TWI382594B - Loop antenna - Google Patents
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- TWI382594B TWI382594B TW97143387A TW97143387A TWI382594B TW I382594 B TWI382594 B TW I382594B TW 97143387 A TW97143387 A TW 97143387A TW 97143387 A TW97143387 A TW 97143387A TW I382594 B TWI382594 B TW I382594B
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Description
本發明係有關一種天線，特別是一種可伸縮的環形天線。The present invention relates to an antenna, and more particularly to a retractable loop antenna.
隨著科技的進步，無線通訊系統的發展帶來生活上諸多便利。其中，無線通訊系統的重要元件之一便是天線。將天線裝設於無線通訊裝置上，發射器將電壓或電流信號轉換為無線信號，藉由天線將無線信號以輻射形式在空中傳播。另一方面，天線也可接收空中的無線信號，轉換為電壓或電流後再經由無線通訊裝置進行處理，以達到無線傳輸的目的。With the advancement of technology, the development of wireless communication systems has brought many conveniences in life. Among them, one of the important components of the wireless communication system is the antenna. The antenna is mounted on a wireless communication device, and the transmitter converts the voltage or current signal into a wireless signal, and the wireless signal is transmitted in the air in the form of radiation by the antenna. On the other hand, the antenna can also receive wireless signals in the air, convert them into voltages or currents, and then process them via the wireless communication device to achieve the purpose of wireless transmission.
由於，無線通訊的發展使得手持行動裝置，例如：行動電話(mobile phone)、個人數位助理(PDA)或智慧型手機(smart phone)等，皆為現代人帶來生活上的便利性，而手持行動裝置的收訊好壞與天線有著密不可分的關係。由於，天線為傳送與接收電磁波的窗口，係為收發無線訊號的重要裝置，因此天線設計的好壞，關係到無線通訊裝置的傳輸效能。Because of the development of wireless communication, handheld mobile devices, such as mobile phones, personal digital assistants (PDAs) or smart phones, bring convenience to modern people, while handheld The reception of mobile devices is inextricably linked to the antenna. Since the antenna is a window for transmitting and receiving electromagnetic waves, it is an important device for transmitting and receiving wireless signals. Therefore, the design of the antenna is related to the transmission performance of the wireless communication device.
然而，隨著電子產品逐漸朝向輕薄化與微型化的趨勢邁進時，手持行動裝置的體積也受到影響而日益縮小。當手持行動裝置的體積縮小，同時表示手持行動裝置中的天線，所分配到之佈局空間將受到限制。在手持行動裝置內部有限的空間，所設計出來的天線效率自然會受到影響，而使得天線效率不好，進而影響通訊品質。However, as electronic products move toward the trend of thinning and miniaturization, the size of handheld mobile devices is also being affected and shrinking. When the volume of the handheld mobile device is reduced and the antenna in the handheld mobile device is indicated, the allocated layout space will be limited. In the limited space inside the handheld mobile device, the designed antenna efficiency will naturally be affected, which makes the antenna inefficient and affects the communication quality.
有鑑於此本發明提出一種環形天線，且該環形天線為可伸縮式。當本發明所提出之環形天線裝設於手持行動裝置內，可將環形天線利用伸縮的方式來提高天線效率，如此可改善手持裝置日益縮小的天線空間而對收訊所造成的影響。In view of the above, the present invention proposes a loop antenna, and the loop antenna is telescopic. When the loop antenna proposed by the present invention is installed in a handheld mobile device, the loop antenna can be expanded and contracted to improve the antenna efficiency, thereby improving the impact of the shrinking antenna space of the handheld device on the receiving.
本發明提出一種環形天線，包含：基板、第一輻射部、第一連接部、第二連接部及第二輻射部。基板具有第一表面與第二表面，且第一表面上具有接地面。第一輻射部一端設置於第一表面且鄰近該端之基板具有饋入點，另一端設置於第二表面，而形成環形。第一連接部具有第一端與第二端，第一端設置於第一表面且耦接於接地面。第二連接部具有第三端與第四端，第三端設置於第二表面且經由基板耦接於第一輻射部。第二輻射部係以滑動方式設置於第一連接部之第二端與第二連接部之第四端之間，用以調整與第一輻射部所形成之環形輻射路徑。The invention provides a loop antenna, comprising: a substrate, a first radiating portion, a first connecting portion, a second connecting portion and a second radiating portion. The substrate has a first surface and a second surface, and the first surface has a ground plane. One end of the first radiating portion is disposed on the first surface and the substrate adjacent to the end has a feeding point, and the other end is disposed on the second surface to form a ring shape. The first connecting portion has a first end and a second end. The first end is disposed on the first surface and coupled to the grounding surface. The second connecting portion has a third end and a fourth end, and the third end is disposed on the second surface and coupled to the first radiating portion via the substrate. The second radiating portion is disposed between the second end of the first connecting portion and the fourth end of the second connecting portion in a sliding manner for adjusting the annular radiation path formed by the first radiating portion.
本發明亦提出一種環形天線，包含：基板、第一輻射部、第一連接部、第二連接部、第二輻射部、匹配電路。基板具有第一表面與第二表面與饋入點。第一輻射部一端設置於第一表面且另一端設置於第二表面，而形成環形。第一連接部具有第一端與第二端，第一端設置於第一表面且經由基板而接地。第二連接部具有第三端與第四端，第三端設置於第二表面且經由基板耦接於第一輻射部。第二輻射部係以滑動方式設置於第一連接部之第二端與第二連接部之第四端之間，用以調整與第一輻射部所形成之環形輻射路徑。匹配電路耦接於第一輻射部，用以匹配第一輻射部與第二輻射部。The invention also provides a loop antenna, comprising: a substrate, a first radiating portion, a first connecting portion, a second connecting portion, a second radiating portion, and a matching circuit. The substrate has a first surface and a second surface and a feed point. The first radiating portion is disposed at one end on the first surface and at the other end on the second surface to form a ring shape. The first connecting portion has a first end and a second end, and the first end is disposed on the first surface and grounded via the substrate. The second connecting portion has a third end and a fourth end, and the third end is disposed on the second surface and coupled to the first radiating portion via the substrate. The second radiating portion is disposed between the second end of the first connecting portion and the fourth end of the second connecting portion in a sliding manner for adjusting the annular radiation path formed by the first radiating portion. The matching circuit is coupled to the first radiating portion for matching the first radiating portion and the second radiating portion.
有關本發明的較佳實施例及其功效，茲配合圖式說明如後。Preferred embodiments of the present invention and their effects are described below in conjunction with the drawings.
請同時參照「第1A圖」為環形天線之第一實施例示意圖(一)，與「第1C圖」為環形天線之第一實施例剖面圖。本發明所提出之環形天線包含：一第一輻射部10、一第二輻射部20、一基板30、一第一連接部40、一第二連接部50。Please refer to FIG. 1A as a schematic diagram (1) of the first embodiment of the loop antenna, and FIG. 1C is a cross-sectional view of the first embodiment of the loop antenna. The loop antenna provided by the present invention comprises: a first radiating portion 10, a second radiating portion 20, a substrate 30, a first connecting portion 40, and a second connecting portion 50.
基板30具有一第一表面32與一第二表面34。其中，基板30可為手持行動裝置，例如：行動電話、個人數位助理或智慧型手機等之印刷電路板(PCB)。第一輻射部10一端設置於第一表面32，且位於該端附近的基板30上具有饋入點(如「第2A圖」中所示)，而另一端設置於第二表面34。由「第1A圖」中所示可知，第一輻射部10於基板30的第一表面32與第二表面34之間形成環形，且第一輻射部10為固定的設置於基板30，因此第一輻射部10屬於固定式環型輻射部。The substrate 30 has a first surface 32 and a second surface 34. The substrate 30 can be a handheld mobile device, such as a printed circuit board (PCB) such as a mobile phone, a personal digital assistant, or a smart phone. One end of the first radiating portion 10 is disposed on the first surface 32, and the substrate 30 located near the end has a feeding point (as shown in "FIG. 2A") and the other end is disposed on the second surface 34. As shown in FIG. 1A, the first radiating portion 10 forms a ring shape between the first surface 32 and the second surface 34 of the substrate 30, and the first radiating portion 10 is fixedly disposed on the substrate 30, so A radiating portion 10 belongs to a stationary ring type radiating portion.
由「第1C圖」中所示可知，第一連接部40具有一第一端41與一第二端42，其中第一端41設置於第一表面32且位於第一端41的第一表面32上具有接地面(圖中未示)，使第一端41耦接於接地面。第二連接部50具有一第三端51與一第四端52，第三端51設置於第二表面34且耦接於第一輻射部10。其中，第一連接部40可採用彈性頂針(pogo pin)的設計方式，使第一連接部40耦接第二輻射部20之處(亦即第二端42)為頂針，如此可讓第二輻射部20與第一連接部40藉由頂針而電性導通。同樣的，第二連接部50也可採用彈性頂針的設計方式，使第二連接部50耦接第二輻射部20之處(亦即第四端52)為頂針，如此可讓第二輻射部20與第二連接部50藉由頂針而電性導通。As shown in FIG. 1C, the first connecting portion 40 has a first end 41 and a second end 42. The first end 41 is disposed on the first surface 32 and is located on the first surface of the first end 41. The 32 has a ground plane (not shown) for coupling the first end 41 to the ground plane. The second connecting portion 50 has a third end 51 and a fourth end 52 . The third end 51 is disposed on the second surface 34 and coupled to the first radiating portion 10 . The first connecting portion 40 can adopt a design of a pogo pin, so that the first connecting portion 40 is coupled to the second radiating portion 20 (that is, the second end 42) is a thimble, so that the second connecting portion can be used. The radiation portion 20 and the first connection portion 40 are electrically connected by a ejector pin. Similarly, the second connecting portion 50 can also adopt a design manner of the elastic thimble, so that the second connecting portion 50 is coupled to the second radiating portion 20 (ie, the fourth end 52) as a thimble, so that the second radiating portion can be made. The second connecting portion 50 is electrically connected to the second connecting portion 50 by a ejector pin.
第二輻射部20係以滑動方式設置於第一連接部40之第二端42與第二連接部50之第四端52之間。由「第1A圖」中所示可知，第二輻射部20可在第一連接部40與第二連接部50之間伸縮滑動，因此相對於第一輻射部20屬於固定式環型輻射部，而第二輻射部20便屬於移動式環型輻射部。The second radiating portion 20 is slidably disposed between the second end 42 of the first connecting portion 40 and the fourth end 52 of the second connecting portion 50. As can be seen from the "Fig. 1A", the second radiating portion 20 can be telescopically slidable between the first connecting portion 40 and the second connecting portion 50, and therefore belongs to the fixed loop type radiating portion with respect to the first radiating portion 20, The second radiating portion 20 belongs to the mobile ring type radiating portion.
請同時參照「第1A圖」與「第1B圖」，由兩圖比較可知，「第1A圖」為第二輻射部20伸縮之前的環形天線示意圖，而「第1B圖」為第二輻射部20伸縮之後的環形天線示意圖。於此，第二輻射部20與第一輻射部10兩者可共同形成整體環形天線之環形輻射路徑，而藉由滑動第二輻射部20可用以調整環形輻射路徑。如「第1A圖」拉伸之前的環形天線，其環形輻射路徑較短，而「第1B圖」拉伸之後的環形天線，其環形輻射路徑較長。Please refer to "1A" and "1B" at the same time. It can be seen from the comparison of the two figures that "1A" is a schematic diagram of the loop antenna before the second radiating portion 20 expands and contracts, and "1B" is the second radiating portion. 20 loop diagram of the loop antenna after telescoping. Here, the second radiating portion 20 and the first radiating portion 10 may together form an annular radiating path of the integral loop antenna, and the sliding of the second radiating portion 20 may be used to adjust the annular radiating path. For example, the loop antenna before stretching in "Phase 1A" has a short annular radiation path, and the loop antenna after stretching in "1B" has a long annular radiation path.
上述之第二輻射部20可包含：一支撐件22與一軟性印刷電路板(flexible printed circuit，FPC)24。支撐件22由非金屬導體的材質所構成。相對的，軟性印刷電路板24由金屬導體的材質所構成。如「第1A圖」中所示，軟性印刷電路板24貼附於支撐件22靠近第一連接部40與第二連接部50之側。由於，支撐件22並非導體為單純用以支撐軟性印刷電路板24，因此即使軟性印刷電路板24貼附於支撐件22，兩者也不會產生訊號的干擾。The second radiating portion 20 may include a support member 22 and a flexible printed circuit (FPC) 24. The support 22 is made of a material of a non-metallic conductor. In contrast, the flexible printed circuit board 24 is made of a material of a metal conductor. As shown in "FIG. 1A", the flexible printed circuit board 24 is attached to the side of the support member 22 close to the first connecting portion 40 and the second connecting portion 50. Since the support member 22 is not a conductor for simply supporting the flexible printed circuit board 24, even if the flexible printed circuit board 24 is attached to the support member 22, there is no signal interference between the two.
天線的特性中，當輻射部的電氣長度越長，所產生的天線效能會越好，但由於天線所裝設的通訊裝置之空間有限，因此無法無限的擴展輻射部之電氣長度。因此，本發明提出第一輻射部10與第二輻射部20的電氣長度其最佳者至少為1/4波長(λ)。Among the characteristics of the antenna, the longer the electrical length of the radiating portion, the better the antenna performance will be. However, due to the limited space of the communication device installed in the antenna, the electrical length of the radiating portion cannot be infinitely expanded. Therefore, the present invention proposes that the electrical length of the first radiating portion 10 and the second radiating portion 20 is at least 1/4 wavelength (λ).
請參照「第2A圖」，該圖所示為環形天線之第二實施例示意圖(一)。於第二實施例中更包含一匹配電路，於此匹配電路可包含一第一匹配單元62與一第二匹配單元64。Please refer to "2A", which shows a schematic diagram (1) of a second embodiment of a loop antenna. In the second embodiment, a matching circuit is further included, and the matching circuit can include a first matching unit 62 and a second matching unit 64.
首先，簡單說明匹配(match)之功用。每一天線皆具有其工作頻率點，舉例說明，假設天線的理想工作頻率點為2.4GHz，但有時天線實際產生的工作頻率點位在2.35GHz或2.45GHz等，此時偏離正常工作頻率點2.4GHz的2.35GHz或2.45GHz即為頻偏點。而匹配電路便可用以修正頻偏點，使頻偏點可調整回所需的正常工作頻率點。於此，第一匹配單元62與第二匹配單元64可由電容或電感等元件所組成，其中電容可將工作頻率往高頻方向調整，而電感可將工作率往低頻方向調整。此外，匹配電路也具有使環形天線可達到50歐姆阻抗匹配的功用。First, briefly explain the function of the match. Each antenna has its operating frequency point. For example, it is assumed that the ideal operating frequency of the antenna is 2.4 GHz, but sometimes the actual operating frequency of the antenna is at 2.35 GHz or 2.45 GHz, etc., and the deviation from the normal operating frequency point. The 2.4GHz 2.35GHz or 2.45GHz is the frequency offset point. The matching circuit can be used to correct the frequency offset point so that the frequency offset point can be adjusted back to the desired normal operating frequency point. Herein, the first matching unit 62 and the second matching unit 64 may be composed of components such as capacitors or inductors, wherein the capacitors can adjust the operating frequency to a high frequency direction, and the inductor can adjust the operating rate to a low frequency direction. In addition, the matching circuit also has the function of making the loop antenna achieve 50 ohm impedance matching.
於此，第一匹配單元62設置於基板30，耦接至基板30上之饋入點，用以匹配第一輻射部10與第二輻射部20。第二匹配單元64設置於第二輻射部20的軟性印刷電路板24上，當環形輻射路徑為最大時(亦即第二輻射部20滑動拉伸至最大時)，第二匹配單元64與第一匹配單元62共同匹配第一輻射部10與第二輻射部20。The first matching unit 62 is disposed on the substrate 30 and coupled to the feeding point on the substrate 30 for matching the first radiating portion 10 and the second radiating portion 20 . The second matching unit 64 is disposed on the flexible printed circuit board 24 of the second radiating portion 20, and when the annular radiating path is maximum (that is, when the second radiating portion 20 is slidably stretched to the maximum), the second matching unit 64 and the A matching unit 62 commonly matches the first radiating portion 10 and the second radiating portion 20.
第一匹配單元62用來匹配尚未拉出的第二輻射部20與第一輻射部10所組成的拉伸前之環形天線。請續參照「第2A圖」，第二輻射部20尚未拉出，其所形成拉伸前環形天線的環形輻射路徑，圖中以虛線繪製其訊號流向。首先，訊號由饋入點流向第一匹配單元62，之後沿著第一輻射部10由第一表面32流到第二表面34，再藉由第二連接部50流向第二輻射部20，此時由於第二輻射部20尚未拉出，因此訊號不會流經第二匹配單元64，而直接沿著第二輻射部20流往第一表面32，最後流向第一連接部40而接地，完成拉伸前環形天線的第一操作頻率的環形輻射路徑。The first matching unit 62 is for matching the loop antenna before stretching which is composed of the second radiating portion 20 and the first radiating portion 10 which have not been pulled out. Referring to "2A", the second radiating portion 20 has not been pulled out, and the annular radiation path of the loop antenna before stretching is formed, and the signal flow direction is drawn by a broken line in the figure. First, the signal flows from the feed point to the first matching unit 62, then flows along the first radiating portion 10 from the first surface 32 to the second surface 34, and then flows through the second connecting portion 50 to the second radiating portion 20, Since the second radiating portion 20 has not been pulled out, the signal does not flow through the second matching unit 64, but directly flows along the second radiating portion 20 to the first surface 32, and finally flows to the first connecting portion 40 to be grounded. An annular radiation path that stretches the first operating frequency of the front loop antenna.
由上述說明可知，當第二輻射部20尚未拉出時，訊號所流經的環形輻射路徑僅會經過第一匹配單元62，因此當環形天線拉伸前，是由第一匹配單元62來執行匹配的動作。It can be seen from the above description that when the second radiating portion 20 has not been pulled out, the annular radiating path through which the signal flows will only pass through the first matching unit 62, so that it is executed by the first matching unit 62 before the loop antenna is stretched. Matching action.
請參照「第2B圖」為環形天線之第二實施例示意圖(二)。第二匹配單元64用來匹配第二輻射部20拉出後，第二輻射部20與第一輻射部10所組成的環形天線。「第2B圖」中第二輻射部20已拉出，此時第一輻射部10與第二輻射部20所形成之環形天線的環形輻射路徑，同樣以虛線繪製其訊號流向。首先，訊號由饋入點流向第一匹配單元62，之後沿著第一輻射部10由第一表面32流到第二表面34，藉由第二連接部50流向第二輻射部20，此時由於第二輻射部20已拉出，因此訊號會流經第二匹配單元64，再沿著第二輻射部20流往第一表面32，最後流向第一連接部40而接地，完成拉伸後環形天線的第二操作頻率的環形輻射路徑。Please refer to "FIG. 2B" as a schematic diagram (2) of the second embodiment of the loop antenna. The second matching unit 64 is configured to match the loop antenna composed of the second radiating portion 20 and the first radiating portion 10 after the second radiating portion 20 is pulled out. In the "Fig. 2B", the second radiating portion 20 has been pulled out. At this time, the annular radiating path of the loop antenna formed by the first radiating portion 10 and the second radiating portion 20 is also drawn in a dotted line. First, the signal flows from the feeding point to the first matching unit 62, then flows from the first surface 32 to the second surface 34 along the first radiating portion 10, and flows to the second radiating portion 20 through the second connecting portion 50. Since the second radiating portion 20 has been pulled out, the signal flows through the second matching unit 64, flows along the second radiating portion 20 to the first surface 32, and finally flows to the first connecting portion 40 to be grounded. An annular radiation path of the second operating frequency of the loop antenna.
由上述說明可知，當第二輻射部20拉出後，訊號所流經的環形輻射路徑會同時經過第一匹配單元62與第二匹配單元64，因此當環形天線伸縮後，會由第一匹配單元62與第二匹配單元64共同來執行匹配的動作。It can be seen from the above description that after the second radiating portion 20 is pulled out, the annular radiating path through which the signal flows will pass through the first matching unit 62 and the second matching unit 64 at the same time. Therefore, when the loop antenna is stretched, the first matching is performed. Unit 62 works in conjunction with second matching unit 64 to perform the matching action.
請同時參照「第3A圖」與「第3B圖」分別為環形天線延展前與延展後，S11反射係數之頻率響應圖。於此所稱之延展前與延展後，即為第二輻射部20伸縮前與伸縮後。「第3A圖」以環形天線延展前，環形輻射路徑為13.7公分為例，所得之實驗圖形，且假設所需的工作頻率為2.442GHz。由「第3A圖」右上角可看出實驗所得之數據為：在2.442GHz，環形天線測得-12.36dB。相對的，「第3B圖」以環形天線延展後，環形輻射路徑為26公分為例，所得之實驗圖形，同樣假設所需的工作頻率為2.442GHz。由「第3B圖」右上角可看出實驗所得之數據為：在2.442GHz，天線測得-15.89dB。由此可知，當環形天線經延展後可得到較佳之dB值。Please refer to "3A" and "3B" as the frequency response diagram of S11 reflection coefficient before and after extension of the loop antenna. Before and after the extension, the second radiation portion 20 is before and after expansion and contraction. "Anagram 3A" is an experimental example obtained by extending the loop antenna before the annular radiation path is 13.7 cm, and assuming that the required operating frequency is 2.442 GHz. From the upper right corner of Figure 3A, the experimental data is: at 2.442 GHz, the loop antenna measured -12.36 dB. In contrast, the "3B" is extended by a loop antenna, and the annular radiation path is 26 cm. The experimental pattern obtained also assumes that the required operating frequency is 2.442 GHz. From the upper right corner of Figure 3B, the data obtained from the experiment is: at 2.442 GHz, the antenna measured -15.89 dB. It can be seen that a better dB value can be obtained when the loop antenna is extended.
此外，同樣以「第3A圖」與「第3B圖」的條件，實驗所得之天線效率，當環形天線延展前之天線效率為81.07%，而當環形天線延展後的天線效率提升為92.42%。由此，可清楚得知，藉由本發明所提出之可伸縮式的環形天線，可在手持裝置日益縮小的空間內用以提升天線效率。In addition, under the conditions of "3A" and "3B", the antenna efficiency obtained by the experiment is 81.07% when the loop antenna is extended, and the antenna efficiency after the loop antenna is extended is 92.42%. Thus, it can be clearly seen that the retractable loop antenna proposed by the present invention can be used to improve antenna efficiency in a space where the handheld device is increasingly reduced.
雖然本發明的技術內容已經以較佳實施例揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神所作些許之更動與潤飾，皆應涵蓋於本發明的範疇內，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the technical content of the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and any modifications and refinements made by those skilled in the art without departing from the spirit of the present invention are encompassed by the present invention. The scope of protection of the present invention is therefore defined by the scope of the appended claims.
10．．．第一輻射部10. . . First radiation department
20．．．第二輻射部20. . . Second radiation department
22．．．支撐件twenty two. . . supporting item
24．．．軟性印刷電路板twenty four. . . Flexible printed circuit board
30．．．基板30. . . Substrate
32．．．第一表面32. . . First surface
34．．．第二表面34. . . Second surface
40．．．第一連接部40. . . First connection
41．．．第一端41. . . First end
42．．．第二端42. . . Second end
50．．．第二連接部50. . . Second connection
51．．．第三端51. . . Third end
52．．．第四端52. . . Fourth end
62．．．第一匹配單元62. . . First matching unit
64．．．第二匹配單元64. . . Second matching unit
第1A圖：環形天線之第一實施例示意圖(一)Figure 1A: Schematic diagram of the first embodiment of the loop antenna (1)
第1B圖：環形天線之第一實施例示意圖(二)Figure 1B: Schematic diagram of the first embodiment of the loop antenna (2)
第1C圖：環形天線之第一實施例剖面圖Figure 1C: Sectional view of a first embodiment of a loop antenna
第2A圖：環形天線之第二實施例示意圖(一)Figure 2A: Schematic diagram of the second embodiment of the loop antenna (1)
第2B圖：環形天線之第二實施例示意圖(二)Figure 2B: Schematic diagram of the second embodiment of the loop antenna (2)
第3A圖：環形天線延展前S11反射係數之頻率響應圖Figure 3A: Frequency response diagram of the S11 reflection coefficient before the loop antenna is extended
第3B圖：環形天線延展後S11反射係數之頻率響應圖Figure 3B: Frequency response diagram of the S11 reflection coefficient after the loop antenna is extended
10．．．第一輻射部10. . . First radiation department
20．．．第二輻射部20. . . Second radiation department
22．．．支撐件twenty two. . . supporting item
24．．．軟性印刷電路板twenty four. . . Flexible printed circuit board
30．．．基板30. . . Substrate
32．．．第一表面32. . . First surface
34．．．第二表面34. . . Second surface
40．．．第一連接部40. . . First connection
41．．．第一端41. . . First end
42．．．第二端42. . . Second end
50．．．第二連接部50. . . Second connection
51．．．第三端51. . . Third end
52．．．第四端52. . . Fourth end
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97143387A TWI382594B (en) | 2008-11-10 | 2008-11-10 | Loop antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW97143387A TWI382594B (en) | 2008-11-10 | 2008-11-10 | Loop antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201019537A TW201019537A (en) | 2010-05-16 |
| TWI382594B true TWI382594B (en) | 2013-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97143387A TWI382594B (en) | 2008-11-10 | 2008-11-10 | Loop antenna |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI382594B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW405304B (en) * | 1997-10-15 | 2000-09-11 | Motorola Inc | Electronic device including apparatus and method for routing flexible circuit conductors |
| US6339402B1 (en) * | 1999-12-22 | 2002-01-15 | Rangestar Wireless, Inc. | Low profile tunable circularly polarized antenna |
| US6476769B1 (en) * | 2001-09-19 | 2002-11-05 | Nokia Corporation | Internal multi-band antenna |
| JP2005079970A (en) * | 2003-09-01 | 2005-03-24 | Alps Electric Co Ltd | Antenna system |
-
2008
- 2008-11-10 TW TW97143387A patent/TWI382594B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW405304B (en) * | 1997-10-15 | 2000-09-11 | Motorola Inc | Electronic device including apparatus and method for routing flexible circuit conductors |
| US6339402B1 (en) * | 1999-12-22 | 2002-01-15 | Rangestar Wireless, Inc. | Low profile tunable circularly polarized antenna |
| US6476769B1 (en) * | 2001-09-19 | 2002-11-05 | Nokia Corporation | Internal multi-band antenna |
| JP2005079970A (en) * | 2003-09-01 | 2005-03-24 | Alps Electric Co Ltd | Antenna system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201019537A (en) | 2010-05-16 |
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