M364286 五、新型說明： 【新型所屬之技術領域】 本創作是有關於一種天線，特別是有關於一種可降 天線的諧振頻率，達成天線小型化之圓極化天線結構者 【先前技術】 - 現今各式電子產品已普遍設置可收發無線訊號之天 -來提昇電子產品的無線接取資訊及行動通訊能力’例如 φ GPS導航系統，但是接收GPS訊號的應用產品’為能夠 合小型化及輕量化的結構設計，天線普遍内建於GPS應 產品内部’以取代外接式天線，但是内建式天線小型化 後’該天線的諧振頻率會升高，進而造成GPS訊號傳輸 益不佳等問題，故針對GPS天線的小型化設計，仍可達 良好的訊號傳輸效益，實為GPS天線設計中極需克服解 之問題。 • 【新型内容】 有鑑於上述先前技術所產生的問題，本創作之主要 的為提供一種圓極化天線結構，可更有效降低天線的諧 -頻率，達成天線小型化與良好的訊號傳輸效益。 . 本創作之另—目的，係將降頻導體設置與輻射導體 邊連結，藉由改變降頻導體之長度或寬度或位置，可更 效調整天線的諧振頻率或極化方向，並能防止降頻導體 接地導體之訊號干擾，進而得以解決先前技術所產生的 題並具有功效上之增進。 低 線 符 用 之 效 成 決 目 振 周 有 受 問 3 M364286 為讓本創作之上述目的、特徵和優點能更明顯易懂， 下文特舉一較佳實施例，並配合所附圖式，作詳細說明如 下： 【實施方式】 請參閱第1 、2 、3圖所示，其繪示依照本創作圓極 -化天線結構之示意圖，該天線1包含：一高介電常數之基 .底2、一位於基底2底部21之接地導體3、一位於基底2 φ 頂部22之輻射導體4以及貫穿基底2頂、底部22、21並與 輻射導體4電性連結之信號饋入導體5所構成，其特徵在 於：輻射導體4周邊延伸有至少一降頻導體41至基底2側 部23，藉以降低天線1的諧振頻率，進而達到天線1小型 化之目的者。 降頻導體41亦可由輻射導體4各側邊分別延伸出至少 一降頻導體41。 降頻導體41亦可由輻射導體4的二個相對側邊分別延 • 伸出至少一降頻導體41者。 請參閱第4 、5 、6圖所示，降頻導體41亦可由輻射 導體4各側邊或邊角處分別延伸出至少一降頻導體41，且 . 降頻導體41可為任意構形者。 功效說明： 本創作天線之降頻導體，係設置與輻射導體周邊連結 ，故降頻導體與接地導體具有適當的分隔，如此可避免接 地導體的輻射電流干擾降頻導體之訊號傳輸，以使天線的 4 M364286 諧振頻率能夠更有效的， 降頫道挪π * 八银小型化之目的’又 導體权置與輻射導體周邊連結， 長度或嘗谇—、7 $ 稽由改變降頻導體之 寬度或位置，可調整天線的諧 整體達到無结^ % # 自振頻率或極化方向， j無線δ孔號傳輸效益接異以芬士 用天唆& # + 杈昇以及有效縮減電子設備使 線所佔空間之實用功效者。 且文：上所述實施例所揭示纟，係藉以具體說明本創作， 型創作透過特定的術語進行說明，當不能以此限定本新 本創作之專利範圍；熟悉此1員技術領域之人士當可在瞭解 目的，精神與原則後對其進行變更與修改而達到等效之 而此等變更與修改 —μ丄ρ所述之申請專 利範圍邮田 皆應涵蓋於如后所 所界定範疇中。M364286 V. New description: [New technical field] This creation is about an antenna, especially for a circularly polarized antenna structure that can reduce the resonant frequency of the antenna and achieve the miniaturization of the antenna. [Prior Art] - Nowadays Various types of electronic products have been widely installed to send and receive wireless signals - to enhance the wireless access information and mobile communication capabilities of electronic products, such as φ GPS navigation system, but the application products that receive GPS signals are capable of miniaturization and weight reduction. The structural design, the antenna is generally built in the GPS should be inside the product to replace the external antenna, but after the built-in antenna is miniaturized, the resonant frequency of the antenna will increase, which will cause problems such as poor GPS signal transmission. Aiming at the miniaturized design of the GPS antenna, it still achieves good signal transmission efficiency, and it is extremely difficult to overcome the solution in the design of the GPS antenna. • [New content] In view of the problems caused by the above prior art, the main purpose of the present invention is to provide a circularly polarized antenna structure, which can more effectively reduce the harmonic frequency of the antenna, achieve antenna miniaturization and good signal transmission efficiency. Another purpose of this creation is to connect the down-converter conductor to the side of the radiating conductor. By changing the length or width or position of the down-conducting conductor, the resonant frequency or polarization direction of the antenna can be more effectively adjusted and prevented from falling. The signal interference of the frequency conductor grounding conductor can solve the problems generated by the prior art and have an improvement in efficiency. The use of low-line symbols is a matter of concern. 3 M364286 In order to make the above objects, features and advantages of the present invention more obvious, the following is a preferred embodiment and is in accordance with the drawings. The detailed description is as follows: [Embodiment] Please refer to the first, second, and third figures, which illustrate a schematic diagram of a circular-polarized antenna structure according to the present invention. The antenna 1 includes: a high dielectric constant base. a ground conductor 3 located at the bottom 21 of the substrate 2, a radiation conductor 4 located at the top 22 of the substrate 2 φ, and a signal feeding conductor 5 penetrating the top, bottom 22, 21 of the substrate 2 and electrically connected to the radiation conductor 4, It is characterized in that at least one down conductor 41 is extended around the radiation conductor 4 to the side portion 23 of the substrate 2, thereby reducing the resonance frequency of the antenna 1, thereby achieving the purpose of miniaturizing the antenna 1. The downconverter 41 may also extend at least one down conductor 41 from each side of the radiating conductor 4. The downconverting conductor 41 may also extend from the opposite sides of the radiating conductor 4 to extend at least one of the downconverting conductors 41, respectively. Referring to Figures 4, 5, and 6, the downconverter 41 may also extend at least one of the down conductors 41 from the sides or corners of the radiating conductor 4, and the down conductor 41 may be any shape. . Efficacy description: The down-converting conductor of the antenna is connected to the periphery of the radiation conductor, so the frequency-reduction conductor and the grounding conductor are properly separated, so that the radiation current of the grounding conductor can be prevented from interfering with the signal transmission of the down-conducting conductor, so that the antenna The 4 M364286 resonant frequency can be more efficient, lowering the pitch π * the purpose of the eight-silver miniaturization 'and the conductor right and the radiation conductor perimeter connection, the length or taste -, 7 $ to change the width of the down-conductor or Position, adjustable antenna harmonics to achieve no junction ^ % # self-vibration frequency or polarization direction, j wireless δ hole number transmission benefit is different from the use of Fenns 唆天唆 &# + 杈 以及 and effective reduction of electronic equipment to make the line The practical function of the space occupied. And the texts disclosed in the above-mentioned embodiments are used to specify the creation, and the type creation is explained by specific terms. When it is not possible to limit the scope of the patent of this new creation; those who are familiar with the technical field of this member Changes and modifications may be made by understanding the purpose, spirit and principles, and such changes and modifications—the patent application scope described in μ丄ρ shall be covered by the scope as defined later.
S M364286 "【圖式簡單說明】 第1圖：本創作一較佳實施例所提供的圓極化天線結構之 組合立體圖。 第2圖：本創作一較佳實施例所提供的圓極化天線結構之 分解立體圖。 第3圖：本創作一較佳實施例所提供的圓極化天線結構之 - 頂面示意圖。 .第4圖：本創作第二較佳實施例所提供的圓極化天線結構 > 之組合立體圖。 第5圖··本創作第三較佳實施例所提供的圓極化天線結構 之組合立體圖。 第6圖：本創作第四較佳實施例所提供的圓極化天線結構 之組合立體圖。 【主要元件符號說明】 1 天 線 2 基 底 2 1 底 部 2 2 頂 部 2 3 側 部 3 接 地 導 體 4 輻 射 導 體 4 1 降 頻 導 體 5 饋 入 導 體 6S M364286 " [Simple Description of the Drawings] FIG. 1 is a combined perspective view of a circularly polarized antenna structure provided by a preferred embodiment of the present invention. Fig. 2 is an exploded perspective view showing the structure of a circularly polarized antenna provided by a preferred embodiment of the present invention. Fig. 3 is a top plan view showing the structure of a circularly polarized antenna provided by a preferred embodiment of the present invention. Fig. 4 is a perspective view showing the combination of the circularly polarized antenna structure > provided by the second preferred embodiment of the present invention. Fig. 5 is a perspective view showing the combination of the circularly polarized antenna structure provided by the third preferred embodiment of the present invention. Fig. 6 is a perspective view showing the combination of the circularly polarized antenna structure provided by the fourth preferred embodiment of the present invention. [Main component symbol description] 1 day line 2 base 2 1 bottom 2 2 top 2 3 side 3 grounding conductor 4 radiating conductor 4 1 downconverting conductor 5 feeding conductor 6