Dual-frequency antenna device

Abstract

The utility model provides a dual-frequency antenna device which comprises a substrate, a plurality of groups of radiation units, a first transmission unit and a second transmission unit. The radiation units are arranged on the substrate, and each radiation unit comprises two radiation components. And the first transmission unit is arranged on the substrate and is provided with first ends connected to the two first radiation components of the two radiation units in the radiation units, second ends connected to the two first radiation components of the other two radiation units in the radiation units, and a signal feed-in node. And the second transmission unit is arranged on the substrate and is provided with a first end connected to the two second radiation components of the two radiation units, a second end connected to the two second radiation components of the other two radiation units and a grounding node.

Description

Technical Field

[0001] The utility model relates to an antenna device, in particular to a dual-frequency antenna device. Background Art

[0002] The dipole antenna is a common type of antenna used to transmit and receive electromagnetic waves. It is a basic antenna structure consisting of two conductors of equal length, which are parallel and symmetrically arranged, and separated in the middle to form a V-shaped or straight structure. These two conductors are called dipoles, one of which is connected to the high voltage end and the other to the low voltage end. When the dipole antenna is connected to the source of frequency modulation, it will generate an electromagnetic field and transmit wireless signals to the surroundings. Similarly, when it receives a wireless signal from space, the dipole antenna will convert the received energy into an electrical signal.

[0003] Dipole antennas have broadband characteristics and can operate effectively in multiple frequency bands. They also have good radiation efficiency and radiation pattern, can have higher gain in a specific direction, and have a simple structure and are easy to manufacture and install. However, ordinary dipole antennas can only meet the characteristic requirements within a single frequency range, making them unable to adapt to the needs of a wider range of applications and communication standards. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a dual-frequency antenna device.

[0005] A dual-frequency antenna device disclosed in an embodiment of the utility model comprises a substrate, a plurality of radiation units, a first transmission unit and a second transmission unit. The plurality of radiation units are arranged on the substrate, each comprising two radiation components. The first transmission unit is arranged on the substrate, and has a first end of two first radiation components connected to two radiation units among the radiation units, a second end of two first radiation components connected to the other two radiation units among the radiation units, and a signal feeding node. The second transmission unit is arranged on the substrate, and has a first end of two second radiation components connected to the two radiation units, a second end of two second radiation components connected to the other two radiation units, and a grounding node.

[0006] Through the above structure, the dual-frequency antenna device disclosed in this case can use multiple groups of dipole antennas to meet parameter requirements in multiple frequency ranges.

[0007] The above description of the content of the utility model and the following description of the implementation mode are used to demonstrate and explain the principle of the utility model, and provide further explanation of the claims of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 FIG. 4 is a top view of a dual-band antenna device according to an embodiment of the present invention.

[0009] Figure 2 and Figure 3 The figure is a schematic diagram of the size design of a dual-band antenna device according to an embodiment of the present invention.

[0010] Figure 4 FIG. 4 is a characteristic diagram of the Voltage Standing Wave Ratio (VSWR) of a dual-band antenna device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0011] The detailed features and advantages of the present invention are described in detail in the following embodiments, and the contents are sufficient to enable any person skilled in the art to understand the technical content of the present invention and implement it accordingly. According to the contents disclosed in this specification, the claims and the drawings, any person skilled in the art can easily understand the relevant purposes and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any way.

[0012] Please refer to Figure 1 , Figure 1 FIG. 1 is a top view of a dual-frequency antenna device according to an embodiment of the present invention. Figure 1 As shown, the dual-band antenna device 1 includes a substrate 11, a plurality of radiation units 12-15, a first transmission unit 16, a second transmission unit 17, a signal feeding component 18 and a grounding component 19, wherein the signal feeding component 18 and the grounding component 19 can be selectively arranged components. The plurality of radiation units 12-15, the first transmission unit 16, the second transmission unit 17, the signal feeding component 18 and the grounding component 19 are all arranged on the substrate 11, and each can be made of a conductive material such as metal.

[0013] The substrate 11 is used to support and fix the components disposed thereon and to provide electrical connection and structural support between the components.

[0014] Each of the plurality of radiation units 12 to 15 includes two radiation components. Specifically, the radiation unit 12 includes two line-symmetrical first radiation components 121 and second radiation components 122, the radiation unit 13 includes two line-symmetrical first radiation components 131 and second radiation components 132, the radiation unit 14 includes two line-symmetrical first radiation components 141 and second radiation components 142, and the radiation unit 15 includes two line-symmetrical first radiation components 151 and second radiation components 152.

[0015] Each group of the radiation units 12 to 15 can be regarded as a group of dipole antennas, and the lengths of the first radiation component 121 and the second radiation component 122 of the radiation unit 12 can be different from the lengths of the first radiation component 131 and the second radiation component 132 of the radiation unit 13 to provide radiation signals of different frequencies, thereby achieving a dual-frequency effect and realizing two different working frequency bands. Specifically, the lengths of the first radiation component 121 and the second radiation component 122 of the radiation unit 12 can be longer than the lengths of the first radiation component 131 and the second radiation component 132 of the radiation unit 13 to provide a lower frequency radiation signal as a first frequency radiation component, and conversely, the first radiation component 131 and the second radiation component 132 of the radiation unit 13 can provide a higher frequency radiation signal as a second frequency radiation component.

[0016] The radiation unit 14 and the radiation unit 12 may be linearly symmetrical structures, while the radiation unit 15 and the radiation unit 13 may be linearly symmetrical structures. Specifically, the two radiation components of each of the radiation units 12 to 15 may be parallel to the line of the direction D2 as the symmetry axis, the radiation unit 14 and the radiation unit 12 may be parallel to the line of the direction D1 as the symmetry axis, and the radiation unit 15 and the radiation unit 13 may be parallel to the line of the direction D1 as the symmetry axis. The direction D1 and the direction D2 are particularly perpendicular to each other. That is, the first radiation component 121, the second radiation component 122, the first radiation component 141 and the second radiation component 142 may each be used as a first frequency radiation component, and the first radiation component 131, the second radiation component 132, the first radiation component 151 and the second radiation component 152 may each be used as a second frequency radiation component. The first radiation component 131, the second radiation component 132, the first radiation component 151 and the second radiation component 152 may include a chamfered structure.

[0017] In this embodiment, the first transmission units 16 of the first radiation elements 121, 131, 141 and 151 may extend along the first direction D1, and the second transmission units 17 of the second radiation elements 122, 132, 142 and 152 may extend along the second direction, wherein the first direction D1 may be opposite to the second direction.

[0018] In this embodiment, the first radiation component 121 as a first frequency radiation component may include a first portion 1211 and a second portion 1212, wherein the width of the first portion 1211 may be greater than the width of the second portion 1212. The first portion 1211 of the first radiation component 121 and the first radiation component 131 as a second frequency radiation component may be arranged along a first direction D1, and the second portion 1212 of the first radiation component 121 and the first radiation component 131 as a second frequency radiation component may be arranged along a second direction D2 intersecting the first direction. In particular, the first direction D1 and the second direction D2 are perpendicular to each other.

[0019] It should be noted that Figure 1 The first portion 1211 and the second portion 1212 of the first radiation member 121 of the radiation unit 12 are only exemplarily indicated. Figure 1 As shown, the second radiation component 122 of the radiation unit 12, the first radiation component 141 of the radiation unit 14, and the second radiation component 142 of the radiation unit 14 also each include a first portion and a second portion. Further, the first portion of the first radiation component 141 and the first radiation component 151 as the second frequency radiation component can be arranged along the first direction D1, and the second portion of the first radiation component 141 and the first radiation component 151 as the second frequency radiation component can be arranged in the opposite direction of the second direction D2.

[0020] Furthermore, the arrangement of the first and second portions of the second radiation member 122 and the second radiation member 132 may be symmetrical along an axis parallel to the direction D2 to the arrangement of the first and second portions 1211 and 1212 of the first radiation member 121 and the first radiation member 131. The arrangement of the first and second portions of the second radiation member 142 and the second radiation member 152 may be symmetrical along an axis parallel to the direction D2 to the arrangement of the first and second portions of the first radiation member 141 and the first radiation member 151.

[0021] The first transmission unit 16 is used for signal transmission between the first radiation components 121, 131, 141 and 151 on the substrate 11. Specifically, the first transmission unit 16 has a first end 161 connected to the two first radiation components 121 and 131 of the two radiation components 12 and 13 of the radiation components 12 to 15, a second end 162 connected to the two first radiation components 141 and 151 of the other two radiation components 14 and 15 of the radiation components 12 to 15, and a signal feeding node 163. Further, the first transmission unit 16 is also used to provide interfaces for other components. For example, the signal feeding node 163 of the first transmission unit 16 can provide an interface for connecting a signal feeding conductor through the signal feeding component 18, or can directly provide an interface for connecting a signal feeding conductor.

[0022] The second transmission unit 17 is used for signal transmission between the second radiation components 122, 132, 142 and 152 on the substrate. Specifically, the second transmission unit 17 has a first end 171 connected to the two second radiation components 122 and 132 of the two radiation components 12 and 13, a second end 172 connected to the two second radiation components 142 and 152 of the other two radiation components 14 and 15, and a grounding node 173. Further, the second transmission unit 17 is also used to provide interfaces for other components. For example, the grounding node 173 of the second transmission unit 17 can provide an interface for a grounding conductor through a grounding component 19, or can directly provide an interface for connecting a grounding conductor.

[0023] In this embodiment, the radiation units 12 - 15 , the first transmission unit 16 and the second transmission unit 17 may all be disposed on the same surface 111 of the substrate 11 .

[0024] In another embodiment, Figure 1 The dual-frequency antenna device 1 shown may include a coaxial cable, which includes a signal feeding conductor and a grounding conductor. Specifically, the signal feeding conductor is connected to the signal feeding node 163 of the first transmission unit 16 , and the grounding conductor is connected to the grounding node 173 of the second transmission unit 17 .

[0025] The following is an exemplary description of the size design of the dual-frequency antenna device 1. Please refer to Figures 1 to 3 ,in Figure 2 and Figure 3 FIG. 1 is a schematic diagram of the size design of a dual-frequency antenna device according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the width W1 of the first portion 1211 of the first radiation member 121 can be designed to be 3.7 mm, and the length L1 of the first portion 1211 can be designed to be 10.1 mm. The first radiation member 131 can include two relatively long sides, wherein the length L2 of the shorter one can be designed to be 6.9 mm, and the length L3 of the longer one can be designed to be 8.4 mm. The width W3 between the two long sides farther away from the first portion 1211 of the first radiation member 121 and the first portion 1411 of the first radiation member 141 can be designed to be 11.8 mm. The width W2 of the line connecting the two most adjacent chamfered end points of the chamfered structure of the first radiation members 131 and 151 can be designed to be 8.8 mm.

[0026] like Figure 3As shown, the side 1311 of the first radiation member 131 away from the first radiation member 121 and close to the outer edge of the overall structure has a chamfered structure, wherein the chamfered structure includes two intervals G1 and G2, the width of the wider interval G1 of the two intervals can be designed to be 4 mm, and the width of the narrower interval G2 of the two intervals can be designed to be 1 mm, and the second radiation member 132, the first radiation member 151 and the second radiation member 152, respectively, away from the second radiation member 122, the first radiation member 141 and the second radiation member 142, all have a chamfered structure, wherein the chamfered structure includes two intervals, and the width of the two intervals can be the same as the width of the two intervals included in the chamfered structure of the first radiation member 131. There is a gap G3 between the first portion 1211 and the first radiation member 131, and the width of the gap G3 can be designed to be 1.5 mm. Figure 1 The spacing width between the first portion of the second radiation member 122 and the second radiation member 132, the spacing width between the first portion of the first radiation member 141 and the first radiation member 151, and the spacing width between the first portion of the second radiation member 142 and the second radiation member 152 can all be the same as Figure 3 The intervals G3 shown have the same width. A interval G4 is provided between the second portion 1212 and the first radiation member 131 , and the width of the interval G4 can be designed to be 0.6 mm. Figure 1 The spacing width between the second portion of the second radiation member 122 and the second radiation member 132, the spacing width between the second portion of the first radiation member 141 and the first radiation member 151, and the spacing width between the second portion of the second radiation member 142 and the second radiation member 152 may all be the same as Figure 3 The width of the interval G4 shown. The width W4 of the signal feeding member 18 can be designed to be 0.5 mm, and the length L4 can be designed to be 0.5 mm. The width W5 of the grounding member 19 can be designed to be 2.0 mm, and the length L5 can be designed to be 1 mm. The width of the interval G5 between the two most adjacent sides of the first radiation member 121 and the first radiation member 141 can be designed to be 4.4 mm. The width of the interval between the two most adjacent sides of the second radiation member 122 and the second radiation member 142 is the same as the width of the interval G5.

[0027] Please refer to Figure 4 , Figure 4 The dual-frequency antenna device 1 implemented by using the antennas of different lengths is tested, for example, using a network analyzer, and the voltage standing wave ratio characteristic diagram is obtained. Figure 4 It can be seen that the voltage standing wave ratio of the dual-band antenna device can be less than 2.0:1 in the working range of 2.4-2.5GHz and 4.9-7.125GHz. Detailed data are presented in the following Tables 1 to 3.

[0028] Table 1

[0029]

[0030] Table 2

[0031]

[0032] Table 3

[0033]

[0034] According to the above, the utility model can achieve parameter requirements in multiple frequency ranges by using multiple groups of dipole antennas at the same time.

[0035]

Explanation of symbols

[0036] 1: Dual-band antenna device

[0037] 11:Substrate

[0038] 111: Noodles

[0039] 12,13,14,15: Radiating units

[0040] 16: First transmission unit

[0041] 17: Second transmission unit

[0042] 18: Signal feeding component

[0043] 19: Grounding components

[0044] 121, 122, 131, 132, 141, 142, 151, 152: radiation member 161: first end

[0045] 162: Second End

[0046] 163:Signal feed node

[0047] 171: First End

[0048] 172: Second End

[0049] 173: Ground node

[0050] D1,D2: Direction

[0051] 1211,1411:Part 1

[0052] 1212: Part 2

[0053] 1311: Side near the outer edge of the overall structure

[0054] W1,W2,W3,W4,W5: Width

[0055] L1, L2, L3, L4, L5: Length

[0056] G1,G2,G3,G4,G5: interval.

Claims

1. A dual-frequency antenna device, characterized in that: Include: substrate; A plurality of groups of radiation units are arranged on the substrate, each group comprising two radiation components; A first transmission unit, disposed on the substrate, having first ends of two first radiation components connected to two radiation components of the plurality of radiation components, second ends of two first radiation components connected to the other two radiation components of the plurality of radiation components, and a signal feeding node; as well as The second transmission unit is disposed on the substrate and has a first end of two second radiation components connected to the two radiation units, a second end of two second radiation components connected to the other two radiation units, and a ground node.

2. The dual-frequency antenna device according to claim 1, characterized in that: The first transmission units of the plurality of first radiation members extend along a first direction, and the second transmission units of the plurality of second radiation members extend along a second direction. The first direction is substantially opposite to the second direction.

3. The dual-frequency antenna device according to claim 1, characterized in that: The two radiation units or the two first radiation components or the second radiation components of the other two radiation units include: A first frequency radiation member, comprising a first portion and a second portion, wherein a width of the first portion is greater than a width of the second portion; as well as The second frequency radiation component is arranged along a first direction with the first portion, and the second frequency radiation component is arranged along a second direction intersecting the first direction with the second portion.

4. The dual-frequency antenna device according to claim 3, characterized in that: There is a gap between the first portion and the second frequency radiation member, and the width of the gap is 1.5 mm.

5. The dual-frequency antenna device according to claim 3, characterized in that: There is a gap between the second portion and the second frequency radiation member, and the width of the gap is 0.6 mm.

6. The dual-frequency antenna device according to claim 3, characterized in that: A side of the second frequency radiation member away from the first frequency radiation member has a chamfered structure.

7. The dual-frequency antenna device according to claim 6, characterized in that: The chamfered structure includes two spaces, a wider one of the plurality of spaces has a width of 4 mm, and a narrower one of the plurality of spaces has a width of 1 mm.

8. The dual-frequency antenna device according to claim 1, characterized in that: The plurality of radiation units, the first transmission unit and the second transmission unit are all disposed on the same surface of the substrate.

9. The dual-frequency antenna device according to claim 1, characterized in that: Also includes: a signal feeding component, disposed on the substrate and connected to the signal feeding node of the first transmission unit; and A grounding component is disposed on the substrate and connected to the grounding node of the second transmission unit.

10. The dual-frequency antenna device according to claim 9, characterized in that: Also includes: The coaxial cable comprises a signal feeding conductor and a grounding conductor, wherein the signal feeding conductor is connected to the signal feeding node of the first transmission unit, and the grounding conductor is connected to the grounding node of the second transmission unit.

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