1232006 玫、發明說明： 【發明所屬之技術領域】 本發明有關一種寬頻通訊設備疊積式單極天線，尤指一種小 型化疊積天線，其具有優異之增益及頻寬特性。 【先前技術】 按，全球通訊設備產業隨著電信市場，尤其是手機業的快速 發展，近年來一直呈現穩定成長。由於近代多頻手機需求快速增 加，使得此類通訊設備之天線亦需能操作兩種以上之頻率。 同時，現代手機為方便隨身攜帶使用，其體積亦大幅縮小， 更造成天線小型化之巨大壓力，主要即在於天線小型化會使其增 益（gain)及頻寬（bandwidth)受到限制。 為使天線小型化，及使天線能以小長度隱設於手機内部，近 來以縮小體積之内藏式天線取代傳統外露式線圈天線已是一種 無可避免之趨勢。要使此類多頻天線能以小型化設於通訊設備内 部，其設計課題包括能產生寬頻、能與饋入線進行簡易之阻抗匹 配以及具有縮小之外形體積，但現有之寬頻天線顯然難以達到上 述5又什4求及能具有良好之收發訊功能。 【發明内容】 本發明之主要目的即在提供—種寬頻通訊設_積式單極 天線，其具有優異之增益及頻寬特性，並使其操作頻率可同時適 用於碼分多址系統、泛歐行動電話系統、數位通訊系統、個人通 5 1232006 訊系統、獻手齡缺_妨纽祕。 ' 為達上揭目的，本發明天線由下社設有多數構^，每一 構成片與構似之間設有可婦阻抗随u征，·構成片與 構成片間形成-體式連接頸部，並於其底端預設一 饋入線；上述 各構成片以其疊積高度調整所需寬頻。 則·行實施例中，上述多數構成片由下向上共同形成一片體 狀，或將其加工疊積為筒狀。 於較佳實施例中’上述多數構成片由下向上漸縮小面積以共 · 同形成-三角片體狀’並可進—步加工疊積成三角錐筒狀。 於可行實施例中，上述多數構成片為多角形片體狀，並可進 一步折疊成多角邊筒狀。 【實施方式】 本發明之新穎性及其他特點將於配合以下附圖較佳實施例 之詳細說明而趨於明瞭。 | 首先請參第1圖，於此一實施例中，該單極天線10能以金 屬材料（如銅材）沖製成型為一三角狀輻射元件，其操作頻率可 包括碼分多址系統（CDMA，824-894MHz)、泛歐行動電話系統 (GSM，880-960MHZ)、數位通訊系統（DCS，171(M880MHZ)、 個人通訊系統（PCS，1850-1990MHZ)、個人手機系統（PHS， 1905-1920MHz)及寬頻碼分多址系統（WCDMA， 2010-2025MHz) 〇 6 1232006 於上述本發明第一實施例中，單極天線ίο由下而上設有多 數構成片11、12…每一構成片與構成片之間設有可調整式間 距13。於此一實施例中，間距13設於天線1〇之兩側邊分別由 外向内延伸入一段未到達片體中心線14位置之設定距離，以形 成構成片與構成片間之連接頸部15。上述單極天線1〇並可於其 底端預設一饋入線16。 同時，於此一較佳實施例中，由下而上所設置之多數構成片 11 12 疋由下向上漸縮小面積以共同形成一三角片體狀。以使 用於一般手機為例，上述圖示實施例天線1〇之總長度L約在 130mm，底部寬度w約在18mm，當每一構成片η、12之高 度約為8mm時，其間距13 (可調整）則約在〇_5mm左右；同時， 饋入線16約可設為5mm。 上述圖示實施例天線10之阻抗頻寬及其阻抗匹配可經由構 成片與構成片間之間距13不同大小加以調整，其基本共振模式 可設定產生於約在900MHz，同時，整個天線10長度能以3/4波 長之共振頻率加以決定。 如第2圖所示，此一第二實施例顯示將上述第一實施例（即 第1圖）予以折疊加工成筒狀（此一實施例為三角錐筒狀），其 相同構件均示以相近之標號。此一實施例天線100同樣設有多數 構成片110、120…-、可調整式間距130、連接頸部150及饋入線 160，並透過複折（multi-folded)加工方式將其彎折疊積成小高 度（約10mm)。整個天線1〇〇因而可如第3圖所示般將其裝設連 7 1232006 接於如圖示行動電話電路板20。 於第4圖所示之本發明第三實施例中，該天線1〇如之每一構 成片110a、120a--可設為同樣以所需間距及頸部15加連接成一 體之多角形片體疊積天線。於第5醜示本發明第四實施例使用 與上述第二實施例相近但略有不同多角形之疊積天線1〇〇b，其以 與上述第二實施例相類似之加工方式將其折疊成較小高度（約 20mm)之多角邊筒狀。 本發明依上述結構由於可透過構成片間之間距調整阻抗匹 泰 配（impedancematching)，以及能以疊積高度之調整以取得所需 寬頻（broadbandwidth)，當以如上述之三角錐筒狀（第2圖）於 全球通訊系統頻率（824-2025MHZ)進行測試時，如第6圖所示， 其駐波比（VSWR)於780-2000MHz頻寬下均小於或等於2 5， 相當理想。 第7A、7B圖及第8A、8B圖分麵示如上述本發明分別於 824 MHz及2025MHz進行測試所取得之輻射場型（瓜出此如 φ patterns)圖。於824 MHz時，Ε平面（第从圖）之最大增益 (maximum gain)為0.69dBi，Η平面（第7B圖）之最大增益則 為0_86dBi ;依此等輻射場型可看出其在H平面具有非常優異之 全向性輻射（omni-directional radiation)功能。於 2〇25MHz 時， E平面（第8A圖）之最大增益為〇.43dBi，Η平面（第8B圖） 之最大增益則為2.1涵，可看出其在η平面接近全向性輕射。 本發明依上述天線設計因研透過構別間之耻調整阻 8 1232006 抗匹配，以及能以疊積高度調整所需寬頻，其因而具有優異之增 益及頻寬特性。 以上所舉實施例僅用為方便說明本發明並非加以限制，如上 述實施例雖以手機為例，但此一設計當然亦可運用於其他無線通 訊設備，在不離本發明精神範疇，熟悉此一行業技藝人士就此所 可作之各種簡易變形與修飾，均仍應含括於以下申請專利範圍 中〇 【圖式簡單說明】 第1圖係本發明第一實施例平面圖； 第2圖係本發明第二實施例立體圖； 第3圖係第2圖裝設於電路板之平面圖； 第4圖係本發明第三實施例平面圖； 第5圖係係本發明第四實施例立體圖； 第6圖係本發明駐波比測試圖形； 第7A及7B圖係本發明在824MHz下之E平面及Η平面之輻 射場型圖；以及 第8Α及8Β圖係本發明在2〇25ΜΗζ卞I Ε平面及Η平面之 輻射場型圖。 1232006 圖式中標號說明： 10——天線 11、12——構成片 13——間距 14------中心線 15——連接頸部 16——饋入線 100——天線 110、120——構成片 130——間距 150—…連接頸部 160——饋入線1232006 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a stacked monopole antenna for a broadband communication device, particularly a miniaturized stacked antenna, which has excellent gain and bandwidth characteristics. [Previous technology] According to the rapid development of the telecommunications market, especially the mobile phone industry, the global communications equipment industry has been showing steady growth in recent years. Due to the rapid increase in the demand of modern multi-band mobile phones, the antennas of such communication equipment must also be capable of operating more than two frequencies. At the same time, modern mobile phones have been greatly reduced in size for the convenience of carrying them around, which has also caused tremendous pressure on the miniaturization of the antenna, mainly because the miniaturization of the antenna will limit its gain and bandwidth. In order to miniaturize the antenna and allow the antenna to be concealed inside the mobile phone with a small length, recently, it has become an unavoidable trend to replace the traditional exposed coil antenna with a built-in antenna with a reduced size. To make this type of multi-frequency antenna miniaturized inside the communication equipment, the design issues include the ability to generate a wide frequency band, simple impedance matching with the feed line, and a reduced external volume, but the existing wide-band antennas are clearly difficult to achieve 5 and even 4 seek to have a good transceiver function. [Summary of the invention] The main purpose of the present invention is to provide a kind of wideband communication device_product type monopole antenna, which has excellent gain and bandwidth characteristics, and makes its operating frequency suitable for CDMA systems European mobile phone system, digital communication system, personal communication 5 1232006 messaging system, hand-aged age 'In order to achieve the purpose of disclosure, the antenna of the present invention is provided with a plurality of structures ^, the impedance between each component and the structure is provided with a u-sign, and the component and the component form a neck-body connection , And a feed line is preset at the bottom end thereof; each of the above-mentioned constituent pieces adjusts the required broadband frequency with its stacked height. Then, in the embodiment, the above-mentioned plurality of constituent pieces are collectively formed into a single body shape from the bottom to the top, or stacked and processed into a cylindrical shape. In a preferred embodiment, 'the above-mentioned plurality of constituent pieces gradually decrease in area from bottom to top to form a common-triangular sheet shape' and can be further processed to be stacked into a triangular pyramid shape. In a feasible embodiment, most of the above-mentioned constituent pieces are in the shape of a polygonal sheet body, and can be further folded into a polygonal side cylindrical shape. [Embodiment] The novelty and other features of the present invention will become clearer with the detailed description of the preferred embodiments of the following drawings. Please refer to FIG. 1 first. In this embodiment, the monopole antenna 10 can be formed into a triangular radiating element from a metal material (such as copper), and its operating frequency may include a code division multiple access system. (CDMA, 824-894MHz), Pan-European mobile phone system (GSM, 880-960MHZ), digital communication system (DCS, 171 (M880MHZ), personal communication system (PCS, 1850-1990MHZ), personal mobile phone system (PHS, 1905 -1920MHz) and wideband code division multiple access system (WCDMA, 2010-2025MHz) 〇6 1232006 In the above-mentioned first embodiment of the present invention, the monopole antenna is provided with a plurality of constituent pieces 11, 12 from the bottom to the top. An adjustable gap 13 is provided between the sheet and the constituent sheet. In this embodiment, the gap 13 is provided on both sides of the antenna 10 and extends from the outside to the inside to a set distance which does not reach the position of the center line 14 of the sheet. In order to form the connecting piece 15 between the constituent piece and the constituent piece, the above-mentioned monopole antenna 10 can be preset with a feed line 16 at the bottom end thereof. At the same time, in this preferred embodiment, from bottom to top The majority of the constituent pieces 11 12 设置 are gradually reduced from the bottom to the top to form a common shape. Into a triangular sheet. Taking a general mobile phone as an example, the total length L of the antenna 10 in the illustrated embodiment is about 130 mm, and the bottom width w is about 18 mm. When the height of each of the constituent pieces η, 12 is about 8 mm At this time, the pitch 13 (adjustable) is about 0-5mm; meanwhile, the feed line 16 can be set to about 5mm. The impedance bandwidth of the antenna 10 and the impedance matching of the antenna 10 in the illustrated embodiment can be obtained through the component sheet and the component sheet. The interval 13 can be adjusted in different sizes, and its basic resonance mode can be set to be generated at about 900 MHz. At the same time, the length of the entire antenna 10 can be determined at a resonance frequency of 3/4 wavelength. As shown in Figure 2, this second The embodiment shows that the first embodiment (the first figure) is folded into a cylindrical shape (this embodiment is a triangular cone shape), and the same components are shown with similar reference numerals. The antenna 100 in this embodiment is also the same. It is provided with a plurality of constituent pieces 110, 120 ...-, an adjustable pitch 130, a connection neck 150 and a feed line 160, and it is folded into a small height (about 10 mm) by a multi-folded processing method. The entire antenna 100 can thus be seen in Figure 3. As shown in the figure, its installation connector 7 1232006 is connected to the mobile phone circuit board 20 as shown in the figure. In the third embodiment of the present invention shown in FIG. 4, each of the antennas 10a and 110a, 120a-- It can be set to a polygonal chip stacked antenna that is also connected integrally with the required pitch and the neck 15. In the fifth example, the fourth embodiment of the present invention uses a polygon that is similar to the second embodiment but slightly different. The stacked antenna 100b is folded into a polygonal tube with a small height (approximately 20 mm) in a processing manner similar to that of the second embodiment. According to the above structure, the present invention can adjust impedance matching through the inter-chip distance, and can adjust the stacked height to obtain the desired broadband bandwidth. (Figure 2) When testing at the global communication system frequency (824-2025MHZ), as shown in Figure 6, its standing wave ratio (VSWR) is less than or equal to 25 at the 780-2000MHz bandwidth, which is quite ideal. Figures 7A and 7B and Figures 8A and 8B show the radiation field patterns (such as φ patterns) obtained by testing the present invention at 824 MHz and 2025 MHz, respectively, as described above. At 824 MHz, the maximum gain in the E-plane (figure from the figure) is 0.69dBi, and the maximum gain in the Η-plane (figure 7B) is 0_86dBi; according to these radiation field patterns, it can be seen that it is in the H-plane Has very good omni-directional radiation (omni-directional radiation) function. At 2025MHz, the maximum gain of the E-plane (Figure 8A) is 0.43dBi, and the maximum gain of the Η-plane (Figure 8B) is 2.1 C. It can be seen that it is close to the isotropic light shot in the η-plane. According to the above-mentioned antenna design, the present invention adjusts the resistance through the shame between the structures, and can adjust the required broadband with the stacked height, which has excellent gain and bandwidth characteristics. The above-mentioned embodiments are only used to facilitate the description of the present invention and are not limited. For example, although the above-mentioned embodiment uses a mobile phone as an example, this design can of course be applied to other wireless communication devices. Without departing from the spirit of the present invention, be familiar with this one. Various simple deformations and modifications that can be made by those skilled in the art in this regard should still be included in the scope of the following patent applications. [Simplified illustration of the drawings] Figure 1 is a plan view of the first embodiment of the present invention; Figure 2 is the present invention A perspective view of the second embodiment; FIG. 3 is a plan view of FIG. 2 mounted on a circuit board; FIG. 4 is a plan view of a third embodiment of the present invention; FIG. 5 is a perspective view of a fourth embodiment of the present invention; The standing wave ratio test pattern of the present invention; Figures 7A and 7B are radiation pattern diagrams of the E plane and the Η plane at 824 MHz of the present invention; and Figures 8A and 8B are the 205 plane and 发明 plane of the present invention at 2025MΗζ 卞 I Plane radiation field pattern. 1232006 Description of the symbols in the drawing: 10——antennas 11, 12—constituent sheet 13—pitch 14 —---- center line 15—connection neck 16—feed line 100—antennas 110, 120— —Construction piece 130—Pitch 150 —... Connecting neck 160—Feeding line