TW202201853A - Micro dual-band antenna system - Google Patents

Abstract

Provided is a micro dual-band antenna system, which includes : a plurality of antenna units connected to a ground plane. Each antenna unit comprises a substrate, a feeding part disposed on the substrate and a loop structure disposed on the substrate. The loop structure surrounds the feeding part and includes a periphery extending part. Wherein, a coupling gap related to a first resonant mode and a second resonant mode of the antenna units is between the periphery extending part and the feeding part, or the feeding part is connected to the periphery extending part and comprises an electronic unit having an electrical value related to a first resonant mode and a second resonant mode of the antenna units.

Description

微型雙頻帶天線系統Miniature Dual Band Antenna System

本發明是關於一種天線，特別是一種微型雙頻帶天線系統。The present invention relates to an antenna, especially a miniature dual-band antenna system.

目前行動通訊已進入第五代行動通訊技術(fifth generation mobile networks，5G)的時代，因此各種電子裝置內的天線設計也必須符合5G通訊的規格。然而5G天線設計具有困難度。為了因應5G通訊的高速傳輸需求，5G天線設計通常將支援多輸入多輸出(multi-input multi-output，MIMO)技術，這表示電子裝置中需要複數個5G天線單元來形成MIMO系統，而在電子裝置高屏占比的需求增加的情況下，電子裝置內部的天線放置空間也越來越小，也因此該等5G天線的間距必須變小，且天線本身的尺寸也必須縮小，如此將對5G天線單元之間的隔離度將造成極大影響。At present, mobile communication has entered the era of fifth generation mobile networks (5G). Therefore, the design of antennas in various electronic devices must also meet the specifications of 5G communication. However, 5G antenna design is difficult. In order to meet the high-speed transmission requirements of 5G communication, 5G antenna design will usually support multi-input multi-output (MIMO) technology, which means that multiple 5G antenna units are required in electronic devices to form a MIMO system, and in electronic devices As the demand for high screen-to-body ratio of devices increases, the antenna placement space inside electronic devices is getting smaller and smaller. Therefore, the distance between these 5G antennas must be reduced, and the size of the antenna itself must also be reduced. Isolation between antenna elements will have a big impact.

有鑑於此，本發明提供一種新的微型雙頻天線結構，其具備多個天線單元形成MIMO系統，不僅可因應5G傳輸之需求，天線單元之間亦可具備良好的隔離度。In view of this, the present invention provides a new miniature dual-band antenna structure, which has a plurality of antenna units to form a MIMO system, which can not only meet the requirements of 5G transmission, but also have good isolation between the antenna units.

本發明的一目的是提供一種應用於電子裝置上的微型雙頻帶天線系統，包含：複數個天線單元。天線單元各自連接於接地面，並沿著第一方向排列。每個天線單元包含一基板、一饋入部及一迴圈結構。饋入部設置於基板上。迴圈結構設置於基板上，並包圍饋入部，其中迴圈結構包含沿著第一方向延伸的外圍延伸部。其中，外圍延伸部與饋入部之間具備一耦合距離，且耦合距離關聯於天線單元的第一共振模態及第二共振模態，或者饋入部連接外圍延伸部，並包含電子元件，且電子元件的電性數值關聯於第一共振模態及第二共振模態。藉此，本發明的微型雙頻帶天線系統可具備微型體積，適用於窄邊框之電子裝置，且天線單元之間可具備良好的隔離度。An object of the present invention is to provide a miniature dual-band antenna system applied to an electronic device, comprising: a plurality of antenna units. The antenna units are respectively connected to the ground plane and arranged along the first direction. Each antenna unit includes a substrate, a feeding portion and a loop structure. The feeding part is provided on the substrate. The loop structure is disposed on the substrate and surrounds the feeding portion, wherein the loop structure includes a peripheral extension portion extending along the first direction. Wherein, there is a coupling distance between the peripheral extension part and the feeding part, and the coupling distance is related to the first resonance mode and the second resonance mode of the antenna unit, or the feeding part is connected to the peripheral extension part and includes electronic components, and the electronic The electrical value of the element is associated with the first resonance mode and the second resonance mode. Thereby, the miniature dual-band antenna system of the present invention can have a miniature volume, is suitable for an electronic device with a narrow frame, and can have good isolation between the antenna units.

本文提供本發明的不同實施例，這些實施例是用於說明本發明的技術內容，而非用於限制本發明的權利範圍。一實施例的特徵可透過合適的修飾、置換、組合、分離以應用於其他實施例。應注意的是，在本文中，除了特別指明者之外，具備「一」元件不限於具備單一的該元件，而可具備一或更多的該元件。此外，在本文中，除了特別指明者之外，「第一」、「第二」等序數，只是用於區別具有相同名稱的多個元件，並不表示它們之間存在位階、層級、執行順序、或製程順序，例如一「第一」元件與一「第二」元件可能一起出現在同一構件中，或分別出現在不同構件中，且序數較大的一元件的存在不必然表示序數較小的另一元件的存在。另外，在本文中，除了特別指明者之外，所謂的特徵甲「或」（or）或「及/或」（and/or）特徵乙，是指甲單獨存在、乙單獨存在、或甲與乙同時存在；所謂的特徵甲「及」（and）或「與」（and）或「且」（and）特徵乙，是指甲與乙同時存在；所謂的「包括」、「包含」、「具有」、「含有」，是指包括但不限於此。再者，由於人為誤差、量測環境不同等因素，在本文中，除了特別指明者之外，一數值可涵蓋該數值的±10%的範圍，特別是該數值±5%的範圍。除了特別指明者之外，一數值範圍是由較小端點數、較小四分位數、中位數、較大四分位數、及較大端點數所定義的多個子範圍所組成。Different embodiments of the present invention are provided herein, and these embodiments are used to illustrate the technical content of the present invention, but not to limit the scope of the right of the present invention. Features of one embodiment may be applied to other embodiments by suitable modification, substitution, combination, isolation. It should be noted that, in this document, unless otherwise specified, having "a" element is not limited to having a single such element, but may include one or more such elements. In addition, in this document, unless otherwise specified, ordinal numbers such as "first" and "second" are only used to distinguish multiple elements with the same name, and do not mean that there is a rank, hierarchy, or execution order among them , or process sequence, for example, a "first" element and a "second" element may appear together in the same component, or appear separately in different components, and the presence of an element with a larger ordinal number does not necessarily mean a smaller ordinal number. the presence of another element. In addition, in this article, unless otherwise specified, the so-called feature A "or" (or) or "and/or" (and/or) feature B, refers to the existence of nail alone, the existence of B alone, or the existence of A and B The so-called feature A "and" (and) or "and" (and) or "and" (and) feature B, is that nail and B coexist; the so-called "include", "include", "have" , "Contain" means including but not limited to. Furthermore, due to factors such as human error and different measurement environments, unless otherwise specified herein, a numerical value can cover the range of ±10% of the numerical value, especially the range of ±5% of the numerical value. Unless otherwise specified, a numerical range is composed of subranges defined by the lower endpoint, lower quartile, median, higher quartile, and higher endpoint .

圖1是本發明第一型態的一微型雙頻帶天線系統1用於一電子裝置2上之示意圖。如圖1所示，微型雙頻帶天線系統1包含複數個天線單元10，其中部分天線單元10可組成一第一天線群組50，第一天線群組50以外的至少一部分天線單元10可組成一第二天線群組60。電子裝置2包含一接地面3，其中接地面3可以是電子裝置2的一機板，例如顯示螢幕的機板，且在一些實施例中，接地面3可為一金屬接地面。該等天線單元10各自連接於接地面3，並沿著一第一方向(Y)延伸排列，其中第一天線群組50及第二天線群組60分別鄰近於接地面3的相對二側邊3b、3c。此外，每個天線單元10可具備相同或相似(例如差異不多於五個)的結構及大小，而為方便說明，本文皆以每個天線單元10皆相同的態樣來舉例。FIG. 1 is a schematic diagram of a miniature dual-band antenna system 1 used in an electronic device 2 according to the first aspect of the present invention. As shown in FIG. 1 , the miniature dual-band antenna system 1 includes a plurality of antenna units 10 , some of the antenna units 10 may form a first antenna group 50 , and at least a part of the antenna units 10 other than the first antenna group 50 may be A second antenna group 60 is formed. The electronic device 2 includes a ground plane 3 , wherein the ground plane 3 can be a board of the electronic device 2 , such as a board of a display screen, and in some embodiments, the ground plane 3 can be a metal ground plane. The antenna units 10 are respectively connected to the ground plane 3 and extend along a first direction (Y), wherein the first antenna group 50 and the second antenna group 60 are respectively adjacent to two opposite sides of the ground plane 3 . Sides 3b, 3c. In addition, each antenna unit 10 may have the same or similar structure and size (for example, the difference is not more than five), and for the convenience of description, an aspect where each antenna unit 10 is the same is taken as an example.

在一實施例中，天線單元10具有一第一共振模態及一第二共振模態，其中第一共振模態定義為至少可涵蓋3300MHz至3600MHz，第二共振模態定義為至少可涵蓋4800MHz至5000MHz，符合5G傳輸之所需，但不限於此。In one embodiment, the antenna unit 10 has a first resonance mode and a second resonance mode, wherein the first resonance mode is defined to cover at least 3300MHz to 3600MHz, and the second resonance mode is defined to cover at least 4800MHz Up to 5000MHz, which meets the needs of 5G transmission, but is not limited to this.

在此說明電子裝置1。電子裝置1可以是各種具備機板的裝置，例如筆記型電腦、平板電腦、手機、桌上型電腦、各種觸控裝置等，且不限於此；為方便說明，本文皆以電子裝置1為筆記型電腦做為舉例。當電子裝置1是筆記型電腦時，其可具備一鍵盤4。鍵盤4與接地面3可具備相同大小，但並非限定。在一實施例中，電子裝置1是以市售13吋(例如約300

200mm² )筆記型電腦的大小為依據，但本發明亦可用於其它尺寸的筆記型電腦上。在一實施例中，當電子裝置1放置於桌面且為正常使用狀態時(例如接地面3與鍵盤4之間具備至少90度的夾角時)，天線單元10是連接於接地面3的遠離桌面的一長邊3a上。Here, the electronic device 1 will be described. The electronic device 1 can be various devices with a board, such as a notebook computer, a tablet computer, a mobile phone, a desktop computer, various touch devices, etc., and is not limited to this; for the convenience of description, the electronic device 1 is used as a notebook computer as an example. When the electronic device 1 is a notebook computer, it can be provided with a keyboard 4 . The keyboard 4 and the ground plane 3 may have the same size, but are not limited. In one embodiment, the electronic device 1 is a commercially available 13-inch (for example, about 300

200mm ² ) is based on the size of a notebook computer, but the present invention can also be used on notebook computers of other sizes. In one embodiment, when the electronic device 1 is placed on a desktop and is in normal use (for example, when there is an included angle of at least 90 degrees between the ground plane 3 and the keyboard 4 ), the antenna unit 10 is connected to the ground plane 3 away from the desktop. on one of the long sides 3a.

在此說明第一天線群組50及第二天線群組60。第一天線群組50與第二天線群組60之間可具有一間距(第一間距d1)。在一實施例中，第一間距d1可介於80至100毫米(millimeter，mm)之間(亦即80mm≦d1≦100mm)，但不限於此。需注意的是，後續段落中所指之「介於某上限及下限之間」亦涵蓋了等於該上限及該下限之態樣。在一實施例中，第一間距(d1)可介於85mm至95mm之間。在一實施例中，第一間距(d1)為90mm，並可增減0至1mm。此外，在一實施例中，第一天線群組50可鄰近於接地面3的側邊(第一側邊3b)，第二天線群組60可鄰近於另一側邊(第二側邊3c)，其中第一天線群組50與第一側邊3b之間可具備一間距(第二間距d2)，其中，在一實施例中，第二間距d2可介於5至15mm之間。在一實施例中，第一間距為10mm，並可增減0至1mm。另外，在一實施例中，第二天線群組60與第二側邊3c之間亦具有間距，且該間距可等同於第二間距d2，但並非限定。The first antenna group 50 and the second antenna group 60 are described herein. There may be a distance (the first distance d1 ) between the first antenna group 50 and the second antenna group 60 . In one embodiment, the first distance d1 may be between 80 and 100 millimeters (millimeter, mm) (ie, 80mm≦d1≦100mm), but not limited thereto. It should be noted that "between a certain upper limit and a lower limit" referred to in the subsequent paragraphs also covers aspects equal to the upper limit and the lower limit. In one embodiment, the first distance (d1) may be between 85mm and 95mm. In one embodiment, the first distance ( d1 ) is 90 mm, which can be increased or decreased by 0 to 1 mm. In addition, in one embodiment, the first antenna group 50 may be adjacent to one side of the ground plane 3 (the first side 3b), and the second antenna group 60 may be adjacent to the other side (the second side). side 3c), wherein a distance (the second distance d2) may be provided between the first antenna group 50 and the first side 3b, wherein, in one embodiment, the second distance d2 may be between 5 and 15 mm between. In one embodiment, the first distance is 10 mm, which can be increased or decreased by 0 to 1 mm. In addition, in an embodiment, there is also a distance between the second antenna group 60 and the second side 3c, and the distance can be equal to the second distance d2, but it is not limited.

第一天線群組50或第二天線群組60可由至少二天線單元10以一固定間距(第三間距d3)間隔排列而組成。在一實施例中，固定間距d3實質上小於或等於第一共振模態(例如3300MHz~3600MHz)所能涵蓋的最小頻率(例如3300MHz)所對應的波長的0.055倍(d3≦0.055λ，其中λ為第一共振模態所能涵蓋的最小頻率所對應的波長)。在一實施例中，第三間距d3可介於0.5至1.5mm之間。在一實施例中，第三間距d3可為1mm，並可增減0至0.1mm。在一實施例中，相鄰的二天線單元10之間的第三間距d3可被填補一金屬片(圖未顯示)，即相鄰二天線單元以該金屬片而隔開，但並非限定。為方便說明，本文皆以第一天線群組50及第二天線群組60皆由四個天線單元10(Ant1~Ant4、Ant5~Ant8)以第三間距d3間隔排列而組成之態樣來舉例。The first antenna group 50 or the second antenna group 60 can be formed by at least two antenna units 10 arranged at intervals with a fixed distance (the third distance d3 ). In one embodiment, the fixed distance d3 is substantially less than or equal to 0.055 times the wavelength corresponding to the minimum frequency (eg, 3300MHz) that can be covered by the first resonance mode (eg, 3300MHz~3600MHz) (d3≦0.055λ, where λ is the wavelength corresponding to the minimum frequency that the first resonance mode can cover). In one embodiment, the third distance d3 may be between 0.5 and 1.5 mm. In one embodiment, the third distance d3 may be 1 mm, and may be increased or decreased by 0 to 0.1 mm. In one embodiment, the third distance d3 between two adjacent antenna units 10 can be filled with a metal sheet (not shown), that is, the two adjacent antenna units are separated by the metal sheet, but it is not limited. For the convenience of description, the first antenna group 50 and the second antenna group 60 are both composed of four antenna units 10 (Ant1-Ant4, Ant5-Ant8) arranged at intervals of a third distance d3. Take an example.

另外，第一天線群組50具備在第一方向(Y)上延伸的一長度(第一長度L1)，其中第一長度L1可介於90至100mm之間；在一實施例中，第一長度L1可為95mm，並可增減0至1mm。第一天線群組50亦具備在一第二方向(Z)上延伸的一高度(定義為第一寬度W1)，其中第二方向(Z)可實質上正交於第一方向(Y)，但並非限定。在一實施例中，第一寬度W1實質上小於或等於第一共振模態所能涵蓋的最小頻率所對應的波長的0.055倍(W1≦0.055λ)。在一實施例中，第一寬度W1可介於1至3mm之間。在一實施例中，第一寬度W1可為2mm，並可增減0至0.1mm。在一實施例中，第二天線群組亦具備第一長度L1及第一寬度W1，但並非限定。據此，天線單元10自接地面3延伸出來的寬度僅在3mm以下，故適用於各種窄邊框設計的電子裝置1。In addition, the first antenna group 50 has a length (first length L1) extending in the first direction (Y), wherein the first length L1 may be between 90 and 100 mm; in one embodiment, the first length L1 A length L1 can be 95mm and can be increased or decreased by 0 to 1mm. The first antenna group 50 also has a height (defined as a first width W1 ) extending in a second direction (Z), wherein the second direction (Z) may be substantially orthogonal to the first direction (Y) , but not limited. In one embodiment, the first width W1 is substantially less than or equal to 0.055 times the wavelength corresponding to the minimum frequency covered by the first resonance mode (W1≦0.055λ). In one embodiment, the first width W1 may be between 1 and 3 mm. In one embodiment, the first width W1 may be 2 mm, and may be increased or decreased by 0 to 0.1 mm. In one embodiment, the second antenna group also has a first length L1 and a first width W1, but it is not limited. Accordingly, the width of the antenna unit 10 extending from the ground plane 3 is only less than 3 mm, so it is suitable for electronic devices 1 with various narrow frame designs.

接著說明天線單元10，並請同時參考圖1至圖3，其中圖2是本發明一實施例的天線單元10的結構示意圖，圖3是本發明一實施例的天線單元10的結構尺寸示意圖。由於每個天線單元10的結構與大小可相同，因此本文僅以單一個單天線元件10的結構來舉例說明。Next, the antenna unit 10 will be described, and please refer to FIG. 1 to FIG. 3 at the same time. FIG. 2 is a schematic structural diagram of the antenna unit 10 according to an embodiment of the present invention, and FIG. 3 is a schematic structural dimension diagram of the antenna unit 10 according to an embodiment of the present invention. Since the structure and size of each antenna element 10 may be the same, the structure of a single single antenna element 10 is only used as an example herein.

如圖2所示，天線單元10可包含一基板11、一饋入部12及一迴圈結構13，其中饋入部12及迴圈結構13為金屬。饋入部12設置於基板11上，亦即以一第三方向(X)觀之，饋入部12與基板11重疊，其中第三方向(X)實質上與第一方向(Y)及第二方向(Z)正交。饋入部12包含沿著第二方向(Z)延伸的一饋入端121以及沿著第一方向(Y)延伸的一饋入部頂部122。此外，迴圈結構13亦設置於基板11上。此外，迴圈結構13包圍饋入部12，使饋入部12位於接地面3及迴圈結構13之間。在一實施例中，饋入部12的形狀可以是T型或類似T型，且饋入部頂部122可以是沿著第一方向(Y)延伸的T型頂部或類T型頂部，但在另一實施例中，饋入部12亦可具備其他形狀，只要該形狀能讓饋入部12與外圍延伸部131透過耦合來產生所需的共振模態即可。為方便說明，下文中是以饋入部12為T型饋入部的態樣來舉例說明。As shown in FIG. 2 , the antenna unit 10 may include a substrate 11 , a feeding portion 12 and a loop structure 13 , wherein the feeding portion 12 and the loop structure 13 are made of metal. The feeding portion 12 is disposed on the substrate 11, that is, viewed from a third direction (X), the feeding portion 12 overlaps with the substrate 11, wherein the third direction (X) is substantially the same as the first direction (Y) and the second direction (Z) Orthogonal. The feeding portion 12 includes a feeding end 121 extending along the second direction (Z) and a feeding portion top 122 extending along the first direction (Y). In addition, the loop structure 13 is also disposed on the substrate 11 . In addition, the loop structure 13 surrounds the feeding portion 12 so that the feeding portion 12 is located between the ground plane 3 and the loop structure 13 . In one embodiment, the shape of the feed-in portion 12 may be T-shaped or T-like, and the feed-in portion top 122 may be a T-shaped top or T-like top extending along the first direction (Y), but in another In the embodiment, the feed-in portion 12 may also have other shapes, as long as the shape enables the feed-in portion 12 and the peripheral extension portion 131 to generate a desired resonance mode through coupling. For the convenience of description, the following is an example in which the feed-in part 12 is a T-shaped feed-in part.

在一實施例中，基板11為FR4玻璃纖維基板，且其相對介電常數(relative dielectric constant)實質上為4.4，其正切損耗(loss tangent)實質上為0.02，但本發明不限於此，只要合理，基板11的相對介電常數及正切損耗可視需求而調整為其它適當值。In one embodiment, the substrate 11 is a FR4 glass fiber substrate, and its relative dielectric constant is substantially 4.4, and its tangent loss is substantially 0.02, but the invention is not limited to this, as long as Reasonably, the relative permittivity and tangent loss of the substrate 11 can be adjusted to other appropriate values according to requirements.

在一實施例中，饋入端121連接於饋入部頂部122的非中心處，因此饋入部12可為非對稱結構，但並非限定，在另一實施例中，饋入端121亦連接於饋入部頂部122的中心處。在一實施例中，饋入端121具有一電流饋入點A，用以供電流饋入，而當電流饋入後，天線單元10可激發出複數個共振模態。該電流饋入點A可鄰近接地面3並遠離饋入部頂部122。此外，接地面3上具有一接地點G，其位置可與電流饋入點A的位置相對應。在一實施例中，電流饋入點A及接地點G可連接至一50歐姆(50ohm)的同軸傳輸線。In one embodiment, the feeding end 121 is connected to the non-center of the top 122 of the feeding portion, so the feeding portion 12 can be asymmetrical, but not limited. In another embodiment, the feeding end 121 is also connected to the feeding portion 121. into the center of the top portion 122 . In one embodiment, the feeding end 121 has a current feeding point A for feeding the current, and when the current is fed, the antenna unit 10 can excite a plurality of resonance modes. The current feeding point A may be adjacent to the ground plane 3 and away from the top 122 of the feeding portion. In addition, the ground plane 3 has a ground point G, the position of which can correspond to the position of the current feeding point A. In one embodiment, the current feeding point A and the ground point G may be connected to a 50 ohm (50 ohm) coaxial transmission line.

在一實施例中，迴圈結構13包含一外圍延伸部131、一第一短路部132、一第一延伸部133、一第二延伸部134、一第二短路部135、一第三延伸部136及一第四延伸部137。外圍延伸部131鄰近於饋入部頂部122，並與基板11的最外側貼齊。第一短路部132與接地面3連接，並沿著第二方向(Z)延伸。第一延伸部133連接第一短路部132並沿著第一方向(Y)的反方向延伸，其中第一延伸部133與第一短路部132之間形成一彎折。第二延伸部134連接第一延伸部133及外圍延伸部131，其自第一延伸部133沿著第二方向(Z)延伸至外圍延伸部131，因此第二延伸部134與第一延伸部133之間以及與外圍延伸部131之間皆形成一彎折。第二短路部135與接地面3連接，並沿著第二方向(Z)延伸。第三延伸部136連接第二短路部135，並沿著第一方向(Y)延伸，因此第三延伸部136與第二短路部135之間形成彎折。第四延伸部137連接第三延伸部136及外圍延伸部131，並自第三延伸部136沿著第二方向(Z)延伸至外圍延伸部131，因此第四延伸部137與第三延伸部136之間形成彎折，並與外圍延伸部131之間形成彎折。此外，第一短路部132比第二延伸部134鄰近饋入部12，第二短路部135比第四延伸部137鄰近饋入部12。在一實施例中，饋入端121鄰近第二短路部136，並遠離第一短路部132。In one embodiment, the loop structure 13 includes a peripheral extension portion 131 , a first short-circuit portion 132 , a first extension portion 133 , a second extension portion 134 , a second short-circuit portion 135 , and a third extension portion 136 and a fourth extension 137 . The peripheral extension portion 131 is adjacent to the top portion 122 of the feeding portion, and is aligned with the outermost side of the substrate 11 . The first short-circuit portion 132 is connected to the ground plane 3 and extends along the second direction (Z). The first extension portion 133 is connected to the first short-circuit portion 132 and extends along the opposite direction of the first direction (Y), wherein a bend is formed between the first extension portion 133 and the first short-circuit portion 132 . The second extension portion 134 is connected to the first extension portion 133 and the peripheral extension portion 131 , and extends from the first extension portion 133 to the peripheral extension portion 131 along the second direction (Z), so the second extension portion 134 is connected to the first extension portion 131 . A bend is formed between the 133 and the peripheral extension portion 131 . The second short-circuit portion 135 is connected to the ground plane 3 and extends along the second direction (Z). The third extension portion 136 is connected to the second short-circuit portion 135 and extends along the first direction (Y), so a bend is formed between the third extension portion 136 and the second short-circuit portion 135 . The fourth extension portion 137 connects the third extension portion 136 and the peripheral extension portion 131, and extends from the third extension portion 136 to the peripheral extension portion 131 along the second direction (Z), so the fourth extension portion 137 and the third extension portion A bend is formed between 136 and a bend is formed with the peripheral extension 131 . In addition, the first short-circuit portion 132 is closer to the feeding portion 12 than the second extending portion 134 is, and the second short-circuit portion 135 is closer to the feeding portion 12 than the fourth extending portion 137 is. In one embodiment, the feeding end 121 is adjacent to the second short-circuit portion 136 and away from the first short-circuit portion 132 .

在一實施例中，第一短路部132連接於接地面3處形成一第一短路點D1。第二短路部135連接於接地面3處形成一第二短路點D2，因此迴圈結構13可形成一雙短路迴圈金屬結構。In one embodiment, the first short-circuit portion 132 is connected to the ground plane 3 to form a first short-circuit point D1 . The second short circuit portion 135 is connected to the ground plane 3 to form a second short circuit point D2, so the loop structure 13 can form a double short circuit loop metal structure.

又如圖3所示，饋入端121具有在第二方向(Z)上延伸的一長度(第三長度L3)，在一實施例中，第三長度L3可為0.7mm，並可增減0至0.1mm。饋入端121亦具有在第一方向(Y)上延伸的一寬度(第三寬度W3)，在一實施例中，第三寬度W3可為0.5mm，並可增減0至0.1mm。此外，饋入部頂部122具有在第二方向(Z)上延伸的一寬度(第四寬度W4)，在一實施例中，第四寬度W4可為0.4mm，並可增減0至0.1mm。饋入部頂部122亦具有在第一方向(Y)上延伸的一長度(第四長度L4)，在一實施例中，第四長度L4可為6.5mm，並可增減0至0.1mm。另外， 饋入部頂部122與接地面3之間具有一最短距離(第四間距d4)，在一實施例中，第四間距d4可為1mm，並可增減0至0.1mm。Also as shown in FIG. 3 , the feeding end 121 has a length (third length L3 ) extending in the second direction (Z). In one embodiment, the third length L3 may be 0.7 mm, and may be increased or decreased 0 to 0.1mm. The feeding end 121 also has a width (third width W3) extending in the first direction (Y). In one embodiment, the third width W3 may be 0.5 mm, and may be increased or decreased by 0 to 0.1 mm. In addition, the top portion 122 of the feeding portion has a width (the fourth width W4 ) extending in the second direction (Z). In one embodiment, the fourth width W4 may be 0.4 mm, and may be increased or decreased by 0 to 0.1 mm. The top portion 122 of the feeding portion also has a length (the fourth length L4 ) extending in the first direction (Y). In one embodiment, the fourth length L4 may be 6.5 mm, and may be increased or decreased by 0 to 0.1 mm. In addition, there is a shortest distance (a fourth distance d4 ) between the top 122 of the feeding portion and the ground plane 3 . In one embodiment, the fourth distance d4 may be 1 mm, which may be increased or decreased by 0 to 0.1 mm.

外圍延伸部131具有在第一方向(Y)上延伸的一長度(第二長度L2)。在一實施例中，第二長度L2實質上小於或等於第一共振模態(例如3300MHz~3600MHz)所能涵蓋的最小頻率(例如3300MHz)所對應的波長的0.33倍(L2≦0.33λ)。在一實施例中，第二長度L2為23mm，並可增減0至1mm。外圍延伸部131亦具有在第二方向(Z)上延伸的一寬度(第二寬度W2)，在一實施例中，第二寬度W2為0.4mm，並可增減0至0.1mm。此外，外圍延伸部131與饋入部12的饋入部頂部122之間具有一最短距離(耦合距離g1)。在一實施例中，耦合距離g1實質上小於或等於第一共振模態所能涵蓋的最小頻率所對應的波長的0.011倍(g1≦0.011λ)。在一實施例中，耦合距離g1可介於0.1至0.3mm之間。在一實施例中，耦合距離g1可為0.2mm，並可增減0至0.1mm。The peripheral extension 131 has a length (second length L2 ) extending in the first direction (Y). In one embodiment, the second length L2 is substantially less than or equal to 0.33 times (L2≦0.33λ) of the wavelength corresponding to the minimum frequency (eg, 3300MHz) covered by the first resonance mode (eg, 3300MHz˜3600MHz). In one embodiment, the second length L2 is 23 mm, which can be increased or decreased by 0 to 1 mm. The peripheral extension portion 131 also has a width (the second width W2 ) extending in the second direction (Z). In one embodiment, the second width W2 is 0.4 mm, which can be increased or decreased by 0 to 0.1 mm. In addition, there is a shortest distance (coupling distance g1 ) between the peripheral extending portion 131 and the feeding portion top 122 of the feeding portion 12 . In one embodiment, the coupling distance g1 is substantially less than or equal to 0.011 times the wavelength corresponding to the minimum frequency covered by the first resonance mode (g1≦0.011λ). In one embodiment, the coupling distance g1 may be between 0.1 and 0.3 mm. In one embodiment, the coupling distance g1 may be 0.2 mm, and may be increased or decreased by 0 to 0.1 mm.

第一短路部132具有在第一方向(Y)上延伸的一寬度(第五寬度W5)，在一實施例中，第五寬度W5為0.5mm，並可增減0至0.1mm。第一短路部133亦具有在第二方向(Z)上延伸的一長度(第五長度L5)，第五長度L5亦可視為第一延伸部133與接地面3之有的一最短距離。在一實施例中，第五長度L5為0.8mm，並可增減0至0.1mm。The first short-circuit portion 132 has a width (the fifth width W5 ) extending in the first direction (Y). In one embodiment, the fifth width W5 is 0.5 mm, which can be increased or decreased by 0 to 0.1 mm. The first short-circuit portion 133 also has a length (the fifth length L5 ) extending in the second direction (Z), and the fifth length L5 can also be regarded as a shortest distance between the first extension portion 133 and the ground plane 3 . In one embodiment, the fifth length L5 is 0.8 mm, which can be increased or decreased by 0 to 0.1 mm.

第一延伸部133具有在第一方向(Y)上延伸的一長度(第六長度L6)，在一實施例中，第六長度L6為2mm，並可增減0至0.1mm。第一延伸部133亦具有在第二方向(Z)上延伸的一寬度(第六寬度W6)。此外，第二延伸部134具有在第一方向(Y)上延伸的一長度(第七長度L7)，在一實施例中，第七長度L7為0.5mm，並可增減0至0.1mm。第二延伸部134亦具有在第二方向(Z)上延伸的一寬度(第七寬度W7)，第一寬度W7亦可視為外圍延伸部131與第一延伸部133之間的最短距離。在一實施例中，第七寬度W7為0.3mm，並可增減0至0.1mm。The first extension portion 133 has a length (sixth length L6 ) extending in the first direction (Y). In one embodiment, the sixth length L6 is 2 mm, which can be increased or decreased by 0 to 0.1 mm. The first extension portion 133 also has a width (sixth width W6 ) extending in the second direction (Z). In addition, the second extending portion 134 has a length (seventh length L7 ) extending in the first direction (Y). In one embodiment, the seventh length L7 is 0.5 mm, which can be increased or decreased by 0 to 0.1 mm. The second extension portion 134 also has a width (seventh width W7 ) extending in the second direction (Z). The first width W7 can also be regarded as the shortest distance between the peripheral extension portion 131 and the first extension portion 133 . In one embodiment, the seventh width W7 is 0.3 mm, which can be increased or decreased by 0 to 0.1 mm.

第二短路部135具有在第一方向(Y)上延伸的一寬度(第八寬度W8)，在一實施例中，第八寬度W8為0.5mm，並可增減0至0.1mm。第二短路部135亦具有在第二方向(Z)上延伸的一長度(第八長度L8)，第八長度L8亦可視為第三延伸部136與接地面3之間的最短距離。在一實施例中，第八長度L8為1mm，並可增減0至0.1mm。The second short-circuit portion 135 has a width (eighth width W8 ) extending in the first direction (Y). In one embodiment, the eighth width W8 is 0.5 mm, which can be increased or decreased by 0 to 0.1 mm. The second short-circuit portion 135 also has a length (eighth length L8 ) extending in the second direction (Z), and the eighth length L8 can also be regarded as the shortest distance between the third extension portion 136 and the ground plane 3 . In one embodiment, the eighth length L8 is 1 mm, which can be increased or decreased by 0 to 0.1 mm.

第三延伸部136具有在第一方向(Y)上延伸的一長度(第九長度L9)以及在第二方向(Z)上延伸的一寬度(第九寬度W9)，在一實施例中，第九長度L9為11.4mm，並可增減0至1mm。The third extension portion 136 has a length (ninth length L9) extending in the first direction (Y) and a width (ninth width W9) extending in the second direction (Z). In one embodiment, The ninth length L9 is 11.4mm, and can be increased or decreased by 0 to 1mm.

第四延伸部137具有在第一方向(Y)上延伸的一長度(第十長度L10)，並且具有在第二方向(Z)上延伸的一寬度(第十寬度W10)。在一實施例中，第十長度L10為0.5mm，並可增減0至0.1mm。在一實施例中，第十寬度W10為0.3mm，並可增減0至0.1mm。此外，第十寬度W10可視為外圍延伸部131與第三延伸部136之間的最短距離。The fourth extension 137 has a length (tenth length L10 ) extending in the first direction (Y) and a width (tenth width W10 ) extending in the second direction (Z). In one embodiment, the tenth length L10 is 0.5 mm, which can be increased or decreased by 0 to 0.1 mm. In one embodiment, the tenth width W10 is 0.3 mm, which can be increased or decreased by 0 to 0.1 mm. In addition, the tenth width W10 may be regarded as the shortest distance between the peripheral extension portion 131 and the third extension portion 136 .

由此可知，天線單元10是透過饋入部12耦合激發迴圈結構13的平衡式共振模態設計，因此能產生5G傳輸所需的第一共振模態及第二共振模態。From this, it can be seen that the antenna unit 10 is designed to be a balanced resonance mode in which the loop structure 13 is coupled through the feeding portion 12 , so that the first resonance mode and the second resonance mode required for 5G transmission can be generated.

接著將針對微型雙頻帶天線系統1的實驗結果進行說明；需注意的是，此處「實驗」可例如是利用天線模擬軟體(例如ANSYS HFSS軟體)所進行的模擬實驗，或者是利用天線實品進行的實體量測實驗，且不限於此。Next, the experimental results of the miniature dual-band antenna system 1 will be described; it should be noted that the "experiment" here can be, for example, a simulation experiment performed using an antenna simulation software (such as ANSYS HFSS software), or an actual antenna. The physical measurement experiments performed are not limited thereto.

首先針對微型雙頻帶天線系統1的操作頻帶進行說明。圖4是本發明一實施例的微型雙頻帶天線系統1(第一型態)的反射係數(reflection coefficient)的實驗結果圖。圖4是以業界常用的反射係數小於-6dB之條件做為微型雙頻帶天線系統1的操作頻帶之依據，此外S11表示為天線單元Ant1的反射係數，S22表示為天線單元Ant2的反射係數，並依此類推。如圖4所示，微型雙頻帶天線系統1中的每個天線單元10在5G傳輸所需的操作頻段(3300至3600MHz及4800至5000MHz)皆具備低於-6dB的反射係數，因此每個天線單元10皆可產生兩個適用5G傳輸的共振模態。First, the operating frequency band of the miniature dual-band antenna system 1 will be described. FIG. 4 is a graph showing experimental results of reflection coefficients of the miniature dual-band antenna system 1 (the first type) according to an embodiment of the present invention. Figure 4 uses the condition that the reflection coefficient is less than -6dB commonly used in the industry as the basis for the operating frequency band of the miniature dual-band antenna system 1. In addition, S11 is the reflection coefficient of the antenna unit Ant1, S22 is the reflection coefficient of the antenna unit Ant2, and So on and so forth. As shown in FIG. 4 , each antenna unit 10 in the miniature dual-band antenna system 1 has a reflection coefficient lower than -6dB in the operating frequency bands (3300-3600MHz and 4800-5000MHz) required for 5G transmission, so each antenna Each unit 10 can generate two resonance modes suitable for 5G transmission.

接著針對微型雙頻帶天線系統1的隔離度進行說明。圖5(A)是本發明一實施例的微型雙頻帶天線系統1(第一型態)的傳輸係數(transmission coefficient)的第一實驗結果圖，圖5(B)是本發明一實施例的微型雙頻帶天線系統1(第一型態)的傳輸係數的第二實驗結果圖，其中圖5(A)用於說明第一天線群組50中的各天線單元10之間的隔離度，圖5(B)用於說明第一天線群組50與第二天線群組60之間的隔離度。在圖5(A)及圖5(B)中，S12表示天線單元Ant1與天線單元Ant2之間的傳輸係數，S23表示天線單元Ant2及天線單元Ant3之間的傳輸係數，並依此類推。由於在業界的慣例中，若二天線元件之間的傳輸係數小於-10dB表示該二天線元件之間具備良好的隔離度，因此本文亦以傳輸係數小於-10dB做為隔離度是否符合需求的依據。另外，由於第一天線群組50與第一天線群組60可具備相同大小及數量的天線單元10，且二群組中的天線單元10的排列方式亦可相同，因此圖5(A)的內容亦可用於說明第二天線群組60中各天線單元10之間的隔離度。Next, the isolation degree of the micro dual-band antenna system 1 will be described. FIG. 5(A) is a first experimental result diagram of the transmission coefficient of the miniature dual-band antenna system 1 (the first type) according to an embodiment of the present invention, and FIG. 5(B) is an embodiment of the present invention. The second experimental result diagram of the transmission coefficient of the miniature dual-band antenna system 1 (the first type), wherein FIG. 5(A) is used to illustrate the isolation between the antenna elements 10 in the first antenna group 50, FIG. 5(B) is used to illustrate the isolation between the first antenna group 50 and the second antenna group 60 . In FIG. 5(A) and FIG. 5(B), S12 represents the transmission coefficient between the antenna element Ant1 and the antenna element Ant2, S23 represents the transmission coefficient between the antenna element Ant2 and the antenna element Ant3, and so on. Because in the industry practice, if the transmission coefficient between two antenna elements is less than -10dB, it means that the two antenna elements have good isolation, so this paper also uses the transmission coefficient less than -10dB as the basis for whether the isolation meets the requirements. . In addition, since the first antenna group 50 and the first antenna group 60 may have the same size and number of antenna units 10, and the arrangement of the antenna units 10 in the two groups may be the same, therefore, FIG. 5 (A ) can also be used to describe the isolation between the antenna units 10 in the second antenna group 60 .

如圖5(A)所示，傳輸係數S12、S13、S14、S23、S24、S34在3300至3600MHz的頻段及4800至5000的頻段皆低於-10dB，表示天線單元Ant1~Ant4之間皆可具備良好的隔離度。由於第二天線群組60中各天線單元10的配置與第一天線群組50相同，故可直接適用圖5(A)的結果。又如圖5(B)所示，傳輸係數S45、S46、S47、S48在3300至3600MHz的頻段及4800至5000的頻段皆低於-10dB，表示第一天線群組50中最接近第二天線群組60的天線單元Ant4與第二天線群組60中的各天線單元Ant5~Ant8之間皆具備良好的隔離度，亦即第一天線群組50與第二天線群組60之間具備良好的隔離度。此外，由於天線單元Ant4與第二天線群組60之間的第一距離d1遠大於第一天線群組50中各天線單元10之間的間距，因此傳輸係數S45~S48會具備比傳輸係數S12~S34更好的隔離度。各天線單元10之間具備良好隔離度的原因之一在於，每個天線單元10採用了透過饋入部12耦合迴圈結構13的平衡式共振模態設計，大部分的電流會在迴圈結構13之中流動而不會或少量(例如流入相鄰天線單元10的電流僅是迴圈結構13中的電流的50%以下)流入相鄰的天線單元10，也因此各天線單元10之間可具備良好的隔離度。As shown in Figure 5(A), the transmission coefficients S12, S13, S14, S23, S24, and S34 are all lower than -10dB in the frequency band of 3300 to 3600 MHz and the frequency band of 4800 to 5000, which means that the antenna elements Ant1 to Ant4 can be used. Has good isolation. Since the configuration of each antenna unit 10 in the second antenna group 60 is the same as that of the first antenna group 50, the result of FIG. 5(A) can be directly applied. As shown in FIG. 5(B), the transmission coefficients S45, S46, S47, and S48 are all lower than -10dB in the frequency band of 3300 to 3600 MHz and the frequency band of 4800 to 5000, indicating that the first antenna group 50 is closest to the second Good isolation is provided between the antenna unit Ant4 of the antenna group 60 and the antenna units Ant5-Ant8 of the second antenna group 60, that is, the first antenna group 50 and the second antenna group 60 with good isolation. In addition, since the first distance d1 between the antenna unit Ant4 and the second antenna group 60 is much larger than the distance between the antenna units 10 in the first antenna group 50 , the transmission coefficients S45 to S48 have a higher ratio than the transmission coefficients S45 to S48 . The coefficients S12~S34 have better isolation. One of the reasons for the good isolation between the antenna units 10 is that each antenna unit 10 adopts a balanced resonant mode design in which the loop structure 13 is coupled through the feeding portion 12 , and most of the current flows in the loop structure 13 . There is no or a small amount (for example, the current flowing into the adjacent antenna elements 10 is only 50% or less of the current in the loop structure 13 ) flowing into the adjacent antenna elements 10 , and therefore, there may be provided between the antenna elements 10 good isolation.

接著針對微型雙頻帶天線系統1的封包係數(envelope correlation coefficient，ECC)進行說明。圖6(A)是本發明一實施例的微型雙頻帶天線系統1(第一型態)的封包係數的第一實驗結果圖，圖6(B)是本發明一實施例的微型雙頻帶天線系統1(第一型態)的封包係數的第二實驗結果圖，其中圖6(A)用於說明第一天線群組50中的各天線單元10之間的封包係數，圖6(B)用於說明第一天線群組50與第二天線群組60之間的封包係數。對於MIMO天線系統而言，封包係數小於0.5將可符合業界使用的標準，其中封包係數關聯於各天線之間的通道獨立性。此外在圖6(A)及6(B)中，二天線單元10之間的封包係數是在二天線單元10之間加入橫線符號，例如Ant1-Ant2即是表示天線單元Ant1與Ant2之間的封包係數，並依此類推。Next, the envelope correlation coefficient (ECC) of the miniature dual-band antenna system 1 will be described. FIG. 6(A) is a graph of the first experimental result of the packing coefficient of the miniature dual-band antenna system 1 (the first type) according to an embodiment of the present invention, and FIG. 6(B) is a diagram of the miniature dual-band antenna according to an embodiment of the present invention. The second experimental result diagram of the packing coefficient of the system 1 (the first type), in which FIG. 6(A) is used to illustrate the packing coefficient between the antenna elements 10 in the first antenna group 50, and FIG. 6(B) ) is used to describe the packing coefficient between the first antenna group 50 and the second antenna group 60 . For a MIMO antenna system, a packing factor less than 0.5 will meet the standard used in the industry, where the packing factor is related to the channel independence between the antennas. In addition, in FIGS. 6(A) and 6(B), the packing coefficient between the two antenna units 10 is a horizontal line symbol between the two antenna units 10. For example, Ant1-Ant2 represents the distance between the antenna units Ant1 and Ant2. , and so on.

如圖6(A)所示，第一天線群組50中的各天線單元10之間的封包係數皆小於0.5，表示第一天線群組50中的各天線之間的通道獨立性可符合業界需求。由於第二天線群組60中各天線單元10的配置與第一天線群組50相同，故可直接適用圖6(A)的結果。又如圖6(B)所示，第一天線群組50中的天線單元Ant4與第二天線群組60中的各天線單元Ant5~Ant8之間的封包係數亦皆小於0.5，因此表示第一天線群組50與第二天線群組60之間的通道獨立性亦符合業界需求。As shown in FIG. 6(A) , the packing coefficients between the antenna units 10 in the first antenna group 50 are all less than 0.5, indicating that the channel independence between the antennas in the first antenna group 50 can be Meet the needs of the industry. Since the configuration of each antenna unit 10 in the second antenna group 60 is the same as that of the first antenna group 50, the result of FIG. 6(A) can be directly applied. Also as shown in FIG. 6(B), the packing coefficients between the antenna unit Ant4 in the first antenna group 50 and the antenna units Ant5-Ant8 in the second antenna group 60 are also less than 0.5, so it means that The channel independence between the first antenna group 50 and the second antenna group 60 also meets industry requirements.

接著針對微型雙頻帶天線系統1的天線效率進行說明。圖7是本發明一實施例的微型雙頻帶天線系統1(第一型態)的天線效率的實驗結果圖。圖7是以業界常用的天線效率高於35%之條件做為評估依據。如圖7所示，每個天線單元10在5G傳輸所需的操作頻段(3300至3600MHz及4800至5000MHz)皆具備高於35%的天線效率，因此微型雙頻帶天線系統1能符合業界的需求。Next, the antenna efficiency of the miniature dual-band antenna system 1 will be described. FIG. 7 is a graph showing experimental results of the antenna efficiency of the miniature dual-band antenna system 1 (the first type) according to an embodiment of the present invention. Figure 7 is based on the condition that the antenna efficiency commonly used in the industry is higher than 35%. As shown in FIG. 7 , each antenna unit 10 has an antenna efficiency higher than 35% in the operating frequency bands (3300 to 3600 MHz and 4800 to 5000 MHz) required for 5G transmission, so the miniature dual-band antenna system 1 can meet the needs of the industry .

接著針對微型雙頻帶天線系統1的設計機制進行說明。圖8是本發明一實施例的天線單元10的一第一參數對應反射係數之實驗結果圖，其用於顯示天線單元10的第一參數調整時，反射係數的變化情形，其中第一參數是定義為外圍延伸部131與該饋入部頂部122之間的耦合距離g1。如圖8所示，當耦合距離g1由0.3mm縮小至0.1mm時，第一共振模態及第二共振模態皆有明顯的降頻趨勢，因此可知第一共振模態及第二共振模態會受到耦合距離g1的影響，其中當耦合距離g1越小，饋入部12與迴圈結構13之間的耦合能量將越大，進而使第一共振模態及第二共振模態發生降頻的趨勢。Next, the design mechanism of the miniature dual-band antenna system 1 will be described. 8 is a graph showing the experimental result of the reflection coefficient corresponding to a first parameter of the antenna unit 10 according to an embodiment of the present invention, which is used to display the change of the reflection coefficient when the first parameter of the antenna unit 10 is adjusted, wherein the first parameter is It is defined as the coupling distance g1 between the peripheral extension portion 131 and the top portion 122 of the feeding portion. As shown in Figure 8, when the coupling distance g1 is reduced from 0.3mm to 0.1mm, the first resonance mode and the second resonance mode both have obvious frequency reduction trends, so it can be seen that the first resonance mode and the second resonance mode The state will be affected by the coupling distance g1, and when the coupling distance g1 is smaller, the coupling energy between the feed-in portion 12 and the loop structure 13 will be larger, and the frequency of the first resonance mode and the second resonance mode will be reduced. the trend of.

圖9是本發明一實施例的天線單元10的一第二參數對應反射係數之實驗結果圖，其用於顯示天線單元10的第二參數調整時，反射係數的變化情形，其中第二參數是定義為外圍延伸部131於第一方向(Y)上的長度(即第二長度L2)。如圖9所示，當第二長度L2由25mm縮小至21mm時，第一共振模態及第二共振模態皆有明顯的升頻趨勢，因此可知第一共振模態及第二共振模態會受到第二長度L2的影響，換言之，迴圈結構13的尺寸將會對第一共振模態及第二共振模態產生影響。FIG. 9 is a graph showing the experimental result of the reflection coefficient corresponding to a second parameter of the antenna unit 10 according to an embodiment of the present invention, which is used to display the change of the reflection coefficient when the second parameter of the antenna unit 10 is adjusted, wherein the second parameter is It is defined as the length of the peripheral extension portion 131 in the first direction (Y) (ie, the second length L2 ). As shown in FIG. 9 , when the second length L2 is reduced from 25mm to 21mm, both the first resonance mode and the second resonance mode have an obvious upward frequency trend, so it can be seen that the first resonance mode and the second resonance mode It will be affected by the second length L2, in other words, the size of the loop structure 13 will affect the first resonance mode and the second resonance mode.

由圖8及圖9可知，耦合距離g1及第二長度L2將會影響第一共振模態及第二共振模態，因此本發明之設計將可透過耦合距離g1及第二長度L2來調整所需的共振模態及共振頻率點。It can be seen from FIG. 8 and FIG. 9 that the coupling distance g1 and the second length L2 will affect the first resonance mode and the second resonance mode, so the design of the present invention can adjust the coupling distance g1 and the second length L2 through the coupling distance g1 and the second length L2. The desired resonance mode and resonance frequency point.

此外，本發明的第一天線群組50及第二天線群組60之間亦可有不同的配置方式。圖10是本發明第二型態的微型雙頻帶天線系統1(應用於電子裝置上)的示意圖。本實施例的各種細節(例如天線單元10的結構等)與圖1實施例大致相同，故以下僅針對差異進行說明。本實施例與圖1實施例的差異在於，圖1實施例的第一天線群組50及第二天線群組60之間具有較大間距，而本實施例的第一天線群組50及第二天線群組60之間的間距可較小，在本實施例中，第一天線群組50及第二天線群組60之間的間距(第一間距d1)最小相等於固定間距d3，換言之，本實施例的第一間距d1至少等於固定間距d3，並且本實施例的第一間距d1小於圖1實施例的第一間距d1(例如本實施例的第一間距d1至多為圖1實施例的第一間距d1的一半，甚至更小)。此外，在本實施例中，第一天線群組50及第二天現群組60皆鄰近第一側邊3b及第二側邊3c的其中一者，並遠離另一者。In addition, the first antenna group 50 and the second antenna group 60 of the present invention may also have different configurations. FIG. 10 is a schematic diagram of a second type of miniature dual-band antenna system 1 (applied to an electronic device) of the present invention. Various details (such as the structure of the antenna unit 10 , etc.) in this embodiment are substantially the same as those in the embodiment in FIG. 1 , so only the differences will be described below. The difference between this embodiment and the embodiment of FIG. 1 is that the first antenna group 50 and the second antenna group 60 in the embodiment of FIG. 1 have a relatively large distance, while the first antenna group of this embodiment The distance between the first antenna group 50 and the second antenna group 60 can be relatively small. In this embodiment, the distance between the first antenna group 50 and the second antenna group 60 (the first distance d1) equal to the fixed distance d3, in other words, the first distance d1 of this embodiment is at least equal to the fixed distance d3, and the first distance d1 of this embodiment is smaller than the first distance d1 of the embodiment of FIG. 1 (for example, the first distance d1 of this embodiment At most, it is half of the first distance d1 in the embodiment of FIG. 1 , or even smaller). In addition, in this embodiment, the first antenna group 50 and the second antenna group 60 are both adjacent to one of the first side 3b and the second side 3c, and away from the other.

圖11是本發明另一實施例的微型雙頻帶天線系統1(第二型態)的反射係數之實驗結果圖。如圖11所示，每個天線單元10在5G傳輸所需的操作頻段皆具備低於-6dB的反射係數，因此每個天線單元10皆可產生兩個適用5G傳輸的共振模態。FIG. 11 is a graph showing experimental results of the reflection coefficient of the miniature dual-band antenna system 1 (the second type) according to another embodiment of the present invention. As shown in FIG. 11 , each antenna unit 10 has a reflection coefficient lower than -6 dB in the operating frequency band required for 5G transmission, so each antenna unit 10 can generate two resonance modes suitable for 5G transmission.

圖12是本發明另一實施例的微型雙頻帶天線系統1(第二型態)的傳輸係數實驗結果圖。如圖12所示，相鄰的天線單元10之間的傳輸係數皆小於-10dB，亦即，各天線單元10之間具備良好的隔離度。FIG. 12 is a graph showing the experimental result of the transmission coefficient of the miniature dual-band antenna system 1 (the second type) according to another embodiment of the present invention. As shown in FIG. 12 , the transmission coefficients between adjacent antenna units 10 are all less than -10 dB, that is, each antenna unit 10 has good isolation.

圖13是本發明另一實施例的微型雙頻帶天線系統1(第二型態)的封包係數實驗結果圖。如圖13所示，相鄰的天線單元10之間的封包係數皆小於0.5，亦即，各天線單元10之間的通道獨立性皆能符合業界需求。FIG. 13 is a graph showing the experimental results of the packing coefficient of the miniature dual-band antenna system 1 (the second type) according to another embodiment of the present invention. As shown in FIG. 13 , the packing coefficients between the adjacent antenna units 10 are all less than 0.5, that is, the channel independence between the antenna units 10 can meet the requirements of the industry.

圖14是本發明另一實施例的微型雙頻帶天線系統1(第二型態)的天線效率實驗結果圖。如圖14所示，每個天線單元10在5G傳輸所需的操作頻段皆具備高於35%的天線效率，因此能符合業界的需求。FIG. 14 is a graph showing the experimental results of the antenna efficiency of the miniature dual-band antenna system 1 (the second type) according to another embodiment of the present invention. As shown in FIG. 14 , each antenna unit 10 has an antenna efficiency higher than 35% in the operating frequency band required for 5G transmission, thus meeting the requirements of the industry.

此外，本發明的天線單元10的結構亦可具備不同實施例。圖15是本發明另一實施例的天線單元10的結構示意圖。本實施例的各種細節與圖2實施例大致相同，故以下僅針對差異進行說明。本實施例與圖2實施例的差異在於，本實施例的饋入部12與外圍延伸部131之間不具備間距，饋入部12連接外圍延伸部131，且饋入部12包含一電子元件123，其中該電子元件123的一電性數值關聯於第一共振模態及第二共振模態。In addition, the structure of the antenna unit 10 of the present invention can also have different embodiments. FIG. 15 is a schematic structural diagram of an antenna unit 10 according to another embodiment of the present invention. Various details of this embodiment are substantially the same as those of the embodiment in FIG. 2 , so only the differences will be described below. The difference between this embodiment and the embodiment of FIG. 2 is that there is no space between the feeding portion 12 and the peripheral extending portion 131 in this embodiment, the feeding portion 12 is connected to the peripheral extending portion 131 , and the feeding portion 12 includes an electronic component 123 , wherein An electrical value of the electronic element 123 is associated with the first resonance mode and the second resonance mode.

電子元件123可例如是各種被動元件，例如但不限於為晶片電容、晶片電感、晶片電阻等，而電性數值亦隨著被動元件的類型而改變，例如晶片電容的電性數值為電容值，晶片電阻的電性數值為電阻值等，本發明不限於此；為方便說明，下文皆以晶片電容來舉例說明。在一實施例中，當晶片電容的電容值越大時，第一共振模態及第二共振模態的中心頻率亦會變低。在一實施例中，當第一共振模態及第二共振模態為5G的操作模態時，晶片電容所對應的電容值大約為0.2 pF皮法拉(picofarad，pF)，但不限於此。因此，晶片電容的設置可取代其它實施例所需的耦合距離(g1)。需注意的是，上述電子元件123的態樣僅是舉例而非限定。The electronic components 123 can be, for example, various passive components, such as but not limited to chip capacitors, chip inductors, chip resistors, etc., and the electrical values also vary with the types of passive components. For example, the electrical values of chip capacitors are capacitance values. The electrical value of the chip resistor is the resistance value, etc., and the present invention is not limited thereto; for the convenience of description, the chip capacitor is used as an example in the following description. In one embodiment, when the capacitance value of the chip capacitor is larger, the center frequencies of the first resonance mode and the second resonance mode also become lower. In one embodiment, when the first resonance mode and the second resonance mode are operating modes of 5G, the capacitance value corresponding to the chip capacitance is about 0.2 pF picofarad (pF), but not limited thereto. Therefore, the setting of the chip capacitance can replace the coupling distance (g1) required by other embodiments. It should be noted that the above-mentioned aspects of the electronic components 123 are only examples and not limitations.

藉此，本發明提供了一種微型雙頻帶天線系統1的多種實施態樣，其天線單元10不僅體積小可適用於窄邊框設計的電子裝置上，亦可符合5G傳輸所需的需求，並且天線單元10之間能具備良好的隔離度，進而達成現有產品所無法提供的功效。此外，本文中的實施例僅係為了方便說明而舉例而已，本發明所主張之權利範圍自應以申請專利範圍所述為準，而非僅限於該等實施例。Thereby, the present invention provides various implementation aspects of a miniature dual-band antenna system 1. The antenna unit 10 is not only small and can be applied to electronic devices with narrow frame design, but also meets the requirements of 5G transmission. The units 10 can have a good degree of isolation, thereby achieving functions that cannot be provided by existing products. In addition, the embodiments herein are only examples for the convenience of description, and the scope of the claims claimed in the present invention should be based on the scope of the patent application, rather than being limited to these embodiments.

1:微型雙頻帶天線系統 2:電子裝置                     3:接地面                         4:鍵盤                             10、Ant1~Ant8:天線單元                     11:基板                             12:饋入部                  121:饋入端                       122:饋入部頂部                 13:迴圈結構                     131:外圍延伸部                 132:第一短路部                 133:第一延伸部                 134:第二延伸部                 135:第二短路部                 136:第三延伸部                 137:第四延伸部                 50:第一天線群組             60:第二天線群組             3a:長邊                             3b:第一側邊                     3c:第二側邊                     d1:第一間距                     d2:第二間距                     d3:第三間距                     d4:第四間距                     L1:第一長度                     L2:第二長度                     L3:第三長度                     L4:第四長度                     L5:第五長度                     L6:第六長度                     L7:第七長度                     L8:第八長度                     L9:第九長度                     L10:第十長度                     W1:第一寬度                     W2:第二寬度                     W3:第三寬度                     W4:第四寬度                     W5:第五寬度                     W6:第六寬度                     W7:第七寬度                     W8:第八寬度                     W9:第九寬度                     W10:第十寬度                     D1:第一短路點                 D2:第二短路點                 g1:耦合距離                     A:電流饋入點                 Y:第一方向                     Z:第二方向                     X:第三方向                     123:電子元件                                      1: Miniature Dual Band Antenna System 2: Electronic devices 3: Ground plane 4: keyboard 10. Ant1~Ant8: antenna unit 11: Substrate 12: Feeding section 121: Feeding end 122: Feed-in top 13: Loop structure 131: Peripheral extension 132: The first short circuit part 133: The first extension 134: The second extension 135: Second short circuit part 136: The third extension 137: Fourth extension 50: The first antenna group 60: The second antenna group 3a: long side 3b: first side 3c: second side d1: the first spacing d2: the second distance d3: the third spacing d4: the fourth spacing L1: the first length L2: the second length L3: the third length L4: Fourth length L5: fifth length L6: sixth length L7: seventh length L8: Eighth length L9: ninth length L10: tenth length W1: first width W2: second width W3: third width W4: Fourth width W5: fifth width W6: sixth width W7: seventh width W8: Eighth width W9: ninth width W10: tenth width D1: The first short-circuit point D2: The second short-circuit point g1: coupling distance A: Current feed point Y: the first direction Z: the second direction X: third direction 123: Electronic components    

圖1是本發明第一型態的微型雙頻帶天線系統應用於電子裝置上之示意圖。FIG. 1 is a schematic diagram of the application of the miniature dual-band antenna system of the first aspect of the present invention to an electronic device.

圖2是本發明一實施例的天線單元的結構示意圖。FIG. 2 is a schematic structural diagram of an antenna unit according to an embodiment of the present invention.

圖3是本發明一實施例的天線單元的結構尺寸示意圖。FIG. 3 is a schematic diagram of the structure and dimensions of an antenna unit according to an embodiment of the present invention.

圖4是本發明一實施例的微型雙頻帶天線系統的反射係數的實驗結果圖。FIG. 4 is a graph showing experimental results of reflection coefficients of a miniature dual-band antenna system according to an embodiment of the present invention.

圖5(A)是本發明一實施例的微型雙頻帶天線系統的傳輸係數的第一實驗結果圖。FIG. 5(A) is a first experimental result diagram of the transmission coefficient of the miniature dual-band antenna system according to an embodiment of the present invention.

圖5(B)是本發明一實施例的微型雙頻帶天線系統的傳輸係數的第二實驗結果圖。FIG. 5(B) is a second experimental result diagram of the transmission coefficient of the miniature dual-band antenna system according to an embodiment of the present invention.

圖6(A)是本發明一實施例的微型雙頻帶天線系統的封包係數的第一實驗結果圖。FIG. 6(A) is a first experimental result diagram of the packing coefficient of the miniature dual-band antenna system according to an embodiment of the present invention.

圖6(B)是本發明一實施例的微型雙頻帶天線系統的封包係數的第二實驗結果圖。FIG. 6(B) is a second experimental result diagram of the packing coefficient of the miniature dual-band antenna system according to an embodiment of the present invention.

圖7是本發明一實施例的微型雙頻帶天線系的天線效率的實驗結果圖。FIG. 7 is a graph showing experimental results of the antenna efficiency of the miniature dual-band antenna system according to an embodiment of the present invention.

圖8是本發明一實施例的天線單元的第一參數對應反射係數的實驗結果圖。FIG. 8 is an experimental result diagram of the reflection coefficient corresponding to the first parameter of the antenna unit according to an embodiment of the present invention.

圖9是本發明一實施例的天線單元的第二參數對應反射係數的實驗結果圖。FIG. 9 is an experimental result diagram of the reflection coefficient corresponding to the second parameter of the antenna unit according to an embodiment of the present invention.

圖10是本發明第二型態的微型雙頻帶天線系統應用於電子裝置上的示意圖。FIG. 10 is a schematic diagram of the application of the miniature dual-band antenna system of the second aspect of the present invention to an electronic device.

圖11是本發明另一實施例的微型雙頻帶天線系統的反射係數實驗結果圖。FIG. 11 is a graph showing the experimental result of the reflection coefficient of the miniature dual-band antenna system according to another embodiment of the present invention.

圖12是本發明另一實施例的微型雙頻帶天線系統的傳輸係數實驗結果圖。FIG. 12 is a graph showing the experimental result of the transmission coefficient of the miniature dual-band antenna system according to another embodiment of the present invention.

圖13是本發明另一實施例的微型雙頻帶天線系統的封包係數實驗結果圖。FIG. 13 is a graph showing the experimental results of the packing coefficient of the miniature dual-band antenna system according to another embodiment of the present invention.

圖14是本發明另一實施例的微型雙頻帶天線系統的天線效率實驗結果圖。FIG. 14 is a graph showing the experimental results of the antenna efficiency of the miniature dual-band antenna system according to another embodiment of the present invention.

圖15是本發明另一實施例的天線單元的結構示意圖。FIG. 15 is a schematic structural diagram of an antenna unit according to another embodiment of the present invention.

1:微型雙頻帶天線系統1: Miniature Dual Band Antenna System

2:電子裝置2: Electronic device

3:接地面3: Ground plane

4:鍵盤4: Keyboard

10、Ant1~Ant4:天線單元10. Ant1~Ant4: Antenna unit

50:第一天線群組50: The first antenna group

60:第二天線群組60: The second antenna group

3a:長邊3a: Long side

3b:第一側邊3b: First side

3c:第二側邊3c: Second side

d1:第一間距d1: first spacing

d2:第二間距d2: second spacing

d3:第三間距d3: the third distance

W1:第一寬度W1: first width

Claims (10)

一種微型雙頻帶天線系統(1)，應用於一電子裝置(2)上，包含： 複數個天線單元(10)，各自連接一接地面(3)，並沿著一第一方向(Y)延伸排列，其中每個天線單元(10)包含： 一基板(11)； 一饋入部(12)，設置於該基板(11)上；以及 一迴圈結構(13)，設置於該基板(11)上，並包圍該饋入部(12)，其中該迴圈結構(13)包含沿著該第一方向(Y)延伸的一外圍延伸部(131)； 其中，該外圍延伸部(131)與饋入部(12)之間具備一耦合距離(g1)，且該耦合距離(g1)關聯於該等天線單元(10)的一第一共振模態及一第二共振模態，或者該饋入部(12)連接該外圍延伸部(131)，並包含一電子元件(123)，且該電子元件(123)的一電性數值關聯於該第一共振模態及該第二共振模態。A miniature dual-band antenna system (1), applied to an electronic device (2), comprising: A plurality of antenna units (10), each connected to a ground plane (3), and extending along a first direction (Y), wherein each antenna unit (10) includes: a base plate (11); a feeding portion (12) disposed on the substrate (11); and A loop structure (13) is disposed on the substrate (11) and surrounds the feeding portion (12), wherein the loop structure (13) includes a peripheral extension portion extending along the first direction (Y) (131); Wherein, there is a coupling distance (g1) between the peripheral extension portion (131) and the feeding portion (12), and the coupling distance (g1) is associated with a first resonance mode and a first resonance mode of the antenna units (10). The second resonance mode, or the feeding portion (12) is connected to the peripheral extension portion (131), and includes an electronic element (123), and an electrical value of the electronic element (123) is associated with the first resonance mode state and the second resonance mode. 如請求項1所述的微型雙頻帶天線系統(1)，其中該第一共振模態對應第五代行動通訊技術(fifth generation mobile networks，5G)的一低頻操作模態，該第二共振模態對應5G的一高頻操作模態。The miniature dual-band antenna system (1) according to claim 1, wherein the first resonance mode corresponds to a low-frequency operation mode of fifth generation mobile networks (5G), and the second resonance mode corresponds to a low frequency operation mode of fifth generation mobile networks (5G). The state corresponds to a high frequency operation mode of 5G. 如請求項2所述的微型雙頻帶天線系統(1)，其中該耦合距離(g1)小於或等於該第一共振模態所能涵蓋的最小頻率所對應的波長的0.011倍。The miniature dual-band antenna system (1) according to claim 2, wherein the coupling distance (g1) is less than or equal to 0.011 times the wavelength corresponding to the minimum frequency that can be covered by the first resonance mode. 如請求項2所述的微型雙頻帶天線系統(1)，其中該外圍延伸部(131)的一長度(L2)關聯於該第一共振模態及該第二共振模態，其中該長度(L2)小於或等於該第一共振模態所能涵蓋的最小頻率所對應的波長的0.33倍，且每個天線單元(10)自該接地面(3)沿著一第二方向(Z)延伸出的一高度(W1)小於或等於該第一共振模態所能涵蓋的最小頻率所對應的波長的0.055倍，其中該第一方向(Y)不同於該第二方向(Z)。The miniature dual-band antenna system (1) as claimed in claim 2, wherein a length (L2) of the peripheral extension (131) is associated with the first resonance mode and the second resonance mode, wherein the length ( L2) is less than or equal to 0.33 times the wavelength corresponding to the minimum frequency covered by the first resonance mode, and each antenna element (10) extends from the ground plane (3) along a second direction (Z) The resulting height (W1) is less than or equal to 0.055 times the wavelength corresponding to the minimum frequency covered by the first resonance mode, wherein the first direction (Y) is different from the second direction (Z). 如請求項2所述的微型雙頻帶天線系統(1)，其中該迴圈結構(13)更包含連接該接地面(3)並沿著一第二方向(Z)延伸的一第一短路部(132)、連接該第一短路部(132)並逆著該第一方向(Y)延伸的一第一延伸部(133)、連接該第一延伸部(133)及該外圍延伸部(131)並沿著該第二方向(Z)延伸的一第二延伸部(134)、連接該接地面(3)並沿著該第二方向(Z)延伸的一第二短路部(135)、連接該第二短路部(135)並沿著該第一方向(Y)延伸的一第三延伸部(136)以及連接該第三延伸部(136)及該外圍延伸部(131)並沿著該第二方向(Z)延伸的一第四延伸部(137)，其中該第二方向(Z)不同於該第一方向(Y)。The miniature dual-band antenna system (1) according to claim 2, wherein the loop structure (13) further comprises a first short-circuit part connected to the ground plane (3) and extending along a second direction (Z) (132), a first extension portion (133) connecting the first short-circuit portion (132) and extending against the first direction (Y), connecting the first extension portion (133) and the peripheral extension portion (131) ) and a second extension portion (134) extending along the second direction (Z), a second short-circuit portion (135) connecting the ground plane (3) and extending along the second direction (Z), A third extension portion (136) connecting the second short-circuit portion (135) and extending along the first direction (Y) and connecting the third extension portion (136) and the peripheral extension portion (131) and extending along the first direction (Y) A fourth extension (137) extending in the second direction (Z), wherein the second direction (Z) is different from the first direction (Y). 如請求項5所述的微型雙頻帶天線系統(1)，其中該饋入部(12)是一T型饋入部或類T型饋入部，並包含一饋入端(121)以及連接該饋入端(121)的一饋入部頂部(122)，其中該饋入部頂部(122)與該外圍延伸部(131)之間具備該耦合距離(g1)。The miniature dual-band antenna system (1) according to claim 5, wherein the feeding part (12) is a T-shaped feeding part or a T-like feeding part, and comprises a feeding end (121) and is connected to the feeding A feeding portion top (122) of the end (121), wherein the coupling distance (g1) is provided between the feeding portion top (122) and the peripheral extension portion (131). 如請求項2所述的微型雙頻帶天線系統(1)，其中至少二天線單元(10)以一固定間距(d3)間隔排列以組成一第一天線群組(50)，其中該固定間距(d3)小於或等於該第一共振模態所能涵蓋的最小頻率所對應的波長的0.055倍。The miniature dual-band antenna system (1) according to claim 2, wherein at least two antenna elements (10) are arranged at intervals with a fixed distance (d3) to form a first antenna group (50), wherein the fixed distance (d3) is less than or equal to 0.055 times the wavelength corresponding to the minimum frequency that the first resonance mode can cover. 如請求項7所述的微型雙頻帶天線系統(1)，其中該第一天線群組(50)以外的至少二天線單元(10)以該固定間距(d3)間隔排列以組成一第二天線群組(60)，其中該第一天線群組設置於鄰近該接地面的一第一側邊，該第二天線群組設置於鄰近於該接地面的一第二側邊，其中該接地面為該電子裝置的一螢幕接地面，且該第一側邊與第二側邊為相對設置。The miniature dual-band antenna system (1) according to claim 7, wherein at least two antenna units (10) other than the first antenna group (50) are arranged at intervals of the fixed distance (d3) to form a second An antenna group (60), wherein the first antenna group is disposed on a first side adjacent to the ground plane, and the second antenna group is disposed on a second side adjacent to the ground plane, Wherein the ground plane is a screen ground plane of the electronic device, and the first side and the second side are disposed opposite to each other. 如請求項8所述的微型雙頻帶天線系統(1)，其中該第一天線群組(50)以外的至少二天線單元(10)以該固定間距(d3)間隔排列以組成一第二天線群組(60)，其中該第一天線群組(50)與該第二天線群組(60)之間具有一間距(d1)，其中該間距(d1)最小相等於該固定間距(d3)。The miniature dual-band antenna system (1) according to claim 8, wherein at least two antenna units (10) other than the first antenna group (50) are arranged at intervals of the fixed distance (d3) to form a second Antenna group (60), wherein there is a distance (d1) between the first antenna group (50) and the second antenna group (60), wherein the distance (d1) is at least equal to the fixed Spacing (d3). 如請求項1所述的微型雙頻帶天線系統(1)，其中該電子元件(123)包含一晶片電容，且該電性數值為一電容值。The miniature dual-band antenna system (1) according to claim 1, wherein the electronic component (123) comprises a chip capacitor, and the electrical value is a capacitance value.

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