M418410 •五、新型說明： 【新型所屬之技術領域】 本創作關於種多輸入多輸出(multi-input and multi-output,ΜΙΜΟ) 天線結構，應用於無線訊號的傳輸中。 【先前技術】M418410 • V. New description: [New technical field] This creation is about multi-input and multi-output (ΜΙΜΟ) antenna structure, used in the transmission of wireless signals. [Prior Art]
由於無線網路的快速發展，對於傳輸速度上的需求也愈來愈高， 由802.11b、a、g發展到現在的802·11η。在802.11η的工作頻段_， 除了增加新的通訊協定之外，且整合多天線應用於多輸入多輸出 (multMnput and multi-output, ΜΙΜΟ)技術，為提升頻率資源效率、系統 容量和通訊品質的有效途徑。 多輸入多輸出（ΜΙΜΟ)技術能夠在空間中産生獨立的並 行通道同時傳輸多路徑資料流程，這樣就有效地提高了系統 的傳輸速率，即在不增加系統頻寬的情況下增加頻譜效率。 使用多輸人多輸出（ΜΙΜΟ)天線线是為了解決天線多重路徑衰減 的問題’㈣於目前市面上無線產品為了輕巧易於攜帶，體積也趨向 愈來愈小’ i«餅天線與錄祕接近，造叙線之_隔離度 (Isolation)降低，使得基頻信號處理困難、傳輸速度變低也會造成天 線之間的破雜的干涉餅增益降低。因此，如何崎兩天線饋入點 的電流路徑而提高隔離度，是為本創作主要討論之内容。 3 【新型内容】 針對先前技術之魄it，本解提供了—❹輸人錯出天線結 構，係包括： 0 一基板，具有一上表面及一下表面； -接地面，鄰近於該基板-側’並具有—延伸部伸人該基板下表 面； -第-天線，設置於該基板上，具有設置於該基板下表面的一L 型第-主賴射體，以及環繞該第-主輕射體之—第—福合輻射體；該 L型第-主輻射體端部形成—第—饋人點，而該第—耗合輻射體之一 末端連接於該接地面之延伸部；及 -第二天線’設置於該基板上’具有設置於該基板下表面的一l 型第二主輻射體，以及職該第二主輕射體之—第二柄合輻射體；該 L型第二主輻射體端部形成一第二饋入點，而該第二耦合輻射體之一 末連接於該接地面之延伸部； 其特徵在於：該接地面之延伸部上開設有至少一切槽，利用該切 槽之深度及寬度而調整該第-及第二天線隔離度的頻料點偏移，以 提供一良好的多輸入多輸出天線結構。 以下，將依據圖面所示之實施例而詳加說明本創作之結構特點及 使用功效。 【實施方式】 請參見第一圓及第二圊，本創作提供了一種多輸入多輪出天線結 構，其係由一基板10、一接地面2 〇、一第一天線3 〇及一第二天 線40所構成。 本創作的一基板1 0可為一電路板，例如FR4材質，具有一上表 面1 1及一下表面12。而接地面2 0鄰近於基板1〇—側，並具有 一延伸部21伸入基板10下表面12。 本創作的第一天線3 0與第一天線4 0在基板1〇上相對鏡射設 置。 第一天線3 0設置於基板10上，具有設置於基板1〇下表面丄 2的一L型第一主輻射體31，以及環繞該第一主輻射體3 ;[之一第 一耦合輻射體3 2 ;該L型第一主輻射體31端部形成一第一饋入點 31 1，而該第一耦合輻射體3 2之一末端3 21連接於接地面2 〇 之延伸部21。 同理，第二天線4 0也設置於基板1〇上，具有設置於基板工〇 下表面12的一L型第二主輻射體41，以及環繞該第二主輻射體4 1之一第二耗合輻射體42;該L型第二主賴射體41端部形成一第 二饋入點41 1，而該第二耦合輻射體4 2之一末端4 21連接於接 地面2 0之延伸部21。 本創作主要係在接地面2 0之延伸部21上開設有至少一切槽2 2 ’利用該切槽2 2之深度及寬度而調整第一天線3 0及第二天線4 ◦隔離度’藉此使兩天線之間在工作頻率2.3GHz〜2.7GHz的隔離度皆 達到最低標準-8dB以下。 另外，本創作在第一天線3 0的第一耦合輻射體3 2之另一末端 3 2 2係穿越基板1〇而延伸至上表面11。同樣地，第二天線4 〇 的第二耦合輻射體4 2之另一末端4 2 2係穿越基板χ 0而延伸至上 表面1 1。 請參見第三圖，係為本創作之模擬測試結果，由於第一天線3 〇 與第二天線4 0相互鏡射設置，故上方實線代表了兩天線性能，參數 S11與S22為重疊，而下方虛線代表了兩天線互相干擾性能，參數S12 與S21為重疊。藉由切槽2 2的開設，可得到第一天線3 〇及第二天 線4 0較佳隔離度的頻率落點約在頻率2·45 GHz。利用不同深度及寬 度設計的2 ’而可改變社狀間卫作解23GHz〜27GRz的 隔離度。 參見第四圖，係為本創作之實物測試結構，其中基板丄〇係為15 mm X Π mm，其中TRi為參數SU，TR2為參數S22，為參數 S12 ’ TR4絲數S2卜由圖中TR3及TR4所示，兩天線之間在頻率 2.3GHz〜2.7GHz處，隔離度皆小於-刪，故為一良好的多輸入多輸出 天線結構。 在下表—及表二巾，_ 了本_麵試鮮細為2.3GHz〜2.7 GHz下的第-天線3 0及第二天線4〇的各種性能測試結果，顯示了 本創作在工作鮮23GHz〜2.7GHz時可得批㈣鑛雖（祕如 Efficiency) 0 M418410Due to the rapid development of wireless networks, the demand for transmission speed has become higher and higher, from 802.11b, a, g to the current 802.11n. In the working band of 802.11η, in addition to adding new communication protocols, and integrating multiple antennas for multi-input and multi-output (ΜΙΜΟ) technologies, in order to improve frequency resource efficiency, system capacity and communication quality Effective Ways. Multiple Input Multiple Output (ΜΙΜΟ) technology can generate independent parallel channels in space to simultaneously transmit multipath data flow, which effectively increases the system's transmission rate, ie increases spectral efficiency without increasing system bandwidth. The use of multi-input multi-output (ΜΙΜΟ) antenna lines is to solve the problem of antenna multipath attenuation. (4) In the current market, wireless products are lighter and easier to carry, and the volume tends to be smaller and smaller. The reduction of the isolation level (Isolation) makes it difficult to process the fundamental frequency signal and the transmission speed becomes lower, which also causes the interference of the interfering interference between the antennas to be reduced. Therefore, how to improve the isolation of the current path of the two antenna feed points is the main discussion of this creation. 3 [New content] For the prior art, this solution provides the structure of the missing antenna, including: 0 a substrate having an upper surface and a lower surface; - a ground plane adjacent to the substrate - side And having an extension extending from the lower surface of the substrate; a first antenna disposed on the substrate, having an L-type first-main rading disposed on a lower surface of the substrate, and surrounding the first-primary light a body-first-fusible radiator; the L-shaped first-main radiator end forms a first-feeder point, and one end of the first-contracting radiator is connected to an extension of the ground plane; and The second antenna 'disposed on the substrate' has a type 1 second main radiator disposed on the lower surface of the substrate, and a second handle radiator of the second main light project; the L type The end of the two main radiators forms a second feeding point, and one of the second coupling radiators is connected to the extension of the grounding surface; and the extending portion of the grounding surface is provided with at least all slots. Adjusting the frequency of the first and second antenna isolation by using the depth and width of the slot The material is offset to provide a good multi-input multi-output antenna structure. Hereinafter, the structural features and functions of the present invention will be described in detail based on the embodiments shown in the drawings. [Embodiment] Please refer to the first circle and the second frame. The present invention provides a multi-input and multi-round antenna structure, which is composed of a substrate 10, a ground plane 2, a first antenna 3, and a first The two antennas 40 are constructed. A substrate 10 of the present invention may be a circuit board, such as FR4 material, having an upper surface 11 and a lower surface 12. The ground plane 20 is adjacent to the side of the substrate 1 and has an extension 21 extending into the lower surface 12 of the substrate 10. The first antenna 30 of the present creation and the first antenna 40 are oppositely mirrored on the substrate 1A. The first antenna 30 is disposed on the substrate 10, has an L-type first main radiator 31 disposed on the lower surface 丄2 of the substrate 1, and surrounds the first main radiator 3; [one first coupling radiation The end of the L-shaped first main radiator 31 forms a first feed point 31 1 and one end 3 21 of the first coupling radiator 3 2 is connected to the extension 21 of the ground plane 2 . Similarly, the second antenna 40 is also disposed on the substrate 1 , having an L-type second main radiator 41 disposed on the lower surface 12 of the substrate, and surrounding the second main radiator 41 a second absorbing radiator 42; a second feeding point 41 1 is formed at an end of the L-shaped second main rading body 41; and an end 4 21 of the second coupling radiant body 42 is connected to the grounding surface 20 The extension portion 21. The present invention mainly includes at least all the slots 2 2 on the extension portion 21 of the ground plane 20, and the first antenna 30 and the second antenna 4 are separated by the depth and width of the slot 2 2 ' Thereby, the isolation between the two antennas at the operating frequency of 2.3 GHz to 2.7 GHz is below the minimum standard of -8 dB. In addition, the other end of the first coupling radiator 3 2 of the first antenna 30 extends through the substrate 1 to the upper surface 11. Similarly, the other end 4 2 2 of the second coupling radiator 4 2 of the second antenna 4 系 extends through the substrate χ 0 to the upper surface 11 . Please refer to the third figure, which is the simulation test result of this creation. Since the first antenna 3 〇 and the second antenna 40 are mutually mirrored, the upper solid line represents the performance of the two antennas, and the parameters S11 and S22 overlap. The lower dotted line represents the mutual interference performance of the two antennas, and the parameters S12 and S21 overlap. By the opening of the slot 2 2, the frequency of the preferred isolation of the first antenna 3 〇 and the second antenna 40 is about 2·45 GHz. The 2 ′ of different depths and widths can be used to change the isolation of the community to solve the 23GHz~27GRz isolation. See the fourth figure, which is the physical test structure of the creation, in which the substrate tanning system is 15 mm X Π mm, where TRi is the parameter SU, TR2 is the parameter S22, and the parameter S12 'TR4 wire number S2 is shown by the TR3 in the figure. As shown in TR4, the isolation between the two antennas at a frequency of 2.3 GHz to 2.7 GHz is less than -, so it is a good multi-input multi-output antenna structure. In the following table - and table 2 towel, _ this _ interview freshly for the performance of the first - antenna 3 0 and the second antenna 4 2.3 under 2.3GHz ~ 2.7 GHz, shows the creation of the work in the fresh 23GHz ~ At 2.7GHz, you can get the batch (4) mine, although it is secret (Efficiency) 0 M418410
表一： MIMO_l_TEST-i 頻率(MHz) 2300 2350 2400 2450 2500 2550 2600 2650 2700 天線讎出 功率(dBm) 0 0 0 0 0 0 0 0 0 總幅射功率 (dBm) -2.794 -2.804 -1.7 -1.051 -1.972 -1.56 -2.281 -3.472 -3.005 峰値EIRP (dBm) 1.77 1.834 4.363 4.408 3.846 4.659 3.938 2.606 2.804 方向性(dBi) 4.565 4.637 6.063 5.459 5.818 6.22 6.219 6.078 5.809 效率(dB> -2.794 -2.804 -1.7 -1.051 -1.972 -1.56 -2.281 -3.472 -3.005 效率(％) 0.526 0.524 0.676 0.785 0.635 0.698 0.591 0.45 0.501 增益（dBi) 1.77 1.834 4.363 4.408 3.846 4.659 3.938 2.606 2.804 平均增益 _ -2.794 -2.804 •1.7 -1.051 -1.972 -1.56 -2.281 -3.472 -3.005 移動效率 (%) 52.55% 52.43% 67.61% 78.51% 63.50% 69.82% 59.14% 44.96% 50.06%Table 1: MIMO_l_TEST-i Frequency (MHz) 2300 2350 2400 2450 2500 2550 2600 2650 2700 Antenna Output Power (dBm) 0 0 0 0 0 0 0 0 0 Total Radiated Power (dBm) -2.794 -2.804 -1.7 -1.051 -1.972 -1.56 -2.281 -3.472 -3.005 Peak 値 EIRP (dBm) 1.77 1.834 4.363 4.408 3.846 4.659 3.938 2.606 2.804 Directionality (dBi) 4.565 4.637 6.063 5.459 5.818 6.22 6.219 6.078 5.809 Efficiency (dB> -2.794 -2.804 -1.7 - 1.051 -1.972 -1.56 -2.281 -3.472 -3.005 Efficiency (%) 0.526 0.524 0.676 0.785 0.635 0.698 0.591 0.45 0.501 Gain (dBi) 1.77 1.834 4.363 4.408 3.846 4.659 3.938 2.606 2.804 Average gain _ -2.794 -2.804 •1.7 -1.051 -1.972 -1.56 -2.281 -3.472 -3.005 Mobile efficiency (%) 52.55% 52.43% 67.61% 78.51% 63.50% 69.82% 59.14% 44.96% 50.06%
MIMO—2一TEST-1 頻率(MHz) 2300 2350 2400 2450 2500 2550 2600 2650 2700 天線淳輸出 功率(dBm) 0 0 0 0 0 0 0 0 0 總幅射功率 (dBm) -2.514 -2.905 -1.816 -1.218 •2.155 -1.372 -2.068 -3.323 -2.495 峰値EIRP (dBm) 1.184 1.248 1.684 2.814 2.641 2.795 2.2 1.763 3.111 方向性(dBi) 3.699 4.153 3.5 4.032 4.796 4.167 4.268 5.086 5.606 效率(dB) -2.514 -2.905 -1.816 -1.218 -2.155 -1.372 -2.068 -3.323 -2.495 效率(％) 0.56 0.512 0.658 0.755 0.609 0.729 0.621 0.465 0.563 增益（dBi) 1.184 1.248 1.684 2.814 2.641 2.795 2.2 1.763 3.111 平均增益 (dB) -2.514 -2.905 -1.816 -1.218 -2.155 1.372 -2.068 -3.323 -2.495 移動效率 (%) 56.05% 51.23% 65.83% 75.54% 60.88% 72.91% 62.12% 46.53% 56.30% 7MIMO—2—TEST-1 Frequency (MHz) 2300 2350 2400 2450 2500 2550 2600 2650 2700 Antenna 淳 Output Power (dBm) 0 0 0 0 0 0 0 0 0 Total Radiated Power (dBm) -2.514 -2.905 -1.816 - 1.218 •2.155 -1.372 -2.068 -3.323 -2.495 Peak 値 EIRP (dBm) 1.184 1.248 1.684 2.814 2.641 2.795 2.2 1.763 3.111 Directionality (dBi) 3.699 4.153 3.5 4.032 4.796 4.167 4.268 5.086 5.606 Efficiency (dB) -2.514 -2.905 -1.816 -1.218 -2.155 -1.372 -2.068 -3.323 -2.495 Efficiency (%) 0.56 0.512 0.658 0.755 0.609 0.729 0.621 0.465 0.563 Gain (dBi) 1.184 1.248 1.684 2.814 2.641 2.795 2.2 1.763 3.111 Average gain (dB) -2.514 -2.905 -1.816 - 1.218 -2.155 1.372 -2.068 -3.323 -2.495 Movement efficiency (%) 56.05% 51.23% 65.83% 75.54% 60.88% 72.91% 62.12% 46.53% 56.30% 7