201208197 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種天線系統’特別是指一種高增益 的迴圈陣列天線系統。 【先前技術】 由於目前的無線網路產品多以輕薄短小方便為訴求， 因此如何設計出符合使用需求的小型天線已成為目前無線 網路產品是否得以有效縮小體積的關鍵技術之一；尤其， 小型天線的设sf對於無線網路產品’例如：無線網路橋接器 (access point，AP)的訊號接收能力以及品質有著最直接的關 係，使得如何在無線網路產品有限的空間配置下，能夠得 到應有的天線性能表現，一直是相關產業首要解決的課題 一種習知的印刷式平板陣列天線常應用於一室外用的 無線網路橋接器（access point，AP),該平板陣列天線具有多 數個天線單元，並操作| 5GHz的無線網路（wlan)或是應 用於802.11a/n的規範，如中華民國專利第M3577i9號，以 及美國專利第7,675,466號所示。 然而，此類型的平板陣列天線為半波長共振的結構， 所以通常需要較大的面積來料。舉例來說操作在5GHz 頻帶的2X2平板陣列天線，其面積約為50公厘(mm)x50公 厘—），以致於使用該天線的無線網路橋接器需要較大的 體積。另-方面，由於平板陣列天線的面積較大，在有限 空間的條件下 將造成其具有天線單元的數量受到限制 201208197 而導致天線增益不佳。 此外’習知平板陣列天線需要系統電路板的接地面作 為天線的接地面’故平板陣列天線一定要設置在系統電路 板的表面上，否則天線無法正常使用。因此，系統電路板 上的電子元件僅能擺設於另一表面，無法有效利用系統電 路板上空間，造成無線網路橋接器體積無法縮小化。 【發明内容】 因此，本發明之目的，即在提供一種體積小、低姿勢 (low-profile)的高增益迴圈陣列天線系統。 本發明之另一目的，在於提供一種具高度指向性的高 增益迴圈陣列天線系統。 於是，本發明高增益迴圈陣列天線系統，包含一天線 裝置及一系統模組。天線裝置包括一基板、一饋入網路及 複數第一迴圈天線。基板具有一第一表面及一相反於第一 表面的第二表面。饋入網路具有一設置於第一表面的微帶 線路及一設置於第二表面且對位於微帶線路的接地導體， 微帶線路具有一供訊號饋入的饋入端及複數電連接饋入端 的第一連接端。第一迴圈天線對應於接地導體的一侧緣間 隔等距地排列，並具有一連接第一連接端且位於第一表面 的第一輻射部及一連接第一輻射部與接地導體且位於第二 表面的第二輻射部，且第一輻射部與第二輻射部相連形成 迴圏。系統模組間隔於基板且與第二表面相向，用以反射 第一迴圈天線的輻射。 較佳地，該微帶線路的該等第一連接端是對位於該接 201208197 地導體的該側緣。 >較佳地，該第-輻射部具有一連接該第一連接端且與 该第一転射部之垂直投影位置相平行間隔的第一輕射段及 一連接該第-輻射段與該第二㈣部且呈迴圈狀的第二輕 射段。 較佳地，該微帶線路還具有複數電連接該饋入端的第 一連接端，该天線裝置還包括複數對應該接地導體的另一 側緣間隔等距地排列且對稱於該第一迴圈天線的第二迴圈 天線，該等第二迴圈天線具有一連接該第二連接端且位於 該第一表面的第二輻射部及一連接該第三輻射部與該接地 導體且位於該第二表面的第四輻射部，且該第三輻射部與 該第四輕射部相連形成迴圈。 較佳地，該微帶線路的該等第二連接端是對位於該接 地導體的該另一側緣。 較佳地，該第三輻射部具有一連接該第二連接端且與 該第四輕射部之垂直投影位置相平行間隔的第三輻射段及 一連接該第三輻射段與該第四輻射部且呈迴圈狀的第四輻 射段。 較佳地’該系統模組為一系統電路板，該系統電路板 具有一相向於該第二表面的接地面且平行間隔於該基板。 該系統模組可做為一反射板，用以反射第一迴圈天線的輻 射。 較佳地’該天線裝置還包括一訊號傳輸線，該訊號傳 輪線具有一由該第二表面延伸至該第一表面且連接該微帶 201208197 線路之饋入端的訊號饋入段。 較佳地，該等第一迴圈天線與$ & # 咏兴。茨寻第二迴圈天線是操 作在5GHz頻帶。 本發明之功效-在於，藉由一饋入網路與該等迴圈天 線電性連接，且藉由增加迴圈天線數量，提升天線的性能 〇 本發明之功效二在於，藉由天線裝置之折疊式迴圈天 線結構與饋入網路的設計，使得天線裝置為較小尺寸的設 汁。又，藉由系統模組的設置，使得天線系統獲得較佳賴 射效率與天線增益，並且天線系統具有高度的指向性，能 應用於室外的無線網路橋接器。 本發明之又一目的在於提供一種具有上述高增益迴圈 陣列天線系統的電子裝置，該電子裝置包含一殼體及設置 於該殼體内的一系統模組及一天線裝置。 該殼體具有一底板及一覆蓋於該底板上的蓋體。 該系統模組設於該底板上並具有一背向該底板的接地 面。 該天線裝置，包括一基板、一饋入網路及複數第一迴 圈天線。該基板設於該系統模組上方，並具有一第一表面 及一相反於該第一表面且面向該系統模組的接地面的第二 表面；該饋入網路具有一設置於該第一表面的微帶線路及 一設置於該第二表面’且對位於該微帶線路的接地導體， 該微帶線路具有一供訊號饋入的饋入端及複數個電連接該 饋入端的第一連接端；該等第一迴圈天線對應於該接地導 201208197 體的一側緣間隔等距地排列，並具有—連接該第一連接端 且位於該第-表面的第一輻射部及一連接該第一輻射部與 該接地導體且位於該第二表面的第二輻射部且該第一輻 射部與該第二輻射部相連形成迴圈。 本發明之功效在於：該基板面積小於或等於該系統模 組面積，確保系統模組能完全反射每個第—迴圈天線的輻 射，且該基板與該系統模組皆可被包覆於電子裝置的殼體 内部》 【實施方式】 有關本發明之則述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本發明被詳細描述之前，要注意的是，在以下的說 明内容中’類似的元件是以相同的編號來表示。 參閱圖1’為本發明高增益迴圈陣列天線系統之第一較 佳實施例。高增益迴圈陣列天線系統1適用於一室外的無 線網路橋接器（access point，AP)。高增益迴圈陣列天線系統 1包含一天線裝置2及一與天線裝置2平行間隔設置的系統 模組3，本實施例的系統模組3為一系統電路板，係具有至 少一接地層、電路元件等，而其作用容後再述。 天線裝置2包括一基板21、一饋入網路（feed network) 22、複數個第一迴圈天線23、複數個第二迴圈天線24以及 —訊號傳輸線25。在本實施例中，該天線裝置2包括兩個 第一迴圈天線23、兩個第二迴圈天線24，形成迴圈陣列天 201208197 線。基板21具有一為絕緣材質（例如：玻璃纖維，fr4)的本 體211以及於本體211相反側的一第一表面212及一第二表 面213。本實施例的迴圈天線為折疊式迴圈天線（f〇ided_1〇〇p antenna) ’該等第一迴圈天線23與該等第二迴圈天線24形 成2x2陣列結構。值得注意的是，本發明可為印刷電路板 (printed circuit board)天線設計，利用折曼式迴圈陣列天線 取代習知的平板陣列天線（patch antenna array)。其中，該等 第一迴圈天線23與該等第二迴圈天線24為全波長迴圈天 線（one-wavelength loop)，天線為平衡式結構（balanced structure) ’具有高增益輻射場型特性。另外，比起傳統平 板陣列天線設計，本發明之折聲式迴圈天線能有效縮小整 體陣列天線面積，同時保有平板天線輻射特性的優點。 參閱圖2與圖3 ’饋入網路（feed network)22係指由訊 號收發源至迴圈陣列天線間的饋送信號的功率分配網路， 其係用以傳輸並控制該等迴圈天線23、24饋入訊號之振幅 及相位。該饋入網路22具有一設置於第一表面212的微帶 線路（micro-strip line) 221及一設置於第二表面213且對位 於微帶線路221的接地導體222，其中，接地導體222是由 基板21之本體211約位於中心線的一側邊水平橫向地延伸 至另一側邊。微帶線路221具有一中心段261、二分別連接 於中心段261兩端且呈倒T形的配接段262，以及一設於中 心段261中間上且供訊號饋入的饋入端263(其位於饋入網 路的幾何中心點位置）、且各配接段262縱向的兩端為一第 一連接端264及一第二連接端265，且由圖2可知饋入端 201208197 263將訊號傳輸至第一連接端264及第二連接端265。在本 實施例中’中心段261為線寬較窄的微帶線，其阻抗為1〇〇 Ω，而配接段262為線寬較寬的微帶線，其阻抗為5〇Ω， 但本發明不以此為限，其亦可配合各迴圈天線23、24的操 作頻帶做調整。第一連接端264連接第一迴圈天線23，且 對位於接地導體222的一側緣223 ;第二連接端265連接第 二迴圈天線24，且對位於接地導體222的另一側緣224。 參閱圖2與圖4，該等第一迴圈天線23沿接地導體 222的側緣223間隔等距排列。第一迴圈天線23具有一連 接第一連接端264且位於第一表面212的第一輻射部231 及一連接第一輻射部231與接地導體222且位於第二表面 213的第二輻射部232，其中第一輻射部231與第二輻射部 232透過基板21的貫孔（圖未示）相連接形成迴圈。第一輻射 部231具有一連接第一連接端264且與第二輻射部232之 垂直技影位置相平行間隔的第一輕射段233及一連接第一 輻射段233與第二輻射部232且呈迴圈狀的第二輻射段234 在本貫施例中，第一迴圈天線23的長度對應5GHz頻帶 的波長’故第-迴圈天線23操作於5GHz頻帶且為全波長 迴圈天線’但第-迴圈天線23所操作的頻帶不以本實施例 所舉例為限。 參閱圖2與圖5，該等第二迴圈天線24沿接地導體 222的側緣224間隔等距排列且以接地導體222為軸心對稱 於第-迴圈天線23’第二迴圈天線24具有一連接第二連接 端265且位於第一表面212的第三輻射部241及一連接第 10 201208197 4射部241與接地導體222且位於第二表面2i3的第四 車田射部242 ’纟中第三輕射部241與第四輻射部242透過基 板21的貫孔（圖未示）相連接形成迴圈。第三輻射部242具 有連接第二連接端265且與第四輻射部242之垂直投影 位置相平行間隔的第三輻射段243及-連接第三輻射段243 與第四輻射部242且呈迴圈狀的第四輻射段244。在本實施 例中，第二迴圈天線24的長度對應5GHz頻帶的波長，故 第-迴圈天線24操作於5GHz頻帶且為全波長迴圈天線， 仁第—迴圈天線24所操作的頻帶不以本實施例所舉例為限 。如圖1所示’訊號傳輸線25 置於基板21的第二表面 213且與天線系統丨的訊號收發源（圖未示）相連接，訊號傳 輸線25具有-由第二表面213延伸至第—表面212且連接 微帶線路221之饋入端263的訊號饋入段251。藉由訊號傳 輸線25配置於第二表面213，可減少訊號傳輸線25對於迴 圈天線23、24的影響。 參閱圖6，為本實施例天線裝置2的實際尺寸示意圖。 由圖6可知’天線裝置2之迴圈天線23、24的尺寸約為27 公厘（mm)x45公厘（mm)e因此，天線裝置2相較於習知操 作在同頻帶的2x2平板陣列天線，確實可縮小體積節省不 少空間。須說明，兩第—迴圈天線23以及兩第二迴圈天線 24間存在一間距（s)，且由於本實施例的第一迴圈天線 與第二迴圈天線24操作於5GHz頻帶，所以間距（s)設計在 〇.5 λ (波長）〜1λ間，可獲得較佳的輻射增益。 本發明藉由饋入網路22的線路設計來連接、饋入複數 201208197 個迴圈天線，並使每一個迴圈天線的接收與發射訊號的振 輻（amplitude)與相位（phase)相同，使訊號能量能被有效輻 射出去。本發明迴圈陣列天線結構簡單，使用印刷電路板 製作完成，製作成本低，在相同的無線網路橋接器裝置内 ，比傳統平板陣列天線可增加更多的迴圈陣列天線。 參閱圖1，系統模組3具有一相向於基板21之第二表 面213的接地面31(如：金屬面），接地面31可將天線裝置 2由第二表面213朝向接地面31的輻射反射，而由第一表 面212向外輻射’藉此不但可使天線裝置2具高度指向性 外，亦可提升天線裝置2在單一方向的天線增益（正χ軸方 向）。又’反射面31與第二表面213間存在一間隙（g)，本 實施例的間隙（g)在5.4公厘（mm)獲得較佳的天線增益。此 外’該間隙（g)可作為系統電路板上電子元件擺設之有效空 間利用。 又’相較於習知的平板陣列天線，本發明之迴圈陣列 天線不需要系統電路板的接地面作為天線的接地面，可單 獨正常操作。該系統電路板的接地面在本發明的功能為天 線的反射板（reflector)，可將無系統電路板設計的全波長迴 圈天線的雙向賴射場型（bi_directional radiation)改變為一高 指向性的輻射場型（directi〇nai ra(jiati〇n)，大幅提昇天線增 益值約2.5 dBi。 另外’該基板21面積小於或等於該系統模組3面積， 以確保系統模組3能完全反射每個第一迴圈天線23及第二 迴圈天線24的輻射，且使得該基板21與該系統模組3皆 12 201208197 可被包覆於如圖7所示的一小型化之無線通訊裝置7的殼 體70内部’不失為可將系統電路板整合在單一内藏式橋接 器之天線解決方案。該殼體7〇包含一底板71及一覆蓋於 底板71上的蓋體72 ’系統模組3設置在底板71上，天線 裝置2的基板21相間隔地設置在系統模組3上方。 參閱圖8及圖9 ’為本實施例高增益迴圈陣列天線系統 1的天線增益與輻射效率的量測結果圖。由圖8可知，頻率 操作在4870MHz〜5860MHz間，其返回損失（return loss)皆 低於14dB，即此頻率區間的電壓波比小於j 5，以符合天線 輻射效率的要求。再者，由圖9可知，天線系統丨的天線 增益皆高於9.5dBi，以及輻射效率皆高於65%，故天線系 統1所提供的5GHz頻帶可應用於無線網路橋接器（Ap)。 如圖8所示，本發明第一實施例的14_dB返回損失 (return |0SS)阻抗頻寬約99〇 MHz，涵蓋5 GHz無線區域 ’’周路操作頻帶，非常適合應用在室外的無線網路橋接器裝 置上。 參閱圖ίο，為天線系統i操作在515〇MHz的2 D輻射 %型量測結果圖。參閱圖丨丨，為天線系統i操作在 5490MHz的2_D輻射場型量測結果圖。參閱圖12，為天線 系統1操作在5825MHz的2_D輻射場型量測結果圖。於是 ’由圖10〜圖12可知，藉由天線裝置2與系統模組3的相 互配合，使得天線系統i在丨χ軸方向具有較高的天線増 ;也就疋天線系統1具有高度的指向性，可適用於無線 網路橋接器（ΑΡ)。 13 201208197 參閱圓13,為本較佳實施例的另一變化態樣。此差異 在於，饋入端263非設置在中心段261的中間，而是偏於 中心段261的一側，此設計可使天線系統丨的輻射方向略 為偏移，而應用於不同的環境，但不影響天線系統丨的天 線增益與輻射效率。 參閱圖14及圖15，為本發明高增益迴圈陣列天線系統 之第二較佳實施例。高增益迴圈陣列天線系統4包含一天 線裝置5及一與天線裝置5平行間隔設置的系統模組6，其 中系統模組6的構造與作用如同第一較佳實施例的系統模 組3，故不多加贅述。而天線系統4與第一較佳實施例的天 線系統1的差異在於，天線系統4的天線裝置5具有較多 個迴圈天線23、24。 天線裝置5包含一基板51、一饋入網路52、複數個第 一迴圈天線23、複數個第二迴圈天線24及一訊號傳輸線 25，其中該些迴圈天線23、24與訊號傳輸線25相同於第 一較佳實施例，故不多加贅述。基板51具有一本體5ιι以 及於本體511相反側的一第—表面512及一第二表面513。 如圖14所示，饋入網路52具有一設置於第一表面512 的微帶線路521及-設置於第二表面513且對位於微帶線 路521的接地導體522。其中，接地導體522是由基板51 之本體511約位於中心線的—側邊水平橫向地延伸至另一側 邊。微帶線路521具有一第一中心段561、二連接第一中心 段561兩端且呈十字形的第—配接段562、二分別連接第一 配接段562且在第一中心段561延伸直線上的第二中心段 14 201208197201208197 VI. Description of the Invention: [Technical Field] The present invention relates to an antenna system', particularly to a high gain loop array antenna system. [Prior Art] Since the current wireless network products are mostly demanding in terms of lightness, shortness and convenience, how to design a small antenna that meets the requirements of use has become one of the key technologies for effectively reducing the size of wireless network products; in particular, small The sf of the antenna has the most direct relationship with the wireless network product's, for example, the access capability and quality of the wireless network access point (AP), so that how to obtain the limited space configuration of the wireless network product can be obtained. The performance of the antenna should always be the primary problem solved by the related industry. A conventional printed flat panel array antenna is often applied to an outdoor wireless access point (AP), which has a plurality of antenna array antennas. Antenna unit, and operating | 5 GHz wireless network (wlan) or 802.11a/n specifications, such as the Republic of China Patent No. M3577i9, and US Patent No. 7,675,466. However, this type of planar array antenna is a half-wavelength resonant structure, so a large area of material is usually required. For example, a 2X2 flat panel array antenna operating in the 5 GHz band has an area of about 50 mm (mm) x 50 mm-), so that a wireless network bridge using the antenna requires a large volume. On the other hand, due to the large area of the planar array antenna, the number of antenna elements will be limited under the condition of limited space 201208197, resulting in poor antenna gain. In addition, the conventional flat panel array antenna requires the ground plane of the system board as the ground plane of the antenna. Therefore, the panel array antenna must be placed on the surface of the system board, otherwise the antenna cannot be used normally. Therefore, the electronic components on the system board can only be placed on the other surface, and the space on the system board cannot be effectively utilized, so that the size of the wireless network bridge cannot be reduced. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a low-profile, low-profile, high-gain loop antenna system. Another object of the present invention is to provide a high gain loop array antenna system having high directivity. Thus, the high gain loop array antenna system of the present invention comprises an antenna device and a system module. The antenna device includes a substrate, a feed network, and a plurality of first loop antennas. The substrate has a first surface and a second surface opposite the first surface. The feed network has a microstrip line disposed on the first surface and a ground conductor disposed on the second surface and opposite to the microstrip line. The microstrip line has a feed end for signal feed and a plurality of electrical connection feeds The first connection end of the input. The first loop antennas are equidistantly arranged corresponding to one side edge of the ground conductor, and have a first radiating portion connecting the first connecting end and located on the first surface, and a connecting first radiating portion and the grounding conductor and located at the first The second radiating portion of the two surfaces, and the first radiating portion is connected to the second radiating portion to form a return. The system module is spaced apart from the substrate and faces the second surface to reflect the radiation of the first loop antenna. Preferably, the first connection ends of the microstrip line are opposite to the side edges of the conductors at the 201208197 ground. > Preferably, the first radiating portion has a first light-emitting portion connected to the first connecting end and spaced apart from a vertical projection position of the first radiating portion, and a connecting the first radiating portion and the The second (four) portion and the second light shot segment in the form of a loop. Preferably, the microstrip line further has a plurality of first connection ends electrically connected to the feed end, the antenna device further comprising a plurality of opposite side edges of the corresponding ground conductors arranged equidistantly and symmetrically to the first loop a second loop antenna of the antenna, the second loop antenna having a second radiating portion connected to the second connecting end and located on the first surface, and a connecting the third radiating portion and the grounding conductor and located at the second a fourth radiating portion of the two surfaces, and the third radiating portion is connected to the fourth light projecting portion to form a loop. Preferably, the second terminals of the microstrip line are opposite the other side edge of the ground conductor. Preferably, the third radiating portion has a third radiating portion connected to the second connecting end and spaced apart from the vertical projection position of the fourth light projecting portion, and a third radiating portion and the fourth radiation are connected And a fourth radiant section that is looped. Preferably, the system module is a system circuit board having a ground plane facing the second surface and spaced parallel to the substrate. The system module can be used as a reflector to reflect the radiation of the first loop antenna. Preferably, the antenna device further includes a signal transmission line having a signal feed section extending from the second surface to the first surface and connected to the feed end of the microstrip 201208197 line. Preferably, the first loop antennas are associated with $ &#咏兴. The second loop antenna is operated in the 5 GHz band. The effect of the present invention is that the antenna is electrically connected to the loop antennas by a feed network, and the performance of the antenna is improved by increasing the number of loop antennas. The second function of the present invention is that the antenna device is used. The folded loop antenna structure and the feed network are designed such that the antenna device is of a smaller size. Moreover, by setting the system module, the antenna system obtains better viewing efficiency and antenna gain, and the antenna system has high directivity and can be applied to an outdoor wireless network bridge. It is still another object of the present invention to provide an electronic device having the above-described high gain loop array antenna system, the electronic device comprising a housing and a system module and an antenna device disposed in the housing. The housing has a bottom plate and a cover covering the bottom plate. The system module is disposed on the bottom plate and has a grounding surface facing away from the bottom plate. The antenna device includes a substrate, a feed network, and a plurality of first loop antennas. The substrate is disposed above the system module and has a first surface and a second surface opposite to the first surface and facing the ground plane of the system module; the feed network has a first surface disposed at the first surface a microstrip line on the surface and a ground conductor disposed on the second surface ′ and located on the microstrip line, the microstrip line having a feed end for signal feed and a plurality of first electrically connected to the feed end The first loop antennas are equidistantly arranged corresponding to one side edge of the grounding conductor 201208197 body, and have a first radiating portion and a connection connecting the first connecting end and located at the first surface The first radiating portion and the grounding conductor are located at the second radiating portion of the second surface and the first radiating portion is connected to the second radiating portion to form a loop. The effect of the invention is that the substrate area is less than or equal to the area of the system module, ensuring that the system module can completely reflect the radiation of each of the first loop antennas, and the substrate and the system module can be coated on the electrons. The present invention will be clearly described in the following detailed description of the three preferred embodiments with reference to the drawings. Before the present invention is described in detail, it is to be noted that in the following description, similar elements are denoted by the same reference numerals. Referring to Figure 1', a first preferred embodiment of the high gain loop array antenna system of the present invention is shown. The high gain loop array antenna system 1 is suitable for an outdoor wireless access point (AP). The high gain loop array antenna system 1 includes an antenna device 2 and a system module 3 disposed in parallel with the antenna device 2. The system module 3 of the embodiment is a system circuit board having at least one ground layer and a circuit. Components and the like, and their effects will be described later. The antenna device 2 includes a substrate 21, a feed network 22, a plurality of first loop antennas 23, a plurality of second loop antennas 24, and a signal transmission line 25. In this embodiment, the antenna device 2 includes two first loop antennas 23 and two second loop antennas 24, forming a loop array day 201208197 line. The substrate 21 has a body 211 which is an insulating material (e.g., glass fiber, fr4) and a first surface 212 and a second surface 213 on the opposite side of the body 211. The loop antenna of the present embodiment is a folded loop antenna (f〇ided_1〇〇p antenna). The first loop antennas 23 and the second loop antennas 24 form a 2x2 array structure. It should be noted that the present invention can be designed for a printed circuit board antenna, replacing a conventional patch antenna array with a folded-manner loop array antenna. The first loop antennas 23 and the second loop antennas 24 are one-wavelength loops, and the antenna has a balanced structure with high gain radiation field characteristics. In addition, the floppy loop antenna of the present invention can effectively reduce the area of the entire array antenna while maintaining the radiation characteristics of the panel antenna, compared to the conventional flat panel array antenna design. Referring to FIG. 2 and FIG. 3, a feed network 22 is a power distribution network for transmitting signals between a signal transmission source and a loop array antenna for transmitting and controlling the loop antennas 23 24, the amplitude and phase of the feed signal. The feed network 22 has a micro-strip line 221 disposed on the first surface 212 and a ground conductor 222 disposed on the second surface 213 and opposite to the microstrip line 221, wherein the ground conductor 222 The body 211 of the substrate 21 extends horizontally laterally to the other side on a side of the center line. The microstrip line 221 has a central section 261, two mating sections 262 respectively connected to the ends of the central section 261 and having an inverted T shape, and a feeding end 263 disposed in the middle of the central section 261 for signal feeding ( The two ends of the mating segments 262 are a first connecting end 264 and a second connecting end 265, and the feeding end 201208197 263 signals the signal. The transmission is to the first connection end 264 and the second connection end 265. In the present embodiment, the central segment 261 is a microstrip line having a narrow line width, and its impedance is 1 〇〇Ω, and the mating segment 262 is a microstrip line having a wide line width, and the impedance is 5 〇Ω, but The present invention is not limited thereto, and may be adjusted in accordance with the operating frequency bands of the loop antennas 23 and 24. The first connection end 264 is connected to the first loop antenna 23, and the pair is located at one side edge 223 of the ground conductor 222; the second connection end 265 is connected to the second loop antenna 24, and the pair is located at the other side edge 224 of the ground conductor 222. . Referring to Figures 2 and 4, the first loop antennas 23 are equally spaced along the side edges 223 of the ground conductors 222. The first loop antenna 23 has a first radiating portion 231 connected to the first connecting end 264 and located on the first surface 212, and a second radiating portion 232 connecting the first radiating portion 231 and the ground conductor 222 and located on the second surface 213. The first radiating portion 231 and the second radiating portion 232 are connected to a through hole (not shown) of the substrate 21 to form a loop. The first radiating portion 231 has a first light-emitting portion 233 connected to the first connecting end 264 and spaced apart from the vertical technical position of the second radiating portion 232, and a first radiating portion 233 and a second radiating portion 232. In the present embodiment, the length of the first loop antenna 23 corresponds to the wavelength of the 5 GHz band, so the first-loop antenna 23 operates in the 5 GHz band and is a full-wavelength loop antenna' However, the frequency band in which the first-loop antenna 23 operates is not limited to the example of the embodiment. Referring to FIG. 2 and FIG. 5, the second loop antennas 24 are equally spaced along the side edges 224 of the ground conductor 222 and are symmetric with respect to the ground loop conductor 222 as the second loop antenna 24 of the first loop antenna 23'. The third radiating portion 241 is connected to the first connecting portion 265 and located on the first surface 212, and a fourth vehicle field portion 242' is connected to the second surface 2i3 and the grounding conductor 222. The third light-emitting portion 241 and the fourth radiation portion 242 are connected to a through hole (not shown) of the substrate 21 to form a loop. The third radiating portion 242 has a third radiating section 243 that is connected to the second connecting end 265 and spaced apart from the vertical projection position of the fourth radiating portion 242, and - connects the third radiating section 243 and the fourth radiating section 242 and is in a loop A fourth radiant section 244. In the present embodiment, the length of the second loop antenna 24 corresponds to the wavelength of the 5 GHz band, so the first loop antenna 24 operates in the 5 GHz band and is a full-wavelength loop antenna, and the band operated by the Penta-loop antenna 24 It is not limited to the examples in this embodiment. As shown in FIG. 1 , the signal transmission line 25 is disposed on the second surface 213 of the substrate 21 and is connected to a signal transmission source (not shown) of the antenna system ,. The signal transmission line 25 has a second surface 213 extending to the first surface. 212 and connected to the signal feeding section 251 of the feeding end 263 of the microstrip line 221. By arranging the signal transmission line 25 on the second surface 213, the influence of the signal transmission line 25 on the loop antennas 23, 24 can be reduced. Referring to FIG. 6, a schematic diagram of actual dimensions of the antenna device 2 of the present embodiment is shown. As can be seen from Fig. 6, the size of the loop antennas 23, 24 of the antenna device 2 is about 27 mm (mm) x 45 mm (mm). Therefore, the antenna device 2 is operated in the same frequency band as the 2x2 flat panel array. The antenna can really reduce the size and save a lot of space. It should be noted that there is a spacing (s) between the two first-loop antennas 23 and the two second loop antennas 24, and since the first loop antenna and the second loop antenna 24 of the present embodiment operate in the 5 GHz band, The pitch (s) is designed to achieve a better radiation gain between 〇.5 λ (wavelength) ~1λ. The present invention connects and feeds a plurality of 201208197 loop antennas by the circuit design of the feed network 22, and causes each loop antenna to receive and emit the same amplitude and phase of the signal. Signal energy can be effectively radiated out. The loop antenna of the present invention has a simple structure, is completed by using a printed circuit board, and has low manufacturing cost. In the same wireless network bridge device, more loop array antennas can be added than the conventional flat panel array antenna. Referring to FIG. 1, the system module 3 has a ground plane 31 (eg, a metal surface) facing the second surface 213 of the substrate 21. The ground plane 31 can reflect the radiation of the antenna device 2 from the second surface 213 toward the ground plane 31. And radiating outward from the first surface 212, thereby not only making the antenna device 2 highly directional, but also improving the antenna gain (positive axis direction) of the antenna device 2 in a single direction. Further, there is a gap (g) between the reflecting surface 31 and the second surface 213, and the gap (g) of the present embodiment obtains a better antenna gain at 5.4 mm. In addition, the gap (g) can be used as an effective space for electronic components on the system board. Further, the loop array antenna of the present invention does not require the ground plane of the system board as the ground plane of the antenna as compared with the conventional flat panel array antenna, and can be operated normally alone. The ground plane of the system board in the present invention is a reflector of the antenna, which can change the bi-directional radiation of the full-wavelength loop antenna without the system board design into a high directivity type. The radiation field type (directi〇nai ra(jiati〇n) greatly increases the antenna gain value by about 2.5 dBi. In addition, the area of the substrate 21 is less than or equal to the area of the system module 3 to ensure that the system module 3 can completely reflect each The radiation of the first loop antenna 23 and the second loop antenna 24, and the substrate 21 and the system module 3 are 12 201208197 can be wrapped in a miniaturized wireless communication device 7 as shown in FIG. The interior of the housing 70 is an antenna solution that can integrate the system board into a single built-in bridge. The housing 7 includes a bottom plate 71 and a cover 72 that covers the bottom plate 71. System module 3 is provided. On the bottom plate 71, the substrates 21 of the antenna device 2 are spaced apart above the system module 3. Referring to Figures 8 and 9 'the measurement of the antenna gain and radiation efficiency of the high gain loop array antenna system 1 of the present embodiment Result graph As can be seen from Fig. 8, the frequency operation is between 4870MHz and 5860MHz, and the return loss is less than 14dB, that is, the voltage wave ratio of this frequency interval is less than j 5 to meet the antenna radiation efficiency requirement. As can be seen from Fig. 9, the antenna gain of the antenna system is higher than 9.5 dBi, and the radiation efficiency is higher than 65%, so the 5 GHz band provided by the antenna system 1 can be applied to the wireless network bridge (Ap). It is shown that the 14_dB return loss (return | 0SS) impedance bandwidth of the first embodiment of the present invention is about 99 〇 MHz, covering the 5 GHz wireless area ''circumference operating band, which is very suitable for use in an outdoor wireless network bridge device. Refer to Figure ίο, for the antenna system i operating at 515 〇 2D radiation type measurement results. See Figure 丨丨, for the antenna system i operating at 5490MHz 2_D radiation field measurement results. See Figure 12 It is a 2D radiation field type measurement result diagram of the antenna system 1 operating at 5825 MHz. Thus, it can be seen from FIG. 10 to FIG. 12 that the antenna system 2 is in the x-axis by the cooperation of the antenna device 2 and the system module 3. High antenna in the direction増In other words, the antenna system 1 has a high degree of directivity and can be applied to a wireless network bridge (ΑΡ). 13 201208197 Refer to the circle 13, which is another variation of the preferred embodiment. The difference is that the feed is The end 263 is not disposed in the middle of the central segment 261, but is biased to the side of the central segment 261. This design can slightly offset the radiation direction of the antenna system and be applied to different environments without affecting the antenna system. Antenna gain and radiation efficiency. Referring to Figures 14 and 15, a second preferred embodiment of the high gain loop array antenna system of the present invention is shown. The high gain loop array antenna system 4 includes an antenna device 5 and a system module 6 disposed in parallel with the antenna device 5. The system module 6 is configured and functions as the system module 3 of the first preferred embodiment. Therefore, do not add more details. The difference between the antenna system 4 and the antenna system 1 of the first preferred embodiment is that the antenna device 5 of the antenna system 4 has a plurality of loop antennas 23, 24. The antenna device 5 includes a substrate 51, a feed network 52, a plurality of first loop antennas 23, a plurality of second loop antennas 24, and a signal transmission line 25, wherein the loop antennas 23, 24 and the signal transmission lines 25 is the same as the first preferred embodiment, so it will not be described again. The substrate 51 has a body 5 ι and a first surface 512 and a second surface 513 on opposite sides of the body 511. As shown in FIG. 14, the feed network 52 has a microstrip line 521 disposed on the first surface 512 and a ground conductor 522 disposed on the second surface 513 and opposite the microstrip line 521. The grounding conductor 522 is horizontally extended laterally to the other side by the body 511 of the substrate 51 about the center line. The microstrip line 521 has a first central section 561, two first mating sections 562 connecting the ends of the first central section 561 and having a cross shape, and two connected to the first mating section 562 and extending in the first central section 561. Second central segment on the line 14 201208197
563 ’以及連接第二中心段563且呈倒τ形的第二配接段 5 64。又’微帶線路521還具有一位於第一中心段5 61中間 且與§fl说傳輸線2 5連接的饋入端5 6 5，以及複數設於第一 配接段562與第二配接段564縱向兩端的第一連接端566 及第二連接端567，且由圖14可知饋入端565電連接各第 一連接知566及第二連接端567。再者，各第一連接端566 連接各第一迴圈天線23，且該等第一連接端566是對位於 接地導體522的一側緣523 ;各第二連接端567連接第二迴 圈天線24，且該等第二連接端567是對位於接地導體522 的另一側緣524，因此，該些第一迴圈天線23與第二迴圈 天線24是彼此相對稱設置。 由本實施例可知，迴圈天線23、24的數量能夠藉由饋 入網路52的設計而增加，並藉此增加天線裝置5的天線增 益。而天線裝置5的其他結構與功效相同於第一較佳實施 例的天線裝置2，故在此不多加贅述。 閱圖16及圖π，為本發明高增益迴圈陣列天線系統 之第三較佳實施例。高增益迴圈陣列天線系統7包含一天 線楚置8及-與天線裝置8平行間隔設置的系統模組9,其 :系統模，组9的構造與作用如同第—較佳實施例的系統模 3故不多加贅述。而天線系統7與第—較佳實施例的天 、、系統1的差異在於，天線系統7的天線裝置8僅設有第 —迴圏天線23。 天線裝置8包含 一迴圈天線23及—563' and a second mating segment 5 64 connected to the second central segment 563 and having an inverted τ shape. Further, the microstrip line 521 further has a feed end 5 6 5 located in the middle of the first center section 5 61 and connected to the transmission line 25, and a plurality of the first mating section 562 and the second mating section. The first connecting end 566 and the second connecting end 567 of the longitudinal ends of the 564 are connected, and the feeding end 565 is electrically connected to the first connecting end 566 and the second connecting end 567. Furthermore, each of the first connecting ends 566 is connected to each of the first loop antennas 23, and the first connecting ends 566 are opposite to the one side edge 523 of the grounding conductor 522; the second connecting ends 567 are connected to the second loop antenna. 24, and the second connecting ends 567 are opposite to the other side edge 524 of the grounding conductor 522. Therefore, the first loop antennas 23 and the second loop antennas 24 are disposed symmetrically with each other. As can be seen from the present embodiment, the number of loop antennas 23, 24 can be increased by the design of the feed network 52, thereby increasing the antenna gain of the antenna device 5. The other structure and function of the antenna device 5 are the same as those of the antenna device 2 of the first preferred embodiment, and therefore will not be further described herein. Referring to Figure 16 and Figure π, a third preferred embodiment of the high gain loop array antenna system of the present invention is shown. The high gain loop array antenna system 7 includes an antenna module 8 and a system module 9 disposed in parallel with the antenna device 8. The system module, the configuration of the group 9 and the system mode of the first preferred embodiment 3 Therefore, do not add more details. The difference between the antenna system 7 and the system of the first preferred embodiment and the system 1 is that the antenna device 8 of the antenna system 7 is provided with only the first-return antenna 23. The antenna device 8 includes a loop antenna 23 and
一饋入網路82、複數個第 汛號傳輸線（圖未示），其中第一迴圈天 15 201208197 線23與訊號傳輸線相同於第一較佳實施例，故不多加贅述 。基板81具有一本體811以及於本體811相反側的一第一 表面812及一第二表面813。 如圖16所示，饋入網路82具有一設置於第一表面812 的微帶線路821及一設置於第二表面813且對位於微帶線 路821的接地導體822。其中’接地導體822是由基板81 之本體811的一側邊水平橫向地延伸至另一側邊。微帶線路 821具有一中心段861、一設置於中心段861 —側且與一訊 號傳輸線（圖未示）連接的饋入端862，以及複數間隔地設置 於中心段861上的連接端863。該等第一迴圈天線23分別籲 連接於連接端863，而第一迴圈天線23的其他敘述與第一 較佳實施例相同，故不多加贅述。綜上所述，藉由天線裝 置2、5、8之迴圈天線23、24與饋入網路22、52、82的 设计，使得天線裝置2、5、8可為較小尺寸的設計。又， 藉由系統模組3、6、9的設置’使得天線系統1、4、7獲 得較佳輕射效率與天線增益，並且天線系統1、4、7具有 高度的指向性，能應用於室外的無線網路橋接器，故確實 能達成本發明之目的。 鲁 惟以上所述者’僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋一立體圖，說明本發明高增益迴圈陣列天線系 16 201208197 統的第一較佳實施例； 圖2是一平面示意圖，說明該天線系統的天線裝置； 圖3是一平面示意圖，以另一面向說明該天線裝置； 圖4是一示意圖，說明該天線裝置的第一迴圈天線； 圖5是一示意圖，說明該天線裝置的第二迴圈天線； 圖6是一尺寸示意圖，說明該天線裝置各構件的尺寸 9 圖7是一示意圖，說明該天線系統設置於一電子裝置 的殼體中的態樣； 圖8是一量測結果圖，說明該天線系統的返回損失； 圖9是一量測結果圖，說明該天線系統的天線增益及 輕射效率； 圖1 〇是一 2-D輻射場型量測結果圖，說明該天線系統 操作在5150MHz ; 圖11是一 2-D輻射場型量測結果圖，說明該天線系統 操作在5490MHz ; 圖12是一 2-D輻射場型量測結果圖，說明該天線系統 操作在5825MHz ; 圖13是一平面示意圖’說明該天線裝置之饋入端的位 置不同； 圖14是一平面示意圖，說明本發明高增益迴圈陣列天 線系統的第二較佳實施例 圖15是一立體圖，說明該天線系統； 圖16是一平面示意圖，說明本發明高增益迴圈陣列天 17 201208197 線系統的第三較佳實施例；及 圖17是一立體圖，說明該天線系統。A feed network 82 and a plurality of transmission lines (not shown), wherein the first loop 15 201208197 line 23 is the same as the signal transmission line in the first preferred embodiment, so no further description is provided. The substrate 81 has a body 811 and a first surface 812 and a second surface 813 on opposite sides of the body 811. As shown in FIG. 16, the feed network 82 has a microstrip line 821 disposed on the first surface 812 and a ground conductor 822 disposed on the second surface 813 and opposite the microstrip line 821. Wherein the ground conductor 822 is horizontally extended laterally to the other side by one side of the body 811 of the substrate 81. The microstrip line 821 has a central section 861, a feed end 862 disposed on the side of the central section 861 and connected to a signal transmission line (not shown), and a connection end 863 disposed at a plurality of intervals on the central section 861. The first loop antennas 23 are respectively connected to the connection end 863, and the other descriptions of the first loop antenna 23 are the same as those of the first preferred embodiment, and therefore will not be described again. In summary, the antenna devices 2, 5, 8 can be of a smaller size design by the design of the loop antennas 23, 24 of the antenna devices 2, 5, 8 and the feed networks 22, 52, 82. Moreover, by the setting of the system modules 3, 6, 9 'the antenna systems 1, 4, 7 obtain better light efficiency and antenna gain, and the antenna systems 1, 4, 7 have high directivity, can be applied The outdoor wireless network bridge can indeed achieve the object of the present invention. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention. All remain within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first preferred embodiment of a high gain loop array antenna system 16 201208197 of the present invention; FIG. 2 is a schematic plan view showing an antenna device of the antenna system; Figure 1 is a schematic diagram showing the first loop antenna of the antenna device; Figure 5 is a schematic diagram showing the second loop antenna of the antenna device; Figure 6 is a schematic view of the antenna device; Is a size diagram illustrating the dimensions of the components of the antenna device. FIG. 7 is a schematic view showing the antenna system in a housing of an electronic device; FIG. 8 is a measurement result diagram illustrating the antenna system. Figure 9 is a measurement result showing the antenna gain and light efficiency of the antenna system; Figure 1 is a 2-D radiation field measurement result, indicating that the antenna system operates at 5150 MHz; 11 is a 2-D radiation field type measurement result diagram, indicating that the antenna system operates at 5490 MHz; Figure 12 is a 2-D radiation field type measurement result diagram illustrating that the antenna system operates at 5825 MHz; Figure 13 is a flat FIG. 14 is a plan view showing a second preferred embodiment of the high gain loop array antenna system of the present invention. FIG. 15 is a perspective view showing the antenna system; FIG. Is a plan view showing a third preferred embodiment of the high gain loop array day 17 201208197 line system of the present invention; and FIG. 17 is a perspective view illustrating the antenna system.
18 20120819718 201208197
【主要元件符號說明】 1 ..........天線系統 2 ..........天線裝置 21 .........基板 211……本體 212 .......第一表面 213 .......第二表面 22 .........饋入網路 221 .......微帶線路 222……接地導體 223 .......側緣 242 .......第四輻射部 243 .......第三輻射段 244 .......第四輻射段 25.........訊號傳輸線 251 .......訊號饋入段 3 ..........系統模組 31.........接地面 4 ..........天線系統 5 ..........天線裝置 51.........基板 224 ···. …·側緣 261 ··· …·中心段 262 ··· •…配接段 263 …. ----饋入& 264 ···. …·第一連接端 265 ··· …第二連接端 23…… …·第一迴圈天線 231 ··· …·第一輻射部 232… •…第二輻射部 233… •…第一輻射段 234… •…第二輻射段 24…… •…第二迴圈天線 241 ··· •…第—輻射部 511 .......本體 512 .......第一表面 513 .......第二表面 52.........饋入網路 521 .......微帶線路 522……接地導體 523 .......側緣 524 .......側緣 561 .......第一中心段 562 .......第一配接段 563 .......第二中心段 564 .......第二配接段 565 .......饋入端 19 201208197 566 — …第一連接端 82…… …·饋入網路 567 ··.. …第二連接端 821 ··· •…微帶線路 6 ....... …系統模組 822… •…接地導體 7 ....... •…天線系統 861… …·中心段 8 ....... …·天線裝置 862… 饋入端 81…… …基板 863… •…連接端 811… •…本體 9…… •…系統模組 812… —第 表面 S…… …·間距 813… •…第二表面 g ...... …·間隙[Description of main component symbols] 1 .......... Antenna system 2 ..... Antenna device 21 ......... Substrate 211 ... Body 212 .. ..... first surface 213 .... second surface 22 ... ... fed into the network 221 .... microstrip line 222 ... grounding conductor 223 . . side edge 242 .... fourth radiation portion 243 .... third radiation segment 244 .... fourth radiation segment 25 .... ..... signal transmission line 251 .... signal feed section 3 .......... system module 31 ... ... ground plane 4 .... ...... Antenna system 5 ..... Antenna device 51 ......... Substrate 224 ······ Side edge 261 ·····Center segment 262 ··· •... Adapter section 263 .... ----Feed & 264 ····....The first connection end 265 ···...the second connection end 23...the first loop antenna 231 ·····the first radiating portion 232...•...the second radiating portion 233...the first radiating portion 234...the second radiating portion 24...the second loop antenna 241··· - Radiation section 511 . . . body 512 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...... With line 522 ... grounding conductor 523 .... side edge 524 .... side edge 561 .... first central segment 562 .... first match Connecting section 563 . . . second central section 564 . . . second mating section 565 . . . feeding end 19 201208197 566 — ... first connecting end 82 ... ...·Feed in network 567 ··.....Second connection 821 ··· •...Microstrip line 6 .............System module 822... •...Ground conductor 7 ...... • Antenna system 861...·Center segment 8............ Antenna device 862... Feeding terminal 81... ...substrate 863... •...connecting end 811... •...body 9... •...system Module 812... - surface S... ... spacing 813... • ... second surface g ... ... gap
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