523963 A7 ___ B7 五、發明説明（1 ) 月背景 1.發明領域 本發明係關於一種天線，詳言之，係關於一種用於多頻 操作之單偶極平板天線（Monopole ) 0 2 ·先前技術說明 無線通訊於近年來快速發展，進而使得相關通訊產品也 朝著多樣化和多頻的趨勢進展，故多頻天線的需求更是近 來的趨勢。而除了多頻之外，尚要兼顧其應用上之攜帶 性、低成本及美觀方便，故多頻操作之單偶極平板天線相 當具有產業實用價值。 目前習知的單偶極天線的設計中，有將輻射金屬片設計 成一整片的圓形或橢圓形，或是採用堆疊、寄生，或是使 用高介電係數微波基板等方式來達到單一寬頻，用以涵蓋 GSM(890-960MHz)、DCS(1710-1880MHz)、PCS(185(M990MHz) 及IMT-2000 (1920-2170MHz)等四個無線通訊系統的頻宽，但 習用之單偶極天線仍有高度過高（高於〇 ·丨個共振波長）的 缺點。 因此，有必要提供一種創新且具進步性的單偶極平板天 線，以解決上述問題。 發明概述 本發明之目的在於提供一種用於多頻操作之單偶極平板 天線，包括··一基底及一輻射金屬片。該輻射金屬片形成 於該基底之一第一表面，該輻射金屬片具有一饋入點及至 少一狹缝，該狹縫由該輻射金屬片之一邊緣延伸至該輻射 I紙張尺度適财S S家標準(CNS) A4規格(21G X 297公爱ί ------— 523963 AT B7 五、發明説明（2 金屬片之内部，俾在該輻射金屬片上形成一第一路徑及一 第二路徑。其中該第一路徑之長度比該第二路徑之長度較 長，且該第二路徑被第一路徑所環繞。該第一路徑同時操 作於四分之一及二分之一波長的共振模態，該第二路徑則 操作於四分之一波長之模態，以共振出涵蓋gsm(89〇_ 960MHz)、DCS(1710-1880MHz)、PCS(1850-1990MHz)及 IMT- 2000 (1920-2170MHz)四個無線通訊系統之操作頻帶。 因此，本發明之單偶極平板天線僅利用一印製於該基板 上具有狹縫之輻射金屬片，即可達到多頻操作的優點。故 本發明之單偶極平板天線製作容易，可達到降低成本之目 的，並且能縮小天線之高度。 圖式簡述 圖1為本發明之單偶極平板天線之側視圖； 圖2為本發明用於單偶極平板天線之輻射金屬片之結構 圖； 圖3為本發明之單偶極平板天線之返回損失實驗量測結果 圖； '口 圖4 a 1及圖4 a - 2為本發明之單偶極平板天線操作於 9 0 0MHz之輕射場型； ； 圖4b-丨及圖4b_2為本發明之單偶極平板天線操 1 8 0 0 MHz之輻射場型； 於 極平板天線搡作於 極平板天線操作於 圖4c-l及圖4c_2為本發明之單偶 1 9 0 0 M 3H z之輕射場型； 圖4d-l及圖4d-2為本發明之單偶 本紙張尺度適财® ®家料^Ί^(210Χ297公釐广 523963 A7523963 A7 ___ B7 V. Description of the invention (1) Background of the invention 1. Field of the invention The present invention relates to an antenna, and in particular, to a single dipole flat-panel antenna (Monopole) for multi-frequency operation. 0 2 · Prior art It shows that wireless communication has developed rapidly in recent years, and then related communication products have also progressed toward the trend of diversification and multi-frequency. Therefore, the demand for multi-frequency antennas is a recent trend. In addition to multi-frequency, it is necessary to take into account its portability, low cost, and aesthetic convenience. Therefore, a single-dipole flat-panel antenna with multi-frequency operation has considerable industrial practical value. In the conventional design of a single dipole antenna, the radiating metal sheet is designed as a whole circle or ellipse, or stacked, parasitic, or a high dielectric constant microwave substrate is used to achieve a single broadband frequency. , Used to cover the bandwidth of four wireless communication systems such as GSM (890-960MHz), DCS (1710-1880MHz), PCS (185 (M990MHz) and IMT-2000 (1920-2170MHz), but the conventional single dipole antenna It still has the disadvantage of being too high (above the resonance wavelength). Therefore, it is necessary to provide an innovative and progressive single dipole flat antenna to solve the above problems. SUMMARY OF THE INVENTION The object of the present invention is to provide a A single dipole flat antenna for multi-frequency operation includes a base and a radiating metal sheet. The radiating metal sheet is formed on a first surface of the base, the radiating metal sheet has a feed point and at least one narrow The slit extends from one edge of the radiant metal sheet to the radiant I paper size SS Home Standard (CNS) A4 specification (21G X 297 public love) -------- 523963 AT B7 V. Invention Explanation (2 Inside the metal sheet, A first path and a second path are formed on the radiating metal sheet. The length of the first path is longer than the length of the second path, and the second path is surrounded by the first path. The first path is operated simultaneously Resonance modes of quarter and half wavelengths, the second path operates at a quarter wavelength mode to resonate to cover gsm (89〇_960MHz), DCS (1710-1880MHz), PCS (1850-1990MHz) and IMT-2000 (1920-2170MHz) four wireless communication system operating frequency bands. Therefore, the single dipole flat antenna of the present invention uses only a radiating metal sheet with a slit printed on the substrate The advantages of multi-frequency operation can be achieved. Therefore, the single-dipole flat antenna of the present invention is easy to manufacture, can achieve the purpose of reducing costs, and can reduce the height of the antenna. Brief Description of the Drawings Figure 1 is a single-dipole flat plate of the present invention Side view of the antenna; Figure 2 is a structural diagram of a radiating metal sheet for a single-dipole flat-panel antenna of the present invention; Figure 3 is an experimental measurement result of the return loss of the single-dipole flat-panel antenna of the present invention; '口 图 4 a Figures 1 and 4 a-2 are the single pairs of the present invention The flat-plate antenna operates at 900 MHz; Figure 4b- 丨 and Figure 4b_2 show the single-dipole flat-antenna antenna of the present invention operating at 180 MHz. The flat-panel antenna operates on a polar plate. The antenna is operated in Figure 4c-1 and Figure 4c_2 as the light field type of the single even 190 0 M 3H z of the present invention; Figure 4d-1 and Figure 4d-2 are the single even paper of the present invention. Household materials ^ Ί ^ (210 × 297 mm wide 523963 A7
2 0 5 0 MHz之輻射場型； 圖5 a為本發日η 4 , <早偶極平板天線之G S Μ頻帶内增益對頻 率之關係圖； 圖5 b為本發明之單偶極平板天線之d c s頻帶内增益對頻 率之關係圖； ^ 圖5 c為本發明之單偶極平板天線之p c s頻帶内增益對頻 率之關係圖； " Θ 5d為本發明之單偶極平板天線之iMTjQQo頻帶内增 益對頻率之關係圖；及 圖6a至6d為本發明用於單偶極平板天線之輻射金屬片之 其他實施例結構圖。 立件符號說明 1 :單偶極平板天線 1 1 :輻射金屬片 1 1 1 :饋入點 1 1 2 :狹縫 113 :第一子輕射金屬片 114 :第二子輻射金屬片 1 1 5 :第一電流路徑 1 1 6 :第二電流路徑 1 2 :接地金屬片 13 :微帶饋線 14 :基底 1 4 1 :第一表面 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公董Ϊ5 523963 A7 B7Radiation field pattern at 2 0 50 MHz; Figure 5a is a graph of gain vs. frequency in the GS M band of the early dipole flat antenna η 4, < Figure 5b is a single dipole flat plate of the present invention Figure 5c shows the relationship between the gain and frequency in the dcs band of the antenna; Figure 5c shows the relationship between the gain and frequency in the pcs band of the single dipole flat antenna of the present invention; " Θ 5d is the single dipole flat antenna of the present invention A diagram of the relationship between gain and frequency in the iMTjQQo frequency band; and FIGS. 6a to 6d are structural diagrams of other embodiments of a radiating metal sheet for a single dipole flat antenna of the present invention. Description of standing parts symbols 1: single-dipole flat antenna 1 1: radiating metal sheet 1 1 1: feed point 1 1 2: slit 113: first sub-light-emitting metal sheet 114: second sub-radiating metal sheet 1 1 5: First current path 1 1 6: Second current path 1 2: Ground metal sheet 13: Microstrip feeder 14: Substrate 1 4 1: First surface This paper size is applicable to China National Standard (CNS) A4 specifications (210X 297 public directors) Ϊ5 523963 A7 B7
五、發明説明 1 4 2 ·弟—表面 6 1 ·•輻射金屬片 6 1 1 :狹缝 6 1 2 :狹縫 62 :輻射金屬片 63 :輻射金屬片 6 4 ··輻射金屬片 發明詳述 參考圖1及圖2，本蘇3日> w , +發明（早偶極平板天線1包括：一轉 射金屬片1 1、一接地+ ® μ： ,。 ^ ^ 也鱼屬片12、一微帶饋線13及一基底 1 4。該基底1 4用以支樘兮紅人w ^ LL „ 一 又得3輻射金屬片1 1，其材質為微波 基底。該基底14具有—筮一本I" AA. 士 J 弟 表面141及一第二表面142 , 該第二表面1 4 2係相對於該第一表面工4 }。 該輻射金屬片11形成於該基底14之第一表面141，該輻 射至屬片1 1具有一饋入點i i i及一狹縫i i 2。微帶饋線i 3 於該輻射金屬片11之饋入點lu連接至該輻射金屬片u， 使信號傳遞至該輻射金屬片u。該狹缝112由該輻射金屬 片11之一邊緣延伸至該輻射金屬片丨1之内部，使得該輻射 金屬片11被區分為一第一子輻射金屬片113及一第二子輻 射金屬片1 1 4。 在第子輻射金屬片113上為一第一電流路徑115 (如圖 2之實線箭頭），在第二子輻射金屬片ιΐ4上為一第二電流 路徑1 1 6 (如圖2之虛線箭頭）。其中該第一電流路徑i i 5 本紙張尺度適用中國國豕標準(CNS)八4規格(210X 297公爱y '~ ' 523963 A7 B7 五、發明説明（5 ) 之長度大於該第二電流路徑1 1 6之長度。且該第二路徑被 第一路徑所環繞。該第一電流路徑1 1 5之長度約為 900MHz共振頻率的四分之一波長，因此可共振出涵蓋 GSM ( 890-960MHZ )的操作頻帶。 該第一電流路徑1 1 5的二分之一波長共振模態及第二電 流路徑1 1 6的四分之一波長共振模態合成一個大的操作頻 寬，涵蓋 DCS ( 17HM880MHZ ) 、PCS ( 1850-1990MHz )及 IMT-2000 ( 1920-2170 MHz)三個系統所需之頻寬。 因此，第一電流路徑1 1 5之第一子輻射金屬片1 1 3同時操 作於四分之一及二分之一波長的共振模態，而第二電流路 徑1 ί 6之第二子輻射金屬片1 1 4則操作於四分之一波長的 共振模態，而同時能共振出涵蓋GSM ( 890-960MHz )、DCS ( 1710-1880MHZ)、PCS ( 1850-1990MHZ)及 IMT-2000 ( 1920-2170 MHz)四個無線通訊系統所需之頻帶。 因此，本發明之單偶極平板天線1僅利用一印製於該基板 上1 4之具有狹缝之輻射金屬片1 1，即可達到多頻操作的優 點。故本發明之單偶極平板天線1製作容易，可達到降低 成本之目的。且本發明之單偶極平板天線1之高度約為1 2 公釐，小於0.0 4倍天線最低操作頻率之波長，具有小型化 之優點。V. Description of the invention 1 4 2 · Brother—Surface 6 1 · • Radiation metal sheet 6 1 1: Slit 6 1 2: Slit 62: Radiation metal sheet 63: Radiation metal sheet 6 4 ·· Detailed description of the radiation metal sheet With reference to Fig. 1 and Fig. 2, Ben Su on the 3rd > w, + invention (early dipole flat antenna 1 includes: a transmissive metal sheet 1 1, a ground + ® μ:, ^ ^ also genus sheet 12, A microstrip feeder 13 and a substrate 14. The substrate 14 is used to support the red celebrity w ^ LL „3 radiation metal sheets 1 1 are obtained, and the material is a microwave substrate. The substrate 14 has- I " AA. J surface 141 and a second surface 142, the second surface 1 4 2 is relative to the first surface 4}. The radiation metal sheet 11 is formed on the first surface 141 of the substrate 14, The radiant sheet 11 has a feed point iii and a slit ii 2. A microstrip feeder i 3 is connected to the radiant metal sheet u at a feed point lu of the radiant metal sheet 11 so that a signal is transmitted to the radiation. The metal sheet u. The slit 112 extends from an edge of the radiating metal sheet 11 to the inside of the radiating metal sheet 丨 1, so that the radiating metal sheet 11 is divided into a first sub-radiation. The metal sheet 113 and a second sub-radiation metal sheet 1 1 4. A first current path 115 (as shown by the solid line arrow in FIG. 2) is on the first sub-radiation metal sheet 113, and on the second sub-radiation metal sheet ιΐ4 is A second current path 1 1 6 (as shown by the dashed arrow in Fig. 2). The first current path ii 5 is a paper size that conforms to China National Standard (CNS) 8-4 specification (210X 297 public love y '~' 523963 A7 B7 V. The description of the invention (5) is longer than the length of the second current path 1 1 6 and the second path is surrounded by the first path. The length of the first current path 1 1 5 is about 900 MHz The quarter-wavelength, so it can resonate to cover the operating band of GSM (890-960MHZ). The half-wavelength resonant mode of the first current path 1 1 5 and the quarter of the second current path 1 1 6 The one-wavelength resonance mode synthesizes a large operating bandwidth, covering the required bandwidth of three systems: DCS (17HM880MHZ), PCS (1850-1990MHz), and IMT-2000 (1920-2170MHz). Therefore, the first current path 1 1 5 The first sub-radiation metal sheet 1 1 3 operates on quarter and half waves simultaneously Long resonance mode, and the second sub-radiation metal sheet 1 1 4 of the second current path 1 ί 6 operates at a quarter-wavelength resonance mode, and at the same time can resonate to cover GSM (890-960MHz), DCS (1710-1880MHZ), PCS (1850-1990MHZ) and IMT-2000 (1920-2170 MHz) four frequency bands required for wireless communication systems. Therefore, the single-dipole flat-panel antenna 1 of the present invention can achieve the advantages of multi-frequency operation by using only a radiating metal sheet 11 with a slit 14 printed on the substrate. Therefore, the single-dipole flat antenna 1 of the present invention is easy to manufacture and can achieve the purpose of reducing costs. In addition, the height of the single-dipole flat-panel antenna 1 of the present invention is about 12 mm, which is less than 0.04 times the wavelength of the minimum operating frequency of the antenna, which has the advantage of miniaturization.
參考圖3，本發明之單偶極平板天線1所產生之頻寬為 833-975MHZ及1675-2240MHZ (依據7 · 3 dB反射損失阻抗頻 寬之定義）。因此，可包含GSM ( 890-960MHz ) 、DCS (171(M880MHz )、PCS ( 185(M990MHz )及 IMT-2000 ( 1920- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公^)8 _ 523963Referring to FIG. 3, the frequency bandwidth generated by the single dipole flat panel antenna 1 of the present invention is 833-975MHZ and 1675-2240MHZ (based on the definition of the impedance bandwidth of 7 · 3 dB reflection loss). Therefore, it can include GSM (890-960MHz), DCS (171 (M880MHz), PCS (185 (M990MHz)), and IMT-2000 (1920- This paper standard applies to China National Standard (CNS) A4 specification (210X297mm ^) 8_ 523963
217〇 MHz )之操作頻寬。 ’’參考圖耗]至圖4d_2 ’其中圖4a]、圖4b]、圖 4C_1及圖4d]均為X-y平面輕射場型，圖4a-2、圖4b_ -圖4c-2及圖4d_2均為y-z平面韓射場型。圖仏^及圖 ,為本發月之單偶極平板天線操作於900MHz之輻射場 型’圖4b]及圖4b_2為本發明之單偶極平板天線操作於 1 8 0 0MHz之輻射場型，圖4c]及圖4c_2為本發明之單偶 極平板天線操作於19〇〇MHz之輻射場型，圖及圖 4 d - 2為本發明之單偶極平板天線操作於2 〇 μ H z之輻射 場型。其顯示本發明之單偶極平板天線應用於G請、 DCS、PCS及lMT-2000之輕射場型良好。 參考圖5a至5d，其中圖5&為本發明之單偶極平板天線之 GSM頻帶内增益對頻率之關係圖，圖^為本發明之單偶 極平板天線之D C S頻帶内增益對頻率之關係圖，圖5 c為本 發明之單偶極平板天線之pcs頻帶内增益對頻率之關係 圖’圖5d為本發明之單偶極平板天線之imT-2〇〇〇頻帶内 增JOL對頻罕之關係圖。因此，本發明之單偶極平板天線確 能涵盍GSM、DCS、PCS及IMT-2000之操作頻率，並適 用於該四個無線通訊系統。 參考圖6a至6d，其顯示本發明用於單偶極平板天線之輕 射金屬片之其他實施例結構圖。在圖6a中，輻射金屬片6工 具有二狹縫611及612，在輕射金屬片61上亦造成二電流 路极。在圖6b至6d中，輻射金屬片62、63、64均僅具有 一狹縫，且輻射金屬片6 2、6 3、6 4之狹缝寬度可為非固 本紙張尺度適用中㈣家料(CNS) M規格(21G x 297公釐γ - 523963217〇 MHz). '' Reference figure consumption] to Figure 4d_2 'where Figure 4a], Figure 4b], Figure 4C_1 and Figure 4d] are Xy plane light field type, Figure 4a-2, Figure 4b_-Figure 4c-2 and Figure 4d_2 are all yz plane Korean shooting field type. Figures 仏 ^ and Figures show the radiation field pattern of a single-dipole flat-panel antenna operating at 900 MHz in this issue. Figure 4b] and Figure 4b_2 show the radiation field-type of a single-dipole flat-panel antenna operating at 1 800 MHz. Figure 4c] and Figure 4c_2 show the radiation field pattern of the single-dipole flat-panel antenna of the present invention operating at 1900 MHz, and Figure 4d and Figure 2 d-2 show the single-dipole flat-panel antenna of the present invention operating at 20 μHz Radiation field type. It shows that the single dipole flat antenna of the present invention has a good light field type applied to GZ, DCS, PCS, and 1MT-2000. Referring to Figs. 5a to 5d, Fig. 5 & shows the relationship between gain and frequency in the GSM band of the single dipole flat antenna of the present invention, and Fig. ^ Shows the relationship between gain and frequency in the DCS band of the single dipole flat antenna of the present invention Figure, Figure 5c is the graph of gain vs. frequency in the pcs band of the single dipole flat antenna of the present invention 'Figure 5d is the increase of JOL pair frequency in the imT-2OO band of the single dipole flat antenna of the present invention Relationship diagram. Therefore, the single-dipole flat-panel antenna of the present invention can indeed cover the operating frequencies of GSM, DCS, PCS, and IMT-2000, and is applicable to the four wireless communication systems. Referring to Figs. 6a to 6d, there are shown structural diagrams of other embodiments of the light-emitting metal sheet of the present invention for a single dipole flat panel antenna. In Fig. 6a, the radiating metal sheet 6 has two slits 611 and 612, and also has two current circuit electrodes on the light-emitting metal sheet 61. In FIGS. 6b to 6d, the radiating metal sheets 62, 63, and 64 each have only one slit, and the width of the slits of the radiating metal sheets 6 2, 6, 3, and 6 can be non-solid paper. (CNS) M size (21G x 297 mmγ-523963
疋值，在輻射金屬片6 2、ό 3、6 4上均造成二電流路徑。 利用上述實施例輻射金屬片之單偶極平板天線，均能涵蓋 GSM、DCS、PCS及ΙΜΤ-2000之操作頻率，並適用於該 四個無線通訊系統。 上述實施例僅為說明本發明之原理及其功效，而非限制 本發明。因此，習於此技術之人士對上述實施例進行修改 及變化仍不脫離本發明之精神。本發明之權利範園應如後 述之申請專利範圍所列。 ¥紙張尺度適用中國國家標準(CNS) A4規格(21〇x 297公全)1ϋThe threshold value causes two current paths on the radiating metal sheets 6 2, ό 3, 6 4. The single-dipole flat-panel antenna using the radiating metal sheet of the above embodiments can cover the operating frequencies of GSM, DCS, PCS, and IMT-2000, and is applicable to the four wireless communication systems. The above-mentioned embodiments are only for explaining the principle of the present invention and its effects, but not for limiting the present invention. Therefore, those skilled in the art can modify and change the above embodiments without departing from the spirit of the present invention. The right scope of the invention should be listed in the patent application scope mentioned later. ¥ Paper size applies to Chinese National Standard (CNS) A4 size (21〇x 297 total) 1ϋ