the present utility model;

[0020] Figure 6 is the S-parameter characteristic schematic diagram of the single oscillator structure of the present utility model;

[0021] Figure 7 is the S-parameter characteristic schematic diagram of the double oscillator structure of the present utility model;

[0022] Figure 8 is the S-parameter characteristic schematic diagram of the triple oscillator structure of the present utility model.

[0023] In the figure: 1. Shell cover; 11. Adjusting screw rod; 12. Extrusion push rod; 121. Moving block; 122. L-shaped rod; 123. Guiding inclined plane; 124. Indicator rod; 13. Transparent observation window; 14. Observation marking line; 15. Heat dissipation micro-holes; 2. Partition bottom plate; 3. Printed circuit board; 31. Inner groove; 32. Heat dissipation silicone grease; 4. Metal strip; 5. Oscillator structure; 51. Substrate; 52. Oscillator body; 53. Conductive bump; 54. Mounting hole; 55. Spring rod; 551. Fixed column; 552. Mounting cavity; 553. Support spring; 6. Feeding module; 7. Feeding cable; 8. Antenna tuning switch chip; 9. Microstrip ground wire. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0026] Combined with Figure 1 and Figure 2 , an antenna applicable to a multi-antenna system of the present invention includes components such as a shell cover 1, a partition bottom plate 2, a printed circuit board 3, a metal strip 4, an oscillator structure 5, a feeding module 6, a feeding cable 7, an antenna tuning switch chip 8, and a microstrip ground wire 9. The inner wall of the bottom port groove of the square shell cover 1 is fixedly connected with the partition bottom plate 2 by screws. The partition bottom plate 2 is fixedly connected with the printed circuit board 3 at the top. Heat dissipation micro-holes 15 are evenly opened on both outer walls at both ends of the shell cover 1, and a waterproof and breathable film is fixedly attached to the inner wall of the shell cover 1 at the port of the heat dissipation micro-holes 15.

[0027] Next, the present invention will be further described in conjunction with the embodiments.

[0028] In order to solve the problem that when multiple antennas are arranged in existing terminal devices, it is necessary to debug different antennas to match different frequency bands for use, and the operation is relatively inconvenient. Please refer to Figures 1-8 , the following preferred technical solutions are provided:

[0029] Strip holes are respectively provided on both sides of the middle of the upper end of the printed circuit board 3, and metal strips 4 are embedded in the strip holes. The metal strips 4 are electrically connected to the internal circuits of the printed circuit board 3. After the two metal strips 4 are electrically connected to the internal circuits of the printed circuit board 3, a parallel circuit is formed. The upper end of the printed circuit board 3 outside the strip holes is evenly fixedly connected with a vibrator structure 5, and the vibrator structure 5 is suspended above the metal strips 4. A feeding module 6 is fixedly connected to the top of one end of the printed circuit board 3, and a feeding cable 7 is fixedly connected to the connection point at the end of the feeding module 6. The end of the feeding cable 7 passes through the side wall of the shell cover 1 and extends to the outside thereof. An antenna tuning switch chip 8 is fixedly connected to the top of the other end of the printed circuit board 3. The antenna tuning switch chip 8 is fixedly connected to the antenna tuning switch chip 8. The tuning switch chip 8 serves as an impedance matching network connecting the RF transceiver chip and the antenna. By adjusting the impedance state of the antenna, it can be better matched with the RF front-end circuit. A microstrip ground wire 9 is fixedly connected to the top of the printed circuit board 3 adjacent to the antenna tuning switch chip 8. The end of the microstrip ground wire 9 penetrates the side wall of the end of the shell cover 1 and extends to the outside thereof. The end of the microstrip ground wire 9 is used for grounding after passing through the shell cover 1. An adjusting screw 11 is movably provided between the inner walls at both ends of the shell cover 1 above the vibrator structure 5. One end of the adjusting screw 11 penetrates and extends to the outside of the side wall of the end of the shell cover 1. A push rod 12 is movably sleeved on the outer wall of the adjusting screw 11. The lower end of the push rod 12 is suspended close to the top of the vibrator structure 5.

[0030] The vibrator structure 5 includes a substrate 51 and a vibrator body 52 fixedly sleeved on the circumferential outer wall of the substrate 51, conductive bumps 53 are fixedly connected to both sides of the bottom of the substrate 51, and mounting holes 54 are respectively provided at the four corners of the bottom of the substrate 51. A spring rod 55 is fixedly connected in the mounting hole 54, and the lower end of the spring rod 55 is fixedly connected to the upper end of the printed circuit board 3 outside the strip hole. The vibrator structure 5 is a 4.4g-5GHz array unit, which is used in the n79 frequency band; when the number of vibrator units is 2, the frequency range of the antenna becomes a 2.5-2.7G antenna, which is used in the n41 frequency band; when the number of vibrator units is 3 and the antenna end is grounded, the frequency range of the antenna becomes a 3.3-3.8G antenna, which is used in the n78 frequency band.

[0031] like Figure 4 As shown, the spring rod 55 includes a fixing column 551 fixedly connected to the top of the printed circuit board 3 and a mounting cavity 552 opened at the top of the fixing column 551. The top of the fixing column 551 is movably engaged in the mounting hole 54. A supporting spring 553 is fixedly connected to the bottom plate of the mounting cavity 552. The top of the supporting spring 553 is fixedly connected to the lower end of the top plate of the mounting hole 54. The conductive protrusions 53 on both sides of the bottom of the substrate 51 are respectively arranged corresponding to the metal strips 4 on both sides of the top of the printed circuit board 3. When the supporting spring 553 maintains a normal relaxation state, the bottom end of the conductive protrusion 53 is suspended above the metal strip 4.

[0032] The pushing rod 12 includes a moving block 121 movably clamped on the outer wall of the adjusting screw 11 and an L-shaped rod 122 fixedly connected to the bottom of the moving block 121. A guiding slope 123 is provided at the bottom of the intersection of the vertical rod and the horizontal rod of the L-shaped rod 122. The lower end of the horizontal rod of the L-shaped rod 122 is suspended close to the top of the base plate 51, and the top end of the moving block 121 is arranged to fit the lower end of the top plate of the shell cover 1.

[0033] A transparent observation window 13 is provided at the top of the shell cover 1 corresponding to the moving block 121. The transparent observation window 13 is composed of a through groove opened on the top plate of the shell cover 1 and a transparent plate fixed between the inner walls of the through groove. Observation marking lines 14 are respectively provided at the top of the shell cover 1 on both sides of the transparent observation window 13. Each horizontal line of the observation marking line 14 corresponds to a vibrator structure 5. An indicator rod 124 is fixedly connected to the top of the moving block 121. The top of the indicator rod 124 is set in contact with the bottom plate of the transparent observation window 13. When the adjusting screw 11 rotates, the top of the moving block 121 is in contact with the lower end of the top plate of the shell cover 1, and the moving block 121 moves left and right on the outer wall of the adjusting screw 11. When the moving block 121 moves, the guiding inclined surface 123 at the bottom end of the L-shaped rod 122 is used to move along the vibrator. The top edge of the structure 5 moves toward the other end. When moving, the vibrator structure 5 is squeezed downward by the guiding inclined surface 123 to compress the spring rod 55, thereby pressing the arranged vibrator structures 5 down in turn to fit the metal strip 4, completing the parallel connection between the vibrator structure 5 and the internal circuit of the printed circuit board 3. The vibrator structure 5 connected to the circuit is always pressed on the bottom of the cross bar of the L-shaped rod 122. When the moving block 121 drives the L-shaped rod 122 to squeeze the vibrator structure 5, the top of the indicating mark 124 slides in the through groove of the transparent observation window 13. When the movement stops, the indicating mark 124 coincides with a certain horizontal line of the corresponding observation mark 14. By observing the horizontal line number of the observation mark 14 pointed by the indicating mark 124, the number of vibrator structures 5 connected to the circuit can be known.

[0034] like Figure 2 As shown, an inner groove 31 is provided on the top of the printed circuit board 3 between the feeding module 6 and the metal strip 4, and a heat dissipation silicone grease 32 is coated on the bottom plate of the inner groove 31, and the heat dissipation silicone grease 32 is used to assist the printed circuit board 3 to dissipate heat quickly.

[0035] Specifically, the feeding cable 7 and the feeding module 6 are connected to the transmission end for transmitting energy and signals to the printed circuit board 3. When the antenna frequency band needs to be adjusted, the adjusting screw 11 is rotated. When the adjusting screw 11 rotates, the moving block 121 on its outer wall is driven to move left and right in contact with the lower end of the top plate of the shell cover 1. When the moving block 121 moves, it pushes the L-shaped rod 122 to slide over the top of the vibrator structure 5 arranged in a row on the top of the printed circuit board 3. The guiding inclined surface 123 at the bottom end of the L-shaped rod 122 is used to move along the edge of one end of the top of the substrate 51 to the other end, and at the same time, the substrate 51 is pushed downward, so that the substrate 51 compresses the support spring 553 in the bottom mounting hole 54, thereby the two sides of the bottom of the substrate 51 are The lower end of the conductive bump 53 is squeezed and fitted to the metal strips 4 on both sides of the top of the printed circuit board 3 to complete the circuit access of the vibrator body 52 on a single substrate 51. When the L-shaped rod 122 slides over the top of the vibrator structures 5 arranged in a row in sequence with the moving block 121, the L-shaped rod 122 can press down the substrates 51 of the corresponding vibrator structures 5 that have slid over to fit the metal strips 4 to complete the line connection between the vibrator bodies 52 on multiple substrates 51 and the metal strips 4. The antenna tuning switch chip 8 uses the number of lines accessed by the vibrator structure 5 and the impedance between the vibrator bodies 52 to change the frequency response range of the antenna, adapt to different frequency bands of the antenna, and achieve the purpose of multiple antennas inside the 5G terminal device with one vibrator, which is easy to use.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antenna applicable to a multi-antenna system, comprising a housing (1) and a partition bottom plate (2) fixedly fitted between the inner walls of the bottom port slots of the housing (1), wherein a printed circuit board (3) is fixedly connected to the top of the partition bottom plate (2), and is characterized in that: On both sides of the middle part of the upper end of the printed circuit board (3), strip-shaped holes are respectively formed. A metal strip (4) is fitted in the strip-shaped holes. The metal strip (4) is electrically connected to the internal circuit of the printed circuit board (3). On the upper end of the printed circuit board (3) outside the strip-shaped holes, oscillator structures (5) are evenly fixedly connected. The oscillator structures (5) are suspended above the metal strip (4). On the top of one end of the printed circuit board (3), a feeding module (6) is fixedly connected. At the connection point at the end of the feeding module (6), a feeding cable (7) is fixedly connected. The end of the feeding cable (7) penetrates through the side wall of the shell cover (1) and extends to the outside thereof. On the top of the other end of the printed circuit board (3), an antenna tuning switch chip (8) is fixedly connected. On the top of the printed circuit board (3) adjacent to the antenna tuning switch chip (8), a microstrip ground wire (9) is fixedly connected. The end of the microstrip ground wire (9) penetrates through the end side wall of the shell cover (1) and extends to the outside thereof. Between the inner walls of the two ends of the shell cover (1) above the oscillator structure (5), an adjusting screw rod (11) is movably arranged. An extrusion push rod (12) is movably sleeved on the outer wall of the adjusting screw rod (11). The lower end of the extrusion push rod (12) is close to and suspended above the top of the oscillator structure (5). The oscillator structure (5) includes a substrate (51) and an oscillator body (52) with a fixing ring sleeved on the outer circumferential wall of the substrate (51). On both sides of the bottom of the substrate (51), conductive bumps (53) are respectively fixedly connected. At the four corners of the bottom of the substrate (51), mounting holes (54) are respectively arranged. A spring rod (55) is fixedly connected in the mounting holes (54). The lower end of the spring rod (55) is fixedly connected to the upper end of the printed circuit board (3) outside the strip-shaped holes.

2. An antenna applicable to a multi-antenna system according to claim 1, characterized in that: The spring rod (55) includes a fixing column (551) fixedly connected to the top of the printed circuit board (3) and a mounting cavity (552) formed at the top of the fixing column (551). The top end of the fixing column (551) is movably clamped in the mounting hole (54). A support spring (553) is fixedly connected to the bottom plate of the mounting cavity (552). The top end of the support spring (553) is fixedly connected to the lower end of the top plate of the mounting hole (54).

3. The antenna applicable to a multi-antenna system according to claim 2, wherein: The conductive bumps (53) on both sides of the bottom of the substrate (51) are respectively arranged corresponding to the metal strips (4) on both sides of the top of the printed circuit board (3). When the support spring (553) maintains a normal diastolic state, the bottom end of the conductive bump (53) is suspended above the metal strip (4).

4. An antenna applicable to a multi-antenna system according to claim 1, characterized in that: The extrusion push rod (12) includes a moving block (121) movably sleeved on the outer wall of the adjusting screw rod (11) and an L-shaped rod (122) fixedly connected to the bottom of the moving block (121). At the bottom of the intersection of the vertical rod and the horizontal rod of the L-shaped rod (122), a guiding inclined surface (123) is arranged. The lower end of the horizontal rod of the L-shaped rod (122) is close to and suspended above the top of the substrate (51). The top end of the moving block (121) is attached to the lower end of the top plate of the shell cover (1).

5. An antenna applicable to a multi-antenna system according to claim 4, characterized in that: A transparent observation window (13) is arranged at the top of the shell cover (1) corresponding to the moving block (121), observation marking lines (14) are arranged at the top of the shell cover (1) on both sides of the transparent observation window (13), each horizontal line of the observation marking lines (14) corresponds to a vibrator structure (5), and an indicator rod (124) is fixedly connected to the top of the moving block (121), and the top of the indicator rod (124) is arranged to fit the bottom plate of the transparent observation window (13).

6. An antenna applicable to a multi-antenna system according to claim 1, characterized in that: Heat dissipation micro-holes (15) are evenly provided on the outer walls of both ends of the shell cover (1), and an inner groove (31) is provided on the top of the printed circuit board (3) between the feed module (6) and the metal strip (4), and the bottom plate of the inner groove (31) is coated with heat dissipation silicone grease (32).

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