TWI488366B - Dual-band antenna - Google Patents
Dual-band antenna Download PDFInfo
- Publication number
- TWI488366B TWI488366B TW098105671A TW98105671A TWI488366B TW I488366 B TWI488366 B TW I488366B TW 098105671 A TW098105671 A TW 098105671A TW 98105671 A TW98105671 A TW 98105671A TW I488366 B TWI488366 B TW I488366B
- Authority
- TW
- Taiwan
- Prior art keywords
- arm
- dual
- radiating
- feeding
- antenna
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 17
- 230000009977 dual effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
Description
本創作涉及雙頻天線，特別是涉及該天線之阻抗匹配結構。 The present invention relates to a dual frequency antenna, and more particularly to an impedance matching structure of the antenna.
隨著消費類電子不斷發展，為滿足連接寬頻網路之需求，各種消費類電子設備均加入無線網路通訊之功能，即在電子設備中加入天線進行收發電磁波訊號，從而實現無線接入乙太網(Ethernet)。 With the continuous development of consumer electronics, in order to meet the needs of connecting broadband networks, various consumer electronic devices have joined the function of wireless network communication, that is, adding antennas to electronic devices to transmit and receive electromagnetic signals, thereby achieving wireless access to Ethernet. Internet (Ethernet).
WLAN(Wireless Local Area Network，無線局域網)是消費類電子主要之無線通訊模式，諸如筆記本電腦通常在生產時即已內建支援WLAN之無線網卡。WLAN對應之國際標準目前發展到傳輸速率為74Mbps的IEEE 802.11n，該標準工作頻率係2.4GHz。為了與前期發布工作頻率於5GHz的IEEE 802.11a、工作頻率於2.4GHz的IEEE 802.11 b/g相容，消費類電子通常採用能同時工作在這兩個工作頻率之天線。 WLAN (Wireless Local Area Network) is the main wireless communication mode for consumer electronics. For example, a notebook computer usually has a wireless network card supporting WLAN at the time of production. The international standard for WLAN is currently developed to IEEE 802.11n with a transmission rate of 74 Mbps, which is 2.4 GHz. In order to be compatible with IEEE 802.11a, which was previously published at 5 GHz, and IEEE 802.11 b/g, which operates at 2.4 GHz, consumer electronics typically employ antennas that can operate at both operating frequencies simultaneously.
平面倒“F”型天線(Planar Inverted-F Antenna，PIFA)是一種常用於消費電子的小型天線。其特點在於尺寸小，重量輕，可以有效減少佔用空間及製造成本，阻抗匹配好，易於實現雙頻或多頻。其另一個重要特徵即在於其兼具水準極化和垂直極化，適用於電磁環境較為複雜之場所。 Planar Inverted-F Antenna (PIFA) is a small antenna commonly used in consumer electronics. The utility model has the advantages of small size and light weight, can effectively reduce the occupied space and manufacturing cost, has good impedance matching, and is easy to realize dual frequency or multi frequency. Another important feature is that it has both horizontal polarization and vertical polarization, and is suitable for places where the electromagnetic environment is more complicated.
惟，一般平面倒“F”型天線的饋點位置即饋線接入位置難於確定。與本創作相關之習知技術請參2003年11月21日公告之臺灣專利第563274號，該習知技術所揭示之平面倒“F”型天線包括一輻射元件；一接地元件，係間隔地位於該輻射組件之一側；一導電接腳，具有一第一支臂，其一端連接該輻射元件、一第二支臂系與該第一支臂相間隔且其一端連接該接地元件，及一第三支臂系跨接於該第一與第二支臂；及一訊號線，一端系連接於該導電接腳，另一端則與該無線電收發裝置所使用之電路產生電性連接。其饋線接入時很難準確接入在理論饋點上，如果稍有偏差，即會造成天線輸入阻抗改變，從而造成天線輸入阻抗與饋線阻抗不匹配，而影響天線之工作性能。 However, the feed point position of the general planar inverted "F" type antenna, that is, the feeder access position is difficult to determine. The prior art related to this creation is referred to Taiwan Patent No. 563274, published on November 21, 2003. The planar inverted "F" type antenna disclosed in the prior art includes a radiating element; a grounding element is spaced apart Located on one side of the radiating element; a conductive pin having a first arm having one end connected to the radiating element, a second arm being spaced apart from the first arm and having one end connected to the grounding element, and A third arm is connected to the first and second arms; and a signal line, one end is connected to the conductive pin, and the other end is electrically connected to a circuit used by the radio transceiver. When the feeder is connected, it is difficult to accurately access the theoretical feed point. If there is a slight deviation, the input impedance of the antenna will change, which will cause the antenna input impedance to not match the impedance of the feeder, which will affect the performance of the antenna.
是故，有必要提供一種改進之天線結構。 Therefore, it is necessary to provide an improved antenna structure.
有鑒於上述內容，本創作之目的在於提供一種雙頻天線，該天線可以有效調節其阻抗匹配。 In view of the above, the purpose of the present invention is to provide a dual-frequency antenna that can effectively adjust its impedance matching.
為實現前述目的，本創作採用如下技術方案：一種雙頻天線，其包括一輻射部，其包括第一輻射部及第二輻射部，該第一輻射部上延伸設置有一饋入部；一接地部；一連接部，其連接輻射部與接地部，該連接部包括成N形設置的第一支臂、第一支臂與第三支臂，第一支臂連接至第一輻射部與第二輻射部之交匯處、第三支臂連接至接地部；一信號饋線，其連接至前述饋入部。 In order to achieve the foregoing object, the present invention adopts the following technical solution: a dual-frequency antenna includes a radiating portion including a first radiating portion and a second radiating portion, and a feeding portion extending from the first radiating portion; a ground portion a connecting portion connecting the radiating portion and the ground portion, the connecting portion comprising a first arm disposed in an N shape, a first arm and a third arm, the first arm being coupled to the first radiating portion and the second portion The intersection of the radiation portion, the third arm is connected to the ground portion; and a signal feed line is connected to the aforementioned feeding portion.
相對于習知技術，相對于現有技術，本創作雙頻天線可以同時通過調節連接部與饋入部形狀來調節阻抗，因而可以改善天線之阻抗匹配效果。 Compared with the prior art, compared with the prior art, the dual-frequency antenna of the present invention can adjust the impedance by adjusting the shape of the connecting portion and the feeding portion at the same time, thereby improving the impedance matching effect of the antenna.
100‧‧‧雙頻天線 100‧‧‧Double frequency antenna
411、412‧‧‧第一支臂41一端 411, 412‧‧‧One end of the first arm 41
2‧‧‧輻射部 2‧‧‧ Radiation Department
42‧‧‧第二支臂 42‧‧‧second arm
22‧‧‧第一輻射部 22‧‧‧First Radiation Department
421、422‧‧‧第二支臂42的一端 421, 422‧‧‧ one end of the second arm 42
24‧‧‧第二輻射部 24‧‧‧Second Radiation Department
43‧‧‧第三支臂 43‧‧‧ third arm
26‧‧‧饋入部 26‧‧‧Feeding Department
431、432‧‧‧第三支臂43一端 431, 432‧‧‧3rd end of the third arm 43
3‧‧‧一接地部 3‧‧‧A grounding department
5‧‧‧訊號饋入線 5‧‧‧ Signal Feeding Line
4‧‧‧連接部 4‧‧‧Connecting Department
51‧‧‧導電芯線 51‧‧‧Electrical core wire
41‧‧‧第一支臂 41‧‧‧First arm
52‧‧‧接地層 52‧‧‧ Grounding layer
第一圖係符合本創作一種雙頻天線之示意圖。 The first figure is a schematic diagram of a dual-frequency antenna according to the present invention.
請參閱第一圖所示，符合本創作之一種雙頻天線100，其包括一輻射部2、一接地部3、連接輻射部2與接地部3的連接部4，一訊號饋入線5。 Referring to the first figure, a dual-frequency antenna 100 conforming to the present invention includes a radiating portion 2, a grounding portion 3, a connecting portion 4 connecting the radiating portion 2 and the grounding portion 3, and a signal feeding line 5.
輻射部2係一直線狀導體，其包括用於收發第一頻率f1之第一輻射部22與用於收發第二頻率f2之第二輻射部24，第一輻射部22之長度L12為第一頻率f1波長的四分之一，第二輻射部24的長度L11為第二頻率f2波長的四分之一。輻射部2之總長度為兩部分長度L11、L12之和，即第一、第二頻率波長總和的四分之一。第一輻射部22之下緣向接地部3延伸設置有一饋入部26。 The radiating portion 2 is a linear conductor including a first radiating portion 22 for transmitting and receiving the first frequency f1 and a second radiating portion 24 for transmitting and receiving the second frequency f2. The length L12 of the first radiating portion 22 is the first frequency. One quarter of the f1 wavelength, the length L11 of the second radiating portion 24 is one quarter of the wavelength of the second frequency f2. The total length of the radiating portion 2 is the sum of the lengths L11 and L12 of the two portions, that is, one quarter of the sum of the wavelengths of the first and second frequencies. A feeding portion 26 is defined in the lower edge of the first radiating portion 22 to the ground portion 3.
接地部3係於輻射部2下側間隔設置之一金屬片，該接地部3長度L3大於輻射部長度。 The ground portion 3 is provided with a metal piece spaced apart from the lower side of the radiation portion 2, and the length L3 of the ground portion 3 is larger than the length of the radiation portion.
連接部4位於輻射部2與接地部3之間並連接兩者，該連接部4呈N字形並包括一第一支臂41、一第二支臂42及一第三支臂43。第一支臂41之一端411連接輻射部2中兩輻射部22、24之交匯處，及其另一端412則沿輻射部2朝接地部4之方向延伸且未與接地部4接觸。第二支臂42之一端421連接接地部3，與另一端422沿接地部4朝輻射部2之方向延伸且未接觸輻射部2，並且第二支臂42與第一支臂41平行。第三支臂43系跨接第一支臂41與第二支臂42，且其第一端431連接第一支臂41中未與輻射部3相接之一端412，其第二端432連接第二支臂42中未與接地部3相接之一端422。 The connecting portion 4 is located between the radiating portion 2 and the ground portion 3 and connects the two. The connecting portion 4 is N-shaped and includes a first arm 41, a second arm 42 and a third arm 43. One end 411 of the first arm 41 is connected to the intersection of the two radiating portions 22, 24 in the radiating portion 2, and the other end 412 extends in the direction of the radiating portion 2 toward the ground portion 4 and is not in contact with the ground portion 4. One end 421 of the second arm 42 is connected to the ground portion 3, and the other end 422 extends in the direction of the radiation portion 2 along the ground portion 4 and does not contact the radiation portion 2, and the second arm 42 is parallel to the first arm 41. The third arm 43 is connected to the first arm 41 and the second arm 42 , and the first end 431 is connected to one end 412 of the first arm 41 not connected to the radiation portion 3 , and the second end 432 is connected The second arm 42 is not connected to the ground portion 3 at one end 422.
訊號饋入線5一端連接於雙頻天線100上，另一端則電性連接至一 電子設備之無線電收發電路(未圖示)。於本實施方式中，訊號線5可為一同軸電纜，其包括一導電芯線51、一包覆導電芯線51的內絕緣層(未標號)、一包覆內絕緣層的接地層52以及一包覆接地層52之絕緣外套(未標號)。導電芯線51焊接至輻射部2之饋入部26。 One end of the signal feeding line 5 is connected to the dual-frequency antenna 100, and the other end is electrically connected to one. Radio transceiver circuit (not shown) for electronic equipment. In this embodiment, the signal line 5 can be a coaxial cable including a conductive core 51, an inner insulating layer (not labeled) covering the conductive core 51, a ground layer 52 covering the inner insulating layer, and a package. Insulating jacket (not labeled) covering the grounding layer 52. The conductive core wire 51 is welded to the feed portion 26 of the radiation portion 2.
天線100可以通過變更連接部3的第一支臂、第二支臂與第三支臂之形狀、尺寸來調節天線100之輸入輸出阻抗。同時，天線100設置單獨之饋入部26，該饋入部26亦可以用來調節天線2之輸入輸出阻抗。於本實施方式中，饋入部26為長方形，其在輻射部長度方向上延伸之長度為L21，在朝輻射部向接地部方向上延伸的寬度為L22，該饋入部26的長度L21大於寬度L22。 The antenna 100 can adjust the input and output impedance of the antenna 100 by changing the shape and size of the first arm, the second arm, and the third arm of the connecting portion 3. At the same time, the antenna 100 is provided with a separate feed portion 26, which can also be used to adjust the input and output impedance of the antenna 2. In the present embodiment, the feeding portion 26 has a rectangular shape, a length extending in the longitudinal direction of the radiation portion is L21, a width extending toward the radiation portion toward the ground portion is L22, and a length L21 of the feeding portion 26 is larger than the width L22. .
綜上所述，本創作確已符合發明專利之要件，爰依法提出申請專利。惟，以上所述者僅係本發明之較佳實施方式，本發明之範圍並不以上述實施方式為限，舉凡熟習本案技藝之人士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於以下專利申請範圍內。 In summary, this creation has indeed met the requirements of the invention patent, and applied for a patent in accordance with the law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent applications.
100‧‧‧雙頻天線 100‧‧‧Double frequency antenna
411、412‧‧‧第一支臂41一端 411, 412‧‧‧One end of the first arm 41
2‧‧‧輻射部 2‧‧‧ Radiation Department
42‧‧‧第二支臂 42‧‧‧second arm
22‧‧‧第一輻射部 22‧‧‧First Radiation Department
421、422‧‧‧第二支臂42的一端 421, 422‧‧‧ one end of the second arm 42
24‧‧‧第二輻射部 24‧‧‧Second Radiation Department
43‧‧‧第三支臂 43‧‧‧ third arm
26‧‧‧饋入部 26‧‧‧Feeding Department
431、432‧‧‧第三支臂43一端 431, 432‧‧‧3rd end of the third arm 43
3‧‧‧一接地部 3‧‧‧A grounding department
5‧‧‧訊號饋入線 5‧‧‧ Signal Feeding Line
4‧‧‧連接部 4‧‧‧Connecting Department
51‧‧‧導電芯線 51‧‧‧Electrical core wire
41‧‧‧第一支臂 41‧‧‧First arm
52‧‧‧接地層 52‧‧‧ Grounding layer
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW098105671A TWI488366B (en) | 2009-02-23 | 2009-02-23 | Dual-band antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW098105671A TWI488366B (en) | 2009-02-23 | 2009-02-23 | Dual-band antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201032398A TW201032398A (en) | 2010-09-01 |
| TWI488366B true TWI488366B (en) | 2015-06-11 |
Family
ID=44854881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW098105671A TWI488366B (en) | 2009-02-23 | 2009-02-23 | Dual-band antenna |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI488366B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW563274B (en) * | 2002-10-08 | 2003-11-21 | Wistron Neweb Corp | Dual-band antenna |
| US20040104849A1 (en) * | 2002-11-29 | 2004-06-03 | Lung-Sheng Tai | Dual band antenna |
| TWM282338U (en) * | 2005-06-28 | 2005-12-01 | Wha Yu Ind Co Ltd | Dual-frequency antenna structure |
-
2009
- 2009-02-23 TW TW098105671A patent/TWI488366B/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW563274B (en) * | 2002-10-08 | 2003-11-21 | Wistron Neweb Corp | Dual-band antenna |
| US20040104849A1 (en) * | 2002-11-29 | 2004-06-03 | Lung-Sheng Tai | Dual band antenna |
| TWM282338U (en) * | 2005-06-28 | 2005-12-01 | Wha Yu Ind Co Ltd | Dual-frequency antenna structure |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201032398A (en) | 2010-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101174730B (en) | Printing type antenna | |
| TWI388084B (en) | Wide-band planar antenna | |
| TWI521788B (en) | Antenna assembly and wireless communication device | |
| CN103811868B (en) | Antenna assembly and wireless communication device | |
| CN101388494B (en) | Multi-antenna integrated module | |
| CN103151607B (en) | For the broadband dual-antenna system based on decoupling line structure of mobile terminal | |
| CN202474229U (en) | Antenna assembly for wireless communication device and wireless communication device | |
| CN103296424B (en) | Broadband dual polarized antenna based on single-chip double-sided printed-circuit board | |
| US6842155B1 (en) | Low-cost coaxial cable fed inverted-L antenna | |
| WO2023202425A1 (en) | Antenna and electronic device | |
| CN201937009U (en) | Broadband Inverted-F Antenna | |
| CN212648490U (en) | Dual-band antenna and IOT equipment | |
| TWI462392B (en) | Multi-antenna system and an electronic device having the same | |
| TWI451632B (en) | High gain loop array antenna system and electronic device | |
| CN201081820Y (en) | Broadband antenna and related dual-band antenna | |
| US9331383B2 (en) | Antenna structure and the manufacturing method therefor | |
| CN103840255B (en) | Printing type broadband monopole antenna module | |
| US8373600B2 (en) | Single-band antenna | |
| CN101388488A (en) | Planar dual-frequency antenna | |
| TWI467853B (en) | Dual band antenna and wireless communication device using the same | |
| CN201397882Y (en) | dual frequency antenna | |
| US20230155304A1 (en) | Three-dimensional antenna module | |
| TWM444619U (en) | Multi-frequency spurious coupling antenna and wireless communication device with a multi-band spurious coupling antenna | |
| CN102163764A (en) | Small-sized three-dimensional antenna | |
| TWI488366B (en) | Dual-band antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |