TWM507587U - Multi-band antenna structure - Google Patents

Description

Multi-frequency antenna structure 【0001】

This creation relates to an antenna, especially a multi-frequency antenna structure suitable for use in different frequency bands.

【0002】

In recent years, the rapid development of wireless communication technology, Long Term Evolution (LTE) communication technology has emerged as the LTE LTE700/2300/2500 frequency band covers 704-960MHz and 1710-2690MHz, covering Wireless Wide Area Network (WWAN), a five-band operation, compared to the traditional wireless local area network (Wireless Local Area Network, usually referred to as WLAN) 2.4G, 5G antenna, LTE antenna covers lower frequency And a larger bandwidth; therefore, how to balance the antenna multi-frequency operation and receiving quality for antenna design needs to pay attention to.

[0003]

However, in the conventional multi-frequency antenna, a plurality of antennas are stamped and formed by a metal foil, and then bent into an antenna, and a plurality of bent antennas are electrically connected to a single circuit substrate. The multi-arm antenna forms a multi-band antenna structure arranged in a double-polarized array, or the pattern of the antenna is printed on a copper film of the circuit substrate by using a printing technique, and then the pattern of the antenna is formed by a technique such as development exposure or etching. The plurality of circuit boards having the antenna pattern are stacked into a multi-band antenna structure having a dual-polarized array arrangement, so that the multi-band antenna structure can be used in different frequency bands when transmitting and receiving signals.

[0004]

Since the former and the latter use multiple antennas to form a multi-band antenna structure, not only will the multi-band antenna structure be larger in size and size, but also the manufacturing cost will increase, and when the multi-band antenna structure is installed, The signal feeding points of multiple antennas are not in the same plane or at the same position, which may cause troubles in production and installation.

[0005]

Therefore, the main purpose of this creation is to solve the traditional lack and avoid the existence of the missing. This creation redesigns the multi-frequency antenna structure into a planar state, so that the first antenna (horizontal polarization antenna) and the second antenna (vertical pole) The signal feeding contacts of the antennas are on the same plane or at the same position, so that the size and size of the multi-frequency antenna structure are reduced, which is easier to manufacture and the manufacturing cost is relatively reduced.

[0006]

For the above purposes, the present invention provides a multi-frequency antenna structure comprising: a carrier, a first antenna, a second antenna, a ground plane and a bridging element. The substrate has a front side and a back side. The first antenna is disposed on a front surface of the substrate, and has a first metal line thereon. The first metal wire has a first signal feeding contact, and the first metal wire is electrically connected with two symmetrical numbers. The first high frequency radiating surface and the second symmetrical first low frequency radiating surface are electrically coupled to the first high frequency radiating surface and the first low frequency radiating surface. The second antenna is interleaved with the first antenna on the front surface of the substrate, and has two second metal wires thereon, and a second metal wire has a second signal feeding contact and an electrical property. The other second metal wire has another electrical jumper, and the second metal wire is electrically connected to the second symmetrical radiating surface and the second symmetrical radiating surface. A second filter is electrically coupled between the second high frequency radiating surface and the second low frequency radiating surface. The grounding surface is disposed on the back surface of the substrate, and has a pair of central blocks corresponding to the first signal feeding contact, the second signal feeding contact, and the second electrical bridging point, where the central block is Each of the wires is electrically connected to a first block, a second block and a third block. The bridging element is fixed to the central block and electrically connected to the second metal line. When the signal is received, when the signal flows through the first metal line or the second metal line is one-half wavelength length, the first antenna and the second antenna are dual-polarized array antenna structures. The gain of the antenna is multiplied to form a multi-frequency antenna structure.

【0007】

In an embodiment of the present invention, the first metal wire further has a rectangular first bending line, and the second metal wire has a rectangular second bending line.

[0008]

In an embodiment of the present invention, the first signal feeding contact has a first through hole penetrating the substrate, and the second signal feeding contact has a second through hole penetrating the substrate.

【0009】

In an embodiment of the present invention, the shape of the first high-frequency radiating surface is a square block, and the square block has a truncated edge, and the truncated edge is electrically connected to the first metal line; The second high-frequency radiating surface has a square block shape, and the square block has a truncated edge, and the truncated side is electrically connected to the two first metal wires.

[0010]

In an embodiment of the present invention, the first low frequency radiating surface is an L-shaped line segment and electrically connected to the first metal line; and the second low frequency radiating surface is an L-shaped line segment, and the first The metal wires are electrically connected.

[0011]

In an embodiment of the present invention, the first filter has a shape-shaped thin wire electrically connected to the first metal wire, and an L-shaped thin wire extends outwardly from opposite ends of the in-line thin line; An in-line thin wire is electrically connected to the second metal wire, and an L-shaped thin wire extends outwardly from opposite ends of the in-line thin wire.

[0012]

In one embodiment of the present invention, the line widths of the first metal line and the second metal line are different to adjust the impedance matching of the array antenna system.

[0013]

In one embodiment of the present invention, the two electrical jumper points have two assembly holes extending through the substrate.

[0014]

In an embodiment of the present invention, the substrate further includes a plurality of fixing holes and a through hole.

[0015]

In an embodiment of the present invention, the central block of the grounding surface further includes a first bending line, a second bending line fixing hole and the through hole.

[0016]

In one embodiment of the present invention, the first blocks are square, and have a truncated edge, the truncated edge is electrically connected to the wires, and the first high frequency radiating surface and the The second high frequency radiating surface is disposed on the back surface of the substrate.

[0017]

In an embodiment of the present invention, the second blocks are square, and the filters corresponding to the front surface of the substrate are electrically connected to the wires.

[0018]

In an embodiment of the present invention, the third block is an L-shaped line segment, and is disposed on the back surface of the substrate opposite to the first low-frequency radiation and the second low-frequency radiation and the electrical properties of the wires link.

[0019]

In one embodiment of the present invention, the bridging element has a carrier board having a radio frequency path, and each end of the radio frequency path has a through hole, and the through hole is electrically connected to the conductive pin or The conductive tin is filled in, and the conductive pin or the conductive tin is electrically connected to the two second metal wires in the two electrical jumper.

[0020]

In one embodiment of the present invention, the substrate and the carrier are glass fiber sheets.

[0041]

1‧‧‧Substrate

[0042]

11‧‧‧ positive

[0043]

12‧‧‧ Back

[0044]

13‧‧‧Fixed holes

[0045]

14‧‧‧through hole

[0046]

2‧‧‧first antenna

[0047]

21‧‧‧First metal wire

[0048]

22‧‧‧First signal feed point

[0049]

221‧‧‧ first perforation

[0050]

23‧‧‧First bend line

[0051]

24‧‧‧First high frequency radiation surface

[0052]

241‧‧‧ square block

[0053]

242‧‧‧Tangle

[0054]

25‧‧‧First low frequency radiation surface

[0055]

251‧‧‧L-shaped line segments

[0056]

26‧‧‧First filter

[0057]

261‧‧‧a thin line

[0058]

262‧‧‧L-shaped thin line

[0059]

3‧‧‧second antenna

[0060]

31, 31’‧‧‧second metal wire

[0061]

32‧‧‧Second signal feed contact

[0062]

321‧‧‧Second perforation

[0063]

322‧‧‧second bend line

[0064]

33‧‧‧Electrical bridging point

[0065]

33’‧‧‧Electrical bridging point

[0066]

331, 331' ‧ ‧ set of holes

[0067]

34‧‧‧Second high frequency radiation surface

[0068]

341‧‧‧ square block

[0069]

342‧‧‧Tangle

[0070]

35‧‧‧Second low frequency radiation surface

[0071]

351‧‧‧L-shaped line segments

[0072]

36‧‧‧Second filter

[0073]

361‧‧‧a thin line

[0074]

362‧‧‧L-shaped thin line

[0075]

4‧‧‧ Ground plane

[0076]

41‧‧‧Central Block

[0077]

42‧‧‧Wire

[0078]

43‧‧‧First block

[0079]

431‧‧‧Tangle

[0080]

44‧‧‧Second block

[0081]

45‧‧‧ third block

[0082]

5‧‧‧crossing components

[0083]

51‧‧‧ Carrier Board

[0084]

52‧‧‧RF path

[0085]

53‧‧‧through hole

[0086]

6‧‧‧First cable

[0087]

61‧‧‧Flexible wire

[0088]

7‧‧‧Second cable

[0089]

71‧‧‧Flexible wire

[0090]

8‧‧‧shell

[0091]

81‧‧‧Base

[0092]

82‧‧‧Fixed column

[0093]

83‧‧‧Locking components

[0021]

Figure 1a is a front elevational view of the multi-frequency antenna structure of the present invention.

[0022]

Figure 1b is a partial enlarged view of Figure 1a.

[0023]

Figure 2 is a schematic view of the back of the multi-frequency antenna structure of the present invention.

[0024]

Figure 3 is a schematic diagram of the structure of the carrier board of the present invention.

[0025]

FIG. 4 is a schematic rear view of the electrically connected signal cable of the multi-frequency antenna structure of the present invention.

[0026]

FIG. 5 is an exploded perspective view showing the assembly of the multi-frequency antenna structure and the housing of the present invention.

[0027]

FIG. 6 is a schematic diagram of the combination of the multi-frequency antenna structure and the housing assembly of the present invention.

[0028]

The technical content and detailed description of this creation are now described as follows:

[0029]

Please refer to FIG. 1a, FIG. 1b and FIG. 2 to FIG. 3, which are schematic diagrams of the front side of the multi-frequency antenna structure of the present invention and the partial enlargement of the multi-frequency antenna structure and the structure of the carrier board of FIG. 1a. As shown in the figure, the multi-frequency antenna structure of the present invention comprises: a carrier board 1, a first antenna 2, a second antenna 3, a ground plane 4 and a bridging element 5.

[0030]

The substrate 1 has a front surface 11 and a back surface 12, and has a plurality of fixing holes 13 and a through hole 14 extending through the substrate 1. In the present drawing, the carrier 1 is a fiberglass board.

[0031]

The first antenna 2 is disposed on the front surface 11 of the substrate 1 and has a first metal wire 21 thereon. The first metal wire 21 has a first signal feeding contact 22 and a rectangular shape. a first bend-in line 23, the first signal feed-in contact 22 has a first through hole 221 extending through the substrate 1, and the first through hole 221 is used for signal feeding cable (not shown) to pass through the first hole 221 A signal feeding contact 22 is electrically connected, and the first metal wire 21 is electrically connected to the first symmetrical first high frequency radiating surface 24 and the second symmetrical first low frequency radiating surface 25 at the first high A first filter 26 is electrically coupled between the frequency radiating surface 24 and the first low frequency radiating surface 25, and the first filter 26 is formed between the first high frequency radiating surface 24 and the first low frequency radiating surface 25. Isolation of components to avoid high frequency signals directly affecting low frequency signals. The shape of the first high-frequency radiating surface 24 is a square block 241, and a truncated side 242 is formed on the square block 241, and the truncated side 242 is electrically connected to the first metal line 21. The first low frequency radiating surface 25 is an L-shaped line segment 251 and is electrically connected to the first metal line 21 . The first filter 26 has a flat-shaped thin wire 261 electrically connected to the first metal wire 21, and an L-shaped thin wire 262 extends outwardly from opposite ends of the in-line thin wire 261. In the figure, the first antenna 2 is defined as a horizontally polarized antenna or a vertically polarized antenna according to a placement position or direction; and the first metal line 21 has different line widths and thicknesses, thereby adjusting the impedance of the array antenna system. match.

[0032]

The second antenna 3 is interleaved with the first antenna 2 on the front surface 11 of the substrate 1. There are two second metal wires 31, 31'. The second metal wire 31 has a second signal feeding contact 32 and a rectangular second bending line 322. The second signal is fed into the contact 32. The second through hole 321 is inserted through the substrate 1 and is electrically connected to the second signal feeding contact 32 through a signal feeding cable (not shown). In addition, the second metal line 31 has an electrical jumper 33, and the other second metal line 31' has another electrical jumper 33'. The second electrical jumper 33, 33' has Two sets of connecting holes 331, 331' penetrating the substrate 1, the two sets of connecting holes 331, 331' electrically connecting the bridging element 5, and the two second metal wires 31 separated by the first antenna 2 31' can be electrically connected together to form a single strip of second metal wire. The second metal wire 31, 31' is electrically connected to the second symmetrical radiating surface 34 and the second symmetrical radiating surface 35, and the second radiating surface 34 and the second radiating surface 34 A second filter 36 is electrically coupled between the low frequency radiating surfaces 35, and the second filter 36 forms an isolation element between the second high frequency radiating surface 34 and the second low frequency radiating surface 35 to avoid high frequency. The signal affects the low frequency signal. The shape of the second high-frequency radiation surface 34 is a square block 341, and a truncated edge 342 is formed on the square block 341, and the truncated edge 342 and the second metal line 31, 31' Electrical connection. The second low frequency radiating surface 35 is an L-shaped line segment 351 and is electrically connected to the second metal wires 31, 31'. The second filter 36 has an in-line thin wire 361 electrically connected to the second metal wire 31, 31'. An L-shaped thin wire 362 extends outwardly from opposite ends of the in-line thin wire 361. In the figure, the second antenna 3 is defined as a horizontally polarized antenna or a vertically polarized antenna according to a placement position or direction; and the second metal wires 31, 31' have different line widths, thereby adjusting the array antenna. The impedance of the system matches.

[0033]

The grounding surface 4 is disposed on the back surface 12 of the substrate 1 and has a pair of first signal feeding contacts 22, a first bending line 23, a second signal feeding contact 32, and a second bending line. 32. The two sets of the through holes 331 and the fixing holes 13 and the central block 41 of the through hole 14 respectively extend on each side of the central block 41 with a pair of first metal wires 21 corresponding to the front surface of the substrate 1 and the first The wires 42 of the two wires 31 are electrically connected to a first block 43, a second block 44 and a third block 45. The first block 43 is square, and has a truncated edge 431 electrically connected to the wire 42 and to the first high frequency radiating surface 24 and the second high frequency radiation. The face 34 is oriented on the back side of the substrate. The second blocks 44 are square, and the filters 26 and 36 corresponding to the front surface 11 of the substrate 1 are electrically connected to the wires 42. The third block 45 is an L-shaped line segment and is electrically connected to the wires 42 on the back surface 12 of the substrate opposite to the first low-frequency radiation 25 and the second low-frequency radiation 35.

[0034]

The bridging element 5 has a carrier plate 51. The carrier board 51 has an RF path 52. The RF path 52 has a through hole 53 at each end thereof. The conductive pin or the conductive tin can be electrically connected to the central block 41. The two conductive pins or conductive tin pass through the two sets of holes 331, 331'. And not electrically connected to the central block, and only electrically connected to the second metal line 31. In the present drawing, the carrier 51 is a fiberglass board.

[0035]

By adopting the multi-frequency antenna structure design, the signal feeding points of the horizontally polarized antenna and the vertically polarized antenna are in the same plane or the same position, so that the size and size of the multi-frequency antenna structure are reduced, and the manufacturing is further improved. It is easy and the production cost is relatively low.

[0036]

Please refer to FIG. 4 , which is a schematic diagram of the back side of the electrically connected signal cable of the multi-frequency antenna structure of the present invention. As shown in the figure: in the present invention, the multi-frequency antenna structure is electrically connected to the signal cable, and the first cable 6 and the second cable 7 are first passed through the through hole 14, and the first cable 6 is The grounding wire (not shown) is electrically connected to the central block 41. The conductive wire 61 of the first cable 6 is electrically connected to the first signal feeding contact 22 through the first through hole 221 . The grounding line (not shown) of the second cable 7 is also electrically connected to the central block 41. The conductive line 71 of the second cable 7 also passes through the second through hole 321 and the second signal feed. The input point 32 is electrically connected.

[0037]

When the signal is transmitted and received, when the signal flows through the first metal line 21 or the second metal line 31, 31' is a length of one-half wavelength, the first antenna 1 and the second antenna 2 form a double The polarized array antenna structure doubles the gain of the antenna, allowing the antenna to receive signals in different frequency bands.

[0038]

After the multi-frequency antenna structure is fixed and installed, the first antenna 2 or the second antenna 3 may be defined as a horizontally polarized antenna or a vertically polarized antenna according to the installation position or direction.

[0039]

Please refer to FIG. 5 and FIG. 6 , which are schematic diagrams of the decomposition and combination of the multi-frequency antenna structure and the housing assembly of the present invention. As shown in the figure, after the first cable 6 and the second cable 7 of the multi-frequency antenna structure of the present invention are electrically connected, the multi-frequency antenna structure is assembled with the housing 8 and The fixing holes 13 on the base plate 1 correspond to the fixing posts 82 on the base 81 of the housing 8 , and the locking member 83 is locked with the fixing posts 82 through the fixing holes 13 . The frequency antenna structure is fixed to the base 81. After the multi-frequency antenna structure is mounted on the base 81, an upper cover 84 is assembled on the base 81, and the multi-frequency antenna structure is sealed by the upper cover 84 to form a dual-polarized antenna that can receive multiple frequencies.

[0040]

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, the equal changes and modifications made by the patent application scope of this creation are covered by the scope of the creation patent.

1‧‧‧Substrate

11‧‧‧ positive

13‧‧‧Fixed holes

14‧‧‧through hole

2‧‧‧first antenna

21‧‧‧First metal wire

22‧‧‧First signal feed point

221‧‧‧ first perforation

23‧‧‧First bend line

24‧‧‧First high frequency radiation surface

241‧‧‧ square block

242‧‧‧Tangle

25‧‧‧First low frequency radiation surface

251‧‧‧L-shaped line segments

26‧‧‧First filter

261‧‧‧a thin line

262‧‧‧L-shaped thin line

3‧‧‧second antenna

31, 31’‧‧‧second metal wire

32‧‧‧Second signal feed contact

321‧‧‧Second perforation

322‧‧‧second bend line

33‧‧‧Electrical bridging point

33’‧‧‧Electrical bridging point

331, 331' ‧ ‧ set of holes

34‧‧‧Second high frequency radiation surface

341‧‧‧ square block

342‧‧‧Tangle

35‧‧‧Second low frequency radiation surface

351‧‧‧L-shaped line segments

36‧‧‧Second filter

361‧‧‧a thin line

362‧‧‧L-shaped thin line

Claims (15)

[Item 1] A multi-frequency antenna structure comprising:
a substrate having a front surface and a back surface;
a first antenna is disposed on a front surface of the substrate, and has a first metal line thereon, the first metal wire has a first signal feeding contact, and the first metal wire is electrically connected with two phases a first symmetrical first high frequency radiating surface and two symmetrical first low frequency radiating surfaces, and a first filter electrically coupled between the first high frequency radiating surface and the first low frequency radiating surface;
a second antenna is interposed on the front surface of the substrate and has two second metal lines thereon, and a second metal line has a second signal feeding contact An electrical jumper, the other second metal wire has another electrical jumper, and the second metal wire is electrically coupled to the second symmetrical second high frequency radiating surface and the second symmetrical second low frequency a radiating surface, electrically coupled to the second high frequency radiating surface and the second low frequency radiating surface;
a grounding surface is disposed on the back surface of the substrate, and has a pair of central blocks corresponding to the first signal feeding contact, the second signal feeding contact, and the two electrical bridging points, in the central area Each of the sides of the block has a pair of first metal wires and a wire of the second metal wires, and the wires are electrically connected to a first block, a second block and a third block. ;
a bridging element is fixed to the central block and electrically connected to the second metal wire;
The first antenna and the second antenna become a dual-polarized array antenna structure when the signal flows through the first metal line or the second metal line has a length of one-half wavelength. The gain of the antenna is multiplied to form a multi-frequency antenna structure. [Item 2] The multi-frequency antenna structure of claim 1, wherein the first metal wire further has a rectangular first bending line, and the second metal wire has a rectangular second bending line. . [Item 3] The multi-frequency antenna structure of claim 2, wherein the first signal feeding contact has a first through hole penetrating the substrate, and the second signal feeding contact has a through hole a second perforation of the substrate. [Item 4] The multi-frequency antenna structure of claim 1, wherein the first high-frequency radiating surface has a square block shape, and the square block has a truncated side, the truncated side and the first A metal wire is electrically connected; the second high-frequency radiation surface is in the shape of a square block having a truncated edge, and the truncated edge is electrically connected to the two first metal wires. [Item 5] The multi-frequency antenna structure of claim 4, wherein the first low-frequency radiating surface is an L-shaped line segment and electrically connected to the first metal line; and the second low-frequency radiating surface is L The line segment is electrically connected to the two first metal wires. [Item 6] The multi-frequency antenna structure of claim 5, wherein the first filter has a shape-shaped thin wire electrically connected to the first metal wire, and an L-shaped thin wire extends outwardly from opposite ends of the in-line thin wire. In addition, the second filter has an in-line thin wire electrically connected to the second metal wire, and an L-shaped thin wire extends outwardly from opposite ends of the in-line thin wire. [Item 7] The multi-frequency antenna structure of claim 1, wherein the first metal line and the second metal line have different line widths to adjust the impedance matching of the array antenna system. [Item 8] The multi-frequency antenna structure of claim 1, wherein the two electrical jumper has two through holes extending through the substrate. [Item 9] The multi-frequency antenna structure of claim 1, wherein the substrate further comprises a plurality of fixing holes and a through hole. [Item 10] The multi-frequency antenna structure of claim 1, wherein the central block of the ground plane further comprises a first bending line, a second bending line fixing hole and the through hole. [Item 11] The multi-frequency antenna structure of claim 1, wherein the first block is square, and has a truncated edge, the truncated edge is electrically connected to the wires, and The first high frequency radiating surface and the second high frequency radiating surfaces are disposed on the back surface of the substrate. [Item 12] The multi-frequency antenna structure of claim 11, wherein the second blocks are square, and the filters corresponding to the front surface of the substrate are electrically connected to the wires. [Item 13] The multi-frequency antenna structure of claim 12, wherein the third block is an L-shaped line segment, and is disposed on the substrate opposite to the first low-frequency radiation and the second low-frequency radiation. The wires are electrically connected to the back surface. [Item 14] The multi-frequency antenna structure of claim 13, wherein the bridging element has a carrier board, the carrier board has a radio frequency path, and each end of the radio frequency path has a through hole. The conductive pins are electrically connected to the holes or filled with conductive tin, and the conductive pins or the conductive tin are electrically connected to the second metal wires in the two electrical jumpers. [Item 15] The multi-frequency antenna structure of claim 14, wherein the substrate and the carrier are glass fiber sheets.