五、新型說明： 【新型所屬之技術領域】 [0001] 本新型涉及天線，尤其涉及一種多天線系統。 【先前技術】 [0002] 天線作為無線通訊產品的重要元件之一，其性能與尺寸 的大小直接關係到無線通訊產品的優劣。隨著通訊產品 對訊號強度的要求越來越高，多天線系統已經成為市場 應用的主流。而多天線之間在通訊產品中所形成干擾， 則成為了設計上需要解決的問題。 [0003] 常見的設計方法之一是將多天線設計於通訊產品的兩端 ，通過空間距離增加隔離度以減小干擾，但是適宜的空 間距離會使多天線系統的尺寸變大。常見教計方法之二 是將多天線設計成不同的極化方向，通過改變天線的輻 射方向以減小干擾，但是會增加天線設計與組合的難度 〇 [0004] 而如何設計出一種尺寸較小，又具有良好性能的多天線 系統成為急需解決的問題。 【新型内容】 [0005] 有鑒於此，需要提供一種多天線系統，具有較小的尺寸 ，又具有良好的性能。 [0006] 本新型實施方式中提供的多天線系統，包括設置有淨空 區與金屬層的基板以及設置於淨空區的第一天線、第二 天線及隔離單元。隔離單元位於第一天線與第二天線之 間，隔離單元包括第一隔離部與第二隔離部，皆呈“T” 表單編號A0101 第3頁/共12頁 M382604 形，並連接於金屬層。 [〇〇〇7] 藉由以下對具體實施方式詳細的描述結合附圖，將可輕 易的瞭解上述内容及此項新型之諸多優點。 【實施方式】 [0008]參閱圖1，為本新型實施方式中多天線系統100的示意圖 。在本實施方式中’多天線系統丨00包括基板1〇、第一天 線21、第二天線22與隔離單元30 » [〇〇〇9]基板10設置有淨空區11與金屬層12。 [0010]第一天線21與第二天線22設置於淨空區11的兩側，用於 增加空間隔離度。在本實施_方式.中，筹>一天線21包括第 一饋入部211，用於饋入訊晕益第厂：.天線21。第二天線22 包括第二饋入部221，用於饋入訊號至第二天線22。第一 天線21與第二天線22工作於同一頻段内，分別用於接收 與發送電磁波訊號。在本實施方式中，由於在第一天線 f ... '!'：" - 21與第二天線22之間設置了‘隔離單元3〇，因此第一天線 21與第二天線22的形狀、尺锋化方向可以相同，也 可以不同，根據多天線系統100的需求，可自由設計。由 於當形狀、尺寸與極化方向皆相同時，天線21、22之間 的電磁波訊號干擾最大，因此，本實施方式中以此為例 但不局限於此。在其他實施方式中，在天線21、22的 形狀、尺寸與極化方向部分相同或完全不同的情況下， 隔離單元3〇的設計也同樣適用。 _]⑮離單元30包括第一隔離部31與第二隔離部32。第一隔 離部31與第二隔離部32皆呈“τ”形，且直線對稱。 表單編號Α0101 第4頁/共12頁 M382604 [0012] 第一隔離部31包括第一垂直段311與第一水平段312。第 一垂直段311垂直連接於金屬層丨2與第一水平段312的中 部之間。第二隔離部32包括第二垂直段321與第二水平段 322。第二垂直段321垂直連接於金屬層12與第二水平段 322的中部之間。第二水平段322與第一水平段312在同 一直線方向上。 [0013] 在本實施方式中，隔離單元30採用微帶金屬線，與金屬 層12共同形成扼流圈，用於降低第一天線21與第二天線 22之間的耦合度，避免第一天線21與第二天線22之間的 電磁訊號干擾。 [0014] 在本實施方式中’隔離單元_的長度輿寬度的設計可根 據第一天線21與第二天線22的改變作適當調-整，以調節 至隔離度最佳。在本實施方式中，天線21、22的改變包 括形狀、大小與極化方向等。 [0015] 在本實施方式中，第一隔離部31與第二隔離部32之間形 成第一間隙41，第一隔離部31與第一天線21之間形成第 二間隙42，第二隔離單元32與第二天線22之間形成第三 間隙43 »所述間隙41、42、43可用於增強隔離單元30的 隔離的效果，減小天線21、22之間的電磁訊號干擾。 [0016] 請參閱圖2 ’所示為本新型實施方式中多天線系統1〇〇的 尺寸圖。淨空區11的長度為130毫米（mra)，寬度為 15mm。第一天線21與第二天線22的長度為40mm，寬度為 1mm。第一水平段312與第二水平段322的長度為28mm， 寬度為6mm，第一垂直段311與第二垂直段321的長度為 表單編號A0101 第5頁/共12頁 M382604 4nm，寬度為4mm。第一間隙41的長度為4mm，第二間隙 42與第三間隙43的長度皆為27mm。 [0017] 請參閱圖3，所示為本新型實施方式中多天線系統100的 隔離度測試對比圖。圖3 (a)為本實施方式中設置了隔 離單元30的多天線系統100，圖3 (b)為未設置隔離單元 30的多天線系統，從對比中可以看出，在頻率2. 4GHz附 近的工作頻段，設置了隔離單元30，多天線系統100的回 波損耗由-lldB左右減少到-20dB左右，輻射性能改善明 顯。 [0018] 綜上所述，本新型符合新型專利要件，爰依法提出專利 申請。惟，以上所述者僅為本新型之.較佳實施方式，舉 凡熟悉本案技藝之人士，在爰本案新型精:神所做之等效 修飾或變化，皆應包含於以下之申請專利範圍内。 【圖式簡單說明】 [0019] 圖1是本新型實施方式中多天線系統的示意:圖。 [0020] 圖2是本新型實施方式中多天線系統的尺寸圖。 [0021] 圖3是本新型實施方式中多天線系統的隔離度測試對比圖 【主要元件符號說明】 [0022] 多天線系統 100 [0023] 基板 10 [0024] 淨空區 11 [0025] 金屬層 12 表單編號A0101 第6頁/共12頁 M382604V. New description: [New technology field] [0001] The present invention relates to an antenna, and more particularly to a multi-antenna system. [Prior Art] [0002] Antenna is one of the important components of wireless communication products. Its performance and size are directly related to the advantages and disadvantages of wireless communication products. With the increasing demand for signal strength in communication products, multi-antenna systems have become the mainstream of market applications. The interference formed by multiple antennas in communication products has become a problem that needs to be solved in design. [0003] One of the common design methods is to design multiple antennas at both ends of a communication product, increasing the isolation by spatial distance to reduce interference, but a suitable spatial distance will increase the size of the multi-antenna system. The second common method is to design multiple antennas into different polarization directions, to reduce the interference by changing the radiation direction of the antenna, but it will increase the difficulty of antenna design and combination [0004] and how to design a smaller size. A multi-antenna system with good performance has become an urgent problem to be solved. [New Content] [0005] In view of this, it is required to provide a multi-antenna system having a small size and good performance. The multi-antenna system provided in the new embodiment includes a substrate provided with a clearance area and a metal layer, and a first antenna, a second antenna, and an isolation unit disposed in the clearance area. The isolation unit is located between the first antenna and the second antenna, and the isolation unit includes a first isolation portion and a second isolation portion, each having a "T" form number A0101, a third page, a total of 12 pages, M382604 shape, and connected to the metal Floor. [7] The above and other advantages of the novel will be readily understood by the following detailed description of the embodiments and the accompanying drawings. [Embodiment] [0008] Referring to Figure 1, there is shown a schematic diagram of a multi-antenna system 100 in accordance with an embodiment of the present invention. In the present embodiment, the multi-antenna system 丨00 includes a substrate 1A, a first antenna 21, a second antenna 22, and an isolation unit 30. [〇〇〇9] The substrate 10 is provided with a clearance area 11 and a metal layer 12. The first antenna 21 and the second antenna 22 are disposed on both sides of the clearance area 11 for increasing spatial isolation. In the present embodiment, the antenna 21 includes a first feeding portion 211 for feeding into the signal antenna: antenna 21. The second antenna 22 includes a second feeding portion 221 for feeding a signal to the second antenna 22. The first antenna 21 and the second antenna 22 operate in the same frequency band for receiving and transmitting electromagnetic wave signals, respectively. In the present embodiment, since the 'isolation unit 3' is disposed between the first antenna f ... '!': " - 21 and the second antenna 22, the first antenna 21 and the next day The shape and the direction of the line 22 of the line 22 may be the same or different, and may be freely designed according to the requirements of the multi-antenna system 100. Since the electromagnetic wave signal interference between the antennas 21 and 22 is the largest when the shape, the size, and the polarization direction are the same, the present embodiment is exemplified, but not limited thereto. In other embodiments, the design of the isolation unit 3A is equally applicable in the case where the shape, size, and polarization direction of the antennas 21, 22 are identical or completely different. The detachment unit 30 includes a first partition 31 and a second partition 32. Both the first partition portion 31 and the second partition portion 32 have a "τ" shape and are linearly symmetrical. Form No. Α0101 Page 4 of 12 M382604 [0012] The first partition 31 includes a first vertical section 311 and a first horizontal section 312. The first vertical section 311 is vertically connected between the metal layer 2 and the middle of the first horizontal section 312. The second partition 32 includes a second vertical section 321 and a second horizontal section 322. The second vertical section 321 is vertically connected between the metal layer 12 and the middle of the second horizontal section 322. The second horizontal segment 322 is in the same linear direction as the first horizontal segment 312. [0013] In the present embodiment, the isolation unit 30 uses a microstrip metal line to form a choke together with the metal layer 12 for reducing the coupling between the first antenna 21 and the second antenna 22, and avoiding the Electromagnetic signal interference between an antenna 21 and the second antenna 22. [0014] In the present embodiment, the design of the length 舆 width of the 'isolation unit _ can be appropriately adjusted according to the change of the first antenna 21 and the second antenna 22 to adjust to the best isolation. In the present embodiment, the changes of the antennas 21, 22 include shape, size, polarization direction, and the like. [0015] In the present embodiment, a first gap 41 is formed between the first isolation portion 31 and the second isolation portion 32, and a second gap 42 is formed between the first isolation portion 31 and the first antenna 21, and the second isolation is performed. A third gap 43 is formed between the unit 32 and the second antenna 22. The gaps 41, 42, 43 can be used to enhance the isolation of the isolation unit 30, reducing electromagnetic signal interference between the antennas 21, 22. [0016] Please refer to FIG. 2' for a dimension view of the multi-antenna system 1A in the new embodiment. The clearance area 11 has a length of 130 mm (mra) and a width of 15 mm. The first antenna 21 and the second antenna 22 have a length of 40 mm and a width of 1 mm. The first horizontal segment 312 and the second horizontal segment 322 have a length of 28 mm and a width of 6 mm. The lengths of the first vertical segment 311 and the second vertical segment 321 are the form number A0101, page 5 / total 12 pages, M382604 4 nm, and the width is 4 mm. . The length of the first gap 41 is 4 mm, and the lengths of the second gap 42 and the third gap 43 are both 27 mm. Referring to FIG. 3, a comparison test of the isolation test of the multi-antenna system 100 in the present embodiment is shown. Figure 3 (a) is a multi-antenna system 100 in which the isolation unit 30 is provided in the present embodiment, and Figure 3 (b) is a multi-antenna system in which the isolation unit 30 is not provided, as seen from the comparison, at a frequency of about 2. 4 GHz. The working frequency band is provided with the isolation unit 30, and the return loss of the multi-antenna system 100 is reduced from about -11 dB to about -20 dB, and the radiation performance is improved significantly. [0018] In summary, the present invention conforms to the new patent requirements and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention. For those who are familiar with the art of the present invention, the novel modifications or changes made by God in this case should be included in the following patent application. . BRIEF DESCRIPTION OF THE DRAWINGS [0019] FIG. 1 is a schematic diagram of a multi-antenna system in the present embodiment. 2 is a dimensional view of a multi-antenna system in the present embodiment. 3 is a comparison diagram of isolation test of a multi-antenna system in the present embodiment [Description of main component symbols] [0022] Multi-antenna system 100 [0023] Substrate 10 [0024] Clearance area 11 [0025] Metal layer 12 Form No. A0101 Page 6 of 12 M382604
[0026] 第 一天線 21 [0027] 第 一饋入部 211 [0028] 第二天線 22 [0029] 第二饋入部 221 [0030] 隔離單元 30 [0031] 第 一隔離部 31 [0032] 第 一垂直段 311 [0033] 第 一水平段 312 [0034] 第二隔離部 32 [0035] 第二垂直段 321 [0036] 第二水平段 322 [0037] 第 一間隙 41 [0038] 第 二間隙 42 [0039] 第三間隙 43 表單编號A0101 第7頁/共12頁First antenna 21 [0027] First antenna 22 [0028] Second feed portion 221 [0030] Isolation unit 30 [0031] First isolation portion 31 [0032] a vertical section 311 [0033] a first horizontal section 312 [0034] a second vertical section 321 [0036] a second horizontal section 322 [0037] a first gap 41 [0038] a second gap 42 [0039] Third gap 43 Form number A0101 Page 7 of 12