201203694 六、發明說明： 、 【發明所屬之技術領域】 本發明係關於一種天線，更具體而言，係關於一種利用一無線 通訊終端機（wireless communication terminal)之地線韓射之地線 輻射天線。 【先前技術】 天線係為一種可將存在於空氣中之射頻（radio frequency ; RF ) 訊號接收至一無線通訊終端機（或使用者裝置）中之裝置（或元 件），或係為一種可將存在於行動通訊終端機内之訊號傳送至外部 之裝置。換言之，天線係為一種用於無線通訊之基本元件。近來， 存在使行動通訊終端機輕薄化且配備有一更細小之天線結構之需 求。此外，隨著藉由無線通訊所收發之資料量增大，目前要求行 動通訊終端機配備有能提供更強效能之天線。 因此，已提出地線輻射天線作為一種用於滿足此種需求之裝 置。在本文中，地線輻射天線使用地線來輻射射頻訊號。更具體 而言，一先前技術天線之一輻射體係為一單獨的輻射體，該單獨 的輻射體係設置於行動電訊終端機之内部或之外部並佔據一大的 體積。然而，藉由使用該地線作為輻射體（該地線實質上係設置 於一無線通訊終端機中），可使得地線輻射天線之天線之尺寸具顯 著的縮減。 然而，甚至在地線輻射天線中，輻射體亦無法藉由僅使用地線 而完全發揮作用。因此，地線輻射天線額外地設置有一單獨的輻 201203694 射元件，該獨立的輻射元件與該地線一起執行輻射體之作用。 因此，先前技術之地線輻射天線之缺點在於，因輻射元件具有 一大之體積以及一複雜之結構，地線輻射天線之尺寸變大且天線 之製造製程變得非常複雜。 【發明内容】 本發明之目的 本發明之一目的係提供一種地線輻射天線，該地線輻射天線具 有一非常簡單之結構且亦表現出優異之輻射效能。 本發明之技術解決方案 基於地線天線本身之特性，本發明提供一種使用一電容性元件 之輻射體形成電路，該電容性元件可代替具有一複雜結構之輻射 元件。 另外，本發明亦提供一種饋入線路（或饋入電路），該饋入線路 可最大化輻射效能並同時具有一簡單結構。 如上所述，藉由使用'各具有一顯著簡化之結構的一輻射體形成 電路以及一饋入電路來製造天線，本發明能提供一種尺寸變小且 表現出優異輻射效能之天線。 本發明之效果 根據本發明之地線輻射天線之優點在於，該天線係由一非常簡 單之結構構成，藉此能夠減小該天線之尺寸。 此外，因其結構簡單，根據本發明之地線輻射天線可簡化製造 4 201203694 製程，藉此能夠顯著降低製造成本。 此外，根據本發明之地線輻射天線可具有一寬頻帶以及一多頻 帶（multi-band)之特性，並可提供使用者優異之轄射效能。 【實施方式】 在先前技術天線中，試圖藉由為天線單獨地配備一用於地線輻 射之輻射元件、並藉由改變該輻射元件之構造或結構來提高輻射 效能。更具體而言，試圖藉由利用一電容器及一電感器組合成一 兼具電感及電容之元件來實現一輻射體。 然而，本案申請人能夠發現，當利用地線之電感時，僅藉由將 電容器連接至地線便可製成一優異之地線輻射元件，而無須使用 一由一複雜結構構成之單獨元件。 為用作天線之輻射元件，具有電容之電容器與具有電感之電感 器應同時存在以形成一共振。本案亦發現，因地線提供產生共振 所需之電感，故僅需要電容器及地線便可執行輻射元件之功能， 而無須配備一用於提供電感之單獨元件。 然而，先前技術之地線輻射體無法有效利用地線所提供之電 感。因此，在先前技術中，試圖藉由配置具有一複雜結構且兼具 電容及電感之元件來產生共振。 相反，根據本發明，藉由能夠有效利用地線本身所提供之電感， 可配置一具有一簡單結構之輻射體來將電容器連接至地線，並可 提供一使用上述輻射體之天線。 第1圖例示根據本發明一第一實施例之一使用地線輻射之天線。 201203694 參照第i圖，根據本發明第一實施例之使用地線輕射之天線包 含一饋入部120、一地線10、一第一導線u、一元件15、一第二 導線16、電谷性元件13以及一第三導線14，其中該饋入部uo 係由一饋入源12以及一饋入傳輸線18構成。 地線10於一通訊裝置例如一行動通訊使用者終端機（或使用者 裝置）内提供-參考電|。—般而言，較佳使—使用者終端機地 線形成於一印刷電路板（printed circuit b〇ard ; pCB)中，使用者 裝置（或終端機）運作所需之電路裝置在該印刷電路板中相互組 合。根據本發明，除提供參考電壓外，地線1〇亦執行天線之一地 線輻射體之功能。該特性同等地適用於本發明之其他實施例，該 等其他實施例將於下文予以詳細說明。 根據本發明之第一實施例，饋入部120、第一導線u'元件15、 第二導線16、電容性元件π以及第三導線14共同地作為一饋入 電路而運作以激發該天線，俾可藉由天線輻射體而輻射一射頻訊 號。另外，第一導線11、元件15、第二導線16、電容性元件13 以及第三導線14協同地（共同地）作為一天線輻射體形成電路 (antenna radiator-forming circuit)而運作，該天線輻射體形成電 路能夠實際輻射該射頻訊號。更具體而言，根據本發明之第一實 施例’第一導線U、元件15、第二導線16、電容性元件13以及 第二導線14不僅係為該天線之饋入電路之部分，且亦為—輻射體 形成電路之部分。 —電容性 根據本發明之第一實施例’元件15可為一電感元件、 元件或一簡單導線。 6 201203694 根據本發明之第一實施例，饋入部120係由一共面波導（coplanar waveguide ; CPW)構成。然而，除該共面波導之外，在本發明中 亦可配備各種其他類型之饋入部。該特性同等地適用於本發明之 其他實施例。 根據本發明之第一實施例，該饋入電路係配置於一淨空區 (clearance area ) 100内。淨空區100係為使用者終端機地線10 内之一區域，地線10在該區域中之一部分已被移除。 根據本發明之第一實施例，較佳使該電容性元件為一集總電路 元件（lumped circuit element )，例如一晶片電容器。然而，除該 晶片電容器之外，在本發明之第一實施例中亦可使用一具有一常 規的電容性結構之電容性元件。此外，該電容性元件可由一單一 電容器構成，或可藉由將二或更多個電容器彼此連接而構成。 同時，根據本發明之第一實施例，為獲得一特定電容，電容性 元件13可使用多個元件之一組合。舉例而言，可使用一電容性元 件與一電感元件之一組合結構代替電容性元件13。 此外，在下文所述的本發明之其他實施例中，為獲得一特定電 容，電容性元件可使用多個元件之一組合。舉例而言，可使用一 電容性元件與一電感元件之一組合結構代替該電容性元件。 第2圖例示根據本發明一第二實施例之一使用地線輻射之天線。 參照第2圖，根據本發明第二實施例之使用地線輻射之天線包 含一饋入部220、一地線20、一第一導線21a、一第一元件25、 一第二導線21b、一電容性元件23、一第三導線24a、一第四導線 201203694 24b、一第二元件27以及一第五導線24c，其十該饋入部220係由 一饋入源22以及一饋入傳輸線28構成。 在本實施例中，饋入部220、第一導線21a、第一元件25、第二 導線21b、第四導線24b、電容性元件23以及第三導線24a共同 地作為一饋入電路而運作以激發該天線，俾可藉由該天線輻射體 輻射一射頻訊號。此外，第一導線21 a、第一元件25 '第二導線 21b、第四導線24b、電容性元件23以及第三導線2牦協同地（共 同地）作為一天線輻射體形成電路而運作，該天線輻射體形成電 路能夠實際輻射該射頻訊號。更具體而言，根據本發明之第二實 施例，第-導線2la、第一元件25、第二導線21b、第四導線挪、 電容性元件23以及第三導線24a不僅為該天線之饋入電路之部 分’且亦為一輻射體形成電路之部分。 同時，第五導線24c及第二元件27係為為達成本發明第一實施 例之阻抗匹配而增加之元件。 根據本發明之第二實施例，第—元件25可為—電感料、一電 容性元件或-簡單導線。此外，第二元件27可為—電感元件或一 根據本發明之第二實施例，該饋入電路係配置於—淨空區雇 200係為使用者終端機地線2G内之—區域地線 在该區域中之一部分已被移除。 =據本發明之第二實施例’較佳使該電諸元件為—集總電路 -件，例如-晶片電容器。然而’除該晶片電容器之外在本發 8 201203694 _ 汽jJ使用—具有一常規的電容性結構之電容性 凡件料’該電谷性疋件可由_單—電容器構成，或可藉由將 一或更多個電容器彼此連接而構成。 第3圖例示根據本發明—第三實施例之一使用地線轄射之天線。 參照第3圖，根據本發明第三實施例之使用地線轄射之天線包 含-饋入部320、一地線3〇、一第一導線3U、一第一元件”、 第一導線31b、-第一電容性元件33、一第三導線3知、一第四 導線34b、-第二元件37、_第五導線*、一第六導線36a、一 第二電容性元件39以及一第七導線36b，其中該饋入部320係由 一饋入源32以及一饋入傳輸線％構成。 在本貫k例中，饋入部32〇、第一導線3 i a、第—元件％、第二 導線Mb、第四導線34b、第-電容性元件33以及第三導線34a 同也作為第一饋入電路而運作以激發該天線，俾可藉由該天 線輻射體輻射一射頻訊號。 此外’第—導線3 la、第一元件35、第二導線31b、第四導線 3扑第一電容性元件33以及第三導線34a協同地（共同地）作 為第一天線輻射體形成電路而運作，該天線輻射體形成電路能 夠實際輻射該射頻訊號。 更具體而言，根據本發明之第三實施例，第一導線31&、第一元 —導線3lb、第四導線34b、第一電容性元件33以及第 一導線34a不僅係為該天線之饋入電路之部分，且亦為一輻射體 形成電路之部分。 201203694 另外，饋入部320、-第一導線3ia、第一元件35、第二導線31b、 第六導線36a、第二電容性元件39以及第七導線36b共同地作為 一第二鎖入電路而運作以激發該天線，俾可藉由天線輻射體輻射 一射頻訊號。 此外’第一導線31a、第一元件35、第二導線31b、第六導線 36a、第二電容性元件39以及第七導線36b協同地（共同地）作 為一第二天線輻射體形成電路而運作，該天線輻射體形成電路能 夠實際輻射該射頻訊號。 更具體而言，根據本發明之第三實施例，第一導線31a、第一元 件35、第二導線31b、第六導線36a、第二電容性元件39以及第 導線3 6b不僅係為該天線之馈入電路之部分，且亦為一賴射體 形成電路之部分。 根據本發明第三實施例之天線可因具有一雙天線轄射體形成電 路而達成一多頻帶特性。 同時第五導線34。及第二;^件37係為為達成阻抗匹配而增加 之元件。 根據本發明之第三實施例，第—元件35可為-電感元件、一電 容性元件或-簡單導線。此外，第二讀37可為—電感元件或一 簡單導線。 根據本發明之第三實施例，該馈入電路係配置於一淨空區靡 内：淨空區300係為使用者終端機地線3〇内之一區域，地線3〇 在該區域中之一部分已被移除。 201203694 根據本發明之第三實施例，較佳使該電容性元件為一集總電路 元件，例如一晶片電容器。然而，除該晶片電容器之外，在本發 明之第三實施例中亦可使用一具有一常規的電容性結構之電容性 元件。此外，該電容性元件13可由一單一電容器構成，或可藉由 將二或更多個電容器彼此連接而構成。 第4圖例示根據本發明一第四實施例之一使用地線輻射之天線。 儘管根據本發明第四實施例之天線具有與根據本發明第二實施 例之天線相同之結構，然而在根據本發明第四實施例之天線中未 形成有一單獨之淨空區。此外，根據本發明第四實施例之天線係 配置於一未被一地線40環繞之區域中。 第5圖例示根據本發明一第五實施例之一使用地線輻射之天線。 儘管根據本發明第五實施例之天線具有與根據本發明第三實施 例之天線相同之結構，然而在根據本發明第五實施例之天線中未 形成有一單獨之淨空區。此外，根據本發明第五實施例之天線係 配置於一未被一地線50環繞之區域中。 第6圖例示根據本發明一第六實施例之一使用地線輻射之天線。 如根據本發明第五實施例之天線一樣，儘管根據本發明第六實 施例之天線具有與根據本發明第三實施例之天線相同之基本結 構，然而在根據本發明第六實施例之天線中未形成有一單獨之淨 空區。此外，根據本發明第六實施例之天線係配置於一未被一地 線60環繞之區域中。 然而，不同於本發明之第五實施例，在根據本發明第六實施例 201203694 之天線中，一電容性元件63直接連接至地線60，且電容性元件 63並不與一用於連接一元件61與地線60之導線62交匯。 第7圖例示根據本發明一第七實施例之一使用地線輻射之天線。 儘管根據本發明第七實施例之天線具有與根據本發明第二實施 例之天線相同之基本結構，然而淨空區之形狀不同於根據本發明 第二實施例之天線。 更具體而言，根據本發明第二實施例之天線之淨空區200的三 側被地線20環繞，並且淨空區200僅有一側係為開口的。然而， 根據本發明第七實施例之天線之一淨空區700的全部四側皆被一 地線7 0環繞。 第8圖例示根據本發明一第八實施例之一使用地線輻射之天線。 儘管根據本發明第八實施例之天線具有與根據本發明第三實施 例之天線相同之基本結構，然而一淨空區800之形狀不同於根據 本發明第三實施例之天線。 更具體而言，根據本發明第三實施例之天線之淨空區300的三 側被地線30環繞，並且淨空區300僅有一側係為開口的。然而， 根據本發明第八實施例之天線之淨空區800的全部四側皆被一地 線80環繞。 如上所述，本發明之各該第二實施例、第四實施例以及第七實 施例皆屬於一具有相同基本連接之天線群組。然而，根據淨空區 之形狀、根據天線之一部分或整個天線是否形成於淨空區中、以 及根據天線是否形成於淨空區之外而定，各該第二實施例、第四 12 201203694 、 實施例以及第七實施例可被形成為具有一不同之形狀。因此，對 於每一相同之天線群組，藉由形成其中二側被地線環繞且二側向 外開口之一淨空區，並藉由將此種結構應用於本發明之每一實施 例，天線可被形成為具有除附圖所示形狀以外的各種不同之形狀。 因此，其中二側向外開口之淨空區亦可應用於各屬於相同天線 群組之本發明第三實施例、第五實施例、第六實施例以及第八實 施例。 【圖式簡單說明】 第1圖例示根據本發明一第一實施例之一使用地線輻射之天線； 第2圖例示根據本發明一第二實施例之一使用地線輻射之天線； 第3圖例示根據本發明一第三實施例之一使用地線輻射之天線； 第4圖例示根據本發明一第四實施例之一使用地線輻射之天線； 第5圖例示根據本發明一第五實施例之一使用地線輻射之天線； 第6圖例示根據本發明一第六實施例之一使用地線輻射之天線； 第7圖例示根據本發明一第七實施例之一使用地線輻射之天 線；以及 第8圖例示根據本發明一第八實施例之一使用地線輻射之天線。 【主要元件符號說明】 10、 20、30、40、50、60、70 ' 80 :地線 11、 21a、31a :第一導線 12、22、32 :饋入源 13 201203694 13、23 :電容性元件 14、 15、61 :元件 16、 18、28、38 :饋入傳輸線 24b 24c、34c :第五導線 25 ' 27、37 :第二元件 33 ： 36a :第六導線 36b 39 :第二電容性元件 62 ： 63 :電容性元件 24a、34a :第三導線 21b、31b :第二導線 、34b ··第四導線 35 :第一元件 第一電容性元件 :第七導線 導線 100、200、300、700、800 :淨空區 120、220、320 :饋入部 14201203694 VI. Description of the Invention: [Technical Field] The present invention relates to an antenna, and more particularly to a ground radiating antenna using a wireless communication terminal . [Prior Art] An antenna is a device (or component) that can receive a radio frequency (RF) signal existing in the air into a wireless communication terminal (or user device), or can be a The signal existing in the mobile communication terminal is transmitted to the external device. In other words, the antenna is a basic component for wireless communication. Recently, there has been a demand for a mobile communication terminal to be thin and light and equipped with a finer antenna structure. In addition, with the increase in the amount of data transmitted and received by wireless communication, mobile communication terminals are currently required to be equipped with antennas that provide higher performance. Therefore, a ground wire radiating antenna has been proposed as a device for satisfying such a demand. In this paper, ground-radiation antennas use ground wires to radiate RF signals. More specifically, one of the antennas of a prior art antenna is a single radiator that is disposed inside or outside the mobile telecommunications terminal and occupies a large volume. However, by using the ground wire as a radiator (which is substantially disposed in a wireless communication terminal), the size of the antenna of the ground radiation antenna can be significantly reduced. However, even in a ground-radiation antenna, the radiator cannot be fully functioned by using only the ground. Therefore, the ground radiating antenna is additionally provided with a separate spoke 201203694 radiating element which, together with the ground line, performs the action of the radiator. Therefore, the prior art ground radiating antenna has a drawback in that the size of the ground radiating antenna becomes large and the manufacturing process of the antenna becomes very complicated due to the large volume of the radiating element and a complicated structure. Disclosure of the Invention An object of the present invention is to provide a ground radiating antenna having a very simple structure and also exhibiting excellent radiation performance. Technical Solution of the Invention Based on the characteristics of the ground wire antenna itself, the present invention provides a radiator forming circuit using a capacitive element which can replace a radiation element having a complicated structure. In addition, the present invention also provides a feed line (or feed circuit) that maximizes radiation efficiency while having a simple structure. As described above, the present invention can provide an antenna which is small in size and exhibits excellent radiation performance by fabricating an antenna using a radiator forming circuit and a feeding circuit each having a significantly simplified structure. EFFECTS OF THE INVENTION An advantage of the ground radiating antenna according to the present invention is that the antenna is constructed by a very simple structure, whereby the size of the antenna can be reduced. In addition, because of its simple structure, the ground-radiation antenna according to the present invention can simplify the manufacturing process of 201203694, thereby significantly reducing manufacturing costs. Furthermore, the ground radiating antenna according to the present invention can have a wide frequency band and a multi-band characteristic, and can provide excellent nucleation performance for the user. [Embodiment] In the prior art antenna, it is attempted to improve the radiation efficiency by separately equipping the antenna with a radiating element for ground radiation and by changing the configuration or structure of the radiating element. More specifically, an attempt is made to realize a radiator by combining a capacitor and an inductor into an element having both inductance and capacitance. However, the applicant of the present invention can find that when the inductance of the ground wire is utilized, an excellent ground wire radiating element can be fabricated only by connecting the capacitor to the ground without using a separate component composed of a complicated structure. In order to use as a radiating element of an antenna, a capacitor having a capacitor and an inductor having an inductance should exist simultaneously to form a resonance. The case also found that since the ground wire provides the inductance required to generate resonance, only the capacitor and the ground wire are required to perform the function of the radiating element without having to provide a separate component for providing inductance. However, prior art ground radiators do not effectively utilize the inductance provided by the ground. Therefore, in the prior art, it has been attempted to generate resonance by arranging an element having a complicated structure and having both capacitance and inductance. In contrast, according to the present invention, by effectively utilizing the inductance provided by the ground wire itself, a radiator having a simple structure can be disposed to connect the capacitor to the ground, and an antenna using the above-described radiator can be provided. Fig. 1 illustrates an antenna using ground radiation according to a first embodiment of the present invention. 201203694 Referring to FIG. 1, an antenna for using a ground-light light according to a first embodiment of the present invention includes a feed portion 120, a ground line 10, a first wire u, an element 15, a second wire 16, and a valley. The element 13 and a third wire 14 are formed by a feed source 12 and a feed transmission line 18. The ground line 10 provides a reference power in a communication device such as a mobile communication user terminal (or user device). In general, it is preferred that the user terminal ground is formed in a printed circuit board (pCB), and the circuit device required for the operation of the user device (or terminal) is in the printed circuit. The boards are combined with each other. According to the present invention, in addition to providing a reference voltage, the ground line 1 执行 also performs the function of one of the antenna radiators. This feature is equally applicable to other embodiments of the invention, which will be described in detail below. According to the first embodiment of the present invention, the feeding portion 120, the first wire u' member 15, the second wire 16, the capacitive element π, and the third wire 14 collectively operate as a feed circuit to excite the antenna, An RF signal can be radiated by the antenna radiator. In addition, the first wire 11, the element 15, the second wire 16, the capacitive element 13, and the third wire 14 operate cooperatively (commonly) as an antenna radiator-forming circuit, the antenna radiation The body forming circuit is capable of actually radiating the RF signal. More specifically, according to the first embodiment of the present invention, the first wire U, the element 15, the second wire 16, the capacitive element 13, and the second wire 14 are not only part of the feeding circuit of the antenna, but also It is part of the circuit that forms the radiator. Capacitance The element 15 according to the first embodiment of the present invention may be an inductive element, an element or a simple wire. 6 201203694 According to a first embodiment of the present invention, the feed portion 120 is composed of a coplanar waveguide (CPW). However, in addition to the coplanar waveguide, various other types of feedthroughs can be provided in the present invention. This feature is equally applicable to other embodiments of the invention. According to a first embodiment of the invention, the feedthrough circuitry is disposed within a clearance area 100. The headroom 100 is an area within the user terminal ground 10 in which a portion of the ground 10 has been removed. According to a first embodiment of the invention, the capacitive component is preferably a lumped circuit element, such as a wafer capacitor. However, in addition to the wafer capacitor, a capacitive element having a conventional capacitive structure can also be used in the first embodiment of the present invention. Further, the capacitive element may be constituted by a single capacitor or may be constructed by connecting two or more capacitors to each other. Meanwhile, according to the first embodiment of the present invention, in order to obtain a specific capacitance, the capacitive element 13 can be combined using one of a plurality of elements. For example, a capacitive element can be replaced with a combination of a capacitive element and an inductive element. Moreover, in other embodiments of the invention described below, to obtain a particular capacitance, the capacitive element can be combined using one of a plurality of elements. For example, a capacitive element and a combination of one of the inductive elements can be used in place of the capacitive element. Fig. 2 illustrates an antenna using ground radiation according to a second embodiment of the present invention. Referring to FIG. 2, the antenna for ground radiation according to the second embodiment of the present invention includes a feed portion 220, a ground line 20, a first wire 21a, a first component 25, a second wire 21b, and a capacitor. The element 23, a third wire 24a, a fourth wire 201203694 24b, a second component 27, and a fifth wire 24c, the feed portion 220 is formed by a feed source 22 and a feed transmission line 28. In this embodiment, the feeding portion 220, the first wire 21a, the first member 25, the second wire 21b, the fourth wire 24b, the capacitive element 23, and the third wire 24a collectively operate as a feed circuit to excite The antenna can radiate an RF signal by the antenna radiator. Furthermore, the first wire 21 a, the first element 25 'the second wire 21b, the fourth wire 24b, the capacitive element 23 and the third wire 2牦 cooperatively (commonly) function as an antenna radiator forming circuit, which The antenna radiator forming circuit is capable of actually radiating the RF signal. More specifically, according to the second embodiment of the present invention, the first wire 21a, the first element 25, the second wire 21b, the fourth wire, the capacitive element 23, and the third wire 24a are not only fed to the antenna Part of the circuit 'and is also part of a radiator forming circuit. At the same time, the fifth wire 24c and the second member 27 are elements which are added to achieve the impedance matching of the first embodiment of the present invention. According to a second embodiment of the invention, the first element 25 can be an inductor, a capacitive element or a simple conductor. In addition, the second component 27 can be an inductive component or a second embodiment according to the present invention. The feedthrough circuitry is disposed in the clearing area 200, which is within the user terminal ground 2G - the regional ground is One part of the area has been removed. According to a second embodiment of the invention, the electrical components are preferably - lumped circuits - for example - wafer capacitors. However, 'in addition to the chip capacitor, the present invention is used in the present invention. The capacitor element having a conventional capacitive structure may be composed of a single-capacitor or may be One or more capacitors are connected to each other. Fig. 3 illustrates an antenna using a ground wire ray according to one of the third embodiments of the present invention. Referring to FIG. 3, an antenna using a grounding wire according to a third embodiment of the present invention includes a feeding portion 320, a grounding wire 3, a first wire 3U, a first component, a first wire 31b, and a first capacitive element 33, a third wire 3, a fourth wire 34b, a second component 37, a fifth conductor*, a sixth conductor 36a, a second capacitive component 39, and a seventh conductor 36b, wherein the feeding portion 320 is composed of a feed source 32 and a feed transmission line %. In the present example, the feed portion 32, the first wire 3 ia, the first component %, the second wire Mb, The fourth wire 34b, the first capacitive element 33 and the third wire 34a also operate as a first feedthrough circuit to excite the antenna, and the RF radiation can be radiated by the antenna radiator. La, the first element 35, the second wire 31b, the fourth wire 3, the first capacitive element 33, and the third wire 34a cooperatively (commonly) function as a first antenna radiator forming circuit, the antenna radiator Forming a circuit capable of actually radiating the RF signal. More specifically, according to the present In a third embodiment, the first wire 31&, the first element-wire 31b, the fourth wire 34b, the first capacitive element 33, and the first wire 34a are not only part of the feeding circuit of the antenna, but also A radiator is formed as part of the circuit. 201203694 In addition, the feeding portion 320, the first wire 3ia, the first member 35, the second wire 31b, the sixth wire 36a, the second capacitive element 39, and the seventh wire 36b collectively function as A second latching circuit operates to excite the antenna, and an RF signal can be radiated by the antenna radiator. Further, the first conductor 31a, the first component 35, the second conductor 31b, the sixth conductor 36a, and the second capacitor The sexual element 39 and the seventh conductor 36b cooperatively (commonly) function as a second antenna radiator forming circuit capable of actually radiating the radio frequency signal. More specifically, according to the present invention In the third embodiment, the first wire 31a, the first component 35, the second wire 31b, the sixth wire 36a, the second capacitive component 39, and the third wire 36b are not only part of the feeding circuit of the antenna, but also A portion of the emitter forming circuit. The antenna according to the third embodiment of the present invention can achieve a multi-band characteristic by having a dual antenna urging body forming circuit. Meanwhile, the fifth wire 34 and the second portion; An element added to achieve impedance matching. According to a third embodiment of the invention, the first element 35 can be an inductive element, a capacitive element or a simple wire. Further, the second read 37 can be an inductive element or According to a third embodiment of the present invention, the feeding circuit is disposed in a clearance area: the clearance area 300 is an area within the user terminal ground line 3, and the ground line 3 is One of the areas has been removed. 201203694 According to a third embodiment of the invention, the capacitive component is preferably a lumped circuit component, such as a wafer capacitor. However, in addition to the wafer capacitor, a capacitive element having a conventional capacitive structure can be used in the third embodiment of the present invention. Further, the capacitive element 13 may be constituted by a single capacitor or may be constructed by connecting two or more capacitors to each other. Fig. 4 illustrates an antenna using ground radiation according to a fourth embodiment of the present invention. Although the antenna according to the fourth embodiment of the present invention has the same configuration as the antenna according to the second embodiment of the present invention, a separate clearing area is not formed in the antenna according to the fourth embodiment of the present invention. Further, the antenna system according to the fourth embodiment of the present invention is disposed in an area not surrounded by a ground line 40. Fig. 5 illustrates an antenna using ground radiation according to a fifth embodiment of the present invention. Although the antenna according to the fifth embodiment of the present invention has the same configuration as the antenna according to the third embodiment of the present invention, a separate clearance area is not formed in the antenna according to the fifth embodiment of the present invention. Further, the antenna system according to the fifth embodiment of the present invention is disposed in an area not surrounded by a ground line 50. Fig. 6 illustrates an antenna using ground radiation according to a sixth embodiment of the present invention. Like the antenna according to the fifth embodiment of the present invention, although the antenna according to the sixth embodiment of the present invention has the same basic structure as the antenna according to the third embodiment of the present invention, in the antenna according to the sixth embodiment of the present invention A separate clearance area is not formed. Further, the antenna system according to the sixth embodiment of the present invention is disposed in an area not surrounded by a ground line 60. However, unlike the fifth embodiment of the present invention, in the antenna according to the sixth embodiment 201203694 of the present invention, a capacitive element 63 is directly connected to the ground line 60, and the capacitive element 63 is not used for connection with a Element 61 meets the conductor 62 of ground wire 60. Fig. 7 illustrates an antenna using ground radiation according to a seventh embodiment of the present invention. Although the antenna according to the seventh embodiment of the present invention has the same basic structure as the antenna according to the second embodiment of the present invention, the shape of the clearance area is different from that of the antenna according to the second embodiment of the present invention. More specifically, the three sides of the clearance area 200 of the antenna according to the second embodiment of the present invention are surrounded by the ground line 20, and only one side of the clearance area 200 is open. However, all four sides of one of the clear areas 700 of the antenna according to the seventh embodiment of the present invention are surrounded by a ground line 70. Fig. 8 illustrates an antenna using ground radiation according to an eighth embodiment of the present invention. Although the antenna according to the eighth embodiment of the present invention has the same basic structure as the antenna according to the third embodiment of the present invention, the shape of a clearance area 800 is different from that of the antenna according to the third embodiment of the present invention. More specifically, the three sides of the clearance area 300 of the antenna according to the third embodiment of the present invention are surrounded by the ground line 30, and only one side of the clearance area 300 is open. However, all four sides of the clearing area 800 of the antenna according to the eighth embodiment of the present invention are surrounded by a ground line 80. As described above, each of the second embodiment, the fourth embodiment, and the seventh embodiment of the present invention belongs to an antenna group having the same basic connection. However, depending on the shape of the clearance area, depending on whether a portion of the antenna or the entire antenna is formed in the clearance area, and depending on whether the antenna is formed outside the clearance area, each of the second embodiment, the fourth 12 201203694, the embodiment, and The seventh embodiment can be formed to have a different shape. Thus, for each of the same antenna groups, by forming one of the clearing regions in which the two sides are surrounded by the ground and the two sides are open outward, and by applying such a structure to each embodiment of the present invention, the antenna It can be formed to have various shapes other than the shapes shown in the drawings. Therefore, the clearance area in which the two sides are outwardly opened can also be applied to the third embodiment, the fifth embodiment, the sixth embodiment, and the eighth embodiment of the present invention which belong to the same antenna group. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an antenna using ground radiation according to a first embodiment of the present invention; FIG. 2 illustrates an antenna using ground radiation according to a second embodiment of the present invention; The figure illustrates an antenna using ground radiation according to a third embodiment of the present invention; FIG. 4 illustrates an antenna using ground radiation according to a fourth embodiment of the present invention; and FIG. 5 illustrates a fifth according to the present invention. One of the embodiments uses an antenna for ground radiation; FIG. 6 illustrates an antenna using ground radiation according to a sixth embodiment of the present invention; and FIG. 7 illustrates the use of ground radiation according to one of the seventh embodiments of the present invention. An antenna; and FIG. 8 illustrates an antenna using ground radiation according to an eighth embodiment of the present invention. [Description of main component symbols] 10, 20, 30, 40, 50, 60, 70 ' 80 : Ground wire 11, 21a, 31a: First wire 12, 22, 32: Feeding source 13 201203694 13, 23: Capacitive Element 14, 15, 61: element 16, 18, 28, 38: feed-in transmission line 24b 24c, 34c: fifth wire 25' 27, 37: second element 33: 36a: sixth wire 36b 39: second capacitive Element 62: 63: Capacitive element 24a, 34a: third wire 21b, 31b: second wire, 34b · fourth wire 35: first element first capacitive element: seventh wire lead 100, 200, 300, 700, 800: clearance area 120, 220, 320: feed part 14