1291783 九、發明說明·· 【發明所屬之技術領域】 本發明係有關於一種輕合饋入之天線裝置，尤指一種 在倒F天線之訊號饋入線上串設一輕合元件，以作為調整 天線輸入阻抗之虛部阻值的一種輕合饋入之天線裝置者。 【先前技術】 近年來，無線通訊技術無論是在軍事、朗或是個人 用途上，都有愈來愈廣泛的應用。未來的趨勢，則是傾向 在所有的電子裝置上均附加無線通訊的功能。例如，無線 滑鼠、無線鍵盤、無線區域網路裝置等電腦週邊裝置，或 是，、具手機魏之個人數位助理（PDA)、藍芽耳機' 藍芽MP3等個人消費性f訊產品，或甚至是冰箱、 等家電用品等等。 對於現今的無線軌n切分均是在 多用以產生無線訊號之電子電路的系統電路板上':配2 印刷式天線裝置，以提供無線通訊功能。於該天線裝置上 則設計有特定形狀與長度之輻射導體，以適於增強預定頻 率之無線訊號的發射或接收能力。一般來說，這些天線裝 置在與祕電路板整合時’設計麵料在·板上預J 阻抗匹配電路以補償天線裝置本身的輸入阻抗。 請參閱圖-與圖二，其㈣-係為—f知的倒F型 天線裝置释說rtedFAntenna，示意圖。而圖二則是 如圓-所示之習知倒F型天線裝置1〇的輸入阻抗等效電 1291783 路示意圖。 如圖一所示，該天線裝置10之基板u上的輻射導體 12的一端係直接連接於接地面13之接點121。用於產生 無線通訊之訊5虎的訊號源14，則是透過一直接饋入線15 来直接連接到輻射導體12之一接點122上。於是，訊號 源14所產生之訊號，將可經由直接饋入線15傳送至輻射 導體12並進而輻射至自由空間中。此時，對於該倒F型 夭線裝置ίο而言，其輸入阻抗值係為Za(Za=Ra+jXa，1291783 IX. INSTRUCTIONS · TECHNICAL FIELD OF THE INVENTION The present invention relates to a light-fed antenna device, and more particularly to a light-splicing component on a signal feed line of an inverted-F antenna for adjustment A light-fed antenna device for the imaginary value of the antenna input impedance. [Prior Art] In recent years, wireless communication technologies have become more and more widely used in military, military or personal use. The future trend is the tendency to attach wireless communication to all electronic devices. For example, a computer peripheral device such as a wireless mouse, a wireless keyboard, or a wireless local area network device, or a personal consumer information device such as a mobile personal assistant (PDA), a Bluetooth headset, a Bluetooth MP3, or the like, or Even refrigerators, home appliances, and so on. For today's wireless track n-segmentation is on the system board that is used to generate electronic signals for wireless signals. ': 2 printed antenna devices to provide wireless communication. Radiation conductors of a particular shape and length are designed for the antenna device to accommodate the transmission or reception of wireless signals of a predetermined frequency. In general, these antenna devices are designed to integrate the board with the pre-J impedance matching circuit to compensate for the input impedance of the antenna device itself. Please refer to Figure-II and Figure 2, where (4)- is the inverted-F antenna device that is known as ftedFAntenna. The second figure is a schematic diagram of the input impedance equivalent power of the conventional inverted F-type antenna device as shown in the circle - 1291783. As shown in Fig. 1, one end of the radiation conductor 12 on the substrate u of the antenna device 10 is directly connected to the contact 121 of the ground plane 13. The signal source 14 for generating wireless communication is directly connected to one of the contacts 122 of the radiation conductor 12 via a direct feed line 15. Thus, the signal generated by signal source 14 will be transmitted via direct feed line 15 to radiating conductor 12 and, in turn, into free space. At this time, for the inverted F-type twisting device, the input impedance value is Za (Za=Ra+jXa,
Ra為實部阻值，Xa為虛部阻值），其等效電路如圖二所 示。當接點122往接點121方向移動時，天線裝置1〇之 輪入阻抗的實部阻值會變小；往相反方向移動時，天線裝 置1〇的實部阻值齡變大。因此，纽計倒F型天線裝 置ίο時，一般會以調整接點122位置的方式來控制天線 乘置10與系統電路間的實部阻值匹配。然而，此方法對 於天線虛。卩阻值的I響有限。無線通赠統電路的阻抗值 一般為50Ω，設計者可以找到一接點122使其天線的實 部阻值Ra A 5GQ，但往往f要在電路板上翻匹配電 路來消除天線虛部阻值办的效應以增加頻寬。此一匹配 寬路之成本相對較高，也相對較佔用電路板空間，而有進 一步改良之空間者。 【發明内容】 本毛明之第-目的，在於提供一種耦合饋入之天線裝 置广可在天線裝置本身即提供其輸入阻抗之實部阻值與 1291783 虛部阻值兩者的匹配補償功能者，而可不須在系統電路板 上額外預留匹配電路者。 本發明之第二目的，在於提供一種耦合饋入之天線裝 置’其可藉由在天線裝置之訊號饋入線上「串聯」一耦合 元件’以提供調整其輸入阻抗之虛部阻值的功能。並且， 藉由移動饋入線與天線裝置之輻射導體之間的接點位 置’來提供調整其輸入阻抗之實部阻值的功能者。 為達上述之目的，本發明係提供一種耦合饋入之天線 裝置，包括有··一基板、一訊號源、一接地面、一輻射導 體、以及一耦合饋入線。該基板至少具有一第一層面及一 第一層面’於該基板之層面上並定義有相互垂直之一第一 方向及一第二方向。該訊號源係裝置在該基板之該第一層 面了用以k供無線通訊之訊號。該接地面係為電性接地 且至少覆蓋於基板之第二層面的一部份區域。該輻射導體 孫設置於基板之第二層面，該輻射導體係自接地部起先大 致朝向第-方向延伸-預定之第—長度後、再大致轉朝向 第二方向延伸-預定之第二長度，而實質成為—倒F天線 架構。該耦合饋入線係連接於訊號源與輻射導體之間，且 係由包括相互耦合且不相接觸之至少一第—饋入線與一 第二饋入線所組成。其中，該第二饋人線之係連接於 該輻射導體之-預定接點處。藉由移動該接點之位置可用 以調整天線裝置之輸人阻抗之—實雜值。而該第一饋入 線與第二饋入線之間則係藉由，合元件相互&人，二 輕合元件係實質上串接於訊號源與該接點之間。因°此，^ 1291783 由改變该麵合元件之一開路短支（〇pen 之輸入阻 抗，將可用以調整該天線裝置之輸入阻抗之一虛部阻值。 如此’便可達到以「串聯」的方式直接在天線裝置本身設 置「實部阻抗」與「虛部阻抗」的調整機制，不僅不須在 系統電路板上額外設置「虛部阻抗」的匹配電路，且設計 更簡單、成本更低、也更節省空間者。 【實施方式】 為了能更清楚地描述本發明所提出之耦合饋入之天 線裝置，以下將配合圖示詳細說明之。 請參閱圖三，其係為本發明之耦合饋入之天線裝置 20之第一較佳實施例的立體透視示意圖。於本第一較佳 實施例中，本發明之耦合饋入之天線裝置2〇係包括有： 一基板21、一訊號源22、一接地面23、一輕射導體24、 以及一耦合饋入線25。 該基板21係由介電材質所構成之扁平板元件，其至 少具有一第一層面211及一第二層面212，於該基板21 之層面211、212上並定義有相互垂直之一第一方向91及 一第二方向92。所述之第一層面211與第二層面212可 以是基板21的上表面、下表面、或是中間炎層者。 該訊號源22係裝置在該基板21之該第一層面211 , 可用以提供無線通訊之高頻訊號。該訊號源22實際上係 包括有用以產生無線訊號之若干電子電路（或積體電路） 元件。由於4 afL號源22之電路設計亦非本發明之技術特 9 1291783 徵且可自習用技術選用，故僅以一訊號源22符號示意表 現且不再贅述其詳細構成。 該接地面23係為電性接地（GND)且至少覆蓋於基 板21之第二層面212的一部份區域。尤其是在垂直於第 一層面211之投影方向上可廣泛涵蓋包含該訊號源22位 置的附近區域處的第二層面212上，一般來說均覆蓋有該 接地面23。換句話說，該訊號源22於垂直於第一層面2^ 之^一方向上的投影係會被第二層面212上之接地面23所 涵蓋。 該輻射導體24係設置於基板21之第二層面212。於 本第一較佳實施例中，該輻射導體24 —端係自接地部23 邊緣之一接點241位置處起’先大致朝向第一方向91延 伸一預定之第一長度後、再大致轉朝向第二方向92延伸 一預定之第二長度，而構呈一類似L型細長條狀的導體 結構。 。玄輕合饋入線25係連接於訊號源22與輕射導體24 之間，且係由包括· 一第一饋入線251、一第二饋入線 252、以及一耦合元件253所組成。於本第一較佳實施例 中，該第一、第二饋入線251、252及耦合元件253均是 位在第一層面211上，且於垂直於第一層面211之方向上 酌投影也都沒被第二層面212上之接地面23所涵蓋。該 第一饋入線251之一尾端係藉由一訊號傳輸線26連接於 號源22。而該第二饋入線252之一前端則係藉由一導 電栓27 (Via)連接於該輻射導體24之一預定接點242 1291783 處。如習用技術一般，本發明之天線裝置20也可藉由移 動該接點242之位置來調整與匹配該天線裝置20之輸入 阻抗的一實部阻值。此外，由於該耦合饋入線25與輻射 導體24在垂直於第一層面211之方向上的投影係呈現一 類似倒F型的結構，因此，如圖三所示之本發明天線裝置 20 —般亦俗稱為倒F天線（InvertedF Antenna)。 該苐一饋入線251與第二饋入線252之間係藉由該輕 合元件253相互麵合且不相接觸，所以，該麵合元件253 孫貫質上係「串接」於訊號源22與該預定接點242之間。 於圖三所示之本發明第一較佳實施例中，該耦合元件253 係包括有兩條鄰近且平行延伸之短輕合線2531、2532所 構成’其中一短耦合線係2531連接於第一饋入線251之 别^、另一短耗合線2532係連接於第二饋入線252之 一尾端。並且，兩短耦合線2531、2532的長度與寬度可 為相同或也可不同。 該輕合元件253可被視開路短支(0pen Stub)。開路短 支在高頻的輸入阻抗一般可表示為Zs，Zs = j(_z〇 x c〇t WhjXs ; Xs = _z〇 x cot /5卜如圖三所示之編號(f，，❼ 位置處係為其輸入蟑(Input Port)，z〇為短支的特性阻 杈’点為電磁波在短支上的傳播常數，丨為短支的長度； # 玄開路短支的輸入阻抗僅昇有虛部阻值。 因此，本發明之天線裝置20的等效電路可視為阻抗 s與阻抗Za的「串聯」。如圖四所示，即為如圖三所示 之本發明倒F型天線裝置2G的輸人阻抗等效電路示意 11 1291783 圖。我們可以藉由適當的設計該兩耦合線2531、2532的 線寬、線長以及間距，來得到預期的虛部阻值。若此虛部 阻值Xs與天線裝置20輸入阻抗的虛部阻值Xa互相消 除時(Xs == -Xa)，系統電路將可獲得良好的匹配。藉由本 發明耦合饋入線25的設計，我們將可直接從天線本身的 架構上改善天線的匹配及頻寬。如此一來，本發明不僅不 夕頁在糸統電路板上額外設置「虛部阻抗」的匹配電路，且 設計更簡單、成本更低、也更節省空間者。 > 以下所述之本發明其他較佳實施例中，因大部份的元 件係相同或類似於前述實施例，因此相同之元件將直接給 予相同之名稱及編號，且對於類似之元件則給予相同名稱 隹在原編號後另增加一英文字母以資區別且不予贅述，合 先敛明。 明參閱圖五’其係為本發明之搞合饋入之天線裝置 20a之第二較佳實施例的立體透視示意圖。於本第二較佳 實施例中，該耦合饋入之天線裝置2〇a同樣包括有：一基 丨板21、一訊號源22、一接地面23、一輻射導體24、以及 一耦合饋入線25a。本發明天線裝置20a之第二較佳實施 例與前述實施例之不同點乃在於··如圖五所示，該搞合饋 入線25a之第一饋入線251a係位於該第一層面211，而 該第二饋入線252a係位於該第二層面212。並且，該耦 合元件253a係由包括兩條分別位於第一層面211與第二 層面212之短耦合線2531a、2532a所構成，其中一短輕 合線2531a係連接於第一饋入線251a、另一短麵合線 12 1291783 2532a係連接於第二饋入線252a。並且，該兩短輕合線 2531a、2532a於垂直於第一層面211之方向上的投影係 至少有-部份相互重疊。於本第二較佳實施例中，該兩搞 合線2531a、2532a係為相互平行且可為相同尺寸或一大 一小的方式組合。 請參閱圖六，其係為本發明之耦合饋入之天線裝置 20b之第二較佳實施例的立體透視示意圖。於本第三較佳 實施例中，該耦合饋入之天線裝置2〇b同樣包括有··一基 板21、一訊號源22、一接地面23、一輻射導體24、以及 一耦合饋入線25b。本發明天線裝置2〇b之第三較佳實施 例與刖述第二較佳實施例之唯一不同點乃在於··如圖六所 示之本發明天線裝置20b之第三較佳實施例中，該耦合元 件253b之兩短耦合線2531b、2532b均是呈空心環狀結 構。所述之空心環狀可以是方形、圓形或其他幾何形狀， 且該兩耦合線2531b、2532b尺寸與形狀可以相同也可以 不同。 凊參閱圖七’其係為本發明之麵合饋入之天線裝置之 第四較佳實施例的立體透視示意圖。本第四較佳實施例與 前述實施例之不同點乃在於：如圖七所示之本發明的基板 鳴係更包括有一第三層面（圖中未示），且該耦合元件253c 鳴包括有：一位於第一層面211上且與第一饋入線251c 湘連接之第一輕合線2531c、一位於第二層面212上且與 第二饋入線252c相連接之第二耦合線2532c、一位於第 三層面上之第三耦合線2533、以及貫穿於第一與第三層 13 1291783 面以供連接第一與第三耦合線253lc、2533之至少一導線 2534，其中，該些耦合線2531c、2532c、2533於垂直於 第一層面211之方向上的投影範圍係至少有一部份相互 重疊。其中，該第一與第三耦合線2531c、2533之形狀係 呈平面狀，且一該第二耦合線2532c之形狀係具有多重彎 折而呈一類似S曲折狀。 請參閱圖八，其係為本發明之耦合饋入之天線裝置之 第五較佳實施例的立體透視示意圖。本第五較佳實施例與 前述實施例之不同點乃在於：如圖八所示之本發明的耦^ 兀件253d係包括有：一具有一開口且呈一 c型結構的耦 合線2531d、以及容納於該c型耦合線253Μ之開口内但 不與其接觸之一短耦合線2532d ,該兩耦合線2531d、 2532d的其中之一係連接於第一饋入線251d、另一耦合線 則係連接於第二饋入線252d。 以上所述之實施例不應用於限制本發明之可應用範 圍。本發明之保護範®應以本發明之申請專利麵内容所 界定技術精神及其均等變化所含括之姻為主者。即大凡 依本發明申請專利範圍所做之均等變化及修飾，仍將不失 本發明之要義所在，亦不脫離本發明之精神和範圍，故都 應視為本發明的進一步實施狀況。 【圖式簡單說明】 圖一係為習知倒F型天線裝置(Inverted F Antenna， IFA)示意圖。 1291783 圖二係為如圖一所示之習知匈f 阻抗等效電路示意圖。 1天線I置的輪入 圖二係為本發明之耦合饋入 施例的立體透視示意圖。線裝置之第—較佳實 的輸 圖四係為如圖三所示之本發明甸F型天 入阻抗等效電路示意圖。 ^ 圖五係為本發明之輕合饋人之天線裝置之第二較 施例的立體透視示意圖。 [佳實 圖六係為本發明之耦合饋入之天線裝置之第三較> 施例的立體透視示意圖 圖七係為本發明之耦合饋入之天線裝置之第四較佳實 施例的立體透視示意圖。 圖八係為本發明之耦合饋入之天線裝置之第五較佳實 施例的立體透視示意圖。 【主要元件符號說明】 10〜天線裝置 11〜基板 12〜輻射導體 m、122〜接點 13〜接地面 14〜訊號源 15〜直接饋入線 16〜訊號傳輸線 20、20a、20b〜天線裝置 21〜基板 211〜第一層面 212〜第二層面 22〜訊號源 23〜接地面 15 1291783 24〜輻射導體 241、242〜接點 25、25a、25b〜_合饋入線 25卜 251a、251b、251c、251d〜第一饋入線 252、 252a、252b、252c、252d〜第二饋入線 253、 253a、253b、253c、253d〜耦合元件 253卜 2531a、2531b、2531c、2531d〜耦合線 2532、2532a、2532b、2532c、2532d〜耦合線 2533〜麵合線 26〜訊號傳輸線 91〜第一方向 2534〜導線 27〜導電栓 92〜第二方向Ra is the real resistance value, Xa is the imaginary resistance value), and its equivalent circuit is shown in Figure 2. When the contact 122 moves in the direction of the contact 121, the real resistance of the wheel-in impedance of the antenna device 1 becomes smaller; when moving in the opposite direction, the real resistance of the antenna device becomes larger. Therefore, when the flip-chip antenna device ίο, the position of the contact 122 is generally adjusted to control the real resistance between the antenna plunging 10 and the system circuit. However, this method is virtual to the antenna. The I value of the resistance value is limited. The impedance value of the wireless communication system is generally 50Ω. The designer can find a contact 122 to make the real resistance of the antenna Ra A 5GQ, but often f must match the circuit on the circuit board to eliminate the imaginary resistance of the antenna. The effect of doing this is to increase the bandwidth. The cost of this matching wide road is relatively high, and it is relatively occupied by the board space, and there is room for further improvement. SUMMARY OF THE INVENTION The first object of the present invention is to provide a coupled feed antenna device that can provide a matching compensation function between the real resistance of the input impedance and the imaginary resistance of the 1291783 in the antenna device itself. It is not necessary to reserve additional matching circuits on the system board. A second object of the present invention is to provide a coupled feed antenna device which can provide a function of adjusting the imaginary value of its input impedance by "connecting" a coupling element 'on the signal feed line of the antenna device. Also, the function of adjusting the real resistance of the input impedance is provided by moving the contact position between the feed line and the radiation conductor of the antenna device. To achieve the above object, the present invention provides a coupled feed antenna device comprising a substrate, a signal source, a ground plane, a radiation conductor, and a coupled feed line. The substrate has at least a first layer and a first layer ′ on the layer of the substrate and defines a first direction and a second direction perpendicular to each other. The signal source device has a signal for wireless communication on the first layer of the substrate. The ground plane is electrically grounded and covers at least a portion of the second level of the substrate. The radiation conductor is disposed on the second layer of the substrate, and the radiation guiding system extends from the ground portion to extend substantially toward the first direction - a predetermined first length, and then substantially rotates toward the second direction - a predetermined second length, and The essence becomes the inverted-F antenna architecture. The coupling feed line is connected between the signal source and the radiation conductor, and is composed of at least one first feed line and a second feed line that are coupled to each other and are not in contact with each other. Wherein the second feed line is connected to a predetermined junction of the radiation conductor. The position of the contact can be adjusted to adjust the input impedance of the antenna device. The first feed line and the second feed line are substantially connected in series between the signal source and the contact by the component and the human and the second light-bonding component. Because of this, ^ 1291783 changes the input impedance of one of the face components (the input impedance of the pen, which can be used to adjust the imaginary resistance of one of the input impedances of the antenna device. This can be achieved by "series" The method of setting the "real part impedance" and "imaginary part impedance" adjustment mechanism directly on the antenna device itself does not need to additionally set a "imaginary part impedance" matching circuit on the system board, and the design is simpler and lower in cost. [Embodiment] In order to more clearly describe the coupled antenna device proposed by the present invention, the following will be described in detail with reference to the accompanying drawings. Referring to FIG. 3, it is a coupling of the present invention. A perspective view of a first preferred embodiment of the antenna device 20 is fed. In the first preferred embodiment, the coupled antenna device 2 of the present invention comprises: a substrate 21 and a signal source. 22. A ground plane 23, a light-emitting conductor 24, and a coupling feed line 25. The substrate 21 is a flat plate member composed of a dielectric material having at least a first layer 211 and a second layer. The surface 212 is defined on the layer 211, 212 of the substrate 21 and defines a first direction 91 and a second direction 92 perpendicular to each other. The first layer 211 and the second layer 212 may be the upper surface of the substrate 21. The source 22 is disposed on the first level 211 of the substrate 21 to provide a high frequency signal for wireless communication. The source 22 is actually included to generate wireless Some electronic circuit (or integrated circuit) components of the signal. Since the circuit design of the source 4 afL source 22 is not the technical feature of the present invention and can be selected by the self-study technique, it is represented by only a signal source 22 symbol and The detailed description is omitted. The ground plane 23 is electrically grounded (GND) and covers at least a portion of the second layer 212 of the substrate 21. Especially in the direction perpendicular to the projection of the first layer 211. The second layer 212 at a nearby area including the location of the signal source 22 is widely covered, and is generally covered by the ground plane 23. In other words, the signal source 22 is perpendicular to the first level 2^ Projection system will be The radiation conductor 24 is disposed on the second layer 212 of the substrate 21. In the first preferred embodiment, the radiation conductor 24 is terminated from the edge of the ground portion 23. A contact 241 is formed to extend a predetermined first length toward the first direction 91 and then extend substantially toward the second direction 92 for a predetermined second length to form an L-shaped elongated strip. The conductor structure 25 is connected between the signal source 22 and the light-emitting conductor 24, and is comprised of a first feed line 251, a second feed line 252, and a coupling element 253. In the first preferred embodiment, the first and second feeding lines 251 and 252 and the coupling element 253 are all located on the first layer 211, and are projected in a direction perpendicular to the first layer 211. Nor is it covered by the ground plane 23 on the second level 212. One end of the first feed line 251 is connected to the source 22 by a signal transmission line 26. The front end of the second feed line 252 is connected to a predetermined contact 242 1291783 of the radiation conductor 24 by a conductive plug 27 (Via). As is conventional in the art, the antenna device 20 of the present invention can also adjust and match a real resistance of the input impedance of the antenna device 20 by moving the position of the contact 242. In addition, since the projection of the coupling feed line 25 and the radiation conductor 24 in the direction perpendicular to the first layer 211 exhibits an inverted F-type structure, the antenna device 20 of the present invention as shown in FIG. Commonly known as Inverted F Antenna. The first feed line 251 and the second feed line 252 are mutually in contact with each other and are not in contact with each other. Therefore, the surface element 253 is "spliced" in series with the signal source 22 and the Between the predetermined contacts 242. In the first preferred embodiment of the present invention shown in FIG. 3, the coupling element 253 includes two short and lightly extending lines 2531 and 2532 extending adjacent to each other. One of the short coupling lines 2531 is connected to the first A feed line 251 and another short consumable line 2532 are connected to one end of the second feed line 252. Also, the lengths and widths of the two short coupling lines 2531, 2532 may be the same or different. The light fitting element 253 can be viewed as an open stub. The input impedance of the open-circuit short-branch at high frequencies can generally be expressed as Zs, Zs = j(_z〇xc〇t WhjXs; Xs = _z〇x cot /5, the number shown in Figure 3 (f,, 位置 position For its input port (Input Port), z〇 is the characteristic of the short branch. The point is the propagation constant of the electromagnetic wave on the short branch, and the length of the short branch is the length of the short branch. # The input impedance of the short branch of the open circuit is only raised to the imaginary part. Therefore, the equivalent circuit of the antenna device 20 of the present invention can be regarded as a "series" of the impedance s and the impedance Za. As shown in FIG. 4, it is the inverted-F antenna device 2G of the present invention as shown in FIG. Input impedance equivalent circuit diagram 11 1291783. We can obtain the expected imaginary part resistance value by appropriately designing the line width, line length and spacing of the two coupling lines 2531, 2532. If the imaginary part resistance value Xs When the imaginary part resistance Xa of the input impedance of the antenna device 20 cancels each other (Xs == -Xa), the system circuit will obtain a good match. By the design of the coupling feed line 25 of the present invention, we will be directly from the antenna itself. The antenna improves the matching and bandwidth of the antenna. As a result, the present invention is not only A matching circuit of "imaginary impedance" is additionally provided on the circuit board, and the design is simpler, lower in cost, and more space-saving. > In other preferred embodiments of the present invention described below, The components are the same or similar to the previous embodiments, so the same components will be given the same names and numbers directly, and the same components will be given the same names. After the original number, an additional letter will be added to distinguish them and will not be repeated. Referring to Figure 5, a perspective view of a second preferred embodiment of the antenna device 20a for feeding into the present invention is provided. In the second preferred embodiment, the coupling is fed. The antenna device 2A also includes a base plate 21, a signal source 22, a ground plane 23, a radiation conductor 24, and a coupling feed line 25a. A second preferred embodiment of the antenna device 20a of the present invention The difference from the foregoing embodiment is that, as shown in FIG. 5, the first feed line 251a of the feedthrough line 25a is located at the first level 211, and the second feed line 252a is located at the second level. 212. And The coupling element 253a is composed of two short coupling lines 2531a, 2532a respectively located on the first layer 211 and the second layer 212, wherein a short light-bonding line 2531a is connected to the first feeding line 251a, and the other short The cover line 12 1291783 2532a is connected to the second feed line 252a, and the projections of the two short light lines 2531a, 2532a in a direction perpendicular to the first layer 211 at least partially overlap each other. In the second preferred embodiment, the two merging lines 2531a and 2532a are mutually parallel and can be combined in the same size or one by one. Please refer to FIG. 6, which is a perspective perspective view of a second preferred embodiment of the coupled feed antenna device 20b of the present invention. In the third preferred embodiment, the coupled antenna device 2〇b also includes a substrate 21, a signal source 22, a ground plane 23, a radiation conductor 24, and a coupling feed line 25b. . The only difference between the third preferred embodiment of the antenna device 2b of the present invention and the second preferred embodiment is that in the third preferred embodiment of the antenna device 20b of the present invention as shown in FIG. The two short coupling lines 2531b and 2532b of the coupling element 253b have a hollow annular structure. The hollow ring shape may be square, circular or other geometric shapes, and the two coupling lines 2531b, 2532b may be the same or different in size and shape. Referring to Figure 7, a perspective view of a fourth preferred embodiment of the face-fed antenna device of the present invention is shown. The fourth preferred embodiment is different from the foregoing embodiment in that the substrate sounding system of the present invention as shown in FIG. 7 further includes a third layer (not shown), and the coupling element 253c includes a first light-emitting line 2531c on the first layer 211 and connected to the first feed line 251c, a second coupling line 2532c on the second layer 212 and connected to the second feed line 252c, a third coupling line 2533 on the third level, and at least one wire 2534 extending through the first and third layers 13 1291783 for connecting the first and third coupling lines 253lc, 2533, wherein the coupling lines 2531c, The projection ranges of the 2532c, 2533 in a direction perpendicular to the first layer 211 are at least partially overlapped with each other. The shapes of the first and third coupling lines 2531c and 2533 are planar, and the shape of the second coupling line 2532c has multiple bends and a S-like meander shape. Please refer to FIG. 8 , which is a perspective perspective view of a fifth preferred embodiment of the coupled feed antenna device of the present invention. The fifth preferred embodiment is different from the previous embodiment in that the coupling member 253d of the present invention as shown in FIG. 8 includes: a coupling line 2531d having an opening and having a c-type structure, And a short coupling line 2532d received in the opening of the c-type coupling line 253Μ but not in contact therewith, one of the two coupling lines 2531d, 2532d is connected to the first feeding line 251d, and the other coupling line is connected On the second feed line 252d. The above described embodiments are not intended to limit the applicable scope of the invention. The protection of the present invention is based on the technical spirit defined by the content of the patent application of the present invention and the marriage included in the change thereof. It is to be understood that the scope of the present invention is not limited by the spirit and scope of the present invention. [Simple diagram of the diagram] Figure 1 is a schematic diagram of a conventional inverted F antenna device (IFA). 1291783 Figure 2 is a schematic diagram of the impedance equivalent circuit of the conventional Hungarian f shown in Figure 1. 1 Intake of the antenna I is shown in Fig. 2 is a perspective perspective view of the coupled feed embodiment of the present invention. The first embodiment of the line device is a schematic diagram of the equivalent circuit of the infra-red F-type impedance shown in Fig. 3. Figure 5 is a perspective perspective view of a second embodiment of the antenna device of the light and light feeder of the present invention. [Complete figure 6 is the third comparison of the antenna device of the coupled feed of the present invention] FIG. 7 is a perspective view of the fourth preferred embodiment of the coupled feed antenna device of the present invention. Perspective schematic. Figure 8 is a perspective perspective view of a fifth preferred embodiment of the coupled feed antenna device of the present invention. [Description of main component symbols] 10 to antenna device 11 to substrate 12 to radiation conductor m, 122 to contact 13 to ground plane 14 to signal source 15 to direct feed line 16 to signal transmission line 20, 20a, 20b to antenna device 21~ Substrate 211 to first layer 212 to second layer 22 to signal source 23 to ground plane 15 1291783 24 to radiation conductors 241 and 242 to contacts 25, 25a, 25b to _to feed line 25 251a, 251b, 251c, 251d The first feed line 252, 252a, 252b, 252c, 252d to the second feed line 253, 253a, 253b, 253c, 253d to the coupling element 253, 2531a, 2531b, 2531c, 2531d to the coupling line 2532, 2532a, 2532b, 2532c , 2532d ~ coupling line 2533 ~ face line 26 ~ signal transmission line 91 ~ first direction 2534 ~ wire 27 ~ conductive pin 92 ~ second direction