1255589 九、發明說明： 【發明所屬之技術領域】 尤其是有關於 本發明係關於一種數位電視接收天線 一種平面偶極天線。 【先前技術】 、隨著無線通訊的發展，數位化產品之應用亦越來越廣 泛，因此天線的性能便成為影響產品價值的重要關鍵之二 。數位電視是將電視訊號由”類比訊號，，轉換為，，數位訊 號π的電視系統，而目前數位電視地面廣播大致有三套系 統，分別為：美國的 ATSC (Advanced Televisi〇n Systems ’、1255589 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates in particular to a digital television receiving antenna, a planar dipole antenna. [Prior Art] With the development of wireless communication, the application of digital products has become more and more extensive, so the performance of antennas has become an important key factor affecting product value. Digital TV is a television system that converts television signals from "analog signals," to digital signals π. Currently, digital TV terrestrial broadcasting has roughly three systems: ATSC (Advanced Televisi〇n Systems),
Committee)、日本的 isDB-T (Terrestrial Integrated Services Digital Broadcasting)、及歐洲的 dvb_t (Digital Video Broadcasting-Terrestrial)。台灣於民國 8β 年 3 月 31 日 由交通部宣佈採用美規系統，而從90年6月起改制採用歐 洲的DVB-T系統，因為該系統之調變（c〇FDM)標準信號能有 效地解決多重路徑（anti-multipai：h)干擾的問題，同時歐規 系統可以構成單頻廣播網（STN)，對收視不良之地區建立 改善收視轉播站，且歐規系統具有行動接收（m〇bile reception)之特色，而現今數位電視頻道不再褐限於電視 節目之傳輸，更提供了數據廣播（Data Br〇adcasting)等服務 。台灣專利公告號第521,455號”數位電視之平面縮小化天 線π ’其揭示一種利用縮小化天線以接收數位電視訊號的 例子，不過該天線雖可接收數位電視系統，但體積過大， 1255589 ，其在實際運用上之便利性較低。為解決此—問題，我們 ，出-種數位電視天線的創新設計，不僅可產生一操作頻 i涵蓋於台灣數位電視頻道（53〇 —6〇2MHz)，同時本發明天 線結構簡單、製作容易，可與平面物體結合，具有節省空Committee), Japan's isDB-T (Terrestrial Integrated Services Digital Broadcasting), and Europe's dvb_t (Digital Video Broadcasting-Terrestrial). In the Republic of China on March 31, 8β, the Ministry of Communications announced the adoption of the US regulations system, and since June 1990, it has adopted the European DVB-T system because the system's modulation (c〇FDM) standard signal can effectively Solve the problem of multi-path (anti-multipai:h) interference, while the European standard system can constitute a single-frequency broadcast network (STN), improve the ratings broadcast station in the poorly-rated areas, and the European system has mobile reception (m〇bile The characteristics of reception), and today's digital TV channels are no longer limited to the transmission of television programs, but also provide services such as data broadcasting (Data Br〇adcasting). Taiwan Patent Publication No. 521,455 "Digital TV Reduced Antenna π" discloses an example of using a reduced antenna to receive a digital television signal, but the antenna can receive a digital television system, but the volume is too large, 1255589 In terms of practical convenience, in order to solve this problem, we have developed an innovative design of a digital TV antenna that not only produces an operating frequency i, but also covers digital TV channels in Taiwan (53〇-6〇2MHz). The antenna of the invention has the advantages of simple structure, easy manufacture, and can be combined with a planar object, and has the advantage of saving space.
間的優點。 I 【發明内容】 如上所述，本發明之目的在於提供一種數位電視接收 鲁天線的創新設計，不僅可以產生一操作頻寬涵蓋於台灣數 位電視頻道（530-602 MHz)，同時本發明天線結構簡單、製 作各易，可與平面物體結合，具有節省空間的優點。 本七月天線包含·一介質基板、一饋入同轴傳輸線與 一個形狀大致相同之輻射金屬片。二個形狀大致相同之輻 射金屬片彼此間以一預設距離的間距，左右配置，形成於 w貝基板上，各輻射金屬片具有一靠近基板中心之一側邊 鲁，且至少包含一饋入點與複數個狹缝。饋入點大致位於輻 射金屬片中靠近基板中心之側邊附近。複數個狹縫也大致 位於輻射金屬片中靠近基板中心之側邊附近。同軸饋入傳 輸線，具有一中心導體及一外層接地導體，分別連接至各 幸田射i屬片之饋入點上。另外，該二個輻射金屬片由印刷 或蚀刻技術形成於介質基板上。 本發明的實驗結果顯示，本發明之一實施例適用於台 灣數位電視頻道（53〇_6〇2MHz)操作需求，且天線輻射= 型與增盈可符合數位電視接收天線之應用。 1255589 在本項設計中，我們可以藉 度及調整狹縫的數目， 各^射孟屬片的長 當的中心操作頻率及頻寬振長度，而得到適 計，即可產生—鸩於“、達到良好匹配。透過以上設 602廳），间士 ^〜涵蓋台灣數位電視頻道（530 — 5妗本设計為平面式結構，可以附著在物俨表 面，達成iMu優#。 W者在物體表 ，將：3::圖式、實施例之詳細說明及申請專利範圍 ，U及本赉明之其他目的與優點詳述於後。 【實施方式】 第1圖為本發明天線第一實施例i結構圖。本發明天 線弟一實施例1包含一矩形介皙其 φ Μ貝基板11、一饋入同軸傳輸 線12與二個形狀大致相同之_金屬片13。二個形狀大致 相同之輻射金屬片13彼此間以一預設距離d的間距，左右 配置’形成於介質基板n上。該預設距離d —般而言小於 ⑺職。各輻射金屬片13具有一靠近基板11中心之一侧邊 131 ，且至少包含一饋入點14與複數個狹縫15()、151、 U2。饋入點14大致位於輻射金屬片13中靠近基板丨丨中心 之侧邊131附近。複數個狹縫uo、、1S2大致位於 幸田射金屬片13中罪近基板11中心之側邊η 1附近。同軸饋 入傳輸線12，具有一中心導體121及一外層接地導體122 ’分別連接至各輻射金屬片13之饋入點η上。 第2圖是本發明天線第一實施例丨的返回損失實驗量 1255589 測〜果。本實驗選擇下列—曰 之具疮 寸進仃置測：各輻射金屬片13 之長度約為100mm、寬度約 ^ 13 ⑸之寬度約為lmm、長声⑸、 缝150、⑸、⑸於各幸為2〇麵，藉由放置狹 之側邊⑶附近，可嗜短：.:屬片13中靠近基板11中心 摆罢λ ± 』、、、佰短各輻射金屬片13之長度，亦可選 擇置入較少狹縫，但此時 了、 子田对盃屬片13之長度會變大。产 右二個輻射金屬片13之間 工 見度d約為3 mm，可以得到一 二的阻抗匹配與頻寬。介質基板η則採用-介電係數為 4·4之矩形玻纖基板，其長产 為 ▲ 议，、贡度約為203 mm、寬度約為25 mm。茶考第2圖，縱軸表示返回損失值，橫軸表示操作 頻率。由所得實驗結果顯示，在台灣數位電視頻道⑽— 602 MHz)内’天線之返回損失值均高於7·3犯，一般而+ ，滿足實際應用需求。 ϋ 第3圖為本發明天線第一實施例丨於55〇 ΜΗζ之輻射 場型圖。由所得之結果，天線於χ_ζ平面、y_z平面： x-y平面皆具有傳統偶極天線之輻射場型，符合台灣數位 電視頻道(530-602 MHz)的操作需求。 第4圖為本發明天線第一實施例1之增益圖。參考第 4圖，縱軸表示天線增益，橫軸表示操作頻率。由所得之 結果，在台灣數位電視頻道（530-602MHZ)内，天線之增兴 約為1.7 - 2.0 dBi，一般而言，滿足實際應用需求。 1255589 第5圖為本發明天線之第二實施例5結構 天線第二實施例5包含-圓形或橢圓形介質基板51、：铲 入同軸傳輪線12與二個形狀大致相同之輻射金屬片13。二 個形狀大致相同之輻射金屬片13彼 — 間距，六亡鄒罢 預叹距離d的 ^ 形成於該介質基板51上，各_射金^ #The advantage between the two. I. SUMMARY OF THE INVENTION As described above, an object of the present invention is to provide an innovative design of a digital television receiving lure antenna, which can not only generate an operating bandwidth covering a Taiwan digital television channel (530-602 MHz), but also the antenna structure of the present invention. Simple, easy to make, can be combined with flat objects, and has the advantage of saving space. The seventh antenna includes a dielectric substrate, a feed coaxial transmission line, and a radiating metal sheet of substantially the same shape. Two radiating metal sheets having substantially the same shape are arranged at a predetermined distance from each other, and are formed on the substrate, and each of the radiating metal sheets has a side edge close to one of the centers of the substrate, and at least one feed is included. Point and a plurality of slits. The feed point is located approximately in the vicinity of the side of the radiation metal sheet near the center of the substrate. The plurality of slits are also located approximately in the vicinity of the side of the radiant metal sheet near the center of the substrate. The coaxial feed transmission line has a center conductor and an outer ground conductor connected to the feed points of each Koda field. Additionally, the two radiating metal sheets are formed on the dielectric substrate by printing or etching techniques. The experimental results of the present invention show that one embodiment of the present invention is applicable to the operational requirements of the Taiwan digital television channel (53 〇 _6 〇 2 MHz), and the antenna radiation = type and gain can be applied in accordance with the digital television receiving antenna. 1255589 In this design, we can borrow and adjust the number of slits, and the length of the center operating frequency and the length of the bandwidth of each of the Mengsong tablets can be calculated and produced. Achieve a good match. Through the above set of Room 602), the room ^ ~ covers Taiwan's digital TV channel (530 - 5 妗 design is a flat structure, can be attached to the surface of the object, reach iMu excellent #. W in the object table The following is a detailed description of the drawings, the detailed description of the embodiments, and the scope of the claims, and other objects and advantages of the U and the present invention are described in detail below. [Embodiment] FIG. 1 is a first embodiment of the antenna of the present invention. An embodiment 1 of the present invention comprises a rectangular substrate φ a mussel substrate 11, a feed coaxial transmission line 12 and two metal sheets 13 having substantially the same shape. Two substantially identical radiation metal sheets 13 A predetermined distance d is disposed on the dielectric substrate n at a predetermined distance d. The predetermined distance d is generally less than (7). Each of the radiating metal sheets 13 has a side 131 adjacent to the center of the substrate 11. And at least one feed Point 14 and a plurality of slits 15(), 151, U2. The feed point 14 is located substantially in the vicinity of the side 131 of the radiating metal sheet 13 near the center of the substrate. The plurality of slits uo, 1S2 are located substantially in Koda In the sheet 13, the sin is near the side η 1 of the center of the substrate 11. The coaxial feed transmission line 12 has a center conductor 121 and an outer ground conductor 122' connected to the feeding point η of each radiating metal piece 13, respectively. The figure shows the return loss of the first embodiment of the antenna of the present invention. The experimental value of the return loss is 1255589. The experiment selects the following - the flawed test of the sputum: the length of each radiating metal piece 13 is about 100 mm and the width is about 13 (5). The width is about 1mm, the long sound (5), the slit 150, the (5), and the (5) are fortunately 2 sides. By placing the narrow side (3) nearby, it can be short:: the film 13 is close to the center of the substrate 11 λ ± 』, 、, 佰 shorten the length of each radiating metal piece 13, you can also choose to put less slits, but at this time, the length of the sub-field cup 13 will become larger. Produce the right two radiating metals The visibility d between the sheets 13 is about 3 mm, and one or two impedance matching and bandwidth can be obtained. For the substrate η, a rectangular glass substrate with a dielectric constant of 4·4 is used, which has a long-term yield of ▲, a tribute of about 203 mm, and a width of about 25 mm. The tea test is shown in Figure 2, and the vertical axis represents the return. The loss value and the horizontal axis indicate the operating frequency. The experimental results show that the return loss value of the antenna in the Taiwan digital TV channel (10) - 602 MHz is higher than 7.3, generally +, to meet the actual application needs. Figure 3 is a radiation pattern diagram of the first embodiment of the antenna of the present invention at 55 。. As a result, the antenna has a radiation field of a conventional dipole antenna in the χ_ζ plane, y_z plane: xy plane, in accordance with Taiwan. Operational requirements for digital TV channels (530-602 MHz). Fig. 4 is a gain diagram of the first embodiment 1 of the antenna of the present invention. Referring to Fig. 4, the vertical axis represents the antenna gain and the horizontal axis represents the operating frequency. As a result, in the Taiwanese digital TV channel (530-602MHZ), the antenna is about 1.7 - 2.0 dBi, which is generally sufficient for practical applications. 1255589 Fig. 5 is a second embodiment of the antenna of the second embodiment of the present invention. The second embodiment 5 comprises a circular or elliptical dielectric substrate 51, which is shoveled into the coaxial transmission line 12 and two radiating metal sheets of substantially the same shape. 13. Two radiating metal sheets 13 having substantially the same shape are spaced apart from each other, and the distance d is formed on the dielectric substrate 51, and each _ shot gold ^ #
y w第一子金屬片16、一第二子金屬片57盥複數 狹縫150、151、152。第-子金屬片16具有—靠近基 板11中心之第—側邊161及相對於第-側邊161之第二： 邊162，且在第一側4 161附近具有一饋入點14。第二子 金屬片V大致位於介質基板u邊緣，並連接至第_子金屬 —之第一侧邊162，且大致對稱於第一子金屬片之第 二側邊162中心，而與第一子金屬片16大致形成一 τ形結 構。複數個狹縫15〇、⑸、152大致位於第—子金屬片 16之弟一側邊16"付近。同軸饋入傳輸線12，具有一中心 導體121及一外層接地導體⑵，分別連接至各輕射金屬 片13之第一子金屬片16之饋入點14上。第二實施例$比起 第一實施例1具有天線長度降低的優點。 第6圖為本發明天線第二實施例5之返回損失實驗量 測結果。本f驗選擇下収寸進行制：第—子金屬片ι6 之長度、々為分mm、寬度約為25麵，第二子金屬片57之 長度約為90mm、寬度約為5mm，狹缝15〇、i5i 、152 之寬度約為1mm、長度分別约為2〇mm、2〇_、15_ ’藉由放置狹缝 150 ' 151 ' 152 , 10 1255589 子金屬片16之第—側邊161 P付近，可縮短第一子金屬片 之長度-亦可選擇置入較少狹缝，但此時第一子金屬片 16之長度會變大。左右二個輻射金屬片之間距寬度d約 為4mm ’可以得到—良好的阻抗匹配與頻寬。介質基板51 則採用了介，係數為《4之圓形玻纖基板，直徑約為124 m >考第’、圖，縱軸表示返回損失值，橫軸表示操作 頻率。由所得實驗結果顯示，在台灣數位電視頻道(530 — 602 MHz)内，天線之返回損失值均高於錄，一般而言， •亦可符合實際應用需求。 ° 第固及第8圖分別為本發明天線之其他實施例7和 其他實施例8的結構圖。除了基板及第二金屬片之形狀差 異外’本發明天線之其他實施例7和其他實施例8的結構 相似刀別包含—矩形或方形或多邊形介質基板η或^、 —饋入同軸傳輸線12與二個形狀大致相同之韓射金屬片Η •。二個形狀大致相同之輻射金屬片13彼此間以一預設距離 d的間距’左右配置，形成於該介f基板力朗上，各輕 射金屬片13至少包含一第一子金屬片16、一第二子金屬片 77或87與複數個狹縫15〇、⑸、152。第一子金屬片16 具有一靠近基板71或81中心之第一側邊161及相對於第一 側邊161之第二側邊162 ’且在第一側邊i6i㈣具有一 饋入點14。第二子金屬片77或87大致位於介質基板71糾 邊緣，並連接至第一子金屬片16之第二側邊162，且大致 對稱於第一子金屬片16之第二側邊162中心，而與第一子 !255589 金屬片16大致形成一 τ形結構，與第二實施例5相同。複 =個狹縫⑼、m 、1S2大致位於第一子金屬片16之第 ―，邊161附近。其他實施例7的第二子金屬片係具有一 特定寬度，且在靠近二末端處各具有一彎折。其他實施例 :的第二子金屬片係具有一特定寬度，且在靠近二末端處 二具有一截角式彎折。其他實施例7使用二末端各具有一 :折之特定寬度的第二子金屬片，以及其他實施例8使用 二末端各具有一截角式彎折之特定寬度的第二子金屬片， 與第二實施例5有相似的效果。 综合上述的說明，本發明天線的結構簡單，製作成本 低’功能明確，因此本發明天線甚具高度產業應用價值， 足以符合發明之範脅。 惟’以上所述者，僅為本發明之較佳實施例而已，^ 不能以此限定本發明實施之範圍。即大凡依本發 主： 利範圍所作之均等變化與修飾，皆應仍屬本發 : 之範圍内。 風 【圖式簡單說明】 第1圖為本發明天線第一實施例結構圖。 =2圖為本發明天線第—實施例之返回損失實驗結果。 第3圖為本發明天線第一實施例之輻射場型圖。 第4圖為本發明夭線第一實施例之增益圖。 12The first sub-metal piece 16 and the second sub-metal piece 57 of the y w are plural slits 150, 151, and 152. The first sub-metal sheet 16 has a first side 161 near the center of the substrate 11 and a second side 162 opposite the first side 161, and has a feed point 14 near the first side 4 161. The second sub-metal piece V is substantially located at the edge of the dielectric substrate u and is connected to the first side edge 162 of the first sub-metal, and is substantially symmetrical to the center of the second side 162 of the first sub-metal piece, and the first sub- The metal sheet 16 generally forms a τ-shaped structure. The plurality of slits 15A, (5), and 152 are located substantially on the side of the first sub-metal sheet 16 and are close to each other. The coaxial feed transmission line 12 has a center conductor 121 and an outer ground conductor (2) connected to the feed point 14 of the first sub-metal piece 16 of each of the light-emitting metal sheets 13, respectively. The second embodiment has an advantage that the antenna length is reduced as compared with the first embodiment 1. Fig. 6 is a graph showing the experimental results of the return loss of the second embodiment 5 of the antenna of the present invention. The length of the first sub-metal piece ι6, the length of the first sub-metal piece ι6, the width of the sub-metal piece ι6, the width of about 25 faces, the length of the second sub-metal piece 57 is about 90 mm, the width is about 5 mm, the slit 15 〇, i5i, 152 have a width of about 1 mm and a length of about 2 mm, 2 〇 _, 15 _ ' by placing the slit 150 ' 151 ' 152 , 10 1255589 the first side of the metal piece 16 161 P The length of the first sub-metal piece can be shortened - it is also possible to insert less slits, but at this time, the length of the first sub-metal piece 16 becomes larger. The width d between the left and right radiating metal sheets is about 4 mm', which gives good impedance matching and bandwidth. The dielectric substrate 51 is a circular glass substrate having a coefficient of about 4, and has a diameter of about 124 m >gt; and a graph. The vertical axis represents the return loss value, and the horizontal axis represents the operating frequency. The experimental results show that the return loss of the antenna is higher than that recorded in the digital TV channel (530-602 MHz) in Taiwan. In general, it can also meet the actual application requirements. ° 固固和图图图 are structural diagrams of other embodiments 7 and other embodiment 8 of the antenna of the present invention, respectively. In addition to the difference in shape of the substrate and the second metal piece, the structure of the other embodiment 7 of the antenna of the present invention and the other embodiment 8 include a rectangular or square or polygonal dielectric substrate η or ^, - fed into the coaxial transmission line 12 and Two Korean metal sheets with roughly the same shape. The two radiating metal sheets 13 having substantially the same shape are disposed at a predetermined distance d from each other, and are formed on the dielectric substrate, and each of the light-emitting metal sheets 13 includes at least a first sub-metal sheet 16 . A second sub-metal sheet 77 or 87 and a plurality of slits 15A, (5), 152. The first sub-metal sheet 16 has a first side 161 adjacent the center of the substrate 71 or 81 and a second side 162 ' with respect to the first side 161 and has a feed point 14 at the first side i6i (4). The second sub-metal sheet 77 or 87 is located substantially at the edge of the dielectric substrate 71 and is connected to the second side 162 of the first sub-metal sheet 16 and substantially symmetrical to the center of the second side 162 of the first sub-metal sheet 16 . The first sub-!255589 metal piece 16 has a substantially Tau-shaped structure, which is the same as that of the second embodiment 5. The plurality of slits (9), m, and 1S2 are located substantially near the first side 161 of the first sub-metal piece 16. The second sub-metal sheets of the other embodiment 7 have a specific width and each have a bend near the two ends. Other Embodiments: The second sub-metal sheet has a specific width and has a truncated bend near the two ends. Other Embodiment 7 uses a second sub-metal piece having a specific width at one end and a specific width, and the other embodiment 8 uses a second sub-metal piece having a specific width at each of the two ends and having a truncated bending, and The second embodiment 5 has a similar effect. According to the above description, the antenna of the present invention has a simple structure and a low manufacturing cost, and the function is clear. Therefore, the antenna of the present invention has a high industrial application value and is sufficient to meet the scope of the invention. However, the above description is only for the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. That is to say, the average change and modification of the scope of the benefit of the present invention should remain within the scope of this issue: Wind [Simplified illustration of the drawings] Fig. 1 is a structural view showing a first embodiment of the antenna of the present invention. The =2 graph is the result of the return loss experiment of the antenna of the present invention. Figure 3 is a radiation pattern diagram of the first embodiment of the antenna of the present invention. Fig. 4 is a gain diagram of the first embodiment of the twisted wire of the present invention. 12