M398212 ____ - 99年12月丨7曰修正替換頁 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種高輻射效率微型天線，特別是指一種可以增加頻寬 並縮小天線尺寸的高轄射效率微型天線。 【先前技術】 由於通訊技術的進步，越來越多的電子產品都開始具有無線通訊的功 . 能，早期因受限於技術問題，使用於大多數通訊產品的天線或多或少會暴 • 露於產品之外，但是隨著無線通訊技術的蓬勃發展，手機、無線區域網路 (WLAN)和衛星導航(GPS)這類個人化電子產品因為市場需求量大，使得相 關產品製造商在提升該些產品的品質和性能之餘，更致力追求於外觀的設 計，使用於這些通訊產品的天線開始被要求需可以被隱藏在產品内部，除 了增加產品外觀設計的多元性之外，更使得這些產品具有輕薄、短小的特 性，希望能藉此吸引普羅消費者的目光。M398212 ____ - December 1999 丨 7曰 Correction Replacement Page 5, New Description: [New Technology Area] This creation is about a high-radiation efficiency miniature antenna, especially one that can increase the bandwidth and reduce the size of the antenna. The radiation efficiency micro antenna. [Prior Art] Due to the advancement of communication technology, more and more electronic products are beginning to have the function of wireless communication. In the early days, due to technical problems, the antennas used in most communication products are more or less violent. Beyond the product, but with the rapid development of wireless communication technology, personalized electronic products such as mobile phones, wireless local area networks (WLAN) and satellite navigation (GPS) have increased the demand for related products. In addition to the quality and performance of these products, the company is also striving for the design of the appearance. The antennas used in these communication products are required to be hidden inside the product, in addition to increasing the diversity of the product design. The product has the characteristics of lightness and shortness, and it is hoped to attract the attention of the general consumers.
^ 一般線性天線大部分以單極天線(monopole)或PlFA(planar inverted-F antenna)天線原理設計，當這類天線放置於手持式產品時，容易受人體的干 擾而造成天線功能的下降，導致接收能力變差。相對而言，迴路(L〇〇p)天線 •的特性比較不易受到人體等外界環境之影響，然而利用迴路天線原理設計 之天線’容易有體積過大或頻寬較窄之缺點。 【新型内容】 本創作人即針對上述缺失提出改善對策，本創作之高輪射效率微变天 線具有趙積小、頻寬較大且較不易受到使用者人體干擾等優點。 本創作係-種高輕射效率微型天線，此一高輕射效率微型天線具有可 3 M398212— 99年12月17曰修正替換頁 以增加頻寬’又具有容_整阻抗和共__優點，十分適合應用於手 持式電子產品，以提升無線傳輸之效能β 本創作的同転射效率微型天線包括有至少一基體、至少一第一電極、 至少-第二電極和至少-第三電極’其中，第一電極、第二電極和第三電 極係分別設置於基體之表面或_ H㈣連結於—訊賴入端，第 二電極係連接於-接地端並鄕—賴並行制設置，第三電極亦連接於 -接地端且設置於第-電極和第二電極的相對—側，設置在第—電極的上 方或下方的位置以與第—電極產生部分區域相互重疊的狀態，並麟—設( 定間距，以便由第-電極的上方或下方與第三電極在基體上產生―失層空 間藉由所七成的失置空間大小便會產生不同的電容效應以顯著縮小天線 體積，並且藉由第-電極、第二電極與第三電極間的相對位置或距離調整， 更可調整存在於電極間的等效電容值，因此，可以達到增加頻寬、縮小天 線體積的效果。 【實施方式】 以下即以實施例說明本創作之高輻射效率微型天線，在下述實施例# 中，為了嫌蝴及麵娜卩吻了解_爾所有‘ 電極係以長條狀雜為例，但在實際應㈣，該些雜並不-统絲: 長條形’而料為各㈣合形狀或是不之形狀。 實施例一 請參考第丨和2圖麻，本實關的高_鱗微鼓雜設置於一 一板2上，此高輻射效率微型天線包括有—基體嫩、一第一電極11、 -第二電極12、-第三電極13和三端電極14。 M398212 99年12月π日修正替換頁 * *-*-/11/0 γ^χ 其中基體赢係介電材料，並具有—第—絲ΗΠ^Ι^·、^ Generally, most linear antennas are designed with monopole or PlFA (planar inverted-F antenna) antennas. When such antennas are placed in handheld products, they are easily interfered by the human body and cause the antenna function to decrease. The receiving ability is degraded. Relatively speaking, the characteristics of the loop (L〇〇p) antenna are less susceptible to the external environment such as the human body. However, the antenna designed using the loop antenna principle is prone to the disadvantage of excessive volume or narrow bandwidth. [New content] The creator proposes improvement measures against the above-mentioned shortcomings. The high-initiation efficiency micro-change antenna of this creation has the advantages of Zhao Jixiao, large bandwidth and less susceptible to human body interference. This creation department is a kind of high-light efficiency micro-antenna. This high-light efficiency micro-antenna has 3 M398212-99 December 17 correction replacement page to increase the bandwidth' and has the advantages of capacitance and total impedance. It is very suitable for use in handheld electronic products to enhance the performance of wireless transmission. The same radiation efficiency micro-antenna includes at least one substrate, at least one first electrode, at least a second electrode and at least a third electrode. Wherein, the first electrode, the second electrode and the third electrode are respectively disposed on the surface of the substrate or _H(4) is connected to the immersion terminal, and the second electrode is connected to the ground terminal and arranged in parallel, the third The electrode is also connected to the grounding end and disposed on the opposite side of the first electrode and the second electrode, and disposed at a position above or below the first electrode to overlap with the first electrode generating partial region, and (The spacing is such that the upper or lower portion of the first electrode and the third electrode are generated on the substrate. The lost layer space has different capacitance effects by the 70% of the lost space to significantly reduce the antenna volume. Moreover, by adjusting the relative position or distance between the first electrode, the second electrode and the third electrode, the equivalent capacitance value existing between the electrodes can be adjusted, so that the effect of increasing the bandwidth and reducing the volume of the antenna can be achieved. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the high radiation efficiency micro antenna of the present invention will be described by way of an embodiment. In the following embodiment #, in order to understand the 及 及 所有 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' Actually, (4), the impurities are not - the wire: the long strip 'and the material is the shape of each (four) or not. For the first embodiment, please refer to the second and the second, the high _ scale micro The drum is disposed on a plate 2 including a base body, a first electrode 11, a second electrode 12, a third electrode 13, and a three-terminal electrode 14. M398212 December 1999 π Day Correction Replacement Page * *-*-/11/0 γ^χ The matrix wins the dielectric material and has -第丝ΗΠ^Ι^·,
一第一側面Η)3和-第二側面1G4 ;第—電極u係導電材質並設置於第一 表面肋，並與訊號饋入線22連結；又第二電極12是與第—電極h並行 設置於第-表面ΚΠ並與接地之祕23連結；㈣三電極⑽設置於基 體η上第二表面1〇2靠近第二側面⑽之__端，且第三電極13與第一電 極η有部分晴疊，在基體·中產生—相互編具有電容效應的區 域。端電極㈣設置於第—側面⑽和第二側面⑽，並分別與第一電極 1】 ' 第二 12和第三電極13相連，而各該電極u、12和13也經由端 電和14刀別與電路板2上的訊號饋入線22與接地線23連結，藉由端電極 14之設置也可提升微型天職定於電路板2時的穩定度。 在本實施例中，在第一表面101分別設置第-電極11和第二電極12， 電極11 12間會產生電容效果，可以增加高輻射效率微型天線的等效 電容量’來增加高姉效率微型天線_寬。而經由第-電極U與第三電 極13相互重疊區域的設置，產生電容的效果可鱗低天線之共振頻率或 縮小天線之體積。暖第二電極12與第三電極13之大小、雜與相對位 置，可以決定兩_極12、13間是轉疊，献重疊_之大小形狀與 間距可以調整天線之特性。總而言之，藉由變更各該電極1卜12和13 的尺寸、形狀或各該電極n、12和13間的相對位置或間距，即可調整天 線之共振_触抗，得酬f之天線特性。 本實施例天線之回波損耗(RetumL〇ss)如第3圖所示，此天線之頻寬約 為天線共振頻率的6%…般而言，根據迴路天線原理設計之天線的頻寬， 通常小於天線共振頻率的3%。藉由本實施例的結構設置，可以增加天線的 5 M398212 99年12月17曰修正替換頁· 頻寬’天線的頻寬值可以因此增加至128MHz。 實施例二 請參考第4圖所示，本實施例與實施例一大致相同，其中最大不同在 於，第一電極11和第二電極12具有不同之長度與形狀，且第三電極與第 二電極沒有重疊區域，以產生與實施例一不同的等效電容值，因此可以更 進一步產生與實施例一不同的天線特性。 實施例三 請參考第5圖所示，本實施例係本創作高輻射效率微型天線之另一實 擊 施態樣圖，其與實施例-大雜同’其中最大;^同處在於，本實施例係在 基體10A上更堆叠有第二基體10B，使得第一電極u和第二電極12係夾 置於基體1GA和第二基體1GB之間，第三電極13係如同實施例—設置於第 二表面102上。 在本實施例中，基體10A係可與第二基趙1〇B為相同或不同之材質， 當基體1GA和第二基體1()B為相同材質時，可視為第—電極u和第二電極 I2係並行設置於-體成形介電基體之内部。然而，如果第二基體ι〇Β係選鲁 用較高介電係數之材質時，可進一步縮減天線體之尺寸。 - 實施例四 · 請參考第6 _示，本實施嶋與實施例三大致相同，其中最大不同 係在基體10A之下更叠合有第二基體1〇c ’使本實施例中包括有三個相互 疊合之基體10A、第二基體丨0B和第三基體1QC，且基體碰、1GB和1〇c 為相同或不同之材質，當基體10A、第二基體1〇B和第三基體1〇c為相同 材質時，可視為第-電極u、第二電極12和第三電極13是分別設置於一 M398212 %年12月17日修正替換頁 體成形介電材質基體的内部，且第一電極11、第二電極12和第三電極13 係透過設置於基體10A、10B和l〇c側面的端電極η，與電路板(圖中未示） 的訊號饋入線(圖中未示)和接地線(圖中未示)分別產生電性連接。 實施例五 請參考第7圖所示，本實施例係與實施例四大致相同，惟其中第一電 極11和第二電極12係分別設置於第二基體ι〇Β和基體1〇A之表面，透過 這樣的設置，本實施例可以在第一電極1丨和第二電極12或是第一電極^ 和第三電極13之間產生與實施例四不同的電容值，藉此，可以產生與實施 例四不同的天線特性。 實施例六 請參考第8圖所示’本實施例係實施例五之一變化應用，其中不同之 處在於本實施例中，第-電極u係設置於第二基體腦的上表面與第三基 體i〇c的下表面，兩個第一極經由端電極14連結，並與訊號饋入線連結， 藉此，本實施例更可藉由兩個第-電極u分別設置於第三電極13的上方 和下方’分別產生兩個重疊爽置之區塊所形成之兩個具有電容器作用之夹 層，以產生與實施例五不同的天線特性。 實施例七 請參考第9圖所示，本實施例係本創作高韓射效率微型天線之另一實 施例，在本實施例中，第三電極13除了設置於基體1〇A之下表面外，也同 時於第二基體ΠΒ之上表面設置，藉由端電極14連結兩個第三電㈣並 與接地線連結。因此，兩個第一電極η與兩個第三電極13之間’分別形 成三個具電容效應之失層區域，經由分別改變各電極之尺寸、形狀或各電 7 M3^S212 99年12月17日修正替換頁 極間之間距，可以調整各重疊區域之電容值，因此可調整天線之特性，並 可以同時達到縮小天線的整體尺寸大小及增加天線頻寬之功效。 實施例八 凊參考第10圖所示，本實施例係與實施例五大致相同，惟其中第二電a first side Η) 3 and a second side 1G4; the first electrode u is electrically conductive and disposed on the first surface rib and coupled to the signal feed line 22; and the second electrode 12 is disposed in parallel with the first electrode h The first surface is connected to the grounding secret 23; (4) the three electrodes (10) are disposed on the second surface 1〇2 of the substrate η near the __ end of the second side (10), and the third electrode 13 and the first electrode η have a portion A clear stack, produced in the matrix - is a region that has a capacitive effect. The terminal electrode (4) is disposed on the first side (10) and the second side (10), and is respectively connected to the first electrode 1 ''the second 12 and the third electrode 13, and each of the electrodes u, 12 and 13 is also electrically connected via the terminal and 14 The signal feed line 22 on the circuit board 2 is not connected to the ground line 23, and the stability of the micro-day position on the circuit board 2 can also be improved by the arrangement of the end electrodes 14. In this embodiment, the first electrode 11 and the second electrode 12 are respectively disposed on the first surface 101, and a capacitance effect is generated between the electrodes 1112, which can increase the equivalent capacitance of the high radiation efficiency micro antenna to increase the high efficiency. Micro antenna _ wide. By the arrangement of the regions where the first electrode U and the third electrode 13 overlap each other, the effect of generating a capacitance can lower the resonance frequency of the antenna or reduce the volume of the antenna. Warming the size, impurity and relative position of the second electrode 12 and the third electrode 13, it can be determined that the two _ poles 12 and 13 are overlapped, and the size and shape of the overlap _ can adjust the characteristics of the antenna. In summary, by changing the size and shape of each of the electrodes 1 and 12 or the relative position or spacing between the electrodes n, 12 and 13, the resonance-impact of the antenna can be adjusted to obtain the antenna characteristics of the antenna. The return loss (RetumL〇ss) of the antenna of this embodiment is shown in Fig. 3. The bandwidth of the antenna is about 6% of the resonant frequency of the antenna. Generally, the bandwidth of the antenna designed according to the principle of the loop antenna is usually Less than 3% of the antenna resonance frequency. With the configuration of the present embodiment, it is possible to increase the antenna's 5 M398212, December 17, 1999, correction replacement page, bandwidth, and the bandwidth value of the antenna can be increased to 128 MHz. Embodiment 2 Please refer to FIG. 4 , the embodiment is substantially the same as the first embodiment, wherein the biggest difference is that the first electrode 11 and the second electrode 12 have different lengths and shapes, and the third electrode and the second electrode There is no overlapping area to produce an equivalent capacitance value different from that of the first embodiment, so that antenna characteristics different from those of the first embodiment can be further produced. Embodiment 3 Please refer to FIG. 5, which is another actual embodiment of the high-radiation efficiency micro-antenna of the present invention, which is the same as the embodiment-the largest one; In the embodiment, the second substrate 10B is further stacked on the substrate 10A such that the first electrode u and the second electrode 12 are sandwiched between the substrate 1GA and the second substrate 1GB, and the third electrode 13 is disposed as in the embodiment. On the second surface 102. In this embodiment, the base 10A can be the same or different material as the second base 1B, and when the base 1GA and the second base 1()B are the same material, it can be regarded as the first electrode u and the second. The electrode I2 is disposed in parallel inside the body-formed dielectric substrate. However, if the second substrate is selected to use a material having a higher dielectric constant, the size of the antenna body can be further reduced. - Embodiment 4 Please refer to FIG. 6 - the embodiment is substantially the same as the third embodiment, wherein the largest difference is that the second substrate 1 〇c ' is superimposed under the base 10A so that three are included in the embodiment. The base body 10A, the second base material 丨0B, and the third base body 1QC are superposed on each other, and the base body, 1GB, and 1〇c are the same or different materials, and the base body 10A, the second base body 1〇B, and the third base body 1〇 When c is the same material, it can be considered that the first electrode u, the second electrode 12 and the third electrode 13 are respectively disposed inside a M39812% of the modified replacement page body forming dielectric material substrate, and the first electrode 11. The second electrode 12 and the third electrode 13 pass through the terminal electrodes η disposed on the sides of the base bodies 10A, 10B and 10c, and the signal feeding lines (not shown) of the circuit board (not shown) and the grounding. Lines (not shown) create electrical connections, respectively. Embodiment 5 Referring to FIG. 7, the embodiment is substantially the same as the fourth embodiment, except that the first electrode 11 and the second electrode 12 are respectively disposed on the surface of the second substrate ι and the substrate 〇A. With such an arrangement, the present embodiment can generate a capacitance value different from that of the fourth embodiment between the first electrode 1 丨 and the second electrode 12 or the first electrode ^ and the third electrode 13, thereby generating Embodiment 4 different antenna characteristics. Embodiment 6 Referring to FIG. 8 , the present embodiment is a variation application of the fifth embodiment, wherein the difference is that in the embodiment, the first electrode u is disposed on the upper surface of the second matrix brain and the third On the lower surface of the substrate i 〇 c, the two first poles are connected via the terminal electrode 14 and are connected to the signal feed line. Therefore, the present embodiment can be further disposed on the third electrode 13 by the two first electrodes u. The upper and lower portions respectively generate two sandwiched capacitor layers formed by two overlapping cooling blocks to produce antenna characteristics different from those of the fifth embodiment. Embodiment 7 Referring to FIG. 9, this embodiment is another embodiment of the present invention. In this embodiment, the third electrode 13 is disposed outside the surface of the substrate 1A. At the same time, it is disposed on the upper surface of the second substrate, and the two electrodes (4) are connected by the terminal electrode 14 and connected to the ground line. Therefore, between the two first electrodes η and the two third electrodes 13 respectively, three loss-reduction regions having a capacitive effect are formed, respectively, by respectively changing the size, shape or electric power of each electrode. 7 M3^S212 December, 1999 On the 17th, the distance between the replacement page poles is corrected, and the capacitance value of each overlapping area can be adjusted. Therefore, the characteristics of the antenna can be adjusted, and the effect of reducing the overall size of the antenna and increasing the antenna bandwidth can be achieved at the same time. Embodiment 8 Referring to FIG. 10, this embodiment is substantially the same as Embodiment 5 except that the second one is
極丨2更包括有一向第一電極u之下方延伸形成之延伸部12A，延伸部12A 並與第-電極U間形成具電容效應之重疊區域，透過這樣的設置，本實施 例可以在第-電極1丨和第二電極12之間產生與實施例五不同的電容值， 藉此可以產生與貫施例五不同的頻寬效果或用以調整天線之特性。 讀 實施例九 ”月參考第11和12圖所示，本實施例係將本創作之高輻射效率微型天 線直接叹置於—電路板2之―淨空區(士啦⑽咖仰上此—淨空區a 路板在佈建電路時戶斤預留沒有佈建任何線路或接地層之區域，本淨空 區可作為本創作微型天線之基體，因此可以在製作電路板2的同時，在淨 空區21正反面完成第一電極u、第二電極12和第三電極η之設置，並使 電極11帛―電極12和第三電極13在不需要端電極的輔助下，直接鲁 刀別與電路板2上的訊賴人線22和接地線23相連，以達賴化製程、' 節省材料和組裝成本的效果。 實施例十 · 考第3和Η圖所示，本實施例係實施例九之變化態樣其中高 私射效率微敎_输輪2上、綱21娜，域是說第一電 '第二電極12和第三電極13並非—定設置於淨雜21之表面，當高 。射效率微型天線之電極„' 12和13設置於淨空區21之内部時’各電極 M398212 99年丨2月丨7曰修正替換頁 丨丨、12和13是藉由導通孔或導通體24，使第一電極 二條13與電路板2的峨饋人線22或·線23電性連接。 綜上所述，本創作之高輻射效率微贱線便是彻將各電極分別設置 於基體的表面或内部，並且藉由調整各電極的形狀或尺寸，或是各電極之 ：間的相對位置與距離、上下重疊區域的形狀、體積和面積狀態，來產生調 整天線頻寬和改變天線共振頻率與阻抗或其他天線特性的效果。 以上所述’係藉由實施例說明本創作之特點，其目的在使熟習該技術 鲁者能瞭解本創作之内容並據以實施，而非限定本創作之專利範圍，故凡其 他未脫離本創作所揭示之精神而完成之等效修飾或修改，仍應包含在以下 所述之申請專利範圍中。 【圖式簡單說明】 第1圖係本創作高輻射效率微型天線實施例-之立體示意圖。 第2圖係本創作高_效率微型天線實施例-之立體分解示意圖。 第3圖係本創作高_效率微型天線實施例—之回波損耗圖。 第4麟本鑛高H射效率_天補二之讀示意圖。 第5祕本創作高_效率微型天線實施例三之立體示意圖。 ，第6圖係本創作高輕射效率微型天線實施例四之立體示意圖。 第7圖係本創作高細效率微型天線實關五之立體示意圖。 第8圖係本創作减射效率微型天線實施例六之立體示意圖。 第9圖係本解高細鱗微型天線實施例七之立體示意圖。 第1〇圖係本鑛締射轉微敎線實關从立體示意圖。 第11圖係本創作^射轉微型天線實_九之俯視圖。 M398212 99年12月17日修正替換頁 第12圖係本創作高輻射效率微型天線實施例九之立體示意圖。 第13圖係本創作高輻射效率微型天線實施例十之立體示意圖。 第14圖係第13圖之俯視圖。 【主要元件符號說明】 10A 基體 10B 第二基體 10C 第三基體 101 第一表面 102 第二表面 103 第一側面 104 第二側面 11 第一電極 12 第二電極 12A 延伸部 13 第三電極 14 端電極 2 電路板 21 淨空區 22 訊號饋入線 23 接地線 24 導通孔或導通體The pole 2 further includes an extending portion 12A extending downward from the first electrode u, and the extending portion 12A forms an overlapping region with the capacitive effect between the first electrode U. Through such an arrangement, the embodiment can be in the first A capacitance value different from that of the fifth embodiment is generated between the electrode 1A and the second electrode 12, whereby a bandwidth effect different from that of the fifth embodiment or a characteristic for adjusting the antenna can be generated. Referring to Embodiment 9", as shown in Figures 11 and 12, this embodiment directly sighs the high radiation efficiency micro-antenna of the present invention to the "clean space" of the circuit board 2 (Shi La (10) squats on this - clearance When the area a board is installed, the area is reserved for any line or ground layer. The clear area can be used as the base of the micro antenna. Therefore, the board 2 can be used in the clearance area 21 The first electrode u, the second electrode 12, and the third electrode η are disposed on the front and back sides, and the electrodes 11 电极-electrode 12 and the third electrode 13 are directly connected to the circuit board 2 without the assistance of the terminal electrodes. The upper wire 22 and the ground wire 23 are connected to each other to achieve the effect of the process, material saving and assembly cost. Embodiment 10: The third embodiment and the plan show that the embodiment is a change of the embodiment IX. In the aspect, the high private-radiation efficiency is slightly 敎_transport 2, and 21, the domain is said that the first electric 'second electrode 12 and the third electrode 13 are not set to the surface of the net 21, when high. The electrode of the efficiency micro antenna „' 12 and 13 are disposed inside the clearance area 21' each electrode M398212 丨 丨 丨 曰 曰 曰 曰 曰 曰 曰 曰 曰 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 In summary, the high radiation efficiency micro-twisting line of the present invention is to completely set the electrodes on the surface or the inside of the substrate, and by adjusting the shape or size of each electrode, or the relative of each electrode: The position and distance, the shape, volume and area of the overlapping areas, to produce an effect of adjusting the antenna bandwidth and changing the antenna resonance frequency and impedance or other antenna characteristics. The above description describes the characteristics of the creation by way of example. The purpose is to enable those skilled in the art to understand the contents of the present invention and to implement it, and not to limit the scope of the patents of the present invention. Therefore, other equivalent modifications or modifications that have not been made without departing from the spirit of the present invention remain. It should be included in the scope of the patent application described below. [Simplified description of the drawings] Figure 1 is a perspective view of the high-radiation efficiency micro-antenna embodiment - Figure 2 is a high-efficiency Antenna embodiment - a three-dimensional decomposition diagram. Figure 3 is a high-efficiency micro-antenna embodiment of the present invention - the return loss diagram. The fourth Linben high H-efficiency _ Tian Bu 2 reading schematic. The fifth secret A three-dimensional schematic diagram of the third embodiment of the high-efficiency micro-antenna is created. The sixth figure is a three-dimensional schematic diagram of the fourth embodiment of the high-light-efficiency micro-antenna. The seventh figure is a three-dimensional diagram of the high-efficiency micro-antenna real-off five. Fig. 8 is a perspective view of the sixth embodiment of the micro-antenna of the reduction efficiency of the present invention. Fig. 9 is a perspective view of the seventh embodiment of the high-density micro-antenna of the present invention. The actual picture is from the three-dimensional diagram. The eleventh picture is the top view of the creation of the micro-antenna of the micro-antenna. The M398212 is revised on December 17, 1999. The 12th picture is the perspective view of the high-radiation efficiency micro-antenna embodiment. . Fig. 13 is a perspective view showing the tenth embodiment of the high radiation efficiency micro antenna of the present invention. Figure 14 is a plan view of Figure 13. [Main component symbol description] 10A base 10B second base 10C third base 101 first surface 102 second surface 103 first side 104 second side 11 first electrode 12 second electrode 12A extension 13 third electrode 14 terminal electrode 2 circuit board 21 clearance area 22 signal feed line 23 ground line 24 via or conductor