201044694 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種天線結構，尤指一種可涵蓋兩種無線 區域網路頻段的雙頻天線結構。 【先前技術】 天線為眾多無線通訊設備產品中不可或缺之元件，亦 為通訊產品能否有政地接收二中電波之主要構成要件。隨 著無線通訊設備與消費性電子產品曰趨多元，對天線設士十 的要求亦愈加嚴苛，一方面必須配合無線產品造型設計並 兼顧接收/發射效能，一方面則要滿足各種無線通訊技術 的電磁波特性，讓天線技術不斷朝寬頻化與微型化方向邁 進0 無線通訊技術的蓬勃發展，市場對於天線的需长量 急速提升，現階段手機、筆記型電腦、全球衛星定^系 數位電視、多重輸入多重輸出（ΜΙΜΟ)等應用，都須仰幸天 線來發射與接收訊號。天線為無線通訊設備與外界溝通的 必備元件，負責無線訊號的發送與接收，由於位於射 統的第一線，因此天線對於訊號接收品質的好壞，'對整體 無線通訊系統的運作效能影響甚鉅。而隨著終端用戶=於 商品造型、省電，以及傳輸速度與範圍的要求日益婵力； 且不同應用領域對於天線特性的要求亦不盡相同皿相曰°佶 得天線的設计面臨更嚴苛的技術挑戰。 傳統無線區域網路或8〇2.11a/b/g/n橋接點天線 為雙頻橋接點天線結構，特別是多輸入多輸出天線系矣夕 這類型天線系統通常為單頻2. 4-GHz或雙纟f ' 9 ^ ^ 2. 4-GHz Ο Ο 第-接地單开兮哲天線體’其包括一第一輻射單元及- 型於該基板的门；輕射單元及該第一接地單元分別成 基板的R—表面或相異表面上；以及-第二天線 201044694 /5-GHz天線組成，此一雙頻偶極天線因只有單一饋入，應 =於雙頻或同步㈣路由科，卜在電路巾增加一ς f電路或雙工器電路，用以將兩個不同頻段的訊號分離， :曰力口此電路，使得產品成本增力口，更進而影響天 本身的特性，造成頻寬降低、增益與效率降低等。、201044694 VI. Description of the Invention: [Technical Field] The present invention relates to an antenna structure, and more particularly to a dual-frequency antenna structure that can cover two wireless local area network bands. [Prior Art] Antennas are indispensable components of many wireless communication equipment products, and are also the main components of communication products that can receive the second wave. With the increasing diversity of wireless communication devices and consumer electronics products, the requirements for antennas are becoming more stringent. On the one hand, it must be designed in conjunction with wireless product design and take into account the receiving/transmitting performance. On the one hand, it must satisfy various wireless communication technologies. The electromagnetic wave characteristics make the antenna technology continue to move toward the direction of broadband and miniaturization. 0 The wireless communication technology is booming. The demand for antennas is rapidly increasing. At this stage, mobile phones, notebook computers, global satellites, and TVs. Applications such as multiple input multiple output (ΜΙΜΟ) must rely on the antenna to transmit and receive signals. The antenna is an indispensable component for communication between the wireless communication device and the outside world. It is responsible for the transmission and reception of the wireless signal. Because it is located in the first line of the radio system, the quality of the signal received by the antenna is good, and it affects the operation efficiency of the overall wireless communication system. huge. And with the end user = in the shape of the product, power saving, and the speed and range of transmission requirements are increasingly strong; and different application areas for the characteristics of the antenna are not the same as the same phase of the design of the antenna is more strict Harsh technical challenges. The traditional wireless local area network or the 8〇2.11a/b/g/n bridge antenna is a dual-frequency bridge antenna structure, especially the multi-input multi-output antenna system. This type of antenna system is usually a single frequency 2. 4-GHz Or a double 纟f ' 9 ^ ^ 2. 4-GHz Ο Ο a first-ground single-opening antenna body comprising a first radiating element and a gate shaped on the substrate; a light projecting unit and the first grounding unit Separately formed on the R-surface or dissimilar surface of the substrate; and - the second antenna 201044694 /5-GHz antenna. This dual-frequency dipole antenna should be single-input, should be = in dual-frequency or synchronous (four) routing In the circuit towel, add a circuit or duplexer circuit to separate the signals of two different frequency bands. This circuit makes the product cost increase, which in turn affects the characteristics of the sky itself. Reduced bandwidth, reduced gain and efficiency, etc. ,
^十要解决上述雙頻橋接點天線系統使用不便、需額外辦 ==/題，如先前專利125测及先^國C =饋^統，可輕鬆地應用於雙頻或同步雙頻的產品中， 無須領外加增任何雷路^ 咏 揮天線的最佳特性。秋而上：:】、產品成本，亦可發 際應用上，都需一A 相關技術之天線結構在實 而七大面積的接地面，將兩天線共用一接地 或額外用一塑膠基底支撐天 與複雜度，且因需要一大垃从品广大踝的h成本 有較大的體穑尺+接 得此一類型的天線具 訊產品。_ 、寸，而無法廣泛應用於各種不同的無線通 計合::有人有感上述缺失之可改善’提出-種設 有效改善上述缺失之本發明。 【發明内容】 且赞之主要目的’在於提供一種體積小、結構簡單 且製造成本低的雙饋入天線。 傅間早 包括為了if上ί目的’本發明提供—種雙饋人天線，1 -第二表面，· 一證土第；表面及與該第-表面相對的 5 201044694 體其包括帛二輕射單元及一第二接地單元^Ten to solve the above-mentioned dual-frequency bridge contact antenna system is inconvenient to use, need to do additional == / questions, such as the previous patent 125 test and the first country C = feed system, can be easily applied to dual-frequency or synchronous dual-band products In the middle, there is no need to add any lightning path to ^ the best characteristics of the antenna. Autumn up::], product cost, but also for hairline applications, all need an A related technology antenna structure in the real seven areas of the grounding surface, the two antennas share a grounding or additional support with a plastic substrate With the complexity, and because of the need for a large amount of waste from the vast cost of the product, there is a larger body size + access to this type of antenna. _, inch, and can not be widely used in a variety of different wireless communication:: Some people feel that the above-mentioned missing can be improved 'proposed-species to effectively improve the above described invention. SUMMARY OF THE INVENTION The main purpose of the present invention is to provide a dual feed antenna that is small in size, simple in structure, and low in manufacturing cost. Fu has long been included for the purpose of the invention, a double-fed antenna, 1 - second surface, · a soil; the surface and the surface opposite the first surface 201044694 body including the second light shot Unit and a second grounding unit
STS二接地單元分別成型於該基板的第2 和第一表面上，該第二接地單it與該第—接地J ϊ體ί:第2:輻:=包?-第，體’該㈡ ;;面’該第二子接地面為-第二凹槽，二1二子 第二凹槽側臂，該第-子接地面二: 接地面在该第二凹槽底部交又 第一子 稱地分佈於該第—子接地面的兩側；該槽側臂對 向與第二凹槽的開口 x第凹槽的開口方 至該第二凹槽側臂的距離：等:一選的」-凹槽側臂 之—波長。 、預疋向頻頻段的二分 距離定義為該^ 弟一凹槽側臂之自由端的垂直 ς:，臂之自由端的垂直長距;以 ί長度’該第一長度約等於⑵ 孤形槽為υ形凹槽4形凹槽、直角_凹槽或 弧形凹1 了凹槽為υ形凹槽、y形凹槽、直角_凹槽或 圓形或橢圓形，其书 預定高頻頻段的二分 邊、直？妾地面為-長方形 之一波^我錄的尺寸大於或等於 該第二辕射單元還包括與該第，射體相連接的 201044694 輸：，該微帶傳輸線遠離該第二輕射體的一端設置 點，該第一子接地面靠近該第二饋入點的-糕3又置有—第二接地點。 度略單元包括一第-輻射體，該第-輻射體長 ;預疋低頻頻段的四分之—波長。 -表Ϊ第;』畐射:：蜿蜒曲折的方式設置在該基板的第 -第-饋ίΓίΓ靠近該第—接地單元的-端設置有 Ο Ο 丄口 :範r點不落入該第-接地單元在基 該第一輻射單元還包括一短 接該第:輕射體及該第—接地單元、、、呈倒L形’連 該第一接地單元句衽一 點，該第-接地面為一長转弟= 妾地面及-第-接地 近該第一 ί射= 接地點設置於該第一接地面靠 生一二:^二:3的效果:該雙饋入天線可同時產 點，因而不需要1天頻帶’更因為雙饋入的特 天線特性的降低，同時;滿故可避免 入天線的電學特性。再者，該雙饋 體積具有微小化的特』，使本線的接地面，故整體 於無線產品的认天較可廣泛的應用 具有模組化的特線結構簡單而 本。 1私進而降低天線製作的成 7 201044694 閱以進一步瞭解本發明之特徵及技術内容，請參 :::=明之詳細說明與附圖，然而所附圖式僅提 【實施方式】 有 木閱ί 1圖’包括第1圖3部分和第"b部分， -二:實施例提供一種雙饋入天線100，其包括 長條形的基板H)，—第―天線體2 3。。其中該基板10具有一第一表㈣以上= ⑴该第-天線體2G形成於該基板1〇的第—表们^ ^二天線體％則形成於該基板1G的第—表面η與第二 天：二Τ ί 1圖a部分係表達第一天線體20以及第二 線體之科70件（即後述的第二接地單元32)在其 ^1〇之第-表面u上的分佈情況，第i圖b部分係表ς 第一天線體3G的部分元件（即後述的第二_單元3lf 二表面12上之分佈情況。第-天線體μ ίϊπ = 21以及—第—接地單元22,該第― j早凡21和第—接地單S 22均形成於該基板10的第 一表面11上，且第一天線體20分佈於該基板1〇的第二 表面12之上半部。該第二天線體30包括一第二輻射單= 31严及一第二接地單元32,其中該第二輻射單元31形 於該基板10的第二表面12之下半部，該第二接地單元 則對應該第二輻射單元31而形成於該基板ig的第一表面 11之下半邠，且δ亥第二接地單元32鄰近於該第一 元22，ίί第二接地單元32、該第一接地單元22以及該第 ^輻射單元21係沿基板1〇之長度方向由下而上依^排 201044694 如第1圖a部分所示，該第一輕射單元21進一步包 括一第一輻射體2H，一短路細片212以及一第一饋入點 213,該第一接地單元22進一步包括—第一接地面221以 ，第一接地點222，而該第一饋入點213不落入該第一 單元22在基板1〇上所覆蓋或投影的範圍。該第-輻 射，2U以婉蜒曲折的方式設置在該基板1〇的一端，該 二：田片212呈L形’連接該第一輻射體211與該第-接 ❹ Ο 间：】2上。該第一天線體2〇更包括-同軸傳輸線23，該 車，輪線23_該第—_單元21與該第—接地單元 =具體的實_中’該同軸傳輸線23具有—中心導 性連接於該第一 =2:’而糊接地導體232則電 =合第/圖a部分及第】圖b部分，該第二輻射單元 饋二輕射體311、-微帶傳輸線312以及一第二 接地單元32包括-第-子接地面 天# 22以及—第二接地點323。該第二 傳輪心=====的f施例中，該同轴 其中該中心導體如電及第—外/接地導體332， 外層接地導體332則===二點313,而該 ^唾A %也〖生連接於s亥弟二接地點323。 料二射體311為一第一 凹槽開;朝上(即朝向該第一‘ “:、二 ：_ —及-對第-凹槽側臂 人凹曰底部311a至該第—凹槽側臂311b的自 9 201044694 由端的垂直距離定義為該第二輻 表示。該微帶傳輸線312從該^ =的長度，用hl 遠離該第-天線體20的方向f I槽底部311a向下（即 端，該第二饋入點313設置在:指基板10的另-第一凹槽底冑3lla的一端上微▼傳輪線312之遠離該 邊第二子接地面322為一笼_ ^The STS two grounding units are respectively formed on the second and first surfaces of the substrate, the second grounding unit it and the first grounding J ϊ body: 2: spokes: = package? - body, the body (the second); The second sub-ground surface is a second recess, the second and second sub-groove side arms, the first sub-ground plane 2: the ground plane is at the bottom of the second recess and the first sub-ground Distributed on both sides of the first sub-ground plane; the side arm of the slot opposes the opening of the second recess x the distance from the opening of the first recess to the side arm of the second recess: etc.: The side arm of the groove - the wavelength. The two-way distance of the pre-frequency band is defined as the vertical ς of the free end of the side arm of the groove: the vertical length of the free end of the arm; the length of the ί length 'the first length is approximately equal to (2) the orphan groove is υ Grooved 4-shaped groove, right-angled groove or curved concave 1 The groove is a υ-shaped groove, a y-shaped groove, a right-angle _ groove or a circular or elliptical shape, and the book is divided into two points of a predetermined high frequency band. Side, straight?妾The ground is a rectangular wave. The size of the record is greater than or equal to the second radiation unit. The second radiation unit further includes a 201044694 transmission connected to the first and the radiation body. The microstrip transmission line is away from the end of the second light projecting body. The set point, the first sub-ground surface is adjacent to the second feed point, and the cake 3 is further provided with a second ground point. The unit of light includes a first-radiator, the length of the first-radiator, and a quarter-wavelength of the low-frequency band. - Ϊ Ϊ; 畐 : :: 蜿蜒 的 设置 设置 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 该 : : : : : : : : : : : : : : : : : : - the grounding unit further comprises a shorting of the first: light projecting body and the first grounding unit, and an inverted L-shaped connection to the first grounding unit, the first grounding surface For a long turn brother = 妾 ground and - first - ground close to the first ί = the grounding point is set on the first ground plane by one or two: ^ 2: 3 effect: the double feed antenna can simultaneously produce points Therefore, the 1-day band is not required, and the characteristics of the special antenna due to double feed are reduced. At the same time, the electrical characteristics of the antenna can be avoided. Furthermore, the doubly-fed volume has a miniaturized feature, which makes the ground plane of the line, so that the overall wireless product can be widely used, and the modular special line structure is simple. 1 Private and then reduce the production of the antenna 7 201044694 For a better understanding of the features and technical contents of the present invention, please refer to:::=Detailed description and drawings, however, the drawings only refer to the [embodiment] 1A' includes a portion of FIG. 1 and a portion "b portion, and a second embodiment provides a dual feed antenna 100 comprising an elongated substrate H), an antenna body 23. . The substrate 10 has a first table (four) or more = (1) the first antenna body 2G is formed on the substrate 1〇, and the second antenna body % is formed on the first surface η and the second surface of the substrate 1G. Day: Τ ί 1 Figure a shows the distribution of the first antenna body 20 and the second line body 70 (ie, the second ground unit 32 described later) on the first surface u of the ^1〇 The i-th part b is a part of the first antenna body 3G (that is, the distribution on the second surface 12 of the second_unit 3lf to be described later. The first antenna body μ ϊ π = 21 and the - ground unit 22 The first antenna 21 and the ground plane S 22 are both formed on the first surface 11 of the substrate 10, and the first antenna body 20 is distributed on the upper half of the second surface 12 of the substrate 1 The second antenna body 30 includes a second radiation unit 31 and a second ground unit 32, wherein the second radiation unit 31 is formed on the lower half of the second surface 12 of the substrate 10, the second The grounding unit is formed under the first surface 11 of the substrate ig corresponding to the second radiating unit 31, and the second grounding unit 32 is adjacent to the first element 22, The second grounding unit 32, the first grounding unit 22, and the first radiating unit 21 are arranged along the length direction of the substrate 1 from bottom to top 201044694 as shown in part 1 of the first drawing, the first light shot The unit 21 further includes a first radiator 2H, a shorting chip 212 and a first feeding point 213. The first grounding unit 22 further includes a first grounding surface 221 and a first grounding point 222. A feed point 213 does not fall within a range covered or projected by the first unit 22 on the substrate 1. The first radiation, 2U is disposed in a meandering manner at one end of the substrate 1 ,, the second: The sheet 212 is connected in an L-shape to the first radiator 211 and the first interface: 2, the first antenna body 2 further includes a coaxial transmission line 23, the vehicle, the wheel 23_ - the unit 21 and the first - ground unit = specific real - middle 'the coaxial transmission line 23 has - the center is connected to the first = 2: ' and the paste ground conductor 232 is electrically = combined / part a and In the figure b, the second radiating element feeds the two light emitters 311, the microstrip transmission line 312, and a second grounding unit 32 including - Grounding surface #22 and - second grounding point 323. In the embodiment of the second transmitting core =====, the coaxial center of the central conductor such as the electrical and the first outer/ground conductor 332, the outer layer is grounded The conductor 332 is === two points 313, and the ^Sag A% is also connected to the shaidi two grounding point 323. The material emitter 311 is a first groove open; upwards (ie toward the first ':, two: _ - and - the vertical distance from the end of the first-groove side arm recessed bottom 311a to the first-groove side arm 311b from 9 201044694 is defined as the second spoke. The microstrip transmission line 312 is from the length of the ^=, hl away from the direction of the first antenna body 20, and the bottom 311a of the slot is downward (ie, the end, the second feed point 313 is disposed at: the other of the substrate 10 One end of the first groove bottom 胄 3lla is slightly moved from the side of the second sub-ground surface 322 to a cage _ ^
形，該第二凹槽開口㈣於其 '一倒直角U 具有一第二凹槽底部322a及一對第、、體2〇°該第二凹槽 第二凹槽底部322a ?琴笛 對弟一凹槽侧臂322b，該 直距離定義為第二子接"地^~:槽側臂322b之自由端的垂 第-子接地面Lit::的長度，用表示。該 部322a交又相連/；； 一子接地面322在該第二凹槽底 該第一子接地面川一 1側臂3 2 2 b對稱地分佈於 卞獲地面321的兩側，哕笙 第一子接地面321遠離該第;體H點323設置在該 該第二咖3U的長度hf:::-端上。 的長度以致相與㈣二子接地面322 二凹槽底部322a最佳地位於:二二槽底部3113與該第 , , 、^基板10的同一水平位置上 (仁兩者係分別位於第一表面u盥 言之，該第一凹槽底部3na的第面/2上），換 兩者中，一層基板1〇。另-方面，該 羼，伸lla與该第二凹槽底部322a亦可以不重 遠離的m ! i t子接地面322應以相互 不〜；°又（p為兩者的延伸方向為相反方向），而 第=:置，只是以相互遠離的方式設置時，應當以該 第凹槽底部3lla與該第二凹槽底部处儘量靠近為原 10 201044694 由端3第第1圖中所示的該第-凹槽側臂黯之自 Γ槽侧臂伽之自由端的垂直距離h田4 =-二射體311的長度hl與該第二子接 : 食！ 之和。此外， 該第一凹槽㈣311b ; 321 ^長度不小於 端的垂直距離h，因此，：第二凹槽側臂之自由 視為該第二天線體30二弟甘子 321的長度可以 Ο ❹ 的長产hi^ 其不小於該第二輕射體州 的長=與該第二子接地面切的長度Μ之和。 -第二頻段體2〇與該第二天線體30用以產生 段可以為不則㈣巾該第—紐與該第二頻 路的㈣“ 第 可分別涵蓋室内無線區域網 (如51 50 s 〇 2400〜2484 MHZ )以及無線區域網路的高頻 兮第Γ=Γ5ΜΗζ)所需的寬頻頻寬。為滿足該條件， 的第一輕射體2U的長度（指該第一幸畐 ^體自然延伸的總長度）應設計為略小於該低頻頻段 糖一波長’該第一接地面221的長度應略等於該低 '員又的四分之一波長；該第二天線體3〇的該第二輻射 311之第一凹槽側臂3Ub之自由端至該第二凹槽側臂 j2b之自由端的垂直距離h略等於該高頻頻段的二分之 一波長，該第二天線體30的第一子接地面321的長度不 小於（即大於或等於）該高頻頻段的二分之一波長。 _该雙饋入天線ι〇0並不需要大面積的接地面做為天線 輻射的條件，藉此可縮小天線整體體積，且結構簡單、製 作容易、成本低廉。 201044694 當然，該雙饋入天線100的具體結構還可作多種變 化，結合第2圖至第13圖，分別介紹本發明其他實施例 中雙饋入天線100的具體結構。 如第2圖所示，本發明第二實施例提供的雙饋入天線 1〇〇，其第一天線體20的第一輕射體211以不同於第一實 施例中的方式蜿蜒曲折地設置在該基板1〇的一端。同樣'， 如第3圖所示，本發明第三實施例提供的雙饋入天線 100，其第一天線體20的第一輻射體211以另一種方式蜿 蜒曲折地設置在該基板10的一端。該第一實施例至第三 實施例中該第-輕射體211的自然延伸長度是一樣的，^; 最佳為略小於該低頻頻段的四分之一波長，但該第一輻射 體211可以有不同的彎曲的設置方式，只要苴設置於^芙 板10的一端’且儘量佔用基板10 —端較短的長度，、= 小讀第-天線體20的總體長度，從而進一步減小該雙饋 入天線1GG的體積。第2圖至第3圖中的a部分均代表基 板10的第一表面11上的天繞么士爐土 的兹-矣而”〇構部分則代表基板10 Γ二t /線結構’而其他實施條件則請參考 第一實施例，在此不予贅述。 1 如第4圖至第6圖所示，本發明 施例提供的雙饋入天線1〇〇, Α第""至第六實 u具弟一天線體20的第一接砧 面221分別為圓形、橢圓形和正六邊形，而其=件ί: 供的雙饋入天線刚，盆第例祝明，本發明提 可以為多種形狀例如多邊形、圓# ▲的第接地面221 施例所提供之形狀’只要滿足其長=尺 ㈣的四分之-波長即可，換言之，只== 12 201044694 邊、該圓形之直徑或該橢圓形之長軸 預疋低頻頻段的四分之一波長的條件寸略荨於一 圖中的a部分均代表基板1〇的第—表。弟4圖至第6 構，b部分則代表基板10的第二表 11上的天線結 如第7圖和第8圖所示，本發 ^天線結構。 供的雙饋入天線100,其第二天線體3第二=實施例提 與第二子接地面322與第-實施例中的直 田射體311 ❹ 狀不同，分別具有一弧形凹槽形狀和ν = 形 部件的結構則與第一實施例相同。另？=所其他 =射=的實二= =個實施例說明，該第二天線體30凹：：=„ 與第一子接地面322的凹槽 _ 角U形凹槽、弧形凹槽和V形凹了心 :方向相反’且第二輻射體311的側臂自由端至；； =2丨的：！自由端的距離(上述距離的計算請ί考第 實也例之内谷）4等於該高頻頻段的二分之一 7圖至第8圖中的&部分均代表基板⑺的第二 上的天結構’ ^分則代表基板1G的第二表面12 刚，發明第九實施例提供的雙饋入天線 八第一天線體3〇的第二子接地面322具有一 口 η:'其„牛則與第一實施例完全相同。該第九實施 垃I、5兄明遠第二天線體30的第二輻射體311與第二子 射體m:凹槽形狀可以多種形式外’還說明該第二輻 ,χ Λ第—子接地面322的凹槽形狀可以不相同，例 如一個為。形，另-個為直角U形。 13 201044694 • > 如第10—圖所示’本發明第十實施例提供的雙饋入天 鬥100’其第一天線體30的第—子接地面321的形狀為擴 Η形’而不再是前九個實施例中那種長條形，其他部件則 相同。該實施例說明，該第二天線體30 的第-子接地面321的形狀可以作出多種形狀的變化 形、橢圓形等。換言之，該第一子接地面321可 為-長方形、圓形或橢圓形，而該長方形之長邊、 =或該橢圓形之長軸的尺寸大於或等於一預定高頻 頻#又的一分之一波長即可。 女第11圖所不’本發明第十一實施 圓:第其第的第， 22為開口向下的圓弧形凹槽形 一輕射體311為開口向上的圓弧形凹槽形狀，並 的凹槽側臂之自由端至’该第二_體311 =:等於該第-子接地二二 ==例中該第一子接地面321長度方向 離二當該第-子接地面321的長度尺==距 ，射體w的凹槽側臂之自由端至 =2二 槽側壁自由端的距離h時，該第二接：：322的凹 最小。第9圖線體3〇的尺寸達到 ΰ第11圖中的3部分均代表基板1〇的第一 14 201044694 構’b部分則代表基板㈣二表面 請^合參閱帛12圖和第13圖，本發 = Γ，00,其各部件形狀和結構與第：實」 例基本相同、、特別之處在於，該第—天線體的第一 接地單元22分別形成於該基板10的 鬼π — 一表面12上，即與其他實施例不同，該 ❹ 〇 第—接地單元22形成於該基板㈣ 31幵〈成於令第外’该第二天線體3G的第二輕射單元 元32形成於該第二表面二，線體3〇的第二接地單 該基板10的同—表面上A ’、d第一接地單元形成於 - 〇〇 。為耦接該第一輻射單元21與該 ί傳在該基板1〇上形成有-通孔15，該同 的第-幸H 7連接。該實施例說明，該第一天線體20 在美板Γ〇的Λ和第一接地單元22也可根據需要設置 2:第u =表面’而不限於設置在基板1〇的同-表 L1二广部分均代表基板1〇的第-表面η上 線結構。科則代表基板1G的第二表面12上的天 以下以第—實 14圖至第17圖， 行天線實驗時所量 請參考第14 反射係數及隔離度 施例的雙饋入天線100為對象，結合第 介紹本發明提供的雙饋入天線100在進 測的特性表現： 圖，本發明第一實施例雙饋入天線100 的量測結果圖。其中返回損失曲線C1 i 15 201044694 代表該雙饋入天線100在低頻範圍的表現，返回損失曲線 C22則代表該雙饋入天線在高頻範圍的表現，而隔離度曲 線C21則為兩頻率的干擾情況。一般來說，天線阻抗頻寬 特性在-10 dB以下則可以提供較佳的傳輸品質，由第14 圖可看出，該雙饋入天線1〇〇的C11曲線在小於-10 dB的 阻抗頻寬定義下滿足2400〜2484 MHz的操作頻段；同樣 地，曲線C22在5150〜5875 MHz時亦滿足小於-10 dB的 條件；另一方面，曲線C21在高頻段或低頻段的部分均小 於-20 dB，說明兩者之間具有相當良好的隔離度，使兩頻 段在操作時不易發生干擾。 請參閱第15圖，為第一實施例提供的雙饋入天線100 的第一天線體20激發在2442 MHz的二維輻射圖，從X-Y 平面、X-Z平面以及Y-Z平面上的輻射場形可看出，該雙 饋入天線100在2442 MHz的輻射場形在X-Y平面為良好 的全向性輻射場形，滿足一般無線區域網路操作的應用需 求。 請參閱第16圖，為第一實施例提供的雙饋入天線100 的第二天線體30激發在5490 MHz的二維輻射圖，從X-Y 平面、X-Z平面以及Y-Z平面上的輻射場形可看出，該雙 饋入天線100在5490 MHz的輻射場形在X-Y平面為良好 的全向性輻射場形，滿足一般無線區域網路操作的應用需 求。 請參閱第17圖，本發明第一實施例提供的雙饋入天 線100的天線增益與輻射效率實驗曲線圖，其中，C44為 天線增益曲線，表示天線的增益值，C55為輻射效率曲線， 表示天線的輻射效率。而從實驗曲線中可發現，該雙饋入 16 201044694 在低頻和高㈣段其增益值均大於2 dB1，且其 8()%’因此’該雙饋人天線1GG在低頻頻 &和冋頻頻&均可滿足訊號傳輸的要求。 綜上所述，本發明具有下列幾項優點： 操作二發：摔的作雙：天二r πW '貝插作頻帶，更因為雙饋入的特點，因而 Ο Ο ==饋入端外接一切換電路，故可避免天線特性 的降低，同時可滿足雙模組應用的需求。 2.另一方面，本發明提出的雙饋入天線100只 =的二屬：天線的接地面，故整體體積具二 的機殼内ί饋入天線100更可廣泛的應用於無線產品 模二=:===的結構簡單而具有 發明;本發明之較佳實施例，非意二 圍’故舉凡運用本發明說明書及圖式内 圍内均同理皆包含於本發明之咖 【圖式簡單說明】 Μίίΐ明第一實施例雙饋入天線之結構示意圖； 第心本入天線之結構示意圖’· 第4例雙饋入天線之結構示意圖； 明第四實施例雙饋入天線之結構示意圖； 第5圖疋本發明第五實施例雙 ^圖是本發明第六實施例雙績入天線 第7圖是本發明第七實施例雙饋入天線之结以; 17 201044694 第8圖是本發明第八實施例雙饋入天線之結構示意圖； 第9圖是本發明第九實施例雙饋入天線之結構示意圖； 第10圖是本發明第十實施例雙饋入天線之結構示意圖； 第11圖是本發明第十一實施例雙饋入天線之結構示意 圖； 第12圖是本發明第十二實施例雙饋入天線之結構側面示 意圖； 第13圖是本發明第十二實施例雙饋入天線之正反兩面結 構示意圖； 第14圖是本發明第一實施例雙饋入天線反射係數及隔離 度之量測結果圖； 第15圖是本發明第一實施例雙饋入天線在2442 MHz之 -—維輕射圖， 第16圖是本發明第一實施例雙饋入天線在5490 MHz之 二維輻射圖；以及 第17圖是本發明第一實施例雙饋入天線之天線增益與輻 射效率實驗曲線圖。 18 201044694 【主要元件符號說明】Shape, the second groove opening (four) has a second groove bottom 322a and a pair of the second bottom portion 322a and the second groove bottom portion 322a at the 'one inverted right angle U' A groove side arm 322b, which is defined as the length of the second sub-connector: the length of the vertical-sub-ground plane Lit:: of the free end of the slot side arm 322b. The portion 322a is connected and connected to each other; a sub-ground plane 322 is symmetrically distributed on both sides of the seizure ground 321 at the second sub-plane of the second sub-plane. The first sub-ground plane 321 is away from the first; the body H point 323 is disposed on the length hf:::- of the second coffee 3U. The length of the phase and the (four) two sub-ground plane 322 and the two-groove bottom 322a are optimally located at the same horizontal position of the second and second trough bottoms 3113 and the substrate 10 (the two sides are respectively located on the first surface u In other words, the first surface of the first groove 3na is on the second side of the second side, and in one case, one substrate is 1 〇. On the other hand, the 羼, the extension lla and the second groove bottom 322a may not be far away from each other; the m sub-ground surface 322 should not be mutually opposite; ° (p is the opposite direction of the extension direction of the two) And the first =: set, only when set apart from each other, the bottom of the first groove 3lla and the bottom of the second groove should be as close as possible to the original 10 201044694 by the end 3 shown in the first figure The vertical distance of the free end of the first groove side arm Γ from the side of the groove side arm h field 4 = the length hl of the second body 311 and the second sub-connection: food! Sum. In addition, the first groove (four) 311b; 321 ^ is not less than the vertical distance h of the end. Therefore, the freedom of the second groove side arm is regarded as the length of the second antenna body 30. The production hi is not less than the sum of the length of the second light emitter state = the length Μ of the second sub-ground surface. - the second frequency band body 2 〇 and the second antenna body 30 for generating a segment may be a different (four) towel, the first button and the second frequency channel (four) "the first can cover the indoor wireless area network (such as 51 50 s 〇 2400~2484 MHZ ) and the high frequency bandwidth of the wireless local area network Γ Γ Γ ΜΗζ ΜΗζ 所需 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The total length of the natural extension of the body should be designed to be slightly smaller than the wavelength of the sugar in the low frequency band. The length of the first ground plane 221 should be slightly equal to the quarter wavelength of the lower member; the second antenna body 3〇 The vertical distance h from the free end of the first groove side arm 3Ub of the second radiation 311 to the free end of the second groove side arm j2b is slightly equal to one-half wavelength of the high frequency band, the second antenna The length of the first sub-ground plane 321 of the body 30 is not less than (i.e., greater than or equal to) one-half of the wavelength of the high-frequency band. _ The dual-input antenna ι〇0 does not require a large-area ground plane as an antenna. The radiation condition can reduce the overall volume of the antenna, and the structure is simple, the production is easy, and the cost is low. 4694. Of course, the specific structure of the dual feed antenna 100 can also be variously changed. Referring to FIG. 2 to FIG. 13 , the specific structure of the dual feed antenna 100 in other embodiments of the present invention is respectively introduced. According to the second embodiment of the present invention, the dual-input antenna 1 211 of the first antenna body 20 is disposed on the substrate 1 in a manner different from that in the first embodiment. One end of the cymbal. Similarly, as shown in FIG. 3, in the dual feed antenna 100 according to the third embodiment of the present invention, the first radiator 211 of the first antenna body 20 is arranged in a meandering manner in another manner. At the one end of the substrate 10. The natural extension length of the first-light projecting body 211 in the first embodiment to the third embodiment is the same, and is preferably slightly smaller than a quarter wavelength of the low frequency band. However, the first radiator 211 may have different curved arrangements, as long as the crucible is disposed at one end of the panel 10 and occupy the shorter length of the substrate 10 as much as possible, and = the total of the antenna-body 20 Length, thereby further reducing the volume of the dual feed antenna 1GG. Figure 2 to 3 in the figure represents the 矣-矣 of the 绕 么 炉 炉 on the first surface 11 of the substrate 10 and the 〇 structure represents the substrate Γ 2 t / line structure', and other implementation conditions are referred to The first embodiment will not be described herein. 1 as shown in FIG. 4 to FIG. 6 , the double-feed antenna 1 〇〇 provided by the embodiment of the present invention, and the first anvil surface 221 of the antenna body 20 of the sixth embodiment. They are circular, elliptical and regular hexagons respectively, and they are = ί: for the double feed into the antenna, the basin is the first example, the invention can be a plurality of shapes such as a polygon, a circle # ▲ of the ground plane 221 The shape provided by the example 'supplements as long as it satisfies the quarter-wavelength of its length=foot (four), in other words, only == 12 201044694 side, the diameter of the circle or the long axis of the ellipse preliminarily the low frequency band of four The condition of one wavelength is slightly larger than the part a in the figure, which represents the first table of the substrate 1〇. From Fig. 4 to Fig. 6, the portion b represents the antenna junction on the second table 11 of the substrate 10. As shown in Figs. 7 and 8, the antenna structure. The dual-input antenna 100 is provided, and the second antenna body 3 of the second embodiment is different from the second sub-ground surface 322 and the direct field emitter 311 of the first embodiment, each having an arc-shaped groove. The shape and the structure of the ν = shaped member are the same as in the first embodiment. another? = other = = true = = = embodiment shows that the second antenna body 30 is concave:: = „ with the first sub-ground plane 322 groove _ angle U-shaped groove, curved groove and V-shaped concave heart: opposite direction 'and the free end of the side arm of the second radiator 311 to;; = 2 丨:! The distance of the free end (the calculation of the above distance, please refer to the inner valley) 4 The & portion of the high frequency band from the 7th to the 8th represents the second structure of the substrate (7), and the second surface 12 of the substrate 1G represents the ninth embodiment. The second sub-ground plane 322 of the first antenna body 3 提供 provided with the double-fed antenna 8 has a port η: 'the cow is exactly the same as the first embodiment. The second radiator 311 and the second sub-body m of the second antenna body 30 of the ninth embodiment, the second antenna body 30: the shape of the groove may be in various forms, and the second antenna is also described. The shape of the grooves of the sub-ground planes 322 may be different, for example, one. Shape, the other one is a right angle U shape. 13 201044694 • > As shown in Fig. 10, the double feed-in-the-draft 100' provided by the tenth embodiment of the present invention has the shape of the first sub-ground plane 321 of the first antenna body 30 being expanded. It is no longer the long strip in the first nine embodiments, and the other components are the same. This embodiment illustrates that the shape of the first sub-ground plane 321 of the second antenna body 30 can be varied in shape, elliptical, or the like. In other words, the first sub-ground surface 321 may be a rectangle, a circle, or an ellipse, and the long side of the rectangle, or the major axis of the ellipse, has a size greater than or equal to a predetermined frequency of the high frequency. One wavelength is enough. The eleventh implementation circle of the present invention is the eleventh implementation circle of the present invention: the first one is 22, and the circular arc-shaped groove-shaped light-emitting body 311 having an opening downward is an arc-shaped groove shape with an opening upward, and The free end of the groove side arm to the second body 311 =: equal to the first sub-ground two-two == in the example, the first sub-ground surface 321 is oriented in the length direction of the first sub-ground plane 321 The length of the ruler == distance, the distance from the free end of the groove side arm of the projecting body to the free end of the side wall of the =2 two-slot, the recess of the second connection: 322 is the smallest. Figure 9 shows the size of the line body 3〇. The 3 parts in Figure 11 represent the first 14 of the substrate 1 2010. The structure of the 'b part represents the substrate (4). Please refer to Figure 12 and Figure 13, The present invention has the same shape and structure as the first embodiment, and is particularly characterized in that the first grounding unit 22 of the first antenna body is formed on the substrate 10, respectively. On the surface 12, that is, unlike the other embodiments, the first grounding unit 22 is formed on the substrate (four) 31, and the second light-emitting unit 32 formed on the second antenna body 3G is formed on the outer surface The second surface 2, the second grounding of the wire body 3〇, the first grounding unit of the substrate A on the same surface A', d is formed at - 〇〇. To couple the first radiating element 21 and the 355, a through-hole 15 is formed on the substrate 1 , and the same first-half H 7 is connected. In this embodiment, the first antenna body 20 and the first grounding unit 22 of the first antenna body 20 may also be provided with 2: u=surface ' as needed, and is not limited to the same table L1 disposed on the substrate 1〇. The Erguang part represents the first-surface η upper line structure of the substrate 1〇. The section representing the second surface 12 of the substrate 1G is below the first to the 14th to the 17th. For the antenna experiment, please refer to the double-feed antenna 100 of the 14th reflection coefficient and isolation example. In conjunction with the description, the characteristic of the dual-feed antenna 100 provided by the present invention in the test is shown: Fig. is a measurement result diagram of the dual feed antenna 100 of the first embodiment of the present invention. The return loss curve C1 i 15 201044694 represents the performance of the dual feed antenna 100 in the low frequency range, the return loss curve C22 represents the performance of the dual feed antenna in the high frequency range, and the isolation curve C21 is the interference of the two frequencies. Happening. In general, the antenna impedance bandwidth characteristic below -10 dB can provide better transmission quality. As can be seen from Figure 14, the C11 curve of the double-fed antenna 1〇〇 is less than -10 dB. Under the wide definition, the operating frequency band of 2400~2484 MHz is satisfied; similarly, the curve C22 satisfies the condition of less than -10 dB at 5150~5875 MHz; on the other hand, the curve C21 is smaller than -20 in the high frequency band or the low frequency band. dB, indicating a fairly good isolation between the two, making the two bands less prone to interference during operation. Referring to FIG. 15, the first antenna body 20 of the dual feed antenna 100 provided by the first embodiment excites a two-dimensional radiation pattern at 2442 MHz, and the radiation field shape from the XY plane, the XZ plane, and the YZ plane can be It can be seen that the radiation field shape of the dual feed antenna 100 at the 2442 MHz is a good omnidirectional radiation field shape in the XY plane, which satisfies the application requirements of general wireless local area network operation. Referring to FIG. 16, the second antenna body 30 of the dual feed antenna 100 provided for the first embodiment excites a two-dimensional radiation pattern at 5490 MHz, and the radiation field shape from the XY plane, the XZ plane, and the YZ plane can be It can be seen that the dual feed antenna 100 has a good omnidirectional radiation field shape in the XY plane at a radiation field of 5490 MHz, which satisfies the application requirements of general wireless local area network operation. Referring to FIG. 17, an experimental graph of antenna gain and radiation efficiency of the dual feed antenna 100 according to the first embodiment of the present invention, wherein C44 is an antenna gain curve, indicating a gain value of the antenna, and C55 is a radiation efficiency curve, indicating Radiation efficiency of the antenna. From the experimental curve, it can be found that the double feed 16 201044694 has a gain value greater than 2 dB1 in the low frequency and high (four) segments, and its 8 ()% 'so' the doubly-fed antenna 1GG at low frequency & Both frequency & can meet the requirements of signal transmission. In summary, the present invention has the following advantages: Operation two hair: the double of the fall: the second day r πW 'bee inserted into the frequency band, and because of the characteristics of the double feed, thus Ο Ο == the feed end is externally connected Switching the circuit can avoid the reduction of antenna characteristics and meet the needs of dual module applications. 2. On the other hand, the dual feed-in antenna 100 proposed by the present invention only has two bases: the ground plane of the antenna, so that the inner casing of the overall volume has two antennas, and the antenna 100 can be widely applied to the wireless product module. The structure of =:=== is simple and has the invention; the preferred embodiment of the present invention is not intended to be used in the present invention. Brief Description of the Invention 结构 ΐ ΐ 结构 结构 结构 第一 第一 第一 第一 第一 第一 第一 第一 第一 结构 结构 结构 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; 5 is a fifth embodiment of the present invention, which is a double-input antenna according to a sixth embodiment of the present invention. FIG. 7 is a diagram of a double-input antenna according to a seventh embodiment of the present invention; 17 201044694 FIG. 8 is 8 is a schematic structural diagram of a dual feed antenna according to a ninth embodiment of the present invention; FIG. 10 is a schematic structural view of a dual feed antenna according to a tenth embodiment of the present invention; 11 is a double embodiment of the eleventh embodiment of the present invention 12 is a schematic side view of the structure of the double feed antenna of the twelfth embodiment of the present invention; FIG. 13 is a schematic view showing the structure of the front and back sides of the double feed antenna of the twelfth embodiment of the present invention; The figure is a measurement result of the reflection coefficient and the isolation of the double feed antenna of the first embodiment of the present invention; FIG. 15 is a light transmission diagram of the double feed antenna of the first embodiment of the present invention at 2442 MHz, the 16th The figure is a two-dimensional radiation pattern of the dual feed antenna at 5490 MHz according to the first embodiment of the present invention; and Fig. 17 is a graph showing the antenna gain and radiation efficiency of the double feed antenna of the first embodiment of the present invention. 18 201044694 [Description of main component symbols]
10 基板 11 第一表面 12 第二表面 100 雙饋入天線 20 第一天線體 21 第一輻射單元 211 第一輻射體 212 短路細片 213 第一饋入點 22 第一接地單元 221 第一接地面 222 第一接地點 23 ' 33 同軸傳輸線 231 ' 331 中心導體 232 、 332 外層接地導體 30 第二天線體 31 第二輻射單元 311 第二輻射體 311a 第一凹槽底部 311b 第一凹槽側臂 312 微帶傳輸線 313 第二饋入點 32 第二接地單元 321 第一子接地面 322 第二子接地面 322a 第二凹槽底部 322b 第二凹槽側臂 323 第二接地點 15 通孔 h 垂直距離 hi 第二輻射體長度 h2 第二子接地面長度 Cll 'C22 返回損失曲線 C21 隔離度曲線 C44 天線增益曲線 C55 輻射效率曲線 1910 substrate 11 first surface 12 second surface 100 double feed antenna 20 first antenna body 21 first radiation unit 211 first radiator 212 short chip 213 first feed point 22 first ground unit 221 first connection Ground 222 First grounding point 23' 33 Coaxial transmission line 231 '331 Center conductor 232, 332 Outer ground conductor 30 Second antenna body 31 Second radiating element 311 Second radiator 311a First groove bottom 311b First groove side Arm 312 microstrip transmission line 313 second feed point 32 second ground unit 321 first sub ground plane 322 second sub ground plane 322a second recess bottom 322b second recess side arm 323 second ground point 15 through hole h Vertical distance hi Second radiator length h2 Second sub-ground surface length Cll 'C22 Return loss curve C21 Isolation curve C44 Antenna gain curve C55 Radiation efficiency curve 19