Integrated multi-feed antenna

Abstract

The invention provides an integrated multi-feed antenna. The integrated multi-feed antenna comprises a first conductor layer, a second conductor layer and a plurality of feed conductor wires, the second conductor layer has a first central position. And the second conductor layer is provided with a closed slot structure. The closed slot structure surrounds the first central position to form a central area. A first distance is arranged between the second conductor layer and the first conductor layer. Each of the plurality of feed-in conductor lines has one end electrically connected or electrically coupled to the second conductor layer, and has the other end electrically connected to a signal source. The plurality of feed-in conductor wires respectively excite the second conductor layer to generate at least one respective resonance mode. The plurality of resonance modes cover at least one same wireless communication frequency band.

Description

Technical Field

[0001] The present invention relates to a multi-feed antenna design, and more particularly to a multi-feed antenna architecture capable of achieving high integration. Background Art

[0002] In order to improve the quality of wireless communication and the data transmission rate, the application of multi-input multi-output (MIMO) multi-antenna arrays, reconfigurable multi-antenna array architectures, and high-gain multi-antenna arrays has become widespread. Therefore, the co-construction design of multi-antenna with high integration advantages has become one of the popular research topics. However, how to successfully design broadband antenna elements into a highly integrated multi-antenna array while achieving good matching and good isolation is a technical challenge that is not easy to overcome.

[0003] Integrating multiple antennas operating in the same frequency band into an antenna array may cause problems of mutual coupling interference, resulting in poor isolation between the multi-antenna feed ports, and further leading to attenuation of radiation characteristics and antenna efficiency. It also causes a decrease in data transmission speed, increasing the difficulty of realizing multi-antenna integration. Some prior art documents have proposed designing a resonance structure on the ground between multi-antennas as a coupling energy isolator to improve the energy isolation design between multi-antennas. However, such a design method may cause the excitation of additional coupling currents, resulting in an increase in the correlation coefficient between multi-antennas. It may also increase the overall size of the multi-antenna array, causing unstable factors in the manufacturing process, and further increasing the mass production cost. Therefore, it is less likely to be widely implemented in various communication devices or apparatuses.

[0004] Therefore, a highly integrated antenna array design method that can solve the above problems is needed to meet the actual application requirements of future high-data transmission communication devices or equipment. Summary of the Invention

[0005] In view of this, embodiments of the present invention disclose an integrated multi-feed antenna. Some implementation examples according to the embodiments can solve the above technical problems.

[0006] According to an embodiment, the present invention provides an integrated multi-feed antenna. The multi-feed antenna array includes a first conductor layer, a second conductor layer, and a plurality of feed conductor lines. The second conductor layer has a first central position. The second conductor layer further has a closed slot structure. The closed slot structure surrounds the first central position to enclose a central region. There is a first spacing between the second conductor layer and the first conductor layer. Each of the plurality of feed conductor lines has one end electrically connected or coupled to the second conductor layer, and each has the other end electrically connected to a signal source. Each of the plurality of feed conductor lines excites the second conductor layer to generate at least one respective resonance mode. The plurality of resonance modes cover at least one same wireless communication frequency band.

[0007] For a better understanding of the above and other aspects of this case, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings as follows: Description of the Drawings

[0008] Figure 1A Structural diagram of the integrated multi-feed antenna 1 according to an embodiment of the present invention;

[0009] Figure 1B Return loss curve diagram of the integrated multi-feed antenna 1 according to an embodiment of the present invention;

[0010] Figure 1C Isolation curve diagram of the integrated multi-feed antenna 1 according to an embodiment of the present invention;

[0011] Figure 2A Structural diagram of the integrated multi-feed antenna 2 according to an embodiment of the present invention;

[0012] Figure 2B Return loss curve diagram of the integrated multi-feed antenna 2 according to an embodiment of the present invention;

[0013] Figure 2C Isolation curve diagram of the integrated multi-feed antenna 2 according to an embodiment of the present invention;

[0014] Figure 2D Radiation efficiency curve diagram of the integrated multi-feed antenna 2 according to an embodiment of the present invention;

[0015] Figure 3 Structural diagram of the integrated multi-feed antenna 3 according to an embodiment of the present invention;

[0016] Figure 4 Structural diagram of the integrated multi-feed antenna 4 according to an embodiment of the present invention;

[0017] Figure 5 Structural diagram of the integrated multi-feed antenna 4 configured with multiple groups to form the integrated multi-feed antenna array 5 according to an embodiment of the present invention.

[0018] Description of Reference Numerals

[0019] 1, 2, 3, 4: Integrated Multi-Feed Antenna

[0020] 11, 21, 31, 41, 51: First Conductor Layer

[0021] 12, 22, 32, 42: Second Conductor Layer

[0022] 121, 221, 321, 421: First Central Position

[0023] 122, 222, 322, 422: Enclosed Slot Structure

[0024] 123, 223, 323, 423: Central Region

[0025] 131, 132, 133, 231, 232, 331, 332, 431, 432, 433: Feed Conductor Line

[0026] 141, 142, 143, 241, 242, 341, 342, 441, 442, 443: Signal Source

[0027] 1411, 1421, 1431, 2411, 2421: Return Loss Curve of Resonance Mode

[0028] 1412, 1413, 1423, 2412: Isolation Curve

[0029] 24111, 24211: Radiation Efficiency Curve

[0030] 15, 25: Wireless Communication Band

[0031] 26, 46: Third Conductor Layer

[0032] 261, 461: Second Central Position

[0033] 3221, 3222: Electrical Short Circuit Structure

[0034] 3231: Central Slot Structure

[0035] 4232: Ground Conductor Line

[0036] 5: Integrated Multi-Feed Antenna Array

[0037] d1: First Spacing

[0038] d2: Second Spacing

[0039] s1: Slot Spacing

[0040] s131, s132, s133: Coupling Spacing Detailed implementation mode

[0041] Figure 1A This is a structural diagram of the integrated multi-feed antenna 1 according to an embodiment of the present invention. As Figure 1A shown, the integrated multi-feed antenna 1 includes a first conductor layer 11, a second conductor layer 12, and a plurality of feed conductor lines 131, 132, 133. The second conductor layer 12 has a first central position 121. The second conductor layer 12 further has a closed slot structure 122. The closed slot structure 122 surrounds the first central position 121 to enclose a central region 123. There is a first distance d1 between the second conductor layer 12 and the first conductor layer 11. Each of the plurality of feed conductor lines 131, 132, 133 has one end electrically coupled to the second conductor layer 12 and the other end electrically connected to a signal source 141, 142, 143 respectively. Each of the plurality of feed conductor lines 131, 132, 133 respectively excites the second conductor layer 12 to generate at least its own resonance modes 1411, 1421, 1431 (as Figure 1B shown), and the plurality of resonance modes 1411, 1421, 1431 cover at least one same wireless communication frequency band 15 (as Figure 1B shown).

[0042] Among them, the closed slot structure 122 has a slot pitch s1, and the slot pitch s1 is between the wireless communication frequency band 15 (as Figure 1BAs shown, it is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of 4.6 GHz to 4.9 GHz. The area of the central region 123 is smaller than the area of the second conductor layer 12, and the area of the central region 123 is between 0.01 times and 0.43 times the area of the second conductor layer 12. The area of the second conductor layer 12 is smaller than the area of the first conductor layer 11, and the area of the second conductor layer 12 is between the square of 0.13 wavelength and the square of 0.79 wavelength of the lowest operating frequency of the wireless communication band 15. The area of the central region 123 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band 15. The number of the plurality of feeding conductor lines 131, 132, 133 is 3. The number of the plurality of feeding conductor lines 131, 132, 133 is greater than 1 and less than or equal to 5. The plurality of feeding conductor lines 131, 132, 133 are located between the first conductor layer 11 and the second conductor layer 12. Each of the plurality of feeding conductor lines 131, 132, 133 has one end electrically coupled to the second conductor layer 12, and there is a coupling spacing s131, s132, s133 between each of the plurality of feeding conductor lines 131, 132, 133 and the second conductor layer 12. The coupling spacing s131, s132, s133 is between 0.005 wavelength and 0.19 wavelength of the lowest operating frequency of the wireless communication band 15. The first spacing d1 is between 0.0023 wavelength and 0.29 wavelength of the lowest operating frequency of the wireless communication band 15. The signal sources 141, 142, 143 are transmission lines, impedance matching circuits, amplifier circuits, feeding networks, switch circuits, connector components, filter circuits, integrated circuit chips or radio frequency front-end modules. When the integrated multi-feed antenna 1 is actually applied, it can be made and assembled by but not limited to printed circuit board manufacturing processes, conductor part cutting manufacturing processes, plastic injection molding manufacturing processes and plastic metallization manufacturing processes. The integrated multi-feed antenna 1 can be configured with multiple groups to form an integrated multi-feed antenna array, and is applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system or a beamforming antenna system, or is electrically connected through a transmission line or a radio frequency feeding network to improve the radiation gain.

[0043] Figure 1A In an embodiment of the present invention, the integrated multi-feed antenna 1 is designed such that the second conductor layer 12 has a closed slot structure 122, and the closed slot structure 122 surrounds the first central position 121 to enclose a central region 123. And the closed slot structure 122 is designed to have a slot spacing s1, and the slot spacing s1 is between the wireless communication band 15 (such as Figure 1BAs shown, between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency (4.6 GHz to 4.9 GHz), it is possible to effectively suppress the energy coupling degree of the resonance currents excited by the multiple feeding conductor lines 131, 132, and 133 in the second conductor layer 12, and successfully achieve a good isolation degree among the multiple resonance modes 1411, 1421, and 1431 (as Figure 1C shown), achieving the technical effect of co - structuring and integrating multiple signal sources. And the area of the central region 123 is designed to be between 0.01 times and 0.43 times the area of the second conductor layer 12. And the area of the central region 123 is designed to be between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band 15. It is possible to optimize the input impedance between the multiple feeding conductor lines 131, 132, and 133 and the second conductor layer 12, and successfully achieve a good impedance matching degree among the multiple resonance modes 1411, 1421, and 1431 (as Figure 1B shown). Therefore, an integrated multi - feeding antenna 1 according to an embodiment of the present invention can successfully achieve the technical effect of multi - antenna compatible integration. The integrated multi - feeding antenna 1 can be configured in multiple groups to form an integrated multi - feeding antenna array, and is applied to a multiple - input multiple - output antenna system, a pattern - switching antenna system, or a beam - forming antenna system, or is electrically connected through a transmission line or a radio - frequency feeding network to improve the radiation gain.

[0044] Figure 1B This is the return loss curve graph of the integrated multi - feeding antenna 1 according to an embodiment of the present invention. It is realized by selecting the conductor part cutting and manufacturing process for assembly, and the following dimensions are used for experiments: the distance of the slot pitch s1 is about 0.89 mm; the distance of the first pitch d1 is about 8.3 mm; the area of the central region 123 is about 15.2 mm 2 ; the area of the second conductor layer 12 is about 641.1 mm 2 ; the distances of the coupling pitches s131, s132, and s133 are all about 1.6 mm. As Figure 1B shown, each of the multiple feeding conductor lines 131, 132, and 133 successfully excites at least one well - matched resonance mode 1411, 1421, and 1431 respectively in the second conductor layer 12 (as Figure 1B shown), covering at least one same wireless communication band 15 (as Figure 1B shown, 4.6 GHz to 4.9 GHz). In this embodiment, the frequency range of the wireless communication band 15 is 4.6 GHz to 4.9 GHz, and the lowest operating frequency of the first communication band 15 is 4.6 GHz. Figure 1CIs the isolation degree curve graph of the integrated multi-feed antenna 1 according to an embodiment of the present invention. As shown in FIG. 1C, the isolation degree curve between the signal source 141 and the signal source 142 is 1412, the isolation degree curve between the signal source 141 and the signal source 143 is 1413, and the isolation degree curve between the signal source 142 and the signal source 143 is 1423. As shown in FIG. 1D, good isolation degrees can be achieved between the multi-feed signal source 141 of the integrated multi-feed antenna 1 and the signal source 142 and the signal source 143.

[0045] Figure 1B 、 Figure 1C The communication frequency band operations and experimental data covered are only for experimental verification Figure 1A the technical effects of the integrated multi-feed antenna 1 according to an embodiment of the present invention. It is not used to limit the communication frequency band operations, applications, and specifications that the integrated multi-feed antenna 1 of the present invention can cover in actual application scenarios. The integrated multi-feed antenna can be configured in multiple groups to form an integrated multi-feed antenna array, and is applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system, a beamforming antenna system, or to improve the radiation gain through electrical connection of a transmission line or a radio frequency feed network.

[0046] Figure 2A Is the structural diagram of the integrated multi-feed antenna 2 according to an embodiment of the present invention. As Figure 2A shown, the integrated multi-feed antenna 2 includes a first conductor layer 21, a second conductor layer 22, and a plurality of feed conductor lines 231, 232. The second conductor layer 22 has a first central position 221. The second conductor layer 22 further has a closed slot structure 222. The closed slot structure 222 surrounds the first central position 221 to enclose a central region 223. There is a first distance d1 between the second conductor layer 22 and the first conductor layer 21. Each of the plurality of feed conductor lines 231, 232 has one end electrically connected to the second conductor layer 22 and the other end electrically connected to a signal source 241, 242. Each of the plurality of feed conductor lines 231, 232 respectively excites the second conductor layer 22 to generate at least respective resonance modes 2411, 2421, and the plurality of resonance modes 2411, 2421 cover at least one same wireless communication frequency band 25 (such as Figure 2BAs shown. The integrated multi-feed antenna 2 of the embodiment has a third conductor layer 26, with the second conductor layer 22 located between the first conductor layer 21 and the third conductor layer 26, and there is a second spacing d2 between the third conductor layer 26 and the second conductor layer 22. The second spacing d2 is between 0.011 wavelength and 0.23 wavelength of the lowest operating frequency of the wireless communication band 25. The area of the third conductor layer 26 is smaller than the area of the first conductor layer 21, and the area of the third conductor layer 26 is between the square of 0.13 wavelength and the square of 0.83 wavelength of the lowest operating frequency of the wireless communication band 25. The third conductor layer 26 has a second center position 261, and the second center position 261 is aligned with the first center position 221 of the second conductor layer 22.

[0047] Wherein, the closed slot structure 222 has a slot spacing s1, and the slot spacing s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band 25 (as Figure 2B shown, 3.3 GHz to 3.8 GHz). The area of the central region 223 is smaller than the area of the second conductor layer 22, and the area of the central region 223 is between 0.01 times and 0.43 times the area of the second conductor layer 22. The area of the second conductor layer 22 is smaller than the area of the first conductor layer 21, and the area of the second conductor layer 22 is between the square of 0.13 wavelength and the square of 0.79 wavelength of the lowest operating frequency of the wireless communication band 25. The area of the central region 223 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band 25. The number of the plurality of feed conductor lines 231, 232 is 2. The number of the plurality of feed conductor lines 231, 232 is greater than 1 and less than or equal to 5. The plurality of feed conductor lines 231, 232 are located between the first conductor layer 21 and the second conductor layer 22. Each of the plurality of feed conductor lines 231, 232 has one end electrically connected to the second conductor layer 22. The first spacing d1 is between 0.0023 wavelength and 0.29 wavelength of the lowest operating frequency of the wireless communication band 25. The signal sources 241, 242 are transmission lines, impedance matching circuits, amplifier circuits, feed networks, switch circuits, connector elements, filter circuits, integrated circuit chips or radio frequency front-end modules. When the integrated multi-feed antenna 2 is actually applied, it can be made and assembled by but not limited to the circuit board manufacturing process, the conductor part cutting manufacturing process, or the plastic injection molding manufacturing process and the plastic metallization manufacturing process. The integrated multi-feed antenna 2 can be configured with multiple groups to form an integrated multi-feed antenna array, applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system or a beamforming antenna system, or electrically connected through a transmission line or a radio frequency feed network to improve the radiation gain.

[0048] Figure 2A In an embodiment of the present invention, the integrated multi-feed antenna 2, although it is designed such that the plurality of feed conductor lines 231, 232 are each electrically connected to the second conductor layer 22, and is designed to have a third conductor layer 26, with the second conductor layer 22 located between the first conductor layer 21 and the third conductor layer 26, is not exactly the same as the integrated multi-feed antenna 1 of the embodiment. However, the integrated multi-feed antenna 2 also, by designing the second conductor layer 22 to have a closed slot structure 222, and designing the closed slot structure 222 to surround the first central position 221 to enclose and form a central region 223. And designing the closed slot structure 222 to have a slot pitch s1, where the slot pitch s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band 25, can effectively suppress the energy coupling degree of the resonance currents excited by the plurality of feed conductor lines 231, 232 on the second conductor layer 22, successfully achieving a good isolation degree between the plurality of resonance modes 2411, 2421 (as Figure 2C shown), achieving the technical effect of the co-construction and integration of multiple signal sources 241, 242. And designing the area of the central region 223 to be between 0.01 times and 0.43 times the area of the second conductor layer 22. And designing the area of the central region 223 to be between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band 25. It can optimize the input impedance between the plurality of feed conductor lines 231, 232 and the second conductor layer 22, successfully achieving a good impedance matching degree between the plurality of resonance modes 2411, 2421 (as Figure 2B shown). Therefore, the integrated multi-feed antenna 2 of an embodiment of the present invention can also successfully achieve the same technical effect of multi-antenna compatible integration as the integrated multi-feed antenna 1 of the embodiment. The integrated multi-feed antenna 2 can also be configured in multiple groups to form an integrated multi-feed antenna array, and is applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system, a beamforming antenna system, or to improve the radiation gain by electrically connecting through a transmission line or a radio frequency feed network.

[0049] Figure 2B This is the return loss curve graph of the integrated multi-feed antenna 2 of an embodiment of the present invention. It is realized by selecting the printed circuit board (Dk value is about 3.48; Df value is about 0.003) manufacturing process for production and assembly, and the following dimensions are used for the experiment: the distance of the slot pitch s1 is about 0.33 mm; the distance of the first pitch d1 is about 1 mm; the area of the central region 223 is about 12.6 mm 2 ; the area of the second conductor layer 22 is about 530.7 mm 2; The area of the third conductor layer 26 is approximately 855.3 mm 2 ; The distance of the second spacing d2 is approximately 5.5 mm. As Figure 2B shown, each of the plurality of feeding conductor lines 231, 232 successfully excites the second conductor layer 22 to generate at least one well-matched resonance mode 2411, 2421 respectively (as Figure 2B shown), covering at least one identical wireless communication frequency band 25 (as Figure 2B shown, 3.3 GHz to 3.8 GHz). In this embodiment, the frequency band range of the wireless communication frequency band 25 is 3.3 GHz to 3.8 GHz, and the lowest operating frequency of the first communication frequency band 25 is 3.3 GHz. Figure 2C This is the isolation degree curve graph of the integrated multi-feeding antenna 2 according to an embodiment of the present invention. As shown in Figure 2C, the isolation degree curve between the signal source 241 and the signal source 242 is 2412. As Figure 2C shown, good isolation degrees can be achieved between the multi-feeding signal source 241 of the integrated multi-feeding antenna 2 and the signal source 242. Figure 2D This is the radiation efficiency curve graph of the integrated multi-feeding antenna 2 according to an embodiment of the present invention. The radiation efficiency curve of the signal source 241 is 24111, and the radiation efficiency curve of the signal source 242 is 24211. As shown in Figure 2D, the resonance modes 2411, 2421 of the integrated multi-feeding antenna 2 can both achieve good radiation efficiencies.

[0050] Figure 2B 、 Figure 2C 、 Figure 2D The communication frequency band operations and experimental data covered by Figure 2A are only for experimentally demonstrating the technical effects of the integrated multi-feeding antenna 2 according to an embodiment of the present invention in

[0051] Figure 3 This is the structural diagram of the integrated multi-feeding antenna 3 according to an embodiment of the present invention. As Figure 3As shown, the integrated multi-feed antenna 3 includes a first conductor layer 31, a second conductor layer 32, and a plurality of feed conductor lines 331, 332. The second conductor layer 32 has a first central position 321. The second conductor layer 32 further has a closed slot structure 322. The closed slot structure 322 surrounds the first central position 321 to enclose a central region 323. The central region 323 has a central slot structure 3231. The closed slot structure 322 has two electrical shorting structures 3221, 3222. The electrical shorting structures 3221, 3222 electrically connect the central region 323 to the second conductor layer 32. There is a first spacing d1 between the second conductor layer 32 and the first conductor layer 31. Each of the plurality of feed conductor lines 331, 332 has one end electrically connected to the second conductor layer 32 and the other end electrically connected to a signal source 341, 342. Each of the plurality of feed conductor lines 331, 332 excites the second conductor layer 32 to generate at least one resonance mode for each, and the plurality of resonance modes cover at least one same wireless communication frequency band.

[0052] Among them, the closed slot structure 322 has a slot pitch s1, and the slot pitch s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band. The area of the central region 323 is smaller than the area of the second conductor layer 32 and is between 0.01 times and 0.43 times the area of the second conductor layer 32. The area of the second conductor layer 32 is smaller than the area of the first conductor layer 31, and the area of the second conductor layer 32 is between the square of 0.13 wavelength and the square of 0.79 wavelength of the lowest operating frequency of the wireless communication band. The area of the central region 323 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band. The number of the plurality of feeding conductor lines 331, 332 is 2. The number of the plurality of feeding conductor lines 331, 332 is greater than 1 and less than or equal to 5. Each of the plurality of feeding conductor lines 331, 332 has one end electrically connected to the second conductor layer 32. The plurality of feeding conductor lines 331, 332 are parallel to the second conductor layer 32. The plurality of feeding conductor lines 331, 332 can also be arranged between the first conductor layer 31 and the second conductor layer 32, parallel to the second conductor layer 32 and having a coupling pitch between them. The first pitch d1 is between 0.0023 wavelength and 0.29 wavelength of the lowest operating frequency of the wireless communication band. The signal sources 341, 342 are transmission lines, impedance matching circuits, amplifier circuits, feeding networks, switch circuits, connector components, filter circuits, integrated circuit chips or radio frequency front-end modules. When the integrated multi-feed antenna 3 is actually applied, it can be made and assembled by but not limited to printed circuit board manufacturing processes, conductor cutting manufacturing processes, plastic injection molding manufacturing processes and plastic metallization manufacturing processes. The integrated multi-feed antenna 3 can be configured in multiple groups to form an integrated multi-feed antenna array, applied to a multiple-input multiple-output antenna system, a pattern switching antenna system or a beamforming antenna system or electrically connected through a transmission line or a radio frequency feeding network to improve the radiation gain.

[0053] Figure 3In an embodiment of the present invention, the integrated multi-feed antenna 3 is designed such that the plurality of feed conductor lines 331 and 332 are each electrically connected to the second conductor layer 32 and are parallel to the second conductor layer 32. The central region 323 is designed to have a central slot structure 3231. The closed slot structure 322 is designed to have two electrical shorting structures 3221 and 3222, and the shape of the second conductor layer 32 is square, which is not exactly the same as that of the integrated multi-feed antenna 1 in the embodiment. However, the integrated multi-feed antenna 3 also forms a central region 323 by designing the second conductor layer 32 to have a closed slot structure 322 and surrounding the first central position 321 with the closed slot structure 322. The closed slot structure 322 is designed to have a slot pitch s1, and the slot pitch s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band, which can effectively suppress the energy coupling degree of the resonance currents excited by the plurality of feed conductor lines 331 and 332 on the second conductor layer 32, successfully achieving a good isolation degree between the plurality of resonance modes and achieving the technical effect of co-constructing and integrating multiple signal sources 341 and 342. The area of the central region 323 is designed to be between 0.01 times and 0.43 times the area of the second conductor layer 32. And the area of the central region 323 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band. This can optimize the input impedance between the plurality of feed conductor lines 331 and 332 and the second conductor layer 32, successfully achieving a good impedance matching degree between the plurality of resonance modes. Therefore, the integrated multi-feed antenna 3 in an embodiment of the present invention can also achieve the same technical effect of multi-antenna compatible integration as the integrated multi-feed antenna 1 in the embodiment. The integrated multi-feed antenna 3 can also be configured in multiple groups to form an integrated multi-feed antenna array, which is applied to a multiple-input multiple-output antenna system, a pattern-switching antenna system, a beamforming antenna system, or is electrically connected through a transmission line or a radio frequency feed network to improve the radiation gain.

[0054] Figure 4 This is a structural diagram of an integrated multi-feed antenna 4 according to an embodiment of the present invention. As Figure 4As shown, the integrated multi-feed antenna 4 includes a first conductor layer 41, a second conductor layer 42, and a plurality of feed conductor lines 431, 432, 433. The second conductor layer 42 has a first central position 421. The second conductor layer 42 further has a closed slot structure 422. The closed slot structure 422 surrounds the first central position 421 to enclose a central region 423. The central region 423 is electrically connected to the first conductor layer 41 through a ground conductor line 4232. There is a first spacing d1 between the second conductor layer 42 and the first conductor layer 41. The second conductor layer 42 is generally circular. Each of the plurality of feed conductor lines 431, 432, 433 has one end electrically connected to the second conductor layer 42 and the other end electrically connected to a signal source 441, 442, 443. Each of the plurality of feed conductor lines 431, 432, 433 excites the second conductor layer 42 to generate at least one resonance mode of each, and the plurality of resonance modes cover at least one same wireless communication frequency band. The integrated multi-feed antenna 4 of the embodiment further has a third conductor layer 46. The second conductor layer 42 is located between the first conductor layer 41 and the third conductor layer 46. There is a second spacing d2 between the third conductor layer 46 and the second conductor layer 42. The third conductor layer 46 is generally square. The second spacing d2 is between 0.011 wavelength and 0.23 wavelength of the lowest operating frequency of the wireless communication frequency band. The area of the third conductor layer 46 is smaller than the area of the first conductor layer 41, and the area of the third conductor layer 46 is between the square of 0.13 wavelength and the square of 0.83 wavelength of the lowest operating frequency of the wireless communication frequency band. The third conductor layer 46 has a second central position 461, and the second central position 461 is aligned with the first central position 421 of the second conductor layer 42.

[0055] Among them, the closed slot structure 422 has a slot pitch s1, and the slot pitch s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band. The area of the central region 423 is smaller than the area of the second conductor layer 42 and is between 0.01 times and 0.43 times the area of the second conductor layer 42. The area of the second conductor layer 42 is smaller than the area of the first conductor layer 41, and the area of the second conductor layer 42 is between the square of 0.13 wavelength and the square of 0.79 wavelength of the lowest operating frequency of the wireless communication band. The area of the central region 423 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band. The number of the plurality of feeding conductor lines 431, 432, 433 is 3. The number of the plurality of feeding conductor lines 431, 432, 433 is greater than 1 and less than or equal to 5. The plurality of feeding conductor lines 431, 432, 433 are located between the first conductor layer 41 and the second conductor layer 42. Each of the plurality of feeding conductor lines 431, 432, 433 has one end electrically connected to the second conductor layer 42. The first spacing d1 is between 0.0023 wavelength and 0.29 wavelength of the lowest operating frequency of the wireless communication band. The signal sources 441, 442, 443 are transmission lines, impedance matching circuits, amplifier circuits, feeding networks, switch circuits, connector elements, filter circuits, integrated circuit chips or radio frequency front-end modules. When the integrated multi-feed antenna 4 is actually applied, it can be made and assembled by but not limited to printed circuit board manufacturing processes, conductor part cutting manufacturing processes, plastic injection molding manufacturing processes and plastic metallization manufacturing processes. The integrated multi-feed antenna 4 can be configured in multiple groups to form an integrated multi-feed antenna array, which is applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system or a beamforming antenna system or is electrically connected through a transmission line or a radio frequency feeding network to improve the radiation gain.

[0056] Figure 4In an embodiment of the present invention, the integrated multi-feed antenna 4, although it is designed such that the multiple feed conductor lines 431, 432, 433 are each electrically connected to the second conductor layer 42, and the central region 423 is designed to be electrically connected to the first conductor layer 41 through a ground conductor line 4232. And it is designed to have a third conductor layer 46, with the second conductor layer 42 located between the first conductor layer 41 and the third conductor layer 46, which is not exactly the same as the integrated multi-feed antenna 1 of the embodiment. However, the integrated multi-feed antenna 4 also has a closed slot structure 422 designed on the second conductor layer 42, and the closed slot structure 422 surrounds the first central position 421 to enclose a central region 423. And the closed slot structure 422 has a slot pitch s1, where the slot pitch s1 is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication band, which can effectively suppress the energy coupling degree of the resonance currents excited by the multiple feed conductor lines 431, 432, 433 on the second conductor layer 42, successfully achieving a good isolation degree between the multiple resonance modes and achieving the technical effect of the co-construction integration of multiple signal sources 441, 442, 443. And the area of the central region 423 is between 0.01 times and 0.43 times the area of the second conductor layer 42. And the area of the central region 423 is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication band. This can optimize the input impedance between the multiple feed conductor lines 431, 432, 433 and the second conductor layer 42, successfully achieving a good impedance matching degree between the multiple resonance modes. Therefore, the integrated multi-feed antenna 4 of an embodiment of the present invention can also achieve the same technical effect of multi-antenna compatible integration as the integrated multi-feed antenna 1 of the embodiment. The integrated multi-feed antenna 4 can also be configured in multiple groups to form an integrated multi-feed antenna array, which can be applied to a multiple-input multiple-output antenna system, a field pattern switching antenna system, a beamforming antenna system, or to improve the radiation gain by electrically connecting through a transmission line or a radio frequency feed network.

[0057] Figure 5 In an embodiment of the present invention, three sets of the integrated multi-feed antennas 4 (as Figure 4The structure diagram of an integrated multi-feed antenna array 5 is formed as shown. The signal source is a transmission line, an impedance matching circuit, an amplifier circuit, a feed network, a switching circuit, a connector component, a filter circuit, an integrated circuit chip or a radio frequency front-end module. When the integrated multi-feed antenna array 5 is actually applied, it can be fabricated and assembled by, but not limited to, printed circuit board manufacturing processes, conductor cutting manufacturing processes, plastic injection molding manufacturing processes, and plastic metallization manufacturing processes. The integrated multi-feed antenna array 5 is applied to a multiple-input multiple-output antenna system, a pattern switching antenna system, or a beamforming antenna system, or is electrically connected through a transmission line or a radio frequency feed network to improve the radiation gain. Figure 5 This is only one of the embodiments of the integrated multi-feed antenna configuration of the present invention that forms an integrated multi-feed antenna array by combining multiple groups. It is not used to limit the number of arrangements, permutations, shapes, and arrangements of the integrated multi-feed antenna arrays that can be formed by the integrated multi-feed antenna of the present invention in actual application scenarios.

[0058] In summary, although the present invention is disclosed in combination with the above embodiments, it is not intended to limit the present case. Those of ordinary skill in the art to which the present case pertains can make various modifications and refinements without departing from the spirit and scope of the present case. Therefore, the protection scope of the present case should be defined by the appended claims.

Claims

1. An integrated multi-feed antenna, characterized in that, Comprising: A first conductor layer; And A second conductor layer having a first central position, the second conductor layer having a closed slot structure that surrounds the first central position to enclose a central region, and having a first spacing between the second conductor layer and the first conductor layer; A plurality of feed conductor lines, each having one end electrically connected or electrically coupled to the second conductor layer and each having the other end electrically connected to a signal source, the plurality of feed conductor lines each exciting the second conductor layer to generate at least one resonance mode each, the plurality of resonance modes covering at least one same wireless communication frequency band.

2. The integrated multi-feed antenna according to claim 1, wherein The closed slot structure has a slot pitch that is between 0.001 wavelength and 0.08 wavelength of the lowest operating frequency of the wireless communication frequency band.

3. The integrated multi-feed antenna according to claim 1, wherein The area of the central region is less than the area of the second conductor layer and is between 0.01 times and 0.43 times the area of the second conductor layer.

4. The integrated multi-feed antenna according to claim 1, wherein The area of the second conductor layer is less than the area of the first conductor layer, and the area of the second conductor layer is between the square of 0.13 wavelength and the square of 0.79 wavelength of the lowest operating frequency of the wireless communication frequency band.

5. The integrated multi-feed antenna according to claim 1, wherein The area of the central region is between the square of 0.018 wavelength and the square of 0.35 wavelength of the lowest operating frequency of the wireless communication frequency band.

6. The integrated multi-feed antenna according to claim 1, wherein The number of the plurality of feed conductor lines is greater than 1 and less than or equal to 5.

7. The integrated multi-feed antenna according to claim 1, wherein The plurality of feed conductor lines are located between the first conductor layer and the second conductor layer or parallel to the second conductor layer.

8. The integrated multi-feed antenna according to claim 1, wherein Each of the plurality of feed conductor lines has one end electrically coupled to the second conductor layer, and each of the plurality of feed conductor lines has a coupling pitch between it and the second conductor layer.

9. The integrated multi-feed antenna according to claim 8, wherein The coupling pitch is between 0.005 wavelength and 0.19 wavelength of the lowest operating frequency of the wireless communication frequency band.

10. The integrated multi-feed antenna according to claim 1, wherein The first spacing is between 0.0023 wavelength and 0.29 wavelength of the lowest operating frequency of the wireless communication frequency band.

11. The integrated multi-feed antenna according to claim 1, wherein, Having a third conductor layer, the second conductor layer is located between the first conductor layer and the third conductor layer, and there is a second spacing between the third conductor layer and the second conductor layer.

12. The integrated multi-feed antenna according to claim 11, wherein The second spacing is between 0.011 wavelength and 0.23 wavelength of the lowest operating frequency of the wireless communication frequency band.

13. The integrated multi-feed antenna according to claim 11, wherein The area of the third conductor layer is less than the area of the first conductor layer, and the area of the third conductor layer is between the square of 0.13 wavelength and the square of 0.83 wavelength of the lowest operating frequency of the wireless communication frequency band.

14. The integrated multi-feed antenna according to claim 11, wherein, The third conductor layer has a second central position that aligns with the first central position of the second conductor layer.

15. The integrated multi-feed antenna according to claim 1, characterized in that, The central region is electrically connected to the first conductor layer through a ground conductor line.

16. The integrated multi-feed antenna according to claim 1, wherein The central region has a central slot structure.

17. The integrated multi-feed antenna according to claim 1, wherein The closed slot structure has at least one electrical short circuit structure.

18. The integrated multi-feed antenna according to claim 1, wherein, The signal source is a transmission line, an impedance matching circuit, an amplifier circuit, a feed network, a switch circuit, a connector element, a filter circuit, an integrated circuit chip or a radio frequency front-end module.

19. The integrated multi-feed antenna according to claim 1, characterized in that The integrated multi-feed antenna can be configured in multiple groups to form an integrated multi-feed antenna array, which is applied to a multiple-input multiple-output antenna system, a pattern-switching antenna system, a beamforming antenna system, or electrically connected through a transmission line or a radio frequency feeding network to improve the radiation gain.

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