TWM601466U - Multi-band antenna - Google Patents

Abstract

This creation discloses a multi-frequency antenna, which includes: a circuit board; a supporting portion formed by extending from one side of the circuit board; a first radiating portion surrounding the side and upper surface of the supporting portion, and both ends of the first radiating portion are respectively provided A feeding portion and a lower ground portion are formed extending upward along the front side of the support portion, the lower ground portion is kept at a distance from the feeding portion; a second radiating portion is bent and arranged on the support after the circuit board extends upward along the front side of the support portion On the upper surface of the part, the second radiating part is arranged on one side of the feeding part and between the feeding part and the lower ground part; and a third radiating part is formed by extending the circuit board, and the third radiating part is arranged on the front side of the supporting part, The third radiating part is arranged on the other side of the feeding part, and the third radiating part, the feeding part and the lower part are all arranged on the same surface of the supporting part. Therefore, the multi-frequency antenna of the present invention increases the frequency band under the limited volume.

Description

Multi-frequency antenna

This creation relates to an antenna, in particular to a multi-frequency antenna that increases the frequency band in a limited volume.

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 will also be used. The frequency band also overlaps with the original 4G frequency band. Therefore, there is an increasing demand for mobile communication products such as mobile phone antennas.

However, due to the market trend, the antennas in mobile communication devices are housed inside the device, so the antenna is limited by space, and a small flat-panel inverted F antenna (PIFA) is used as the antenna of the mobile communication device, which improves the application Bandwidth and antenna area have certain restrictions, so they cannot meet the needs of multiple frequency bands.

Therefore, it is necessary to provide a multi-frequency antenna that increases the frequency band in a limited volume.

The purpose of this creation is to provide a multi-frequency antenna, which includes: a circuit board provided with a ground; a support part arranged on one side of the circuit board; a first radiating part, the first radiating part surrounds the support On the side surface and the upper surface of the first radiating portion, both ends of the first radiating portion are respectively provided with a feeding portion and a lower ground portion extending upwardly along the front surface of the supporting portion. One end of the feeding portion is close to the ground and is Keep a distance to the ground, one end of the lower ground portion is connected to the ground, and the lower ground portion is kept a distance from the feeding portion; a second radiating portion extends upward from the circuit board along the front side of the support portion The second radiating part is arranged on the upper surface of the supporting part, the second radiating part is arranged on one side of the feeding part and between the feeding part and the lower ground part; and a third radiating part is formed by The circuit board is extended, the third radiating part is arranged on the front side of the supporting part, the third radiating part is arranged on the other side of the feeding part, the third radiating part, the feeding part and the The lower ground portions are all arranged on the same surface of the supporting portion; the extension length of the first radiation portion is greater than the extension length of the second radiation portion, and the extension length of the second radiation portion is greater than the extension length of the third radiation portion.

Optionally, the first radiating part is provided with a main body, an adjusting part, a first radiating extension, and a second radiating extension, and the main body surrounds the four sides and the upper surface of the support part, The top of the rear end of the main body portion extends to the upper surface of the support portion to form the adjustment portion, and the top of the left side of the main body portion extends upward along the left side of the support portion and is bent and arranged on the upper surface of the support portion The first radiating extension part is formed, and after the top of the left side of the main body part extends upward along the left side of the support part, it is bent and arranged on the upper surface of the support part to form the second radiating extension part. A radiation extension part is arranged between the main body part and the second radiation extension part, and the second radiation extension part and the first radiation extension part are arranged on the same side.

Optionally, the main body portion includes the feeding portion formed extending upward along the front side of the support portion, the feeding portion is provided with a feeding point, and the feeding point is provided on one side of the feeding portion, The feeding portion and the circuit board are perpendicular to each other, one end of the feeding portion is close to the ground and keeping a distance from the ground, and the other end extends to the left along the upper surface of the supporting portion to form a first section, One end of the first section extends downward along the left side of the support portion to form a second section, and one end of the second section extends backward along the left side of the support portion to form a third section. One end of the third section extends rightward along the rear side of the support portion to form a fourth section, and one end of the fourth section extends forward along the right side of the support portion to form a fifth section. One end of the five sections extends upward along the right side of the support portion to form a sixth section, and one end of the sixth section extends leftward along the upper surface of the support portion to form a seventh section. One end of the section extends down the front side of the support portion to the circuit board to form the lower ground portion, the lower ground portion and the circuit board are perpendicular to each other, and one end of the lower ground portion is in contact with the ground. A distance is maintained between the lower ground portion and the feeding portion, and a slot is provided on the adjusting portion.

Optionally, the first section and the fourth section are parallel to each other, the seventh section and the fourth section are parallel to each other, and the length of the first section is equal to that of the seventh section. The length is the same, the second section and the sixth section are parallel to each other and the same length, and the third section and the fifth section are parallel to each other and the same length.

Optionally, the first radiating extension portion includes a first connecting portion, a first extension portion, a second extension portion, a third extension portion, and a fourth extension portion. The middle section of the third section The top portion extends upward along the left side of the support portion to form the first connecting portion, one end of the first connecting portion extends in the direction of the fifth section to form the first extension portion, and one end of the first extension portion The second extension is formed after being bent in the direction of the fourth section, and one end of the second extension is bent in the direction of the fifth section and then extended to form the third extension. Three extension portions are bent in the direction of the first section and then extend to form the fourth extension portion, the first extension portion, the second extension portion, the third extension portion, and the fourth extension portion It is arranged on the upper surface of the supporting part.

Optionally, the second radiating extension portion includes a second connecting portion, a first inclined portion, a second inclined portion, and a fifth extending portion. The top of the rear section of the third section extends upward along the left side of the support section to form the second connecting portion, and one end of the second connecting section extends obliquely toward the first section to form the first inclined portion One end of the first inclined portion is bent toward the fourth section and then obliquely extends toward the fourth section to form the second inclined portion, and one end of the second inclined portion extends beyond the rear side of the support portion Edge, one end of the second oblique portion extends toward the fifth section to form the fifth extension portion, and the fifth extension portion is correspondingly above the fourth section and adjacent to the upper surface of the support portion, The first inclined portion, the second inclined portion, and the fifth extension portion are disposed on the upper surface of the supporting portion.

Optionally, the second radiating portion includes a third connecting portion, a sixth extending portion, a third oblique portion, and a seventh extending portion, and the third connecting portion is provided between the feeding portion and the Between the bottom portions, one end of the third connecting portion extends toward the fourth section to form the sixth extension portion, and one end of the sixth extension portion extends obliquely toward the fifth section to form the third Oblique portion, one end of the third oblique portion extends toward the fourth section to form the seventh extension portion, and the sixth extension portion, the third oblique portion, and the seventh extension portion are disposed on the The upper surface of the support.

Optionally, the third connecting portion and the feeding portion are parallel to each other, the third connecting portion and the lower base portion have the same length and are parallel to each other, and the sixth extension portion and the seventh extension portion are parallel to each other And the same length.

Optionally, the third radiating portion extends upward from one side of the circuit board to form an eighth extension, and the end of the eighth extension is bent toward the second section and extends laterally to form a ninth An extension part, the ninth extension part and the first section are parallel to each other, the length of the ninth extension part does not exceed the length of the first section, and the length of the eighth extension part is the same as that of the first section. The bottom part has the same length.

In order to describe in detail the technical content, structural features, and achieved objectives and effects of the multi-band antenna 100 of the present invention, the following examples are given in conjunction with the drawings for detailed description.

Please refer to the first and second figures, the multi-frequency antenna 100 of the present creation includes a first radiating part 10, a second radiating part 20, a third radiating part 30, a supporting part 40 and a circuit board 50. The circuit board 50 is provided with a ground 51, the upper surface of the circuit board 50 is provided with the support portion 40, the first radiation portion 10 surrounds the side and upper surface of the support portion 40, and the second radiation portion 20 extends upward from the upper surface of the circuit board 50 along the front side of the support portion 40 and then is bent on the upper surface of the support portion 40, and the third radiating portion 30 is provided on the front side of the support portion 40. In this embodiment, the first radiating part 10, the second radiating part 20 and the third radiating part 30 are on the same side of the circuit board 50.

Please refer to Figures 1 to 4, the first radiation portion includes a main body 11, an adjustment portion 12, a first radiation extension portion 13 and a second radiation extension portion 14. The main body portion 11 Surrounding the four sides and upper surface of the supporting portion 40, the top of the rear end of the main body 11 extends to the upper surface of the supporting portion 40 to form the adjusting portion 12, and the top of the left side of the main body 11 is along the After the left side of the support portion 40 extends upward, it is bent and arranged on the upper surface of the support portion 40 to form the first radiating extension portion 13, and the top of the left side of the main body portion 11 extends upward along the left side of the support portion 40 , The second radiating extension 14 is formed by bending the upper surface of the supporting portion 40, and the first radiating extension 13 is disposed between the main body portion 11 and the second radiating extension 14, so The second radiation extension portion 14 and the first radiation extension portion 13 are provided on the same side. The main body portion 11, the adjustment portion 12, the first radiation extension portion 13 and the second radiation extension portion 14 constitute the first radiation portion 10.

The main body portion 11 includes a feeding portion 110 extending upwardly along the front side of the supporting portion 40, the feeding portion 110 is provided with a feeding point 111, and the feeding point 111 is provided on the feeding portion 110. On the other hand, the feeding point 111 transmits current from the lower end of the feeding portion 110, the feeding portion 110 and the circuit board 50 are perpendicular to each other, and one end of the feeding portion 110 is close to the ground 51 and connected to the ground 51. Keeping a distance, the other end extends to the left along the upper surface of the supporting portion 40 to form a first section 112. The first section 112 is approximately in the shape of a long strip plate. The front edge of the upper surface of the supporting portion 40 extends, and one end of the first section 112 extends downward 50 along the left side of the supporting portion 40 to form a second section 113, and the second section 113 is substantially long. In the shape of a strip, the second section 113 extends along the front edge of the left side surface of the support portion 40, and one end of the second section 113 extends backward along the left side surface of the support portion 40 to form a third area In section 114, the third section 114 is substantially in the shape of a long strip plate, the third section 114 extends along the bottom edge of the left side of the support portion 40, and one end of the third section 114 extends along The rear side surface of the support portion 40 extends to the right to form a fourth section 115. The fourth section 115 is substantially in the shape of a strip plate. The fourth section 115 is along the bottom of the rear side surface of the support portion 40. The end edge extends, one end of the fourth section 115 extends forward along the right side of the support portion 40 to form a fifth section 116. The fifth section 116 is substantially in the shape of a long strip. The section 116 extends along the bottom edge of the right side surface of the support portion 40. One end of the fifth section 116 extends upward along the right side surface of the support portion 40 to form a sixth section 117. The section 117 is substantially in the shape of a long strip, the sixth section 117 extends along the front edge of the right side surface of the support portion 40, and one end of the sixth section 117 is leftward along the upper surface of the support portion 40 A seventh section 118 is extended. The seventh section 118 is elongated and plate-shaped. The seventh section 118 extends along the front edge of the upper surface of the supporting portion 40. The seventh section 118 One end extends down the front side of the supporting portion 40 to the circuit board 50 to form a lower ground portion 119. The lower ground portion 119 and the circuit board 50 are perpendicular to each other, and one end of the lower ground portion 119 is connected to the ground 51 Contact, the lower ground portion 119 and the feeding portion 110 maintain a distance.

The adjusting portion 12 is formed by extending from the top of the fourth section 115 to the upper surface of the supporting portion 40, the adjusting portion 12 is provided with a slot 121, and the slot 121 and the adjusting portion 12 are used for Adjust the resonance shift of the first radiation part 10 to a low frequency band. The slot 121 is provided with a first slot section 122 and a second slot section 123. The opening at one end of the first slot section 122 is opened at the rear end of the adjusting portion 12, and the first slot section 122 is along the Extending in the front and back direction of the support portion 40, one end of the second groove section 123 is connected to the other end of the first groove section 122, and the other end of the second groove section 123 forms an opening on the right side edge of the adjustment portion 12 The second groove section 123 extends along the left-right direction of the supporting portion 40, and the first groove section 122 and the second groove section 123 are perpendicular to each other to form an L shape.

The first radiating extension portion 13 includes a first connecting portion 131, a first extension portion 132, a second extension portion 133, a third extension portion 134, and a fourth extension portion 135. The third section The top of the middle section 114 extends upward along the left side of the supporting portion 40 to form the first connecting portion 131, and one end of the first connecting portion 131 extends toward the fifth section 116 to form the first extending portion 132 The first extension portion 132 is substantially in the shape of a long strip plate, the first extension portion 132 is disposed on the upper surface of the support portion 40, and the first extension portion 132 extends along the left and right direction of the support portion 40 One end of the first extension portion 132 is bent in the direction of the fourth section 115 and then extends to form the second extension portion 133. The second extension portion 133 is substantially in the shape of an elongated plate. The extension portion 133 is disposed on the upper surface of the support portion 40, the second extension portion 133 extends along the front and back direction of the support portion 40, and one end of the second extension portion 133 is bent toward the fifth section 116 The third extension portion 134 is formed by extending rearwardly. The third extension portion 134 is substantially in the shape of a long strip plate. The third extension portion 134 extends along the rear end of the upper surface of the support portion 40. The extension portion 134 extends along the left-right direction of the support portion 40, the third extension portion 134 is bent in the direction of the first section 112 and then extends to form the fourth extension portion 135, and the fourth extension portion 135 Roughly in the shape of an elongated plate, the fourth extension portion 135 is disposed on the upper surface of the support portion 40, and the fourth extension portion 135 extends along the front and back direction of the support portion 40.

The second radiating extension portion 14 includes a second connecting portion 141, a first inclined portion 142, a second inclined portion 143 and a fifth extending portion 144. The top of the rear section of the third section 114 extends upward along the left side of the support section 40 to form the second connecting portion 141, and one end of the second connecting portion 141 extends obliquely toward the first section 112. The first inclined portion 142, the first inclined portion 142 is substantially in the shape of an elongated plate, the first inclined portion 142 is disposed on the upper surface of the supporting portion 40, and one end of the first inclined portion 142 faces the The fourth section 115 is bent and extends obliquely toward the fourth section 115 to form the second inclined portion 143. The second inclined portion 143 is substantially in the shape of a strip plate, and the second inclined portion 143 The first inclined portion 142 and the second inclined portion 143 are disposed on the upper surface of the supporting portion 40, and are disposed on the first extending portion 132, the second extending portion 133, and the third section 114 Between the second inclined portion 143 and the fourth section 115, one end of the second inclined portion 143 extends beyond the rear edge of the support portion 40, and one end of the second inclined portion 143 extends toward the fifth section 116 to form the The fifth extension portion 144, the fifth extension portion 144 is substantially in the shape of an elongated plate, the fifth extension portion 144 corresponds to the upper portion of the fourth section 115, adjacent to the upper surface of the support portion 40, along The rear edge of the upper surface of the support portion 40 extends.

In this embodiment, the fourth section 115 of the first radiating portion 10 has the longest length, the feeding portion 110 and the lower ground portion 119 are parallel to each other, and the first section 112 and the fourth section 112 are parallel to each other. The sections 115 are parallel to each other, the seventh section 118 and the fourth section 115 are parallel to each other, the length of the first section 112 is the same as the length of the seventh section 118, and the second section 113 The sixth section 117 is parallel to each other and the same length, the third section 114 and the fifth section 116 are parallel to each other and the same length, the first extension 132 and the third extension 134 Parallel to each other, the second extension portion 133 and the fourth extension portion 135 are parallel to each other and have the same length.

In this embodiment, the length of the first connecting portion 131, the length of the second connecting portion 141, the length of the second section 113, and the length of the sixth section 117 are all the same, and the fifth extension portion 144 is parallel to the third extension portion 134, and the fifth extension portion 144 is disposed between the third extension portion 134 and the fourth section 115.

In this embodiment, the main body 11 generates a resonance of 824MHZ-960MHZ and a second harmonic of 1710MHZ, the adjustment section 12 shifts the resonance of the main body 11 to a low frequency band, and the first radiation extends The frequency of the part 13 is 900MHZ, and the coupling of the first radiation extension part 13 and the main part 11 can make the second harmonic frequency band of the main part 11 reach 1710-2170MHZ, so the first radiation part 10 can oscillate The frequency band out is the second harmonic frequency band of 824MHZ-960MHZ and 1710-2170MHZ.

When the multi-frequency antenna 100 of this creation is used for wireless communication, the current is fed by the feeding point 111, and the frequency band that the current can oscillate through the feeding part 110 and the first radiating part 10 is 824MHZ-960MHZ. In this embodiment, the second harmonic frequency band that the first radiating part 10 can oscillate through the coupling between the main body 11 and the first radiating extension 13 is 1710MHZ-2170MHZ, and the main body 11 is The frequency band that the second radiating extension 14 can oscillate through coupling is 2300MHZ-2690MHZ. In specific implementation, the distance between the fifth extension 144 and the fourth section 115 can be adjusted to adjust the bandwidth of the 2300MHZ-2690MHZ frequency band.

The second radiating portion 20 is formed by the upper surface of the circuit board 50 extending upwards and then bending to extend toward the fourth section 115. The second radiating portion 20 includes a third connecting portion 21 and a sixth connecting portion. Extending portion 22, a third inclined portion 23 and a seventh extending portion 24, the third connecting portion 21 is disposed between the feeding portion 110 and the lower ground portion 119, and one end of the third connecting portion 21 faces The fourth section 115 extends to form the sixth extension portion 22, the sixth extension portion 22 is substantially in the shape of a strip plate, the sixth extension portion 22 is disposed on the upper surface of the support portion 40, so The sixth extension portion 22 extends along the front and rear directions of the support portion 40, and one end of the sixth extension portion 22 extends obliquely toward the adjustment portion 12 to form the third oblique portion 23. The portion 23 is substantially in the shape of an elongated plate, the third inclined portion 23 is disposed on the upper surface of the supporting portion 40, and one end of the third inclined portion 23 extends toward the fourth section 115 to form the seventh extension Portion 24, the seventh extension portion 24 is substantially in the shape of an elongated plate, the seventh extension portion 24 is provided on the upper surface of the support portion 40, and the seventh extension portion 24 is along a line of the support portion 40 Extend in the front and back direction.

In this embodiment, the third connecting portion 21 and the feeding portion 110 are parallel to each other, the third connecting portion 21 and the lower ground portion 119 are the same length and parallel to each other, and the sixth extension portion 22 is parallel to each other. The seventh extension portions 24 are parallel to each other and have the same length, the sixth extension portion 22 and the fourth extension portion 135 are arranged in the same straight line along the front and back directions of the support portion 40, and the seventh extension portion 24 is provided Between the fourth extension portion 135 and the adjustment portion 12.

When the multi-frequency antenna 100 of the present creation is used for wireless communication, the second radiating part 20 is coupled with the feeding point 111 and the frequency band oscillated is 3300MHZ-3800MHZ. In the specific implementation, you can adjust the feed The distance between the inlet portion 110 and the third connecting portion 21 and the distance between the seventh extension portion 24 and the fourth extension portion 135 make the second radiating portion 20 and the first radiating portion The resonant frequency of 10 coupling becomes larger.

The third radiating portion 30 includes an eighth extension portion 31 that extends upward on one side of the circuit board 50. The end of the eighth extension portion 31 is bent toward the second section 113 and extends laterally to form a first九 Extension 32. The third radiating part 30 is disposed on the front side of the supporting part 40. The ninth extension portion 32 extends along the top edge of the front end surface of the support portion 40, and the distance between the ninth extension portion 32 and the first section 112 is very small.

In this embodiment, the second radiating portion 20 is on one side of the feeding portion 110, the third radiating portion 30 is provided on the other side of the feeding portion 110, and the third radiating portion 30, The feeding portion 110 and the lower ground portion 119 are both disposed on the same surface of the supporting portion 40, the ninth extension portion 32 of the third radiating portion 30 and the first section 112 are parallel to each other, and the The extension length of the nine extension portion 32 does not exceed the extension length of the first section 112, and the length of the eighth extension portion 31 is the same as the length of the lower portion 119.

When the multi-frequency antenna 100 of the present creation is used for wireless communication, the third radiating part 30 is coupled with the feeding point 111 and the frequency band oscillated is 4400MHZ-5000MHZ. In specific implementation, you can adjust the first The distance between the nine extension portion 32 and the first section 112 is used to change the bandwidth of the 4400MHZ-5000MHZ frequency band.

In this embodiment, the frequency band of the first radiating part 10 is 824MHZ-960MHZ, and the second harmonic frequency band that can be oscillated through the coupling between the main body part 11 and the first radiating extension part 13 is 1710MHZ-2170MHZ The main body 11 and the second radiating extension 14 are coupled to produce a frequency band of 2300MHZ-2690MHZ, the second radiating part 20 frequency band is 3300MHZ-3800MHZ, and the third radiating part 30 frequency band is 4400MHZ- 5000MHZ. This enables the multi-frequency antenna 100 of the present invention to increase the frequency band in a limited volume.

In this embodiment, the extension length of the first radiation portion 10 is greater than the extension length of the first radiation extension portion 13, and the extension length of the first radiation extension portion 13 is greater than the extension length of the second radiation extension portion 14, so The extension length of the second radiation portion 20 is greater than the extension length of the third radiation portion 30.

Please refer to the fifth figure, which is a voltage standing wave ratio (VSWR) test chart of the multi-band antenna 100 of this creative. When the creative multi-frequency antenna 100 operates at 824 MHz, the voltage standing wave ratio is 11.049 (M1 in the figure). When the creative multi-frequency antenna 100 operates at 960 MHz, the voltage standing wave ratio is 2.6300 (M2 in the figure). When the creative multi-frequency antenna 100 operates at 1710MHZ, the voltage standing wave ratio is 2.8514 (M3 in the figure). When the creative multi-frequency antenna 100 operates at 2170MHZ, the voltage standing wave ratio is 2.1903 (M4 in the figure). When the frequency antenna 100 operates at 2300MHZ, the voltage standing wave ratio is 1.9669 (M5 in the figure). When the original multi-frequency antenna 100 operates at 2690MHZ, the voltage standing wave ratio is 3.2846 (M6 in the picture). When 100 operates at 3300MHZ, the voltage standing wave ratio is 2.4420 (M7 in the picture). When the original multi-frequency antenna 100 operates at 3800MHZ, the voltage standing wave ratio is 2.7820 (M8 in the picture). When the original multi-frequency antenna 100 operates At 4400MHZ, the voltage standing wave ratio is 2.0552 (M9 in the figure). When the multi-frequency antenna 100 of the present invention operates at 5000MHZ, the voltage standing wave ratio is 2.1919 (M10 in the figure). Therefore, the multi-frequency antenna 100 of the present invention can stably operate in the frequency bands of 824-960MHZ, 1710-2170MHZ, 2300-2690MHZ, 3300-3800MHZ and 4400-5000MHZ.

In summary, the creative multi-frequency antenna 100 feeds electrical signals through the feed point 111. The frequency band of the first radiating part 10 is 824MHZ-960MHZ and is generated through the main body 11 and the first radiating extension 13 The second harmonic frequency band that can be oscillated by coupling is 1710MHZ-2170MHZ, the main body 11 and the second radiation extension 14 can be coupled to produce a frequency band of 2300MHZ-2690MHZ, and the second radiating part 20 frequency band is 3300MHZ -3800MHZ, the 30 frequency band of the third radiation part is 4400MHZ-5000MHZ. 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: Multi-frequency antenna 10: The first radiation department 11: Main body 110: Infeed 111: feed point 112: First section 113: Second section 114: Third section 115: fourth section 116: fifth section 117: The sixth section 118: seventh section 119: Lower Ground 12: Adjustment Department 121: Slotting 122: first slot segment 123: second slot segment 13: The first radiation extension 131: First connection part 132: first extension 133: second extension 134: Third Extension 135: Fourth Extension 14: Second radiating extension 141: The second connecting part 142: first oblique part 143: second slope 144: Fifth Extension 20: The second radiation department 21: The third connecting part 22: sixth extension 23: third oblique 24: seventh extension 30: Third Radiation Department 31: Eighth extension 32: Ninth Extension 40: Support 50: circuit board 51: Ground

[The first picture] is a three-dimensional view of the multi-frequency antenna of this creation. [The second picture] is another perspective view of the multi-frequency antenna of this creation. [The third picture] is a partial three-dimensional view of the multi-frequency antenna of this creation. [Fourth picture] is another perspective view of the multi-frequency antenna of this creation. [Fifth Picture] is the voltage standing wave ratio (VSWR) test chart of the multi-frequency antenna of this author. [Picture 6] is the Smith Chart of the multi-frequency antenna created by this book.

100: Multi-frequency antenna

10: The first radiation department

11: Main body

12: Adjustment Department

13: The first radiation extension

14: Second radiating extension

20: The second radiation department

30: Third Radiation Department

40: Support

50: circuit board

51: Ground

Claims (9)

A multi-frequency antenna, comprising: a circuit board provided with a ground; a supporting part arranged on one side of the circuit board; a first radiating part, the first radiating part surrounds the side and upper surface of the supporting part , Both ends of the first radiating portion are respectively provided with a feeding portion and a lower ground portion extending upwardly along the front side of the support portion, one end of the feeding portion is close to the ground and keeps a distance from the ground; One end of the lower ground portion is connected to the ground, and the lower ground portion is kept at a distance from the feeding portion; a second radiating portion is formed by the circuit board extending upward along the front side of the supporting portion and then bent and arranged at the On the upper surface of the supporting portion, the second radiating portion is arranged on one side of the feeding portion and between the feeding portion and the lower ground portion; and a third radiating portion is formed by extending from the circuit board , The third radiating part is arranged on the front side of the supporting part, the third radiating part is arranged on the other side of the feeding part, and the third radiating part, the feeding part and the lower ground part are all arranged On the same surface of the supporting portion; the extension length of the first radiation portion is greater than the extension length of the second radiation portion, and the extension length of the second radiation portion is greater than the extension length of the third radiation portion. The multi-frequency antenna according to claim 1, wherein the first radiating part is provided with a main body, an adjusting part, a first radiating extension, and a second radiating extension, and the main body surrounds the supporting part The top of the rear end of the main body portion extends to the upper surface of the support portion to form the adjustment portion, and the top of the left side of the main body portion extends upward along the left side of the support portion, and is bent The first radiating extension is formed on the upper surface of the supporting portion, and after the top of the left side of the main body extends upward along the left side of the supporting portion, it is bent and arranged on the upper surface of the supporting portion to form the first radiation extension. Two radiating extension parts, the first radiating extension part is disposed between the main body part and the second radiating extension part, and the second radiating extension part and the first radiating extension part are disposed on the same side. The multi-frequency antenna according to claim 2, wherein the main body portion includes the feeding portion extending upwardly along the front side of the supporting portion, the feeding portion is provided with a feeding point, and the feeding point is arranged On one side of the feeding portion, the feeding portion and the circuit board are perpendicular to each other, one end of the feeding portion is close to the ground and keeping a distance from the ground, and the other end is left along the upper surface of the support portion It extends to form a first section, one end of the first section extends downward along the left side of the support portion to form a second section, and one end of the second section extends backward along the left side of the support portion to form A third section, one end of the third section extends rightward along the rear side of the support portion to form a fourth section, and one end of the fourth section extends forward along the right side of the support portion to form a The fifth section, one end of the fifth section extends upward along the right side of the support portion to form a sixth section, and one end of the sixth section extends leftward along the upper surface of the support portion to form a first Seven sections, one end of the seventh section extends downward along the front side of the support portion to the circuit board to form the lower ground portion, the lower ground portion and the circuit board are perpendicular to each other, and one end of the lower ground portion In contact with the ground, the lower ground portion is kept at a distance from the feeding portion, and a slot is provided on the adjusting portion. The multi-band antenna according to claim 3, wherein the first section and the fourth section are parallel to each other, the seventh section and the fourth section are parallel to each other, and the first section The length is the same as the length of the seventh section, the second section and the sixth section are parallel to each other and have the same length, and the third section and the fifth section are parallel to each other and have the same length. The multi-band antenna according to claim 3, wherein the first radiating extension portion includes a first connection portion, a first extension portion, a second extension portion, a third extension portion, and a fourth extension portion, The top of the middle section of the third section extends upward along the left side of the support portion to form the first connecting portion, and one end of the first connecting portion extends toward the fifth section to form the first extension portion One end of the first extension portion is bent toward the fourth section and then extends to form the second extension portion, and one end of the second extension portion is bent toward the fifth section and then extends to form the A third extension part, the third extension part is bent in the direction of the first section and then extends to form the fourth extension part, the first extension part, the second extension part, and the third extension The portion and the fourth extension portion are disposed on the upper surface of the support portion. The multi-band antenna according to claim 3, wherein the second radiating extension portion includes a second connecting portion, a first inclined portion, a second inclined portion, and a fifth extension portion. The top of the rear section of the third section extends upward along the left side of the support section to form the second connecting portion, and one end of the second connecting section extends obliquely toward the first section to form the first inclined portion One end of the first inclined portion is bent toward the fourth section and then obliquely extends toward the fourth section to form the second inclined portion, and one end of the second inclined portion extends beyond the rear side of the support portion Edge, one end of the second oblique portion extends toward the fifth section to form the fifth extension portion, and the fifth extension portion is correspondingly above the fourth section and adjacent to the upper surface of the support portion, The first inclined portion, the second inclined portion, and the fifth extension portion are disposed on the upper surface of the supporting portion. The multi-frequency antenna according to claim 3, wherein the second radiating portion includes a third connecting portion, a sixth extending portion, a third inclined portion and a seventh extending portion, and the third connecting portion is provided Between the feeding portion and the lower ground portion, one end of the third connecting portion extends toward the fourth section to form the sixth extension portion, and one end of the sixth extension portion extends toward the fifth section Obliquely extending to form the third oblique portion, one end of the third oblique portion extends toward the fourth section to form the seventh extending portion, the sixth extending portion, the third oblique portion, and the The seventh extension part is disposed on the upper surface of the support part. The multi-frequency antenna according to claim 7, wherein the third connecting portion and the feeding portion are parallel to each other, the third connecting portion and the lower base portion are the same length and parallel to each other, and the sixth extension portion is parallel to each other. The seventh extension parts are parallel to each other and have the same length. The multi-band antenna according to claim 3, wherein the third radiating portion extends upward from one side of the circuit board to form an eighth extension, and the end of the eighth extension faces the direction of the second section A ninth extension portion is formed by bending and extending laterally. The ninth extension portion and the first section are parallel to each other, and the extension length of the ninth extension portion does not exceed the extension length of the first section. The length of the eighth extension part is the same as the length of the bottom part.

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