1241053 玫、發明說明： 【發明所屬之技術領域】 本發明係關於一種低側高天線，特別是指一種在降 低平板天線側面高度的同時，不影響天線頻寬並能降低天 5 線的SAR值之低側高天線。 【先前技術】 在無線通sfL裝置上’由於内部天線（internal antenna， 又稱intenna)具有低側高（i〇w profile，低側面高度，簡稱 低側向）及低SAR(Specific Absorption Ratio，特定吸收率 10 ’指人體所吸收之電磁輻射量量測值）值等因素，使得内 部天線逐漸地取代了現有行動電話使用之外露式天線。 内部天線主要可分成兩種： (1) 無接地微帶線平板天線（microstrip patch with〇ut ground connection)7 ，如圖1所示，又稱半波長微帶線 15平板天線（Half_wave micr〇Stdp patch)，此種天線雖具有 絕佳的天線效能，但由於需要較大的輻射面積，因此通常 應用在基地台、太空梭及導彈等大型裝置上。1241053 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a low-side high antenna, in particular to a type of antenna that reduces the side height of a flat panel antenna without affecting the antenna bandwidth and reducing the SAR value of the antenna. Low side high antenna. [Prior technology] On wireless sfL devices, 'the internal antenna (also known as intenna) has a low side profile (iow profile, low side height) and a low SAR (Specific Absorption Ratio, specific Absorption rate 10 'refers to the measured value of electromagnetic radiation absorbed by the human body) and other factors, so that the internal antenna gradually replaces the external antenna used by the existing mobile phones. The internal antenna can be divided into two types: (1) Microstrip patch with antenna ground (7), as shown in Figure 1, also known as half-wave microstrip line 15 antenna (Half_wave micr〇Stdp Patch), although this antenna has excellent antenna performance, but because it requires a large radiation area, it is usually applied to large devices such as base stations, space shuttles, and missiles.
(2) 有接地微帶線天線（micr〇strip with gr_d C〇nneCti〇n)8，如圖 2 所示，又稱 piFA(planar Inverted F 20 Antenna，倒F型天線）’其具有一與位於其下方之一接地 面9上的一饋入部9丨電性連接之饋入點81，以及一與接 地面9電性連接之接地點8 2。 且由於PIFA利用，，接地，，所產生之映射（mapp]ng)效應 ，使微帶天線的長度縮短至四分之一波&，因❿適合被應 1241053 用在行動電話以及其他以空間/尺寸為首要考量的無線裝 置上，所以一般行動雷 笔居使用之内部天線大都為pIFA。(2) a grounded microstrip antenna (micr strip with gr_d C〇nneCti〇n) 8, as shown in Figure 2, also known as piFA (planar Inverted F 20 Antenna, inverted F antenna) One of the feeding portions 9 on the ground plane 9 below is a feeding point 81 electrically connected to the feeding portion 81, and a ground point 82 is electrically connected to the ground plane 9. And because of the mapping (mapp) ng effect produced by PIFA, grounding, the length of the microstrip antenna is shortened to a quarter wave & it is suitable for use in mobile phones and other space applications. / Size is the primary consideration for wireless devices, so most of the internal antennas used by mobile action pen pens are pIFA.
PIFA擁有草此牲M 有杲二特性，其中最重要的則屬其尺寸與頻 寬的關係’因為PIFA的頻寬係由其體積（長（L)X寬（w)x 间（H))所决疋’其中又以其高度（Η)對頻寬影響甚巨。此 外，由於HFA的共振頻率係由其邊長（即長（Η)+寬（W))所 決定’因此可藉由纟PIFA上形成電感性負載(例如在 PIFA之平板上開槽），或者在腦上形成電容性負載（例 ίο 15 如將PIFA之平板的局部彎折使接近於接地面)改變其邊長 而調整PIFA的共振頻率。 、 此外，PIFA又被稱之為一，，電場天線，，，亦即PIFA的 共振頻率係由其所形成之電場所控制。且當在—pifa上 形成複數個頻帶共振區（即多頻天線）時，這些頻帶共振區 將曰互相〜喜’亦即當某—頻帶共振區的長度改變時，豆 他頻帶共振區的共振頻率亦會受到影響，而具有較高之： 輛性（hi coupling)。 再者，Ik著行動電話越來越輕薄短小 内部空間變得更加有限，因此一些降低叫則高以減；; PIFA體積的方法被相繼提出。例如在piFA與接地面之間 夾置；|電材料，可讓PIFA的體積相對於介電材料的介 電常數成比例地減少’但此一作法卻會造成_頻寬縮 短而無法付合規格要求。而這雖然可藉由一平面型外露式 天線來增加(補償)PIFA所損失的頻χ，但是外露式天線 在靠近使用者身體時，其所產生# SAR值卻超出目前的 20 1241053 限制（FCC: 备首：？ ’ ΡΙΜ W 一個值得注意的特性是，其頻寬並不 會直接受設在其下方的姑仏τ 卜 ^ rSH 'Α ^ 、 尺寸所影響，但卻會受到該 接地面邊長（即長+寬）長度的影響。 【發明内容】 因此，本發明之目的 線體積卻不會縮短其頻寬 求之低側南天線。 在於提供一種可縮小平板天 而能達到低側高及低SAR需 於是，本發明之低側高天線，包括-輻射元件及-10接地面。該輻射元件具有一輛射面，以及設在_面上 之：饋入點。該接地面與該輻射元件相間隔地上下疊置， 且該接地面上形成有-饋入部與該饋入點電性連接。其特 徵在於：在該接地面上更形成一槽狀輕射冑，其具有_位 於該饋入部之第一端，—位於該接地面的一邊緣之第二端 15，以及一連接該兩端之槽道。藉此，可在降低該輻射元件 側高的同時’利用該槽狀輻射部，可補償該輻射元件因降 低側南所損失之頻寬，並降低天線之SAR值。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效， 20在以下配合參考圖式的二較佳實施例的詳細說明中，將可 清楚的明白。 如圖3所示，是本發明低側高天線1的第一較佳實 施例’其包括一輻射元件2及一接地面3，且在本實施例 中，低側高天線1係以設在一小型無線通訊裝置（例如行 1241053 動電逢）中為例。其中接地面3你一 係一形成在一絕緣基板（例 如印刷電路板）3〇的-面上之銅帛，並在接地面3上設有 -與-訊號傳輪線(圖未示)連接之饋入·P31，且饋入部 31係與接地面3相絕緣地設在絕緣基板3〇上。 輪射元件2係與接地面3相對且相間隔地設在接地 面3上方’其具有一輻射面2〇以及設在輻射面上之一 ίο 15 20PIFA has two characteristics, the most important of which is the relationship between its size and bandwidth 'because PIFA's bandwidth is determined by its volume (length (L) x width (w) x interval (H)) Decided 疋 ', and its height (Η) has a great impact on bandwidth. In addition, since the resonance frequency of the HFA is determined by its side length (ie, length (+) + width (W)), an inductive load can be formed on the PIFA (for example, slotting on a PIFA plate), or A capacitive load is formed on the brain (for example, 15) If the local bending of the flat plate of PIFA is close to the ground plane, the side length is changed to adjust the resonance frequency of PIFA. In addition, PIFA is also called one, the electric field antenna, that is, the resonance frequency of PIFA is controlled by the electric field formed by it. And when a plurality of frequency band resonance regions (ie, multi-frequency antennas) are formed on the -pifa, these frequency band resonance regions will be called each other ~ hi ', that is, when the length of a certain frequency band resonance region is changed, the resonance of the bean frequency band resonance region The frequency will also be affected, and has a higher: hi coupling. Furthermore, Ik's mobile phones are getting thinner, lighter and shorter. The internal space has become more limited, so some calls are reduced to higher; PIFA volume methods have been successively proposed. For example, sandwiching between piFA and the ground plane; | Electric materials can make the volume of PIFA reduce proportionally to the dielectric constant of the dielectric material ', but this method will cause the bandwidth to be shortened and cannot meet the specifications Claim. Although this can increase (compensate) the frequency χ lost by PIFA by a planar exposed antenna, when the exposed antenna is close to the user's body, its # SAR value exceeds the current 20 1241053 limit (FCC : Bishou:? 'ΡΙΜ W A noteworthy feature is that its bandwidth will not be directly affected by the size and size of the 仏 τ ^ ^ rSH' Α ^ located below it, but it will be affected by the ground plane edge The effect of the length (ie, length + width). [Summary of the Invention] Therefore, the purpose of the present invention is to reduce the bandwidth of the low-side south antenna without shortening its bandwidth. It is to provide a low-profile height that can reduce the height of the flat panel. Therefore, the low-side high antenna of the present invention includes a radiating element and a -10 ground plane. The radiating element has a radiation plane, and a feed point provided on the _ plane: the ground plane and the The radiating elements are stacked on top of each other at intervals, and a feed-in portion is formed on the ground plane to be electrically connected to the feed-in point. It is characterized in that a groove-shaped light beam is formed on the ground plane, which has The first end of the feed-in The second end 15 of one edge of the ground plane, and a channel connecting the two ends. Thereby, while reducing the height of the side of the radiating element, the groove-shaped radiating portion can be used to compensate for the lower side of the radiating element. The frequency bandwidth lost by the antenna and the SAR value of the antenna are reduced. [Embodiment Modes] Regarding the foregoing and other technical contents, features, and effects of the present invention, 20 In the following detailed description of the two preferred embodiments with reference to the drawings, It will be clearly understood. As shown in FIG. 3, it is a first preferred embodiment of the low-side high antenna 1 according to the present invention, which includes a radiating element 2 and a ground plane 3, and in this embodiment, the low-side high antenna 1 The antenna 1 is taken as an example provided in a small wireless communication device (for example, row 1241053 electric circuit). Among them, the ground plane 3 is a copper formed on the -side of an insulating substrate (such as a printed circuit board) 30.帛, and a feed-in P31 connected to the -signal transmission line (not shown) is provided on the ground plane 3, and the feed-in part 31 is provided on the insulating substrate 30 in isolation from the ground plane 3. Wheel The radiation element 2 is opposite to the ground plane 3 and is provided on the ground plane 3 at intervals. Party 'having a radiating surfaces and provided on the emission surface 2〇 one ίο 15 20
饋：點21及-接地點22。輕射面20係一矩形金屬平板 ，習稱平板天線（patch antenna)，且為避免扭曲變形輻 射面20 it常被貼附在一絕緣基材(圖未示)上，再疊置在 接地面3上方。饋入點21係與接地面3上之饋入部η電 !生連接’以將由饋入部3 i輸出的訊號傳送至輻射面⑽上 田射出去或者將輻射面接收之訊號傳送至饋入部3 J ;且接地‘點22係與接地面3電性連接，而使㈣元件2 形成一 PIFA，即所謂之，，電場天線⑷⑽心fieid她腿），， 而且藉由接地點22與接地面3連接，使得輻射元件2 之輻射面20的表面積只需等效於共振頻率的四分之一波 長（約為無接地平板天線表面積的一半），故適用於行動電 話等小型無線通訊裝置中。 當然，如圖4所示之另一實施態樣，當輻射元件4 係設在一大型無線通訊裝置上（亦即不以體積大小為主要 考量）時，輻射元件4即可不與接地面3電性連接（亦即不 設置接地點），而形成一無接地平板天線，惟如此一來， 輻射元件4的輻射面40面積必須為輻射元件2的輻射面 20面積的大約兩倍大。 7 1241053 俜 #閱圖3所示，由於輻射元件2的共振頻率 ，由Μ面2的邊長（即長（L)+寬（w))所決定 ^ 實施例中，係执斗^从在本 1〇ΛΛ 係5又叶輪射面2的長寬，使輪射面20能夠在 ==)產生一 田 形成一電感性負載23(即在輻射面2〇上來 成一由邊緣往内延柚夕桃 ^ 20上开U Φ 槽道（Sl〇t)23)，或者藉由在韓射面 上也成-電容性負載24(即在輻射面 一朝接地面3方向6 遭、、彖形成 方白向下考折’使接近接地面3之彎折部 ίο 15 、工，來改變輕射面2〇的共振頻率。而且，由上 可知，輕射元件2的頻寬雖由其體積’即輕射面面 積與高度㈣射面20與接地面3的距離 ：面 =高(H))所決定，但卻以其高度⑻的變化影響 因此，如圖3所示，本發明之特徵在於，在接地面3 上更形成-槽狀輕射部6，其具有一與饋入部3ι相鄰之 弟一端6卜一位於接地面3的_邊緣^ 及-連接第-及第二端61、62之槽，63。其中槽道 係猎由將由接地面3之第-端61朝接地面3之邊緣 向延伸至第二端62之路徑上的金屬去除而產生，並形成 如圖1所示之一基本態樣。藉此，在接地面3上形成一類 似於-，，磁場天線（magnetic fleld antenna)”之槽狀天線 (slot績繼）’並設計該槽狀天線的形狀構造，使恰可在 -低頻段（900Hz)產生共振。因此’低側高天線2藉由輻 射兀件2以及形成在接地面3上之槽狀輻射部6，成為— 20 1241053 2用在高、低兩不同頻段（胸MHz及9⑻顧z)之雙頻 大線。 且來狀及槿t ^射部6之共振頻率更可藉由適當設計 …/ 以改變。例如圖6所示，令槽狀輻射部 _曰、64开，成—呈鋸齒狀連續彎曲之形狀；或如圖7 所示’令槽狀輻射部 , 6形成一 L形，亦即由其第一端61 =道63垂直方向向外延伸形成-第-支臂65,·或如 二斤不，令槽狀輕射部6形成一 ”，亦即除了上述 之弟一支臂65，更由；|：晶；首〇 ίο 文由心道63中央處朝與第一支臂65同 側且平行方向延伸一第二支臂66;抑或如圖$所 _射部6形成一 ”，亦即除了上述第一及第二支 煮65 66外，更由槽道63之接近第二端α處，朝盥第 二支臂66同側且平行方向延伸_第三支臂Ο;藉… 15 加槽狀輕射部6之總長度’以改變其在低頻段之共振頻； 〇 特別是’藉由在接地面3上形成槽狀輻射部6後， 可使得接地面3的總長度變長，且根據上述ριρΑ與接地 面總長度之關係可知，當接地面之總長度增加時，ΗΡΑ 的頻孳亦將隨之增加。因此，當為了縮小輻射元件（即 PIFA)2的體積而將輻射元件2的高度降低時，輻射元件2 因降低高度所損失之頻寬，將可藉由接地面3上槽狀輕射 部6的形成獲得補償，而克服了習知piFA在高度降低時 頻寬隨之縮短的問題。所以，藉由在接地面3上形成槽^ 輻射部6,除了使低側高天線丨增加一低頻收發頻段^， 20 1241053 /幸田射元件2在縮小體積(即降低高度)的同時，不會 …員寬跟著細紐’而仍能符合規格要求，並達到將目前 之低側高天線⑽A)的體積進-步縮小的目的。 、一、 卜由於低側鬲天線1的高、低頻天線（即輻 I件2與槽狀_射部6)之共振頻率係、分別由其電、磁 努“工制’且並非形成在同-平板(patch)上，因此具有較 低之互_性（lc)w eGupling)。所以，當輕射元件2或形成 在接地面3上之槽狀輕射部6的構造或形狀有所改變時， 彼此的共振頻率即不易受到影響。 10 15 、此外圖10係槽狀輻射部ό形成如圖8所示之ρ型 :道形式時，針對低側高天線1之量測結果，*圖中可知 田低側回天線1作用在低頻段（即槽狀輻射部6)時，由饋 邛3 1饋入之電流2 5會沿著槽狀輻射部6之槽道6 3及 弟一支臂65擴散到整個接地面3上，藉而降低SAR的峰 值再由圖11顯示之量測結果可知，當低側高天線1作 用在同頻段（即輻射元件2)時，由於輻射元件2下方有接 地面3遮蔽，類似於傳統具有接地面之内部天線構造，可 防止電磁波朝接地面方向（即人體方向）輻射，而能夠使 SAR值維持在限定範圍内。 而且’如圖12所示，為槽狀輻射部6形成如圖8所 不之F型槽道形式時，量測低側高天線1之 SWR(Standing Wave Rati〇,電壓駐波比）值所得到的結果， 且由圖12中可知，低側高天線1在高、低頻段（900MHz 及1900MHz)部分皆具有良好的SWR值及頻寬。 10 1241053 -此外，為進-步縮小輕射元件2的體積，如圖 不本貝細例更可在接地面3之槽狀輕射部6 上方，亦即在輻射元件2與槽狀輕射部6之間， 入) 刪：〇,藉此’可使輕射…的體積隨介電材；;0 的介電係數成比例地縮小（亦即降低輻射元件2的古 然後，再藉由調整槽狀輻射部6之形狀構造來補償;度)元 件2因介電材料70的加入所損失之頻寬。 田射7" 10 15 再者’如圖14所示，本實施例更可進-步地，，由 在介電材料70表面局部佈設一層金屬71 ’來改盖样奸 射部6之電磁場的方向@，使槽狀輻射部6產生之^磁^ 更為集中，而能夠降低SAR值並提升其輕射效率。苟 —再參照圖15所示’是本發明低側高天線的第二較佳 實施例，其與第一實施例唯一不同之處在於，輻射元件5 並非一平板⑽eh)，*是_單極天線（m嶋p*崎叫 ’其一端設有一接地點51與接地面3電性連接，並在與 接地點51間隔-適當距離處設置-饋入點52，並與接地 面3上之饋入。p 3 1電性連接，藉此形成一 piFA，並可藉 由在接地面3上形成之槽狀韓射部6，來補償因降低輕射 元件5之高度所損失的循宮 貝I 以及達到如上述由槽狀輻射 部6所帶給輻射元件5的種種好處。 綜上所述，本發明藉由在低側高天線丨之接地面3 上形成槽狀輕射部6’除了形成一可在低頻段（900MHz)產 生共振之槽狀天線外’更可藉由槽狀輻射部6補償作用在 高頻段（测MHz)之輕射元# 2、5因降低高度所損失之 20 5 10 15 2〇 1241053 y、寬’而且’藉由將低側高天、線！之言 形成在各自獨立的元件 m線力別 狀輕射部似，使_以2 5及=及接地面3之槽 各自形狀構造的q ㈢狀輻射部6不致因 傅w的凋整，而影響到 更可藉由在槽狀輻射邱& μ 之共振頻率，·此外， 日狀&射部6上面覆蓋介 輻射部6進行適者 ^電材料50並對槽狀 寬的情況下，進二f 不致影響輻射元件2、5頻 ]度况下’進一步降低輻射元件 符合低側高之要喪.s + 之阿度，使更能 要求，另外，亦可藉由在介 面局部佈設一層金屬. , M 電材枓50之表 々又增金屬52，來改善槽狀輻射部 ，使槽狀輻射部6之輻射效能 ^Feed: point 21 and-ground point 22. The light emitting surface 20 is a rectangular metal flat plate, commonly known as a patch antenna. In order to avoid distortion, the radiation surface 20 it is often attached to an insulating substrate (not shown) and then stacked on the ground plane. 3 above. The feeding point 21 is electrically connected to the feeding portion η on the ground plane 3 to transmit the signal output by the feeding portion 3 i to the radiation surface ⑽ Ueda for shooting or transmitting the signal received by the radiation surface to the feeding portion 3 J; And the ground point 22 is electrically connected to the ground plane 3, so that the ㈣ element 2 forms a PIFA (so-called, the electric field antenna is centered on the legs), and is connected to the ground plane 3 through the ground point 22, The surface area of the radiating surface 20 of the radiating element 2 only needs to be equivalent to a quarter wavelength of the resonance frequency (approximately half of the surface area of the groundless flat plate antenna), so it is suitable for small wireless communication devices such as mobile phones. Of course, as shown in another embodiment shown in FIG. 4, when the radiating element 4 is set on a large wireless communication device (that is, the size is not the main consideration), the radiating element 4 may not be electrically connected to the ground plane 3. The ground connection (ie, no ground point is provided) forms a groundless flat plate antenna. However, the area of the radiating surface 40 of the radiating element 4 must be approximately twice the area of the radiating surface 20 of the radiating element 2. 7 1241053 俜 # As shown in FIG. 3, the resonance frequency of the radiating element 2 is determined by the side length (that is, the length (L) + width (w)) of the M surface 2 ^ In the embodiment, the ^^ The 10 ΛΛ series 5 has the length and width of the impeller shooting surface 2 so that the shooting surface 20 can produce a field at == to form an inductive load 23 (that is, from the radiating surface 20 to form an inward extending grapefruit. Xi Tao ^ 20 open U Φ channel (SlOt) 23), or by forming a capacitive load 24 on the Korean shooting surface (that is, 6 on the radiation surface facing 3 in the direction of the ground surface, 彖Fang Bai made a downward test to "close the bending portion ίο15 of the ground plane 3 to change the resonance frequency of the light-emitting surface 20. Moreover, it can be seen from the above that although the bandwidth of the light-emitting element 2 is determined by its volume" That is, the area of the light-emitting surface and the distance between the high-incidence projection surface 20 and the ground plane 3: surface = height (H)), but it is affected by the change of its height. Therefore, as shown in FIG. A trough-shaped light-emitting portion 6 is further formed on the ground plane 3, which has a younger end 6 adjacent to the feed portion 3m, which is located at the edge of the ground plane 3 and-connecting the first and second ends 61, Slot 62, 63 . The channel is created by removing the metal on the path extending from the first end 61 of the ground plane 3 toward the edge of the ground plane 3 to the second end 62, and forms a basic state as shown in FIG. Thereby, a slot antenna similar to-, magnetic fleld antenna "is formed on the ground plane 3, and the shape structure of the slot antenna is designed so that it can be used in the-low frequency band. (900Hz) generates resonance. Therefore, the 'low-side high antenna 2', through the radiating element 2 and the slot-shaped radiating portion 6 formed on the ground plane 3, becomes -20 1241053 2 for high and low frequency bands (chest MHz and 9 Regarding the double-frequency large line of z). The resonance frequency of the shape and hibiscus t ^ radiating part 6 can be changed by appropriate design ... /. For example, as shown in FIG. ， 成 —A zigzag continuous curved shape; or as shown in FIG. 7 'Let the trough-shaped radiating portion, 6 form an L-shape, that is, the first end 61 = the road 63 extends outward in the vertical direction-the first- The arm 65, or if two pounds are not provided, the groove-shaped light-emitting portion 6 forms one ", that is, in addition to the brother's arm 65, more: |: 晶; 首 〇ίο Wenyou Xindao 63 Extend a second arm 66 toward the same side and parallel to the first arm 65; or as shown in Fig. _, The shooting section 6 forms a ", that is, in addition to the first and Outside the support 65 and 66, the channel 63 is close to the second end α, and extends toward the same side and parallel direction of the second support arm 66. The third support arm 0; 'Total length' to change its resonance frequency in the low-frequency band; 〇 In particular, 'by forming a trough-shaped radiating portion 6 on the ground plane 3, the total length of the ground plane 3 can be made longer, and according to the aforementioned ριρΑ and the ground plane The relationship between the total lengths shows that as the total length of the ground plane increases, the frequency of the HPA will also increase. Therefore, when the height of the radiating element 2 is reduced in order to reduce the volume of the radiating element (ie, PIFA) 2, the radiation The bandwidth lost by the height reduction of element 2 can be compensated by the formation of the slot-shaped light-emitting portion 6 on the ground plane 3, and the problem that the conventional piFA has a shortened bandwidth when the height is reduced. Therefore, By forming a slot ^ radiating portion 6 on the ground plane 3, in addition to increasing the low-side high antenna 丨 a low-frequency transmitting and receiving frequency band ^, 20 1241053 / Kota radio element 2 while reducing the volume (ie reducing the height), it will not ... Wide follow thin button 'while still meeting the specifications and reaching the current The purpose of further reducing the volume of the low-side high antenna ⑽A). First, due to the resonance frequency system of the high- and low-frequency antennas of the low-side 鬲 antenna 1 (ie, the radiating element 2 and the slot-shaped radiating portion 6), respectively Because of its electric and magnetic “working system”, it is not formed on the same-pattern (patch), so it has a lower inter-activity (lc) w eGupling). Therefore, when the structure or shape of the light emitting element 2 or the groove-shaped light emitting portion 6 formed on the ground plane 3 is changed, the resonance frequencies of each other are not easily affected. 10 15, In addition, the 10-series trough-shaped radiating section is formed into a ρ-type as shown in FIG. 8: In the form of a track, the measurement results for the low-side high antenna 1 are shown in the figure. In the frequency band (ie, the slot-shaped radiating portion 6), the current 2 5 fed by the feeder 3 1 will spread along the channel 6 3 of the slot-shaped radiating portion 6 and one of the arms 65 to the entire ground plane 3. The reduction of the peak value of SAR can be seen from the measurement results shown in FIG. 11. When the low-side high antenna 1 acts on the same frequency band (ie, the radiating element 2), the ground plane 3 is shielded under the radiating element 2, similar to the traditional The internal antenna structure on the ground prevents electromagnetic waves from radiating toward the ground plane (that is, the direction of the human body), and can maintain the SAR value within a limited range. Moreover, as shown in FIG. 12, when the slot-shaped radiating portion 6 forms the F-shaped channel as shown in FIG. 8, the SWR (Standing Wave Rati0) value of the low-side high antenna 1 is measured. The obtained results, and it can be seen from FIG. 12 that the low-side high antenna 1 has good SWR values and bandwidths in the high and low frequency bands (900 MHz and 1900 MHz). 10 1241053-In addition, to further reduce the size of the light emitting element 2, as shown in the detailed example, it can be above the grooved light emitting portion 6 of the ground plane 3, that is, the radiation element 2 and the grooved light emitting Between Section 6, enter) Delete: 0, by which the volume of light-emitting ... can be reduced proportionally with the dielectric material;; the dielectric constant of 0 is reduced (that is, the radiation element 2 is reduced, and then, by The shape and structure of the groove-shaped radiation portion 6 are adjusted to compensate; the frequency bandwidth of the element 2 lost due to the addition of the dielectric material 70. Tian She 7 " 10 15 Furthermore, as shown in FIG. 14, this embodiment can be further advanced, by partially laying a layer of metal 71 on the surface of the dielectric material 70 to cover the electromagnetic field of the spurious emission section 6. The direction @ makes the magnetic field generated by the trough-shaped radiating portion 6 more concentrated, which can reduce the SAR value and improve its light emission efficiency. Gou—Refer to FIG. 15 again, which is the second preferred embodiment of the low-side high antenna of the present invention. The only difference from the first embodiment is that the radiating element 5 is not a flat plate (eh). * Yes_monopole The antenna (m 嶋 p * 崎) is provided with a grounding point 51 at one end which is electrically connected to the grounding surface 3, and is located at a proper distance from the grounding point 51-a feeding point 52, and feeds on the grounding surface 3. P 3 1 is electrically connected, thereby forming a piFA, and the groove-shaped Korean firing portion 6 formed on the ground plane 3 can be used to compensate for the loss of the Xing Gongbei I by reducing the height of the light emitting element 5 And to achieve the various benefits of the radiating element 5 brought by the slot-shaped radiating portion 6 as described above. In summary, the present invention can form a light-emitting portion 6 ′ in the shape of a slot on the ground plane 3 of the low-side high antenna A slot antenna that can resonate in the low frequency band (900MHz) can be compensated by the slot radiation 6 in the high frequency band (measuring MHz) for light emitting elements # 2, 5 20 5 lost due to height reduction 10 15 2〇1241053 y, wide 'and' by forming the low-side high sky, line! Words are formed on the m-line of each independent element The light-emitting part of the other shape is similar, so that the q-shaped radiation part 6 constructed with the shape of each of the grooves of 2 5 and = and the ground plane 3 will not be affected by the aging of Fu w, which can be affected by the radiation in the groove shape. & μ resonance frequency. In addition, the sun-shaped & radiating portion 6 is covered with the dielectric radiating portion 6 to perform the ^ electrical material 50 and the groove is wide, and the second f will not affect the radiating elements 2 and 5 frequencies.] Under the condition, the radiating element is further reduced to meet the requirements of low side height. The degree of s + makes it more capable. In addition, a layer of metal can be arranged in the interface. Metal 52 to improve the trough-shaped radiating portion and the radiation efficiency of the trough-shaped radiating portion 6 ^
值。 又小钕升，並降低其SAR 惟以上所述者，僅為本發明 子乂住貫％例而已，告 不能以此限定本發明實施之範圍’即大凡依本 ； 利範圍及發明說明書内容所作之簡單的等效變化與修:專 皆應仍屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是種無接地微帶線+才反天線《構造示音 圖； 思 圖2是習知一種有接地微帶線天線之構造示意圖 圖3是本發明之低側高天線的第一較佳實施例 造示意圖； 圖4是第一實施例的另一實施態樣； 圖5是第一實施例之輻射元件的一變化例； 圖6是第一實施例之槽狀輻射部的一變化例 之構 12 !241〇53 10 圖 圖 圖 圖 元件及 圖 件及接 圖 圖 材料； 圖 層金屬 圖 示意圖 7是第一實施例之槽狀輻射部的另一 ^ 8是第一實施例之槽狀輻射部 —變化例 Θ是第一實施例之槽狀輻射部 文化例 10顯示第一實施例之槽狀輻射部作 則，一 接地面上的電流分佈情形； t 在輪射 11顯示第一實施例之輻射元件作用時 地面上的電流分佈情形； t ’在轄射元 1 2顯示第一實施例之SWR量測結果· 1 3顯示在第一實施例之槽狀輻射 丄復盍一介電 14顯示在圖1 3所示之介雷好粗 . 丨冤材枓上局部地佈設一 ，及 1 5是本發明低側高天線的第二每 平乂狂a轭例之構造 15value. The small neodymium rises and reduces its SAR. However, the above is only an example of the present invention, and it cannot be used to limit the scope of the invention's implementation, that is, the scope of the invention and the contents of the invention specification. The simple equivalent changes and repairs: all should still fall within the scope of the invention patent. [Brief description of the figure] Figure 1 is a kind of non-grounded microstrip line + anti-antenna "structural sound diagram; Figure 2 is a schematic diagram of the structure of a conventional grounded microstrip antenna Figure 3 is the low side height of the present invention Schematic diagram of the first preferred embodiment of the antenna; Fig. 4 is another embodiment of the first embodiment; Fig. 5 is a modified example of the radiating element of the first embodiment; Fig. 6 is a slot shape of the first embodiment Structure of a modified example of the radiating part 12! 241〇53 10 Figures, figures, components, and drawing materials; Layer metal diagram 7 is another example of the slot-shaped radiating part of the first embodiment. Slot-shaped radiating section of an embodiment—variation Θ is the example of the slot-shaped radiating section of the first embodiment. Example 10 shows the example of the slot-shaped radiating section of the first embodiment, the current distribution on a ground plane; Shoot 11 shows the current distribution on the ground when the radiating element of the first embodiment acts; t 'shows the SWR measurement results of the first embodiment in the radio unit 1 2 · 1 shows the slot-shaped radiation in the first embodiment A complex dielectric 14 is shown in Figure 1 and the dielectric lightning is thick. Partially laid on Tu injustice a material, and 15 is a low-profile antenna structure of the present invention, each of the second level qe Great a yoke of Example 15
13 1241053 【圖式之主要元件代表符號說明】 1、5 低側高天線 2、 4 輻射元 3 接地面 6 槽狀輻射岩 20、40輻射面 21 饋入點 5 2 2接地點 23 槽道 24彎折部 30 絕緣基板 3 1饋入部 33 側邊 7 0介電材料 71 金屬 61第一端 62 第二端 10 63、64槽道 65 第一支臂 66第二支臂 67 第三支臂 1413 1241053 [Explanation of the symbols of the main components of the figure] 1. 5 Low-side high antenna 2, 4 Radiation element 3 Ground plane 6 Slot radiating rock 20, 40 Radiation plane 21 Feed point 5 2 2 Ground point 23 Slot 24 Bend portion 30 Insulating substrate 3 1 Feed portion 33 Side 7 0 Dielectric material 71 Metal 61 First end 62 Second end 10 63, 64 Slot 65 First arm 66 Second arm 67 Third arm 14