1323530 i * 九、發明說明： ··【發明所屬之技術領域】 本發明係有關於一種偶極天線，特別是一種可應用於 接收數位電視之偶極天線。 【先前技術】 近年來’隨著科技的日新月異，數位化生活已逐漸融1323530 i * IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a dipole antenna, and more particularly to a dipole antenna that can be applied to a digital television. [Prior technology] In recent years, with the rapid development of science and technology, digital life has gradually melted
入人們的生活中，而數位電視也是其中的一環，不論是固 定式或者是行動式的數位電視，都需要數位電視接收天線 ’對於仃動式數位電視而纟，在汽車上的應用是相當普遍 的因此車用數位電視接收天線理所當然非常的重要。 為知的技術可知 为又数伹电視接收天線，人夕定採 用單極天線的方式，如台灣專利公告第廳馳號，其揭 :數位電視用之汽車天線，由於結構較為複雜，且體積 壞二Π如應用於汽車上，勢必容易因碰撞而造成損 mu 明提出—種新的天線設計，即是以簡單的偶 極天線達成數位電視接# 且又佔㈣丨的’由於體積小、製作容易 金屬^^ 此可附著在汽車之擔風玻璃上或是非 '屬之表面上’不會破壞汽車的美觀，也因此 的貫際應用價值。 八有相田间 5 1323530 【發明内容】 本發明之目的為提出一種創新的數位電視接收偶極天 線。又δ十，由於數位電視不論在行動裝置、家用電視或者是 車用電視上都日漸普及，儼然成為人們在數位化生活中， 相當重要的’因此本天線設計提出一種有別於傳統偶 極天線，同時可應用於一般車用之數位電視接收天線。 本發月之數位電視接收偶極天線一實施例包含：一微 波基板、一第一輻射部、一第二輻射部 '一匹配部及一訊 號饋入元件。該第一輕射部位於該微波基板之一表面上； 該第二輻射部位於該微波基板之一表面上，並朝向該第一 幸田射部之相反方向延伸；該匹配部位於該第一輕射部盘该 第二輕射部之間，具有一第一饋入點及一第二饋入點'、該 戒唬饋入兀件，其-端電氣連接至該第-饋入點，另一端 則電氣連接至該第二饋入點。 ㈣極天線K錄財間，其恰好為全波 模態之電流零點處，所以全波模態不易被激發， 念主要是藉由平移該饋入點，使其位置遠離原先的電 二點’㈣於該匹配部置入一槽孔時，該 成一 LC電路，而咱敕兮而=A 丨J寻欢 。周整忒匹配部可有效改善阻抗匹配， 能夠激發良好的全波模離具 处人丄 離赤宫，… 者，結合半波模態及全波模 達到數位電視所需的操作頻帶。有· 傳f車用數位電視接收天線，本發明之數位電視接收偶極 天線，不但具有小的物理尺 ° 鈿杳交届，知為θ丄 U于、、，σ構間早，貫施上也 相田谷易相虽具有實際應用性及創新性。In the life of people, digital TV is also one of them. Whether it is a fixed or mobile digital TV, digital TV receiving antennas are needed. For swaying digital TVs, the application in automobiles is quite common. Therefore, the digital TV receiver antenna for the car is of course very important. Known technology can be known as a number of TV receiver antennas, the use of monopole antennas, such as the Taiwan Patent Announcement Hall, which revealed: the car antenna for digital TV, due to the complex structure and volume If the second is applied to a car, it is easy to cause damage due to the collision. A new antenna design, that is, a simple dipole antenna to achieve digital TV connection # and (4) ' 'small size, Easy to make metal ^^ This can be attached to the windshield of a car or non-'the surface of the genus' without damaging the aesthetics of the car, and therefore the value of the application.八有相田间 5 1323530 [Invention] The object of the present invention is to propose an innovative digital television receiving dipole antenna. Δ10, because digital TV is becoming more and more popular in mobile devices, home TV or car TV, it has become quite important in digital life. Therefore, this antenna design proposes a different from traditional dipole antenna. At the same time, it can be applied to digital TV receiving antennas for general vehicles. An embodiment of the digital television receiving dipole antenna of the present month comprises: a microwave substrate, a first radiating portion, a second radiating portion 'a matching portion and a signal feeding element. The first light-emitting portion is located on a surface of the microwave substrate; the second radiation portion is located on a surface of the microwave substrate and extends in a direction opposite to the first Koda field; the matching portion is located at the first light Between the second light-emitting portion of the shot plate, there is a first feed point and a second feed point ', the ring feed-in element, the - end of which is electrically connected to the first feed point, and One end is electrically connected to the second feed point. (4) The polar antenna K recording money, which happens to be the zero point of the full-wave mode current, so the full-wave mode is not easy to be excited, and the main reason is to shift the feeding point away from the original electric two points by reading the feeding point. (4) When the matching portion is placed in a slot, the LC circuit is formed, and = = A 丨 J seeks. The 忒 忒 忒 忒 可 可 可 可 可 可 可 可 可 可 可 可 可 可 可 可 可 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒 忒There is a digital television receiving antenna for the vehicle, and the digital television receiving dipole antenna of the present invention not only has a small physical scale, but also has a small physical condition, which is known as θ丄U, ,, and σ interfacially. It is also practical and innovative.
茲配合下歹I〗圖式、音AI cooperate with the 歹I〗 diagram, sound A
將 貫轭例之詳細說明與申請專利範 ;L 明之其他目的與優點詳述於後。 【實施方式】 第1A圖為傳統偶極天線-實施例之上視圖，包含： 一微波基板u、H射部12、―第二轄射部13及一訊 號饋入元件14。該微波基板η具有-表面m，112 ;該第一 輪射部12位於該微波基如之一表自ui上，包含一第一 饋入點121 ’ s亥第二輻射部13位於該微波基板u之一表面 112上，包含一第二饋入點131 ;該訊號饋入元件μ，其 一端電氣連接至該第-饋人點121，另_端則電氣連接至 該第二饋入點131 。 第1Β圖為傳統偶極天線一實施例之側視圖，除包含 第1Α圖中所述元件外，尚包含一導電貫孔15，一端電氣 連接至戎訊號饋入元件14，另一端電氣連接至該第二饋入 點 131 。 第2Α圖為本發明之數位電視接收偶極天線一實施例 之上視圖’包含：一微波基板11、一第一輻射部22、一第 一輻射部23、一匹配部26及一訊號饋入元件14。該微波基 板11具有一表面111，112。該第一輻射部22位於該微波基板 U之一表面111上；該第二輻射部23位於該微波基板η之 一表面112上；該匹配部26位於該第一輻射部22與該第二 幸畐射部23之間，並包含一第一匹配部261及一第二匹配部 263 ;該第一匹配部261位於該微波基板11之一表面ill U23530 上，形狀大致為—長條形，其一端電氣連接至該第一輻射 部22，另一端則為一第一饋入點262，且該第一匹配部 261寬度小於該第—輻射部22之寬度；該第二匹配部263 位於該微波基板U與該第一匹配部261相對之另一表面η 上，形狀大致為一矩形，包含一第二饋入點264及一槽孔 265 ，該槽孔265並相對應於該第一匹配部261 ，同時該 第二饋入點264位於該第二配匹部263之—側邊，且該側 邊電氣連接至該第二輻射部23 ;該訊號饋入元件14，其一 端電氣連接至該第一饋入點262，另一端則電氣連接至該 第二饋入點264。 第2B圖本發明之數位電視接收偶極天線一實施例之 側視圖，除包含第2A圖中所述元件外，尚包含一導電貫 孔15，一端電氣連接至該訊號饋入元件14，另一端電氣連 接至該第二饋入點264。 第3圖為傳統偶極天線之返回損失31及本發明之數位 電視接收偶極天線之返回損失32之實驗量測圖，其中橫軸 代表操作頻率，而縱轴代表返回損失，傳統偶極天線選用 下列尺寸進行實驗量測，該微波基板u之長為23〇mm、寬 為15 mm及厚為0.8 mm ;該第一輻射部12之長為11〇 mm、 寬為14mm ;該第二輻射部長為12〇mm、寬為14mm，而 本發明之數位電視接收偶極天線則選用下列尺寸進行實驗 量測，該微波基板11之長為230 mm、寬為15 mm及厚為 〇.8mm ;該第一輻射部22之長為110mm、寬為14mm ;該 第一輻射部23之長度為88 mm、寬為14 mm ;該第一匹配 1323530 \ 部261之長為32 mm、寬為1.5 mm ;該第二匹配部263之 '長為32mm、寬為14mm ;該槽孔之長為31mm、寬為 ··，從實驗量測圖中可知，在6犯返回損失（3:1 VSWR)定義下，本發明天線之操作頻寬為47〇mHz〜96〇 MHz，可以滿足歐規數位電視頻帶（47〇MHz〜86〇mHz)之需 求，而傳統偶極天線則無法達到需求。 第4圖為本發明之數位電視接收偶極天線輻射場型於 550驗之量測結果，具有良好的全向輕射之特性，適用 零於數位電視訊號接收。 第5圖為本發明之數位電視接收偶極天線輻射場型於 880 MHz之量測結果’同樣具有良好的全向輕射之特性， 也適用於數位電視訊號接收。 第6圖為本發明之數位電視接收偶極天線第一其它實 施例之上視圖，其中該第一匹配部661與該第二匹配部 663之位置互換，該第二匹配部663經由該導電貫孔幻與 #該第二輻射部23電氣連接，其特點為能讓設計上更具有彈 11 ’同時不會影響原本的特性，其它結構則與第2圖中的 實施例相同，不再重述。 第7圖為本發明之數位電視接收偶極天線第二其它實 施例之上視圖，其令該第一韓射部72與該第二輕射部乃位 於同表面Π1上，且該第一匹配部661與該第二匹配部 663之位置互換，其特點—樣是能讓^計上更具有彈性， 同時不影㈣本㈣性’其它結制與第2圖巾 相同，不再重述。 ” 9 第8圖為本發明之數位電視接收偶極天線第三 她例之上視圖，1中 、貫 於同-表面射部22與該第二轄射部83位 該第一匹配部263經由導電貫孔85 二:：部83電氣連接，其特點-樣是能讓設計上更 中的眘 > 同時不影響原本的特性，其它結構則與第2圖 中的實知例相同，不再重述。 —第9A圖為本發明之數位電視接收偶極天線第四其它 2例之上視圖，其中該第一匹配部961及該槽孔⑹位 〜匹配部96之一側邊，其特點為該第一匹 槽孔船之擺放位置不受限於正中央，設計上㈣更^ 同時也不影響其原有的特性，其它結構則與第2圖中的實 施例相同，不再重述。 —第9B目為本發明之數位電視接收偶極天㈣五其它 實把例之上視圖，#中該匹配部97包含兩個槽孔972及該 第二饋入點264，其特點為該槽孔972不受限於一個，同 時，有的特性不會有太大的影響，其它結構則與第2圖中 的實施例相同，不再重述。 第9C圖為本發明之數位電視接收偶極天線第六盆它 實施例之上視圖，#中該槽孔982為一近似擴圓形之結構 ，、其特點為該槽孔982不受限為矩形，可依設計需求變化 成其它形狀，其它結構則與第2圖中的實施例相同，不再 綜合上述的說明，本發明寬頻天線於技術上相當容易 且所需成本便宜，且具高度產業應用價值，足以符合發明 之範疇。 处惟’以上所述者，僅為本發明之較佳實施例而已，當 不=以此限定本發明實施之範圍。即大凡依本發明申請專 利la圍所作之均等變化與修飾，皆應仍屬本發明專利涵蓋 之範圍内。 【圖式簡單說明】 第1A圖為傳統偶極天線一實施例之上視圖。 第1B圖為傳統偶極天線一實施例之側視圖。 第2A圖為本發明數位電視接收偶極天線一實施例之上視 圖。 第2B圖為本發明數位電視接收偶極天線一實施例之側視 圖。 第3圖為傳統偶極天線與本發明數位電視接收偶極天線之 實測返回損失比較圖。 第4圖為本發明之數位電視接收偶極天線一實施例之輻射 場型於550 MHz之量測結果。 第5圖為本發明之數位電視接收偶極天線一實施例之輻射 場型於880 MHz之量測結果。 第ό圖為本發明數位電視接收偶極天線第一其它實施例上 視圖。 第7圖為本發明數位電視接收偶極天線第二其它實施例上 視圖。 第8圖為本發明數位電視接收偶極天線第三其它實施例上 視圖。 第9A圖為本發明數位電視接收偶極天線第四其它實施例-· 上視圖。 -· 第9B圖為本發明數位電視接收偶極天線第五其它實施例 上視圖。 第9C圖為本發明數位電視接收偶極天線第六其它實施例 上視圖。 【元件符號說明】 · 11 微波基板 111, 112 微波基板之一表面 12, 22, 62, 72 第一輻射部 121，262, 662, 762, 962 第一饋入點 13, 23, 73, 83 第二輻射部 131，264, 664, 764, 964 第二饋入點 14 訊號饋入元件 15, 65, 75, 85導電貫孔 籲 26, 66, 76, 96, 97, 98 匹配部 261,661,761,961 第一匹配部 263, 663, 763, 963, 971, 981 第二匹配部 265, 665, 765, 965, 972, 982 槽孔 31 傳統偶極天線之實測返回損失圖 32 本發明數位電視接收偶極天線之實測返回損失 圖 、 12The detailed description of the yoke example and the other purposes and advantages of the patent application are described in detail below. [Embodiment] FIG. 1A is a top view of a conventional dipole antenna-embodiment, comprising: a microwave substrate u, an H-emitting portion 12, a second illuminating portion 13, and a signal feeding element 14. The microwave substrate η has a surface m, 112; the first illuminating portion 12 is located on the microwave substrate, such as a surface from the ui, and includes a first feeding point 121 s. The second radiating portion 13 is located on the microwave substrate. One surface 112 of the u includes a second feed point 131; the signal feed element μ has one end electrically connected to the first feed point 121 and the other end electrically connected to the second feed point 131. . 1 is a side view of an embodiment of a conventional dipole antenna. In addition to the components described in FIG. 1 , a conductive via 15 is also provided. One end is electrically connected to the signal feed element 14 and the other end is electrically connected to The second feed point 131. 2 is a top view of an embodiment of a digital television receiving dipole antenna of the present invention, including: a microwave substrate 11, a first radiating portion 22, a first radiating portion 23, a matching portion 26, and a signal feed. Element 14. The microwave substrate 11 has a surface 111, 112. The first radiating portion 22 is located on a surface 111 of the microwave substrate U; the second radiating portion 23 is located on a surface 112 of the microwave substrate n; the matching portion 26 is located at the first radiating portion 22 and the second The first matching portion 261 is disposed on the surface ill U23530 of the microwave substrate 11 and has a shape of a substantially elongated strip. One end is electrically connected to the first radiating portion 22, and the other end is a first feeding point 262, and the width of the first matching portion 261 is smaller than the width of the first radiating portion 22; the second matching portion 263 is located in the microwave The other surface η of the substrate U opposite to the first matching portion 261 has a substantially rectangular shape and includes a second feeding point 264 and a slot 265 corresponding to the first matching portion. 261, at the same time, the second feeding point 264 is located at a side of the second matching portion 263, and the side is electrically connected to the second radiating portion 23; the signal feeding member 14 is electrically connected to one end thereof. The first feed point 262 is electrically connected to the second feed point 264. 2B is a side view of an embodiment of a digital television receiving dipole antenna of the present invention. In addition to the components described in FIG. 2A, a conductive via 15 is also provided, one end of which is electrically connected to the signal feeding component 14, and One end is electrically connected to the second feed point 264. Figure 3 is an experimental measurement of the return loss 31 of a conventional dipole antenna and the return loss 32 of the digital television receiving dipole antenna of the present invention, wherein the horizontal axis represents the operating frequency and the vertical axis represents the return loss, the conventional dipole antenna The following dimensions were used for the experimental measurement. The length of the microwave substrate u was 23 mm, the width was 15 mm, and the thickness was 0.8 mm. The length of the first radiating portion 12 was 11 mm and the width was 14 mm. The director has a length of 12 mm and a width of 14 mm, and the digital television receiving dipole antenna of the present invention is experimentally measured using the following dimensions: the length of the microwave substrate 11 is 230 mm, the width is 15 mm, and the thickness is 〇.8 mm; The first radiating portion 22 has a length of 110 mm and a width of 14 mm; the first radiating portion 23 has a length of 88 mm and a width of 14 mm; the first matching 1323530 \ portion 261 has a length of 32 mm and a width of 1.5 mm. The second matching portion 263 has a length of 32 mm and a width of 14 mm; the length of the slot is 31 mm and the width is ···, as can be seen from the experimental measurement chart, the return loss is calculated at 6 (3:1 VSWR). The operating bandwidth of the antenna of the present invention is 47〇mHz~96〇MHz, which can meet the European standard digital television band (47〇MH The demand of z~86〇mHz), while the traditional dipole antenna can not meet the demand. Fig. 4 is a measurement result of the radiation field type of the digital television receiving dipole antenna of the present invention in the 550 test, and has the characteristics of good omnidirectional light radiation, and is suitable for receiving by zero digital television signal. Figure 5 is a measurement result of the digital television receiving dipole antenna radiation field type at 880 MHz of the present invention. It also has good omnidirectional light-emitting characteristics, and is also suitable for digital television signal reception. Figure 6 is a top view of the first embodiment of the digital television receiving dipole antenna of the present invention, wherein the first matching portion 661 and the second matching portion 663 are interchanged, and the second matching portion 663 is electrically connected. The hole is electrically connected to the second radiating portion 23, and is characterized in that it can make the design more elastic 11' without affecting the original characteristics, and the other structures are the same as the embodiment in FIG. 2, and will not be repeated. . Figure 7 is a top view of a second embodiment of the digital television receiving dipole antenna of the present invention, wherein the first Korean portion 72 and the second light portion are located on the same surface Π1, and the first matching The position of the portion 661 and the second matching portion 663 are interchanged, and the characteristics thereof are such that the device can be made more flexible, and the other is not the same. (4) The (four) sex is the same as the second towel, and will not be repeated. 9 is a top view of the third embodiment of the digital television receiving dipole antenna of the present invention, wherein the first matching portion 263 passes through the same surface portion 22 and the second urging portion 83. Conductive through-hole 85 two:: part 83 electrical connection, its characteristics - can make the design more careful > at the same time does not affect the original characteristics, other structures are the same as the actual example in Figure 2, no longer Recapitulation - Figure 9A is a top view of the second other two examples of the digital television receiving dipole antenna of the present invention, wherein the first matching portion 961 and the slot (6) bit - one side of the matching portion 96 are characterized by The position of the first slotted boat is not limited to the center, and the design (4) is more than the original characteristics. The other structures are the same as the embodiment in Fig. 2, and are no longer heavy. 9B is a top view of the digital television receiving dipole day (four) five other practical examples of the present invention, wherein the matching portion 97 includes two slots 972 and the second feeding point 264, which is characterized by The slot 972 is not limited to one, and at the same time, some characteristics do not have much influence, and other structures and FIG. 2 The embodiment is the same and will not be repeated. FIG. 9C is a top view of the sixth embodiment of the digital television receiving dipole antenna of the present invention, wherein the slot 982 is an approximately circularly elongated structure, and The slot 982 is not limited to a rectangular shape and can be changed into other shapes according to design requirements. Other structures are the same as those in the embodiment in FIG. 2, and the above description is not integrated. The wideband antenna of the present invention is technically quite easy. And the cost is low, and it has a high industrial application value, which is sufficient for the scope of the invention. The above is only the preferred embodiment of the present invention, and does not limit the scope of implementation of the present invention. That is, the equal changes and modifications made by the patent application of the present invention should remain within the scope of the present invention. [Simplified Schematic] FIG. 1A is a top view of an embodiment of a conventional dipole antenna. 1B is a side view of an embodiment of a conventional dipole antenna. FIG. 2A is a top view of an embodiment of a digital television receiving dipole antenna according to the present invention. FIG. 2B is an implementation of a digital television receiving dipole antenna according to the present invention. A side view of an example. Figure 3 is a comparison of the measured return loss of a conventional dipole antenna and a digital television receiving dipole antenna of the present invention. Fig. 4 is a radiation field type of an embodiment of the digital television receiving dipole antenna of the present invention. The measurement result of 550 MHz. Fig. 5 is a measurement result of the radiation field type of the digital television receiving dipole antenna of the present invention at 880 MHz. The first figure is the first digital television receiving dipole antenna of the present invention. Figure 7 is a top view of a second embodiment of a digital television receiving dipole antenna according to the present invention. Figure 8 is a top view of a third embodiment of a digital television receiving dipole antenna according to the present invention. Inventive Digital Television Receive Dipole Antenna Fourth Other Embodiment - Top View - Figure 9B is a top view of a fifth other embodiment of a digital television receiving dipole antenna of the present invention. Figure 9C is a top view of a sixth embodiment of the digital television receiving dipole antenna of the present invention. [Description of component symbols] · 11 microwave substrate 111, 112 One surface of microwave substrate 12, 22, 62, 72 First radiation part 121, 262, 662, 762, 962 First feeding point 13, 23, 73, 83 Second radiating part 131, 264, 664, 764, 964 Second feeding point 14 Signal feeding element 15, 65, 75, 85 Conductive through hole 26, 66, 76, 96, 97, 98 Matching part 261, 661, 761, 961 First match 263, 663, 763, 963, 971, 981 second matching portion 265, 665, 965, 965, 972, 982 slot 31 measured return loss of the conventional dipole antenna FIG. 32 Actual measurement of the digital television receiving dipole antenna of the present invention Return loss map, 12