1353685 九、發明說明： 【發明所屬之技術領域】 本發明係關於一 置數位電視天線。 種數位電視天線，特別是一種行動裝 【先前技術】 在育訊傳播快速的時代，電視已是人們接收新聞、娱 休閒及貢訊不可或缺的角色。隨著無線通訊的發展， 旦:類比方式傳遞訊號，再經由類比電視將-衫像王現出來’其訊號傳送過程不但易受雜訊干擾，所呈 現的晝面清晰度和穩定度也因此降低許多。相較之下，以 數位方式所傳遞的訊號，不但在晝質上的呈現較佳 也：穩定，更可以提供進一步的多媒體服務，因此，:諸 糸統取代傳統的類比電視系統已成為必然之趨勢， 位!視功能的行動裝置更可預期將具有相丄 I ^ \ ^ 了達到此一目的，如何設計出一結構押嚴、 外型輕薄且容易整合於行動裝置之 4 需要解決的一大問題。 尾視天線，就成為 台灣專利公告號第M325,617號”超寬頻數位 線其揭示一種數位電視天線，雖然該 :延的方式ί縮短外露式天線之高度，但其仍為夕= 、，’並不符合目前天線内藏的趨勢專二 議⑽號行動數位電視接收天線 極天線搭配-可變電容的方式，來達成涵蓋::電::： 5 13536851353685 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a digital television antenna. Digital TV antennas, especially a mobile device [Prior Art] In the era of rapid communication, TV has become an indispensable role for people to receive news, entertainment and entertainment. With the development of wireless communication, the analogy method transmits the signal, and then the analog TV will appear as the king. The signal transmission process is not only susceptible to noise interference, but also reduces the clarity and stability of the picture. a lot of. In contrast, the signal transmitted in digital mode is not only better in enamel appearance: it is stable, and it can provide further multimedia services. Therefore, it has become inevitable that Zhusi will replace the traditional analog TV system. The trend, the position! The function of the mobile device is expected to have a relative I ^ \ ^ to achieve this purpose, how to design a structural bar, thin and easy to integrate into the mobile device 4 need to solve a large problem. The rear view antenna becomes the Taiwan Patent Publication No. M325,617. The ultra-wideband digital line reveals a digital TV antenna. Although the extension method ί shortens the height of the exposed antenna, it is still 夕 = , , ' Does not meet the current trend of antenna built-in (2) mobile digital TV receiver antenna pole antenna with a variable capacitor approach to achieve coverage:: Electricity::: 5 1353685
頻帶的需求，然而其缺點為兮M A Μ 為該可變電容需使用主動電路來 ::电谷值，-方面會增加製作成本，另一方面也會增加 耗電功率’降低行動裝置的使 成本、長裝则㈣磁目前低製作 為解決上述的問題，我們提出—種行動裝置數位電視 天線設計’其可產生寬頻操作頻寬’進而涵蓋台灣 視==2MHZ)及美規 〜862 MHz)之數位電視頻段。同時，本發明天線為― 式天線設計且製作容易，相當適合應用於行動裝置上。 【發明内容】 如上所述，本發明之目的在於提供—種適用於行動裝 數位電視天線設計’其可以涵蓋台灣數位電視頻段及 吳規、歐規之數位電視頻段。 一種行動裝置數位電視天線，包含：一 :質基板可為一行動裝置之系統電路板；—接：：反該： 地面可使用印刷或蝕刻技術形成於該介質基板之一表 ’具有-短路點；一饋入金屬部’該饋入：屬部可使= 刷或蝕刻技術形成於該介質基板之一表面上， yT τ- ι_ ^ m , ，、5亥接地面 :互目重豐屈其1連接至一信號源，另_端為開路… 輕射金屬和該第一輻射金屬部可使用 術形成於該介質基板之-表面上，與該接地面不 = ，其一端與該饋入金屬部具有一第一特定 ^ 疋間距，另一端為 6 I353685 開路；及一第二輻射金屬部，由一支撐介質所支撐，該支 撐介質材質可為空氣、玻纖基板、塑膠材料或陶瓷材料， 位於該第-輕射金屬部之上方，並與該第一輕射金屬部且 有一第二特定間距（一般至少大於2mm，以減少該第一輻 射金屬部與該第二輻射金屬部之互相影響），該第二輻射 金屬部可使用印刷、姓刻或濺鑛技術形成於該支撐介質上 使用一金屬片沖壓或切割製作而成，再依附於該支 芽介質上’其一端㈣—連接金屬線電氣連接至位於 =基板之—表面上之—短路金屬線，該短路金屬線可使用 f7刷或蝕刻技術形成於該介質基板上，其長度至少 ，而其另一端並電氣連接至該接地面之短路點。 在本項發明天線中，該第一輻射金屬部藉由該第一特 =距（一般應小於3mm，以提供足夠之電磁麵合），由The demand for frequency bands, however, has the disadvantage that 兮MA 需 requires active circuits for the variable capacitors:: electrical valleys, which increase the manufacturing cost, and on the other hand increase the power consumption'. The long-term (4) magnetic current low production to solve the above problems, we propose a mobile device digital TV antenna design 'which can generate broadband operating bandwidth' and then cover Taiwan's view == 2MHZ) and US regulations ~ 862 MHz) Digital TV band. At the same time, the antenna of the present invention is designed and designed to be easy to use, and is quite suitable for use in mobile devices. SUMMARY OF THE INVENTION As described above, the object of the present invention is to provide a digital television antenna design suitable for mobile devices. It can cover digital television bands in Taiwan and digital television bands in Wu and Europe. A mobile device digital television antenna comprises: a system substrate which can be a mobile device; a connection:: a reverse: the ground can be formed on the surface of the dielectric substrate by using printing or etching technology. a feed into the metal portion 'the feed: the genus can make = brush or etch technology formed on one surface of the dielectric substrate, yT τ- ι_ ^ m , , 5 Hai ground plane: mutual eyebrows 1 is connected to a signal source, and the other end is an open circuit... The light-emitting metal and the first radiating metal portion can be formed on the surface of the dielectric substrate, and the ground plane is not =, one end thereof and the feed metal The portion has a first specific spacing, and the other end is 6 I353685 open circuit; and a second radiating metal portion supported by a supporting medium made of air, a glass substrate, a plastic material or a ceramic material. Located above the first light-emitting metal portion and having a second specific spacing (generally at least greater than 2 mm) to reduce the interaction between the first radiating metal portion and the second radiating metal portion ), the second The radiant metal portion may be formed on the supporting medium by stamping or cutting using a metal sheet by printing, surname or splashing technique, and then attached to the bud medium, one end (four) - the connecting metal wire is electrically connected to the supporting = On the surface of the substrate - a shorted metal line that can be formed on the dielectric substrate using f7 brushing or etching techniques, at least at its length, and the other end of which is electrically connected to the shorting point of the ground plane. In the antenna of the present invention, the first radiating metal portion is provided by the first characteristic distance (generally should be less than 3 mm to provide sufficient electromagnetic surface area).
Si金^:電絲合共振出其四分之—波長模態（操作 ，、有 =〇〇mhz)，以及該第二輕射金屬部藉由該短路金屬線 有效增加共振路徑長度，共振出其四分之一 操作於約500MHz)。若;^ w古## A 皮長杈〜、（ -輻斯入h 饋入的方式，將造成該第 ’之饋入處在約8〇〇MHz頻帶之電流分布較不 =線在此頻帶之阻抗變化劇烈，因而無法涵蓋 車乂寬#作頻宽。另外’若該第二輕射金屬部 丑路金屬線，將造成該第二輕 人 高’無法產生-操作於約 天線操作镅册土斤人 振Um，因而造成 ' 、法付5台敎位電視㈣及美規、歐規之 7 1353685 數位電視操作頻帶的需求。因此在本項發明 提出在第-_金屬部使用電軸合饋二的方^ ^們 處電流分布均勻，增加高頻操作頻帶、二 貝入 射金屬部使用連接至一短路金 气’二在弟二輕 操作頻帶，因而能在有限的空：中泉效降低低頻 :進而涵蓋台灣數位電視頻段及美規、歐規數位電 【實施方式】 第1圖為本發明天線一實施例1之結構圖’包含.一 介質基板η，· -接地面12，位於該介質基板u之一表面上 ，具有-短路點121 饋人金屬部14，位於該介質基板 11之一表面上，與該接地面12不互相重疊，其一端 -信號源18，另-端為開路；一第一轄射金屬部15，位於 該介質基板11之-表面上，與該接地面12不互相重疊，其 一端與該饋入金屬部14具有一第一特定間距141 ，另一端 為開路；及-第二輕射金屬部17，由—支撐介質13所支撐 ，位於該第一輕射金屬部15之上方，並與該第一輕射金屬 部15具有—第二特定間距171，其-端㈣-連接金屬線 172電氣連接至位於該介質基板21之一表面上之一短路金 屬線16 ’該短路金屬線16長度至少2〇 mm，其另一端並電 氣連接至該接地面12之短路點121。 第2圖為本發明天線一實施例1之返回損失圖。在實 8 施例中選擇下列尺寸進行實驗：一介質 135 mm、寬度約為 長度約為 、寬度約為^ 一接地面12，長度約為12〇咖 是度.乃為80_，位於 一短路點121 ; A 之表面上，具有 . M金屬邛14，其長度約為7〇mm、宽 ^為lmm ’位於該介質基板"之-表面上，的接地： 12不互相重疊，发— /、。亥接地面 ;-第,八“連接至一信號源18，另-端為開路 弟‘射金屬部15，其長度約為14〇聰 設計，其-端寬度約為—，另一端二不^ 位於該介皙其触見度約為10mm， 兗 、土 之一表面上，與該接地面12不互相重聂 笛其一端與該饋人金屬部14具有—第―特定間距⑷，ς 間距⑷約為lmm，另一端為開路；及一第二;; 、’邛17，其長度約為80mm、寬度約為15mm ，由— ，標介質13所支撐’該支稽介質13長度約為8〇咖、完度 約為15mm、高度約為4_，位於該第一輕射金屬部^之 上方」並與該第一輻射金屬部】5具有一第二特定間距Η! ，該第二特定間距171約為4mm，其一端經由一連接金屬 線172電氣連接至位於該介質基板u之一表面上之一短路 金屬線16，該連接金屬線172長度約g4mm、寬度約為^ mm ，忒紐路金屬線16長度約為35 mm、寬度約為丨， 其另一端並電氣連接至該接地面12之短路點121 。由所得 之實驗結果，在3dB返回損失的定義之下，該第一輻射金 屬。卩之共振模態21協同該第二輕射金屬部之共振模態22， 足以涵蓋台灣數位電視頻段及美規、歐規數位電視頻段。 9 1353685 第3圖為本發明天線—實施例i之模擬輕射效率圖。 =例：選擇如上述的尺寸進行模擬。在台灣數位電視 頻又^規、歐規之數位電視頻段，天料射效率約為3〇 十目^因此本發明天線不但符合内藏式及縮小化之天線 =:，同時也符合數位電視天線的輕射效率需求，相 田k。應用於行動裝置以接收數位電視。Si gold ^: the wire resonates with its quarter-wavelength mode (operation, with = 〇〇mhz), and the second light-emitting metal portion effectively increases the length of the resonance path by the short-circuited metal wire, and resonates One quarter of it operates at approximately 500 MHz). If; ^ w古## A skin long 杈~, (-the method of feeding into the h, will cause the current distribution of the 'th' in the band of about 8 〇〇MHz to be less = line in this band The impedance changes drastically, so it can't cover the width of the rut. For the second light metal part, the ugly metal wire will cause the second light person to be 'unable to produce' - operate at about the antenna operation. The Um, which is used by the people, has caused the demand for '5 sets of TVs (4) and 7 1353685 digital TV operating bands of the US and Europe. Therefore, in this invention, it is proposed to use the electric shaft feed in the -_ metal part. The squares of the two squares are evenly distributed, and the high-frequency operating frequency band is increased. The two-incident incident metal portion is connected to a short-circuited gold gas, and the second light-operating frequency band can be used to reduce the low frequency in a limited space: In addition, the digital television band of the United States and the European standard digital television are implemented. [Embodiment] FIG. 1 is a structural diagram of a first embodiment of the antenna of the present invention, including a dielectric substrate η, a ground plane 12, located in the medium. On one surface of the substrate u, with a short circuit point 121 feeding gold The pedestal portion 14 is located on a surface of the dielectric substrate 11 and does not overlap with the ground plane 12, and has one end-signal source 18 and an open end at the other end; a first urging metal portion 15 is located on the dielectric substrate 11. On the surface, the ground plane 12 does not overlap each other, one end of the feed metal portion 14 has a first specific spacing 141, and the other end is an open circuit; and - the second light metal portion 17, supported by the medium 13 is supported above the first light-emitting metal portion 15 and has a second specific spacing 171 with the first light-emitting metal portion 15, and its -terminal (four)-connection metal wire 172 is electrically connected to the dielectric substrate. One of the surfaces 21 is short-circuited with a metal wire 16'. The short-circuited metal wire 16 has a length of at least 2 mm, and the other end thereof is electrically connected to the short-circuit point 121 of the ground plane 12. FIG. 2 is an embodiment 1 of the antenna of the present invention. Return loss map. In the real 8 example, the following dimensions were selected for experiment: a medium of 135 mm, a width of about length, a width of about ^ a ground plane 12, and a length of about 12 〇 is a degree. , located at a short-circuit point 121; on the surface of A, with .M gold邛14, its length is about 7〇mm, width ^1mm 'on the surface of the dielectric substrate", the grounding: 12 do not overlap each other, the hair is / /, the grounding surface; - the first, eight "connection To a signal source 18, the other end is an open-circuited metal part 15 having a length of about 14 〇 设计 design, the width of the end is about - and the other end is not located at the interface. 10mm, on one surface of the earthworm, the ground surface 12 and the grounding surface 12 are not mutually contiguous. The one end of the ground surface 12 and the feeding metal portion 14 have a first-specific spacing (4), the spacing (4) is about 1 mm, and the other end is an open circuit; a second;; '邛17, which has a length of about 80 mm and a width of about 15 mm, is supported by the standard medium 13'. The length of the medium 13 is about 8 〇, the degree of completion is about 15 mm, and the height is about 4_, located above the first light-emitting metal portion ^ and having a second specific spacing Η! with the first radiant metal portion 5, the second specific spacing 171 is about 4 mm, one end of which is connected via a connecting metal The wire 172 is electrically connected to a shorted metal wire 16 on one of the surfaces of the dielectric substrate u, the connecting wire 172 having a length of about g4 mm A width of about ^ mm, 16 New Road, te length of the metal wire is about 35 mm, a width of about Shu, and the other end electrically connected to the ground plane 12 of the short-circuit point 121. From the experimental results obtained, the first radiation metal is defined under the definition of 3 dB return loss. The resonant mode 21 of the 协同 cooperates with the resonant mode 22 of the second light-emitting metal part, which is sufficient to cover the digital television band of Taiwan and the US and European digital television bands. 9 1353685 Fig. 3 is a diagram showing the simulated light-emission efficiency of the antenna of the present invention. = Example: Select the size as described above for simulation. In Taiwan's digital video and audio regulations, the European standard digital TV band, the sky shooting efficiency is about 3 〇 10 mesh ^ Therefore, the antenna of the present invention not only conforms to the built-in and reduced antenna =:, but also meets the digital TV antenna Light shot efficiency requirements, Xiang Tian k. Applied to mobile devices to receive digital televisions.
.一：！圖為本發明天線之一其他實施例4結構圖，包含 w貝基板41 ; 一接地面42，位於該介質基板^之一表 面上’具有一短路點421 ; —饋入厶厘邶μ . 饋入金屬部44，位於該介質 =之-表面上’與該接地面42不互相重疊，其一端連 L號源48，另一端為開路；一第一輻射金屬部45， 立2介質基板41之-表面上，與該接地面42不互相重疊 丄二一端與該饋入金屬部44具有一第一特定間距々々I ，另 =為開路’及一第二輻射金屬部47 ’由一支撐介質汜所 入;^位於4第射金屬部45之上方，並與該第一輻射 = 具有-第二特定間距471，其—端經由 ^線仍電氣連接至位於該介質基板41之一表面上之一短 並^屬該短路金屬線46長度至少2—，其另一端 ^連接至該接地面42之短路點42ι。實施例4與實施 之差別在於，實施例4之饋入金屬部44與該第一輻射 屬於該介f基板41之不同表面上，另外該短路金 /與該接地面42位於該介質基板41之同-表面上。該 *固實她例’其操作原理相同，實施例4亦可得到與實施 例1之相似結果，皆可π罢A，攻 . 白了涵盍台对數位電視頻段及美規、歐 規數位電視頻段之择作册 當的天線結構。 ㈤求’可依貫際需求選擇較適 • 以上說明中所述之實施例僅為說明本發明之原理及其 ^ ’而非限制本發明。因此，習於此技術之人士可在; 這二本1日月之精神對上述實施例進行修改及變化。本發明 之權利乾圍應如後述之申請專利範圍所列。 【圖式簡單說明】 第1圖為本發明天線—實施例結構圖。 第2圖為本發明天線一實施例之量測返回損失圖。 第3圖為本發明天線一實施例之模擬輻射效率圖。 第4圖為本發明天線一其他實施例結構圖。 【主要元件符號說明】 .1 :本發明天線一實施例 n，41 :介質基板 12, 42 接地面 121，421 :短路點 13,43 :支撐介質 14, 44 :饋入金屬部 141，441 :第一特定間距 15, 45 :第一輻射金屬部 16, 46 :短路金屬線 13-53685 161,461 :連接點 17.47 :第二輻射金屬部 171,471 :第二特定間距 172, 472 :連接金屬線 18.48 :信號源 21 ·南頻共振頻帶 22 :低頻共振頻帶 4 :本發明天線一其他實施例.One:! The figure is a structural diagram of another embodiment 4 of the antenna of the present invention, comprising a b-substrate 41; a ground plane 42 on the surface of one of the dielectric substrates Having a short-circuit point 421; - feeding 厶 邶 μ. The metal inlet portion 44 is located on the surface of the medium and does not overlap with the ground plane 42. One end of the metal portion 44 is connected to the L source 48 and the other end is an open circuit. A first radiating metal portion 45 is formed on the dielectric substrate 41. - on the surface, the ground plane 42 does not overlap each other. The second end has a first specific spacing 々々I with the feed metal portion 44, and the other is an open circuit 'and a second radiating metal portion 47' is supported by a support The medium is placed above the fourth metal portion 45 and is electrically connected to the surface of one of the dielectric substrates 41 via the first radiation. One of the short-circuited metal wires 46 has a length of at least 2, and the other end thereof is connected to the short-circuit point 42ι of the ground plane 42. The difference between the embodiment 4 and the implementation is that the feed metal portion 44 of the embodiment 4 and the first radiation belong to different surfaces of the dielectric substrate 41, and the short-circuit gold/the ground plane 42 is located on the dielectric substrate 41. Same as - on the surface. The *solids her case's operation principle is the same, and the fourth embodiment can also obtain similar results as the first embodiment, all of which can be π strike A, attack. White 盍 对 对 对 对 对 电视 电视 电视 电视 电视 对 对 对 对 对 对The antenna structure of the TV band is chosen. (V) Seeking to be able to select according to the requirements of the present invention. The embodiments described in the above description are merely illustrative of the principles of the invention and the invention. Therefore, those skilled in the art can modify and change the above embodiments in the spirit of the two days. The right scope of the present invention should be as set forth in the scope of the patent application to be described later. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a structural view of an antenna according to an embodiment of the present invention. Figure 2 is a graph showing the measured return loss for an embodiment of the antenna of the present invention. Figure 3 is a graph showing the simulated radiation efficiency of an embodiment of the antenna of the present invention. Fig. 4 is a structural view showing another embodiment of the antenna of the present invention. [Explanation of main component symbols] .1: Antenna of the present invention, an embodiment n, 41: dielectric substrate 12, 42 ground plane 121, 421: short-circuit point 13, 43: support medium 14, 44: feed metal portion 141, 441: First specific spacing 15, 45: first radiating metal portion 16, 46: shorting metal line 13-53685 161, 461: connecting point 17.47: second radiating metal portion 171, 471: second specific spacing 172, 472: connecting metal line 18.48: signal Source 21 · Southern Frequency Resonant Band 22: Low Frequency Resonant Band 4: Another Embodiment of Antenna of the Present Invention
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