TWM618513U

TWM618513U - Multi-band antenna

Info

Publication number: TWM618513U
Application number: TW110205776U
Authority: TW
Inventors: 林名儒; 王致中; 蕭嵐庸; 孫少凱
Original assignee: 正崴精密工業股份有限公司
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-10-21

Abstract

本創作公開一種多頻天線，包括：一接地部；一饋入部，設有相對的第一、第二側邊與相對的第一、第二端緣，第一側邊靠近接地部並與其保持一距離；一饋入點，設置於饋入部且靠近第一側邊；一下地部，由第一端緣延伸形成並連接於饋入部與接地部之間，第二端緣依序延伸形成一第一延伸部、一第二延伸部、一第三延伸部、一第四延伸部、一第五延伸部、一第一支部、一第二支部、一第三支部及一環形部，末端連接於第一側緣，環形部、第一支部與第二支部延伸於饋入部同一側，第三支部延伸於饋入部另一側。因此，本創作多頻天線在有限體積的情況下增加頻段。 This creation discloses a multi-frequency antenna, including: a grounding part; a feeding part, provided with opposite first and second side edges and opposite first and second end edges, the first side being close to and holding the grounding part A distance; a feeding point, arranged at the feeding part and close to the first side; the lower part, formed by the first end edge extending and connected between the feeding part and the grounding part, the second end edge extending in sequence to form a A first extension, a second extension, a third extension, a fourth extension, a fifth extension, a first branch, a second branch, a third branch, and an annular part, the ends connected On the first side edge, the ring portion, the first branch and the second branch extend on the same side of the feeding portion, and the third branch extends on the other side of the feeding portion. Therefore, the multi-frequency antenna of this creation increases the frequency band in the case of a limited volume.

Description

Multi-frequency antenna

本創作涉及一種天線，尤其是涉及一種在體積有限的情況下增加頻段的多頻天線。 This creation relates to an antenna, especially to a multi-frequency antenna that increases the frequency band in a limited volume.

隨著高科技通訊產業的蓬勃發展，行動通訊產品越來越廣泛，尤其5G通訊越來越普及，因5G技術的發展，5G NR頻段、5G毫米波頻段、FR1頻段也開始釋出，部分頻段也與原有的4G頻段重疊，因此，對於行動通訊產品例如手機的天線的多頻段需求越來越高。 With the vigorous development of the high-tech communications industry, mobile communications products have become more and more widespread, especially 5G communications have become more and more popular. Due to the development of 5G technology, 5G NR frequency bands, 5G millimeter wave frequency bands, and FR1 frequency bands have also begun to be released. It also overlaps with the original 4G frequency band. Therefore, there is an increasing demand for multi-band antennas for mobile communication products such as mobile phones.

然，因為市場趨勢，行動通訊裝置中的天線皆收容於裝置殼體的內部，因此天線受到了殼體空間的限制，而採用了小型的平板倒F天線(PIFA)做為手機的天線，其在一定的天線面積條件下要提升應用頻寬有一定難度，故無法滿足多頻段的需求。 However, because of the market trend, the antennas in mobile communication devices are all contained in the device housing. Therefore, the antenna is limited by the housing space, and a small flat-panel inverted-F antenna (PIFA) is used as the antenna of the mobile phone. It is difficult to increase the application bandwidth under a certain antenna area, so it cannot meet the needs of multiple frequency bands.

因此，有必要提供一種在體積有限的情況下增加頻段的多頻天線。 Therefore, it is necessary to provide a multi-frequency antenna that increases the frequency band in a limited volume.

本創作之目的提供一種多頻天線，包括：一接地部；一饋入部，所述饋入部設有相對的一第一側邊與一第二側邊以及相對的一第一端緣與一第二端緣，所述第一側邊靠近所述接地部並與所述接地部保持一距離；一饋入點，設置於所述饋入部並靠近所述第一側邊；一下地部，由所述饋入部之所述第一端緣延伸形成並連接於所述饋入部與所述接地部之間；一第一延伸部，由所述饋入部之所述第二端緣延伸所形成；一第二延伸部，由所述第一延伸部末端延伸所形成；一第三延伸部，由所述第二延伸部末端延伸所形成；一第四延伸部，由所述第三延伸部末端延伸所形成；一第五延伸部，由所述第四延伸部延伸所形成；一第一支部，由所述第四延伸部末端延伸所形成；一第二支部，由所述第五延伸部末端延伸所形成，所述第一支部與所述第二支部延伸於所述饋入部同一側；一第三支部，由所述第二延伸部末端延伸所形成，所述第三支部延伸於所述饋入部另一側；及一環形部，由所述第五延伸部末端延伸所形成，所述環形部之末端連接於饋入部之第一端緣，所述環形部、所述第一支部與所述第二支部延伸於所述饋入部同一側。 The purpose of this creation is to provide a multi-frequency antenna, including: a grounding part; a feeding part, the feeding part is provided with a first side and a second side opposite to each other, and a first edge and a first side opposite to each other. Two end edges, the first side is close to the grounding portion and keeping a distance from the grounding portion; a feeding point, Is arranged at the feeding portion and close to the first side; a lower ground portion is formed by extending the first end edge of the feeding portion and is connected between the feeding portion and the grounding portion; An extension part is formed by the extension of the second end edge of the feeding part; a second extension part is formed by the extension of the end of the first extension part; a third extension part is formed by the second extension A fourth extension is formed by the extension of the end of the third extension; a fifth extension is formed by the extension of the fourth extension; a first branch is formed by the extension of the fourth extension. Four extensions are formed by the end extension; a second branch is formed by the extension of the fifth extension, the first branch and the second branch extend on the same side of the feeding portion; a third branch, Formed by the extension of the end of the second extension, the third branch extending on the other side of the feeding portion; and a ring portion formed by the extension of the end of the fifth extension, the end of the ring Connected to the first end edge of the feeding portion, and the annular portion, the first branch portion and the second branch portion extend on the same side of the feeding portion.

選擇性地，所述饋入點、所述饋入部、所述第一延伸部、所述第二延伸部、所述第三延伸部、所述第四延伸部及所述第一支部組成一第一輻射部。 Optionally, the feeding point, the feeding portion, the first extension portion, the second extension portion, the third extension portion, the fourth extension portion, and the first branch constitute one The first radiation department.

選擇性地，所述饋入點、所述饋入部、所述第一延伸部、所述第二延伸部、所述第三延伸部、所述第五延伸部及所述第二支部組成一第二輻射部。 Optionally, the feeding point, the feeding portion, the first extension portion, the second extension portion, the third extension portion, the fifth extension portion, and the second branch constitute one The second radiation department.

選擇性地，所述饋入點、所述饋入部、所述第一延伸部、所述第二延伸部及所述第三支部組成一第三輻射部。 Optionally, the feeding point, the feeding portion, the first extension portion, the second extension portion, and the third branch portion form a third radiating portion.

選擇性地，所述環形部延伸長度大於所述第一輻射部延伸長度，所述第一輻射部延伸長度大於所述第三輻射部延伸長度，所述第三輻射部延伸長度大於所述第二輻射部延伸長度。 Optionally, the extension length of the annular portion is greater than the extension length of the first radiation portion, the extension length of the first radiation portion is greater than the extension length of the third radiation portion, and the extension length of the third radiation portion is greater than the extension length of the first radiation portion. Two radiating part extension length.

選擇性地，所述第一支部包括一第一橫部與一第一豎直部，所述第一橫部橫向延伸於所述第四延伸部左側邊頂端，所述第一支部之所述第一橫部右端連接於所述第四延伸部左側邊頂端，所述第一橫部左端向下延伸形成所述第一豎直部，所述第一豎直部與所述第二支部彼此垂直並保持一距離。 Optionally, the first branch portion includes a first horizontal portion and a first vertical portion, the first horizontal portion extends transversely to the top end of the left side of the fourth extension portion, and the first branch portion The right end of the first horizontal portion is connected to the top end of the left side of the fourth extension portion, the left end of the first horizontal portion extends downward to form the first vertical portion, and the first vertical portion and the second branch portion are mutually connected. Vertical and keep a distance.

選擇性地，所述第三支部包括一第二豎直部、一第二橫部及第三凸出部，所述第二豎直部縱向延伸於所述第二延伸部頂端，所述第二豎直部底端連接所述第二延伸部，所述第二豎直部頂端橫向延伸形成所述第二橫部，所述第二橫部右端緣與所述接地部右端緣平齊，所述第二橫部左端與所述第四延伸部保持一距離，所述第二豎直部與所述第二橫部連接處設有所述第三凸出部，所述第三支部上側邊與所述第一支部上側邊齊平。 Optionally, the third branch portion includes a second vertical portion, a second horizontal portion, and a third protruding portion, the second vertical portion extends longitudinally from the top end of the second extension portion, and the first The bottom ends of the two vertical parts are connected to the second extension part, the top ends of the second vertical parts extend transversely to form the second transverse part, and the right end edge of the second transverse part is flush with the right end edge of the grounding part, The left end of the second transverse portion is kept at a distance from the fourth extension portion, the third protruding portion is provided at the junction of the second vertical portion and the second transverse portion, and the third branch is The side is flush with the upper side of the first branch.

選擇性地，所述環形部包括一第一線段、一第二線段、一第三線段、一第四線段及一第五線段，所述第一線段橫向延伸於所述第五延伸部左端下側邊，所述第一線段左端向下延伸形成所述第二線段，所述第二線段底端向右延伸形成所述第三線段，所述第三線段右端向上延伸形成所述第四線段，所述第四線段頂端向右延伸形成所述第五線段，所述第五線段之右端連接於所述饋入部，所述第五線段之右端連接於所述饋入部之第一端緣之上部。 Optionally, the ring portion includes a first line segment, a second line segment, a third line segment, a fourth line segment, and a fifth line segment, and the first line segment extends transversely to the fifth extension portion On the lower side of the left end, the left end of the first line segment extends downward to form the second line segment, the bottom end of the second line segment extends to the right to form the third line segment, and the right end of the third line segment extends upward to form the The fourth line segment, the top end of the fourth line segment extends to the right to form the fifth line segment, the right end of the fifth line segment is connected to the feeding portion, and the right end of the fifth line segment is connected to the first of the feeding portion Above the end edge.

選擇性地，所述第一延伸部與所述第二延伸部連接處設有一第一凸出部，所述第二延伸部左側邊、所述第三延伸部下側邊、所述第一凸出部及所述饋入部上側邊之間形成一第一間隙，所述第一間隙設置於所述饋入部、所述第一延伸部、所述第二延伸部、所述第三延伸部及所述第一凸出部之間。 Optionally, a first protrusion is provided at the junction of the first extension and the second extension, the left side of the second extension, the lower side of the third extension, and the first protrusion A first gap is formed between the outlet portion and the upper side of the feeding portion, and the first gap is provided in the feeding portion, the first extension portion, the second extension portion, and the third extension portion And the first protrusion.

選擇性地，所述第三延伸部與所述第四延伸部連接處設有一第二凸出部，所述第三延伸部上側邊、所述第四延伸部右側邊、所述第二凸出部及第三支部之間形成一第二間隙，所述第二間隙設置於所述第三延伸部、所述第四延伸部、所述第二凸出部及第三支部之間。 Optionally, a second protrusion is provided at the connection between the third extension and the fourth extension, the upper side of the third extension, the right side of the fourth extension, and the second Bulge and A second gap is formed between the third branch portions, and the second gap is arranged between the third extension portion, the fourth extension portion, the second protruding portion, and the third branch portion.

100:多頻天線 100: Multi-frequency antenna

1:饋入點 1: feed point

2:饋入部 2: Feeding part

20:接地部 20: Grounding part

21:第一端緣 21: The first edge

22:第二端緣 22: second edge

23:第一側邊 23: First side

24:第二側邊 24: second side

3:第一延伸部 3: The first extension

30:電路板 30: circuit board

4:第二延伸部 4: The second extension

5:第三延伸部 5: Third extension

6:第四延伸部 6: The fourth extension

7:第五延伸部 7: Fifth extension

8:第一支部 8: The first branch

81:第一橫部 81: The first cross

82:第一豎直部 82: first vertical part

9:第二支部 9: The second branch

10:第三支部 10: The third branch

101:第二豎直部 101: second vertical part

102:第二橫部 102: Second Cross

103:第三凸出部 103: Third protrusion

11:環形部 11: Ring part

111:第一線段 111: first line segment

112:第二線段 112: second line segment

113:第三線段 113: Third line segment

114:第四線段 114: fourth line segment

115:第五線段 115: Fifth line segment

12:下地部 12: Lower Ground

13:連接部 13: Connection part

14:第一凸出部 14: The first protrusion

15:第二凸出部 15: second protrusion

16:第一間隙 16: first gap

17:第二間隙 17: second gap

200:第一輻射部 200: First Radiation Department

300:第二輻射部 300: The second radiation department

400:第三輻射部 400: Third Radiation Department

〔第一圖〕係本創作多頻天線之平面結構之示意圖。 [The first picture] is a schematic diagram of the planar structure of the multi-band antenna of this creation.

〔第二圖〕係本創作多頻天線的電壓駐波比(Voltage Standing Wave Ratio，VSWR)測試圖。 [Second Picture] is the voltage standing wave ratio (VSWR) test diagram of the multi-band antenna of this creation.

〔第三圖〕係本創作多頻天線的史密斯圖(Smith Chart)。 [The third picture] is the Smith Chart of the multi-frequency antenna created by this book.

〔第四圖〕係本創作多頻天線的平均功率圖。 [The fourth picture] is the average power diagram of the multi-frequency antenna of this creation.

〔第五圖〕係本創作多頻天線的等效全向輻射功率圖。 [The fifth picture] is the equivalent omnidirectional radiation power diagram of the multi-frequency antenna of this creation.

〔第六圖〕係本創作多頻天線的效率圖。 [Picture 6] is the efficiency diagram of the multi-frequency antenna of this creation.

為詳細說明本創作多頻天線100之技術內容、構造特徵、所達成的目的及功效，以下茲例舉實施例並配合圖式詳予說明。 In order to describe in detail the technical content, structural features, and achieved objectives and effects of the multi-frequency antenna 100 of the present invention, the following examples are given in conjunction with the drawings for detailed description.

請參閱第一圖，本創作多頻天線100為一平板倒F型天線，設於一電路板30上，本創作多頻天線100由一饋入點1、一饋入部2、一第一延伸部3、一第二延伸部4、一第三延伸部5、一第四延伸部6、一第五延伸部7、一第一支部8、一第二支部9、一第三支部10、一環形部11、一下地部12及一接地部20所組成。 Please refer to the first figure. The creative multi-frequency antenna 100 is a flat inverted F antenna, which is set on a circuit board 30. The creative multi-frequency antenna 100 consists of a feed point 1, a feed part 2, and a first extension. Part 3, a second extension part 4, a third extension part 5, a fourth extension part 6, a fifth extension part 7, a first branch part 8, a second branch part 9, a third branch part 10, a ring The shape part 11, the bottom part 12 and a ground part 20 are composed.

所述饋入點1設置於所述饋入部2一側，所述饋入點1由所述饋入部2之下方傳輸電流。所述饋入部2為橫向設置的一長方形片狀，所述饋入部2平行於所述接地部20，所述饋入部2設有一第一端緣21、與所述第一端緣21相對的一第二端緣22以及相對的一第一側邊23與一第二側邊24，所述第一側邊23靠近所述接地部20並與所述接地部20保持一距離，所述饋入點1之位置靠近所述第一側邊23。所述饋入部2之所述第一端緣21上部連接所述環形部11，所述饋入部2之所述第一端緣21下部連接所述下地部12，所述饋入部2之所述第一端緣21下部向左延伸形成所述下地部12。所述饋入部2之所述第二端緣22連接所述第一延伸部3，所述饋入部2之所述第二端緣22上部向右橫向延伸形成所述第一延伸部3。 The feeding point 1 is arranged at one side of the feeding portion 2, and the feeding point 1 transmits current from below the feeding portion 2. The feeding portion 2 is in the shape of a rectangular sheet disposed transversely, the feeding portion 2 is parallel to the grounding portion 20, and the feeding portion 2 is provided with a first end edge 21 opposite to the first end edge 21. A second edge 22 and a first side 23 and a second side 24 opposite to each other, and the first side 23 is close to the The grounding portion 20 keeps a distance from the grounding portion 20, and the position of the feeding point 1 is close to the first side 23. The upper portion of the first end edge 21 of the feeding portion 2 is connected to the ring portion 11, the lower portion of the first end edge 21 of the feeding portion 2 is connected to the lower ground portion 12, and the The lower part of the first end edge 21 extends to the left to form the lower part 12. The second end edge 22 of the feeding portion 2 is connected to the first extension portion 3, and the upper portion of the second end edge 22 of the feeding portion 2 extends laterally to the right to form the first extension portion 3.

所述下地部12由所述饋入部2之所述第一端緣21下部向左延伸所形成，所述下地部12右端連接於所述饋入部2，所述下地部12平行於所述接地部20，在本實施例中，所述下地部12設置於所述饋入部2、所述接地部20與所述環形部11之間。所述下地部12左端設有向下連接於所述接地部20的一連接部13，所述連接部13呈平面條狀，所述連接部13垂直於所述下地部12與所述接地部20。 The lower ground portion 12 is formed by extending the lower part of the first end edge 21 of the feeding portion 2 to the left, the right end of the lower ground portion 12 is connected to the feeding portion 2, and the lower ground portion 12 is parallel to the ground In this embodiment, the lower ground portion 12 is disposed between the feeding portion 2, the grounding portion 20, and the ring portion 11. The left end of the lower ground portion 12 is provided with a connecting portion 13 downwardly connected to the grounding portion 20. The connecting portion 13 is in the shape of a flat strip, and the connecting portion 13 is perpendicular to the lower ground portion 12 and the grounding portion. 20.

所述饋入部2右端連接所述第一延伸部3，所述饋入部2右端向右延伸形成所述第一延伸部3，所述饋入部2之所述第二端緣22向右橫向延伸形成所述第一延伸部3。所述第一延伸部3與所述接地部20之間間隔一距離，所述第一延伸部3平行於所述接地部20，所述第一延伸部3左端連接所述饋入部2，所述第一延伸部3右端連接所述第二延伸部4，所述第一延伸部3右端向上延伸形成所述第二延伸部4。所述第一延伸部3與所述第二延伸部4連接處設有一第一凸出部14。所述第一凸出部14設置於所述第一延伸部3上側與所述第二延伸部4右側之間。 The right end of the feeding portion 2 is connected to the first extension 3, the right end of the feeding portion 2 extends to the right to form the first extension 3, and the second end edge 22 of the feeding portion 2 extends laterally to the right The first extension 3 is formed. The first extension portion 3 is separated from the grounding portion 20 by a distance, the first extension portion 3 is parallel to the grounding portion 20, and the left end of the first extension portion 3 is connected to the feeding portion 2, so The right end of the first extension part 3 is connected to the second extension part 4, and the right end of the first extension part 3 extends upward to form the second extension part 4. A first protruding portion 14 is provided at the junction of the first extension portion 3 and the second extension portion 4. The first protruding portion 14 is disposed between the upper side of the first extension portion 3 and the right side of the second extension portion 4.

所述第二延伸部4底端與所述接地部20之間間隔一距離，所述第二延伸部4垂直於所述第一延伸部3，所述第二延伸部4底端連接所述第一延伸部3，所述第二延伸部4頂端連接所述第三支部10，所述第二延伸部4之左側邊頂端連接所述第三延伸部5，所述第二延伸部4之左側邊頂端向左延伸形成所述第三延伸部5。 The bottom end of the second extension portion 4 is separated from the grounding portion 20 by a distance, the second extension portion 4 is perpendicular to the first extension portion 3, and the bottom end of the second extension portion 4 is connected to the The first extension 3, the top end of the second extension 4 is connected to the third branch 10, the top end of the left side of the second extension 4 is connected to the third extension 5, and the second extension 4 The top end of the left side extends to the left to form the third extension portion 5.

所述第二延伸部4左側邊、所述第三延伸部5下側邊、所述第一凸出部14及所述饋入部2上側邊之間形成一第一間隙16。也就是說，所述第一間隙16設置於所述饋入部2、所述第一延伸部3、所述第二延伸部4、所述第三延伸部5及所述第一凸出部14之間。 A first gap 16 is formed between the left side of the second extension part 4, the lower side of the third extension part 5, the first protruding part 14 and the upper side of the feeding part 2. In other words, the first gap 16 is provided in the feeding portion 2, the first extension portion 3, the second extension portion 4, the third extension portion 5, and the first protruding portion 14. between.

所述第三延伸部5平行於所述饋入部2、所述第一延伸部3及所述接地部20，所述第三延伸部5右端連接所述第二延伸部4之左側邊頂端，所述第三延伸部5左端連接所述第四延伸部6，所述第三延伸部5左端向上延伸形成所述第四延伸部6。在本實施例中，所述第二延伸部4上端緣與所述第三延伸部5上側邊平齊。 The third extension portion 5 is parallel to the feeding portion 2, the first extension portion 3, and the grounding portion 20, and the right end of the third extension portion 5 is connected to the top end of the left side of the second extension portion 4, The left end of the third extension portion 5 is connected to the fourth extension portion 6, and the left end of the third extension portion 5 extends upward to form the fourth extension portion 6. In this embodiment, the upper edge of the second extension part 4 is flush with the upper side of the third extension part 5.

所述第四延伸部6右側邊底端連接所述第三延伸部5，所述第四延伸部6左側邊底端連接所述第五延伸部7，所述第三延伸部5與所述第四延伸部6連接處設有一第二凸出部15。所述第二凸出部15設置於所述第三延伸部5上側邊與所述第四延伸部6右側邊之間。所述第四延伸部6左側邊頂端連接所述第一支部8，所述第四延伸部6左側邊頂端向左延伸形成所述第一支部8。 The bottom end of the right side of the fourth extension portion 6 is connected to the third extension portion 5, the bottom end of the left side of the fourth extension portion 6 is connected to the fifth extension portion 7, and the third extension portion 5 is connected to the A second protruding portion 15 is provided at the junction of the fourth extension portion 6. The second protruding portion 15 is disposed between the upper side of the third extension portion 5 and the right side of the fourth extension portion 6. The top end of the left side of the fourth extension portion 6 is connected to the first branch 8, and the top end of the left side of the fourth extension 6 extends to the left to form the first branch 8.

所述第五延伸部7下側邊與所述第三延伸部5下側邊齊平，因此，所述第五延伸部7平行於所述饋入部2、所述第一延伸部3及所述接地部20。所述第五延伸部7之右端緣連接所述第四延伸部6，所述第四延伸部6左側邊底端向左延伸形成所述第五延伸部7。所述第五延伸部7之左端緣上側連接所述第二支部9，所述第五延伸部7之左端緣上側向左延伸形成所述第二支部9。所述第五延伸部7之左端緣下側連接所述環形部11，所述第五延伸部7之左端緣下側向左延伸形成所述環形部11。 The lower side of the fifth extension portion 7 is flush with the lower side of the third extension portion 5. Therefore, the fifth extension portion 7 is parallel to the feeding portion 2, the first extension portion 3, and the third extension portion 5. Mentioned grounding portion 20. The right end edge of the fifth extension portion 7 is connected to the fourth extension portion 6, and the bottom end of the left side of the fourth extension portion 6 extends to the left to form the fifth extension portion 7. The upper side of the left end edge of the fifth extension portion 7 is connected to the second branch portion 9, and the upper side of the left end edge of the fifth extension portion 7 extends to the left to form the second branch portion 9. The lower side of the left end edge of the fifth extension portion 7 is connected to the ring portion 11, and the lower side of the left end edge of the fifth extension portion 7 extends to the left to form the ring portion 11.

所述第三延伸部5上側邊、所述第四延伸部6右側邊、所述第二凸出部15及所述第三支部10之間形成一第二間隙17。也就是說，所述第二間隙17設置於所述第三延伸部5、所述第四延伸部6、所述第二凸出部15及所述第三支部10之間。 A second gap 17 is formed between the upper side of the third extension portion 5, the right side of the fourth extension portion 6, the second protruding portion 15 and the third branch portion 10. In other words, the second gap 17 is provided between the third extension portion 5, the fourth extension portion 6, the second protrusion portion 15 and the third branch portion 10.

所述第一支部8右端連接所述第四延伸部6左側邊頂端，所述第一支部8平行於所述饋入部2與所述接地部20。所述第一支部8包括一第一橫部81與一第一豎直部82，所述第一橫部81橫向延伸於所述第四延伸部6左側邊頂端，所述第一支部8之所述第一橫部81右端連接於所述第四延伸部6左側邊頂端，所述第一橫部81左端向下延伸形成所述第一豎直部82，所述第一豎直部82底端為自由端，所述第一豎直部82與所述第二支部9彼此垂直並保持一距離。 The right end of the first branch portion 8 is connected to the top end of the left side of the fourth extension portion 6, and the first branch portion 8 is parallel to the feeding portion 2 and the grounding portion 20. The first branch 8 includes a first transverse portion 81 and a first vertical portion 82. The first transverse portion 81 extends transversely to the top end of the left side of the fourth extension portion 6, and the first branch 8 The right end of the first horizontal portion 81 is connected to the top end of the left side of the fourth extension portion 6, the left end of the first horizontal portion 81 extends downward to form the first vertical portion 82, and the first vertical portion 82 The bottom end is a free end, and the first vertical portion 82 and the second branch portion 9 are perpendicular to each other and maintain a distance.

在本實施例中，所述饋入點1、所述饋入部2、所述第一延伸部3、所述第二延伸部4、所述第三延伸部5、所述第四延伸部6及所述第一支部8組成一第一輻射部200。 In this embodiment, the feeding point 1, the feeding portion 2, the first extension portion 3, the second extension portion 4, the third extension portion 5, and the fourth extension portion 6 And the first branch 8 constitute a first radiating part 200.

在本創作多頻天線100用於無線通訊時，電流由所述饋入點1饋入，電流經過所述第一輻射部200可振盪出的頻段為698MHZ-960MHZ。改變所述下地部12之長度可調整698MHZ-960MHZ頻段之頻寬。 When the multi-frequency antenna 100 of the present invention is used for wireless communication, the current is fed from the feeding point 1, and the frequency band that the current can oscillate through the first radiating part 200 is 698MHZ-960MHZ. Changing the length of the lower part 12 can adjust the bandwidth of the 698MHZ-960MHZ frequency band.

在本創作多頻天線100用於無線通訊時，電流由所述饋入點1饋入，電流經過所述饋入部2、所述第一延伸部3、所述第二延伸部4、所述第三延伸部5及所述第四延伸部6，透過調整所述第一間隙16與所述第二間隙17的寬度，可振盪出的頻段為1710MHZ-2300MHZ。在具體實施則不限於此，調整所述第一間隙16與所述第二間隙17的寬度可改變頻寬。 When the multi-frequency antenna 100 of this invention is used for wireless communication, the current is fed from the feeding point 1, and the current passes through the feeding part 2, the first extension part 3, the second extension part 4, and the By adjusting the width of the first gap 16 and the second gap 17 of the third extension portion 5 and the fourth extension portion 6, the frequency band that can be oscillated is 1710MHZ-2300MHZ. The specific implementation is not limited to this. Adjusting the width of the first gap 16 and the second gap 17 can change the bandwidth.

所述第二支部9右端連接所述第五延伸部7之左端緣上側，所述第二支部9由所述第五延伸部7左端緣上側向左延伸所形成，所述第二支部9平行於所述饋入部2與所述接地部20。所述第二支部9為一橫向設置之條形。所述第二支部9設置於所述第一支部8、所述第一豎直部82與所述環形部11之間，所述第二支部9與所述第一支部8皆延伸於所述饋入部2同一側。所述第二支部9左端為自由端，所述第二支部9與所述第一支部8之所述第一豎直部82彼此垂直並保持一距離。 The right end of the second branch portion 9 is connected to the upper side of the left end edge of the fifth extension portion 7. The second branch portion 9 is formed by extending leftward from the upper side of the left end edge of the fifth extension portion 7, and the second branch portion 9 is parallel In the feeding portion 2 and the grounding portion 20. The second branch 9 is in the shape of a horizontally arranged bar. The second branch 9 is disposed between the first branch 8, the first vertical part 82 and the annular part 11, and the second branch 9 and the first branch 8 both extend in the The feeding part 2 is on the same side. The left end of the second branch portion 9 is a free end, and the second branch portion 9 and the first vertical portion 82 of the first branch portion 8 are perpendicular to each other and maintain a distance.

在本實施例中，所述饋入點1、所述饋入部2、所述第一延伸部3、所述第二延伸部4、所述第三延伸部5、所述第五延伸部7及所述第二支部9組成一第二輻射部300。 In this embodiment, the feeding point 1, the feeding portion 2, the first extension portion 3, the second extension portion 4, the third extension portion 5, and the fifth extension portion 7 And the second branch 9 constitute a second radiating part 300.

在本創作多頻天線100用於無線通訊時，電流由所述饋入點1饋入，電流經過所述第二輻射部300可振盪出的頻段為2300MHZ-2600MHZ。改變所述下地部12之長度可調整2300MHZ-2600MHZ頻段之頻寬。所述第二輻射部300與所述第一輻射部200之間共振產生出的頻段為3300MHZ-3800MHZ。 When the multi-frequency antenna 100 of the present invention is used for wireless communication, the current is fed from the feeding point 1, and the frequency band that the current can oscillate through the second radiating part 300 is 2300MHZ-2600MHZ. Changing the length of the lower part 12 can adjust the bandwidth of the 2300MHZ-2600MHZ frequency band. The frequency band generated by the resonance between the second radiating part 300 and the first radiating part 200 is 3300MHZ-3800MHZ.

所述第三支部10底端連接所述第二延伸部4之頂端，所述第三支部10由所述第二延伸部4之頂端縱向延伸後再橫向延伸所形成，所述第三支部10底端連接於所述第二延伸部4，所述第三支部10平行於所述饋入部2與所述接地部20。所述第三支部10為一橫向設置之條形。所述第三支部10延伸於所述饋入部2另一側。 The bottom end of the third branch portion 10 is connected to the top end of the second extension portion 4, and the third branch portion 10 is formed by longitudinally extending the top end of the second extension portion 4 and then laterally extending, the third branch portion 10 The bottom end is connected to the second extension portion 4, and the third branch portion 10 is parallel to the feeding portion 2 and the grounding portion 20. The third branch 10 is in the shape of a horizontally arranged strip. The third branch portion 10 extends on the other side of the feeding portion 2.

所述第三支部10包括一第二豎直部101、一第二橫部102及一第三凸出部103，所述第二豎直部101縱向延伸於所述第二延伸部4頂端，所述第二豎直部101底端連接所述第二延伸部4，所述第二豎直部101頂端橫向延伸形成所述第二橫部102，所述第二橫部102右端緣與所述接地部20右端緣平齊，所述第二橫部102左端與所述第三延伸部5保持一距離。所述第二豎直部101與所述第二橫部102連接處設有所述第三凸出部103，所述第二豎直部101位於所述第二橫部102下側邊中間。在本實施例中，所述第三支部10上側邊與所述第一支部8上側邊齊平。 The third branch portion 10 includes a second vertical portion 101, a second lateral portion 102 and a third protruding portion 103, and the second vertical portion 101 extends longitudinally at the top end of the second extension portion 4, The bottom end of the second vertical portion 101 is connected to the second extension portion 4, and the top end of the second vertical portion 101 extends laterally to form the For the second horizontal portion 102, the right end edge of the second horizontal portion 102 is flush with the right end edge of the grounding portion 20, and the left end of the second horizontal portion 102 is kept at a distance from the third extension portion 5. The third protruding portion 103 is provided at the connection between the second vertical portion 101 and the second horizontal portion 102, and the second vertical portion 101 is located in the middle of the lower side of the second horizontal portion 102. In this embodiment, the upper side of the third branch 10 is flush with the upper side of the first branch 8.

在本實施例中，所述饋入點1、所述饋入部2、所述第一延伸部3、所述第二延伸部4及所述第三支部10組成一第三輻射部400。 In this embodiment, the feeding point 1, the feeding portion 2, the first extension portion 3, the second extension portion 4 and the third branch portion 10 constitute a third radiating portion 400.

在本創作多頻天線100用於無線通訊時，電流由所述饋入點1饋入，電流經過所述第三輻射部400可振盪出的頻段為3300MHZ-5000MHZ。改變所述下地部12之長度可調整3300MHZ-5000MHZ頻段之頻寬。 When the multi-frequency antenna 100 of the present invention is used for wireless communication, the current is fed by the feeding point 1, and the frequency band that the current can oscillate through the third radiating part 400 is 3300MHZ-5000MHZ. Changing the length of the lower part 12 can adjust the bandwidth of the 3300MHZ-5000MHZ frequency band.

所述環形部11上端連接所述第五延伸部7之左端緣下側，所述環形部11由所述第五延伸部7向左橫向延伸所形成。所述環形部11用於增加所述第一輻射部200低頻頻寬，所述環形部11、所述第二支部9與所述第一支部8延伸於所述饋入部2同一側。 The upper end of the ring portion 11 is connected to the lower side of the left end edge of the fifth extension portion 7, and the ring portion 11 is formed by the fifth extension portion 7 extending laterally to the left. The ring portion 11 is used to increase the low frequency bandwidth of the first radiating portion 200, and the ring portion 11, the second branch portion 9 and the first branch portion 8 extend on the same side of the feeding portion 2.

所述環形部11包括一第一線段111、一第二線段112、一第三線段113、一第四線段114及一第五線段115，所述第一線段111橫向延伸於所述第五延伸部7左端緣下側，所述環形部11之所述第一線段111右端連接於所述第五延伸部7下部。 The ring portion 11 includes a first line segment 111, a second line segment 112, a third line segment 113, a fourth line segment 114, and a fifth line segment 115. The first line segment 111 extends transversely to the first line segment. On the lower side of the left end edge of the five extension portion 7, the right end of the first line segment 111 of the ring portion 11 is connected to the lower portion of the fifth extension portion 7.

所述第一線段111左端連接所述第二線段112，所述第一線段111左端向下延伸形成所述第二線段112，所述第二線段112垂直於所述第一線段111。 The left end of the first line segment 111 is connected to the second line segment 112, the left end of the first line segment 111 extends downward to form the second line segment 112, and the second line segment 112 is perpendicular to the first line segment 111 .

所述第二線段112底端連接所述第三線段113，所述第二線段112底端向右延伸形成所述第三線段113，所述第三線段113垂直於所述第二線段112，所述第三線段113平行於所述第一線段111。 The bottom end of the second line segment 112 is connected to the third line segment 113, the bottom end of the second line segment 112 extends to the right to form the third line segment 113, and the third line segment 113 is perpendicular to the second line segment 112, The third line segment 113 is parallel to the first line segment 111.

所述第三線段113右端連接所述第四線段114，所述第三線段113右端向上延伸形成所述第四線段114，所述第四線段114垂直於所述第三線段113，所述第四線段114平行於所述第二線段112。 The right end of the third line segment 113 is connected to the fourth line segment 114, the right end of the third line segment 113 extends upward to form the fourth line segment 114, and the fourth line segment 114 is perpendicular to the third line segment 113. The four line segment 114 is parallel to the second line segment 112.

所述第四線段114頂端連接所述第五線段115，所述第四線段114頂端向右延伸形成所述第五線段115，所述第五線段115之右端連接於所述饋入部2，更具體來說，所述第五線段115之右端連接於所述饋入部2之所述第一端緣21上側，所述第五線段115垂直於所述第四線段114，所述第五線段115平行於所述第三線段113與所述第一線段111。 The top end of the fourth line segment 114 is connected to the fifth line segment 115, the top end of the fourth line segment 114 extends to the right to form the fifth line segment 115, and the right end of the fifth line segment 115 is connected to the feeding portion 2, and Specifically, the right end of the fifth line segment 115 is connected to the upper side of the first end edge 21 of the feeding portion 2, the fifth line segment 115 is perpendicular to the fourth line segment 114, and the fifth line segment 115 Parallel to the third line segment 113 and the first line segment 111.

在本實施例中，所述第五線段115長度最長，所述第一線段111長度大於所述第二線段112長度，所述第二線段112長度大於所述第三線段113長度，所述第三線段113長度大於所述第四線段114長度。在本實施例中，所述第一線段111與所述第二線段112寬度相同，所述第三線段113、所述第四線段114及所述第五線段115寬度相同，所述第一線段111寬度大於所述第三線段113。 In this embodiment, the length of the fifth line segment 115 is the longest, the length of the first line segment 111 is greater than the length of the second line segment 112, the length of the second line segment 112 is greater than the length of the third line segment 113, The length of the third line segment 113 is greater than the length of the fourth line segment 114. In this embodiment, the first line segment 111 and the second line segment 112 have the same width, the third line segment 113, the fourth line segment 114, and the fifth line segment 115 have the same width, and the first line segment 111 has the same width as the second line segment 112. The width of the line segment 111 is greater than that of the third line segment 113.

在本實施例中，所述環形部11之所述第一線段111左端緣與所述第二支部9自由端平齊，所述環形部11之所述第三線段113下側邊與所述接地部20下側邊平齊。在本實施例中，調整所述環形部11之所述第一線段111、所述第二線段112、所述第三線段113、所述第四線段114及所述第五線段115之間的內圈寬度可改變所述第一輻射部200之低頻頻寬。在本實施例中，調整所述環形部11之所述第一線段111、所述第二線段112、所述第三線段113、所述第四線段114及所述第五線段115路徑長度可改變所述第二輻射部300之頻段，在具體實施時則不限於此。 In this embodiment, the left end edge of the first line segment 111 of the ring portion 11 is flush with the free end of the second branch portion 9, and the lower side of the third line segment 113 of the ring portion 11 is flush with the free end of the second branch portion 9. The bottom side of the grounding portion 20 is flush. In this embodiment, the adjustment between the first line segment 111, the second line segment 112, the third line segment 113, the fourth line segment 114, and the fifth line segment 115 of the ring portion 11 The width of the inner ring can change the low frequency bandwidth of the first radiating part 200. In this embodiment, the path lengths of the first line segment 111, the second line segment 112, the third line segment 113, the fourth line segment 114, and the fifth line segment 115 of the ring portion 11 are adjusted The frequency band of the second radiating part 300 can be changed, but it is not limited to this in specific implementation.

在本實施例中，所述第一輻射部200頻段為698-960MHZ，所述第二輻射部300頻段為2300MHZ-2600MHZ，所述第三輻射部400頻段為 3300MHZ-5000MHZ，所述環形部11增加所述第一輻射部200低頻頻寬。使本創作多頻天線100在有限的體積下增加頻段。 In this embodiment, the frequency band of the first radiating part 200 is 698-960MHZ, the frequency band of the second radiating part 300 is 2300MHZ-2600MHZ, and the frequency band of the third radiating part 400 is 3300MHZ-5000MHZ, the annular portion 11 increases the low frequency bandwidth of the first radiating portion 200. This enables the multi-frequency antenna 100 of the present invention to increase the frequency band in a limited volume.

在本實施例中，所述環形部11延伸長度大於所述第一輻射部200延伸長度，所述第一輻射部200延伸長度大於所述第三輻射部400延伸長度，所述第三輻射部400延伸長度大於所述第二輻射部300延伸長度。 In this embodiment, the extension length of the annular portion 11 is greater than the extension length of the first radiating portion 200, the extension length of the first radiating portion 200 is greater than the extension length of the third radiating portion 400, and the third radiating portion The extension length 400 is greater than the extension length of the second radiating portion 300.

請參照第二圖與第三圖所示，為本創作多頻天線100的電壓駐波比(Voltage Standing Wave Ratio，VSWR)測試圖與史密斯圖。當本創作多頻天線100操作於698MHZ時，電壓駐波比為4.8253(圖中M1)，當本創作多頻天線100操作於960MHZ時，電壓駐波比為3.1055(圖中M2)，當本創作多頻天線100操作於1710MHZ時，電壓駐波比為4.4755(圖中M3)，當本創作多頻天線100操作於2170MHZ時，電壓駐波比為2.4888(圖中M4)，當本創作多頻天線100操作於2300MHZ時，電壓駐波比為3.5983(圖中M5)，當本創作多頻天線100操作於2690MHZ時，電壓駐波比為3.2337(圖中M6)，當本創作多頻天線100操作於3300MHZ時，電壓駐波比為3.3867(圖中M7)，當本創作多頻天線100操作於3800MHZ時，電壓駐波比為1.7486(圖中M8)，當本創作多頻天線100操作於4400MHZ時，電壓駐波比為4.5314(圖中M9)，當本創作多頻天線100操作於5000MHZ時，電壓駐波比為2.3172(圖中M10)。因此，本創作多頻天線100可穩定地操作於698-960MHZ、2300-2600MHZ及3300-5000MHZ之頻帶範圍。 Please refer to the second and third diagrams, which are the voltage standing wave ratio (VSWR) test diagram and Smith diagram of the multi-frequency antenna 100 of this creation. When the creative multi-frequency antenna 100 operates at 698MHZ, the voltage standing wave ratio is 4.8253 (M1 in the figure). When the creative multi-frequency antenna 100 operates at 960 MHz, the voltage standing wave ratio is 3.1055 (M2 in the figure). When the creative multi-frequency antenna 100 operates at 1710MHZ, the voltage standing wave ratio is 4.4755 (M3 in the picture). When the creative multi-frequency antenna 100 operates at 2170MHZ, the voltage standing wave ratio is 2.4888 (M4 in the picture). When the frequency antenna 100 operates at 2300MHZ, the voltage standing wave ratio is 3.5983 (M5 in the figure). When the original multi-frequency antenna 100 operates at 2690MHZ, the voltage standing wave ratio is 3.2337 (M6 in the picture). When 100 operates at 3300MHZ, the voltage standing wave ratio is 3.3867 (M7 in the picture). When the original multi-frequency antenna 100 operates at 3800MHZ, the voltage standing wave ratio is 1.7486 (M8 in the picture). When the original multi-frequency antenna 100 operates At 4400 MHz, the voltage standing wave ratio is 4.5314 (M9 in the figure). When the multi-frequency antenna 100 of the present invention operates at 5000 MHz, the voltage standing wave ratio is 2.3172 (M10 in the figure). Therefore, the multi-frequency antenna 100 of the present invention can stably operate in the frequency bands of 698-960MHZ, 2300-2600MHZ, and 3300-5000MHZ.

請參閱第四圖所示，為本創作多頻天線100的平均功率圖，表示本創作多頻天線100的損耗程度，平均功率越大，對天線的損耗越小，使天線的輻射能量越大。在本實施例中，低頻頻寬的平均功率皆能在-3內。 Please refer to the fourth figure, the average power diagram of this creative multi-frequency antenna 100, which shows the degree of loss of this creative multi-frequency antenna 100. The greater the average power, the smaller the loss to the antenna and the greater the radiated energy of the antenna. . In this embodiment, the average power of the low frequency bandwidth can all be within -3.

請參閱第五圖所示，為本創作多頻天線100的等效全向輻射功率圖，表示本創作多頻天線100在每個頻率輻射的最大值。在本實施例中，在全頻段內的等效全向輻射功率的峰值落在同一範圍內，即為功率穩定。 Please refer to the fifth figure, which is the equivalent omnidirectional radiation power diagram of the multi-frequency antenna 100 of this creative, which shows the maximum radiation of the multi-frequency antenna 100 of this creative at each frequency. In this embodiment, the peak value of the equivalent omnidirectional radiation power in the full frequency band falls within the same range, that is, the power is stable.

請參閱第六圖及表一所示，為本創作多頻天線100的效率圖及數據圖，表示平均功率轉換成天線輻射的效率，在不同頻率下，效率值越高越好。在本實施例中，低頻頻寬皆在50%以上，因此，本創作多頻天線100能在有限空間中達到低頻頻寬的高效率且能保持高頻的頻寬與效率。 Please refer to Figure 6 and Table 1. The efficiency graph and data graph of this creative multi-frequency antenna 100 show the efficiency of converting average power into antenna radiation. At different frequencies, the higher the efficiency, the better. In this embodiment, the low frequency bandwidth is above 50%. Therefore, the inventive multi-frequency antenna 100 can achieve high efficiency of low frequency bandwidth and maintain high frequency bandwidth and efficiency in a limited space.

綜上所述，本創作多頻天線100藉由饋入點1饋入電訊號，所述第一輻射部200頻段為698-960MHZ，所述第二輻射部300頻段為2300MHZ-2600MHZ，所述第三輻射部400頻段為3300MHZ-5000MHZ，所述環形部11增加所述第一輻射部200低頻頻寬。因此，本創作多頻天線100能在有限體積的情況下增加頻段，適應電子產品微型化的發展趨勢。 In summary, the creative multi-frequency antenna 100 feeds electrical signals through the feed point 1. The first radiating part 200 has a frequency band of 698-960MHZ, and the second radiating part 300 has a frequency band of 2300MHZ-2600MHZ. The 400 frequency band of the three radiating parts is 3300MHZ-5000MHZ, and the ring part 11 increases the low frequency bandwidth of the first radiating part 200. Therefore, the multi-frequency antenna 100 of the present invention can increase the frequency band in a limited volume, and adapt to the development trend of miniaturization of electronic products.

100:多頻天線 100: Multi-frequency antenna

1:饋入點 1: feed point

2:饋入部 2: Feeding part

20:接地部 20: Grounding part

21:第一端緣 21: The first edge

22:第二端緣 22: second edge

23:第一側邊 23: First side

24:第二側邊 24: second side

3:第一延伸部 3: The first extension

30:電路板 30: circuit board

4:第二延伸部 4: The second extension

5:第三延伸部 5: Third extension

6:第四延伸部 6: The fourth extension

7:第五延伸部 7: Fifth extension

8:第一支部 8: The first branch

81:第一橫部 81: The first cross

82:第一豎直部 82: first vertical part

9:第二支部 9: The second branch

10:第三支部 10: The third branch

101:第二豎直部 101: second vertical part

102:第二橫部 102: Second Cross

103:第三凸出部 103: Third protrusion

11:環形部 11: Ring part

111:第一線段 111: first line segment

112:第二線段 112: second line segment

113:第三線段 113: Third line segment

114:第四線段 114: fourth line segment

115:第五線段 115: Fifth line segment

12:下地部 12: Lower Ground

13:連接部 13: Connection part

14:第一凸出部 14: The first protrusion

15:第二凸出部 15: second protrusion

16:第一間隙 16: first gap

17:第二間隙 17: second gap

200:第一輻射部 200: First Radiation Department

300:第二輻射部 300: The second radiation department

400:第三輻射部 400: Third Radiation Department

Claims

A multi-frequency antenna includes: a grounding part; a feeding part, the feeding part is provided with a first side and a second side opposite to each other, and a first end edge and a second end edge opposite to each other. The first side is close to the grounding part and keeps a distance from the grounding part; a feeding point is arranged at the feeding part and is close to the first side; the lower ground part is separated from the feeding part The first end edge is formed by extending and connected between the feeding portion and the grounding portion; a first extension portion is formed by the extension of the second end edge of the feeding portion; and a second extension portion , Formed by the extension of the end of the first extension; a third extension, formed by the extension of the second extension; a fourth extension, formed by the extension of the third extension; A fifth extension portion formed by the extension of the fourth extension portion; a first branch portion formed by the extension of the end of the fourth extension portion; a second branch portion formed by the extension of the end of the fifth extension portion, The first branch portion and the second branch portion extend on the same side of the feeding portion; a third branch portion is formed by extending the end of the second extension portion, and the third branch portion extends on the other side of the feeding portion Side; and an annular portion formed by the extension of the end of the fifth extension, the end of the annular portion is connected to the first end edge of the feeding portion, the annular portion, the first branch and the second The branches extend on the same side of the feeding part.

The multi-frequency antenna according to claim 1, wherein the feeding point, the feeding portion, the first extension portion, the second extension portion, the third extension portion, and the fourth extension portion And the first branch part form a first radiating part.

The multi-frequency antenna according to claim 2, wherein the feeding point, the feeding portion, the first extension portion, the second extension portion, the third extension portion, and the fifth extension portion And the second branch part form a second radiating part.

The multi-frequency antenna according to claim 3, wherein the feeding point, the feeding portion, the first extension portion, the second extension portion, and the third branch portion constitute a third radiating portion.

The multi-frequency antenna according to claim 4, wherein the extension length of the loop portion is greater than the extension length of the first radiating portion, the extension length of the first radiating portion is greater than the extension length of the third radiating portion, and the third The extension length of the radiating portion is greater than the extension length of the second radiating portion.

The multi-frequency antenna according to claim 5, wherein the first branch portion includes a first horizontal portion and a first vertical portion, and the first horizontal portion extends laterally at the top of the left side of the fourth extension portion, The right end of the first horizontal portion of the first branch is connected to the top end of the left side of the fourth extension, the left end of the first horizontal portion extends downward to form the first vertical portion, and the first vertical The portion and the second branch portion are perpendicular to each other and maintain a distance.

The multi-band antenna according to claim 6, wherein the third branch portion includes a second vertical portion, a second horizontal portion, and a third protruding portion, and the second vertical portion extends longitudinally from the first The top ends of the two extension parts, the bottom end of the second vertical part is connected to the second extension part, the top end of the second vertical part extends transversely to form the second transverse part, and the right end edge of the second transverse part is connected to the second transverse part. The right end edge of the grounding portion is flush, the left end of the second horizontal portion is kept a distance from the fourth extension portion, and the third protrusion is provided at the junction of the second vertical portion and the second horizontal portion The upper side of the third branch is flush with the upper side of the first branch.

The multi-frequency antenna according to claim 7, wherein the loop portion includes a first line segment, a second line segment, a third line segment, a fourth line segment, and a fifth line segment, and the first line segment is transversely Extending on the lower side of the left end of the fifth extension, the left end of the first line segment extends downward to form the second line segment, the bottom end of the second line segment extends to the right to form the third line segment, and the first line segment The right end of the three line segments extends upward to form the fourth line segment, the top end of the fourth line segment extends to the right to form the fifth line segment, the right end of the fifth line segment is connected to the feeding part, and the right end of the fifth line segment is connected On the upper part of the first end edge of the feeding part.

The multi-frequency antenna according to claim 1, wherein a first protrusion is provided at the connection between the first extension and the second extension, and the left side of the second extension is under the third extension. A first gap is formed between the side, the first protruding portion, and the upper side of the feeding portion, and the first gap is provided in the feeding portion, the first extension portion, and the second extension Part, the third extension part and the first protruding part.

The multi-frequency antenna according to claim 1, wherein a second protrusion is provided at the connection between the third extension and the fourth extension, and the upper side of the third extension and the fourth extension A second gap is formed between the right side of the part, the second protrusion and the third branch, and the second gap is provided in the third extension, the fourth extension, and the second protrusion. Between the Ministry and the third branch.