High-gain PCB antenna

Abstract

The utility model is suitable for the technical field of wireless communication, and provides a high-gain PCB antenna, which comprises a connector used for being connected with a signal source and a coaxial cable; the coaxial cable is electrically connected with the antenna plate; and the antenna plate is provided with at least two groups of array antennas arranged along the length direction of the coaxial cable, and each group of array antennas is provided with two copper-clad arrays. According to the utility model, the connector used for connecting the signal source and the coaxial cable is arranged, at least two groups of array antennas arranged along the length direction of the coaxial cable are arranged on the antenna plate, and two copper-clad arrays are arranged in each group of array antennas. Each copper-clad oscillator is of a symmetrical structure, and the two symmetrical parts are distributed on the two sides of the coaxial cable so that omnidirectional coverage can be provided for the antenna, the theoretical value of the antenna gain can meet the use requirement, the symmetrical state of the antenna radiator can be maintained, the radiation direction of the antenna cannot be changed, and the use effect cannot be affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless communications, and in particular relates to a high-gain PCB antenna. Background Art

[0002] With the development of technology, the application of antennas in various fields is becoming more and more diversified, including but not limited to the following major fields: mobile communications, broadcasting and television, satellite communications, radar systems, navigation systems, military defense, aerospace, Internet of Things, scientific research and education, etc.

[0003] When selecting an antenna, you need to consider its gain and compatibility with the specific application scenario. Antenna gain has a wide range of practical applications, including but not limited to the following areas: wireless communication systems, satellite communications, radar systems, mobile communications, wireless local area networks, etc. Although high-gain antennas can improve signal strength and receiving sensitivity, they may also increase system complexity and cost, and have stricter requirements for installation and alignment.

[0004] In the prior art, dipole antennas are often used in antenna design due to their simple structure, ease of construction, and ease of maintenance. On the horizontal plane, dipole antennas provide omnidirectional coverage, meaning they have similar radiation performance in all directions. However, traditional dipole antennas have a theoretical antenna gain of 2.5 DBI (decibel isotropic). When operating in relatively complex environments, signals with 2.5 DBI often fail to meet usage requirements. To increase the antenna gain to meet these requirements, changing the symmetry of the antenna dipole leads to asymmetry in the antenna radiator, which in turn changes the radiation direction and affects the performance. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a high-gain PCB antenna, aiming to solve the problem that traditional dipole antennas have a theoretical antenna gain of 2.5DBI (decibel isotropic). When operating in relatively complex environments, the 2.5DBI signal often cannot meet the usage requirements. When the antenna gain needs to be increased to meet the usage requirements, the symmetrical line of the antenna dipole is changed, resulting in an asymmetric antenna radiator, which will change the radiation direction of the antenna and affect the usage effect.

[0006] The embodiment of the present utility model is implemented as follows: a high-gain PCB antenna, the high-gain PCB antenna comprising:

[0007] A connector is provided at one end of the coaxial cable and is used to connect the coaxial cable to the signal source;

[0008] a coaxial cable, wherein the other end of the coaxial cable is electrically connected to the antenna board;

[0009] The antenna board is provided with at least two groups of array antennas arranged along the length direction of the coaxial cable. Each group of array antennas is provided with two copper-clad arrays. Each copper-clad array has a symmetrical structure and the two symmetrical parts are distributed on both sides of the coaxial cable.

[0010] Preferably, the distance between two adjacent groups of array antennas is the length of one copper-clad array.

[0011] Preferably, the array antenna includes a first copper-clad array and a second copper-clad array, and the first copper-clad array and the second copper-clad array are connected in series via a coaxial cable.

[0012] Preferably, the first copper-clad array is U-shaped and its opening faces the connector, the center position of the length direction of the bottom edge of the first copper-clad array is connected to the coaxial cable, the bottom edge of the first copper-clad array is rectangular, and the side edges of the first copper-clad array are arranged in multiple sections with different shapes. The first section connected to the bottom edge is a rectangle, the second section connected to the first section is U-shaped and one side edge is connected to the first section, the third section connected to the other side edge of the second section is an isosceles triangle and its vertex angle is connected to the other side edge of the second section, the side edge of the first section and one bottom angle of the third section are located on the same horizontal plane, the other bottom angle of the third section is higher than the bottom edge of the second section, and the bottom edge of the second section is close to the coaxial cable.

[0013] Preferably, the second copper-clad array is U-shaped and its opening faces away from the first copper-clad array of the same group of array antennas. The center position of the bottom length of the second copper-clad array is connected to the coaxial cable. The bottom of the second copper-clad array is rectangular and chamfers are set on both sides of the outer side of the bottom. The side of the second copper-clad array is set into multiple sections and has different shapes. The fourth section connected to the bottom is rectangular, the fifth section connected to the fourth section is U-shaped and one side is connected to the fourth section. The sixth section connected to the other side of the fifth section is an isosceles triangle and its vertex angle is connected to the other side of the fifth section. The side of the fourth section and one bottom angle of the sixth section are located on the same horizontal plane, and the other bottom angle of the sixth section is flush with the bottom of the fifth section.

[0014] Preferably, the connector is provided with a first connection end and a second connection end, the first connection end is electrically connected to the coaxial cable, and the second connection end is connected to the signal source to realize signal transmission between the signal source and the coaxial cable.

[0015] An embodiment of the present invention provides a high-gain PCB antenna. The present invention is provided with a connector for connecting a signal source and a coaxial cable. The coaxial cable is connected to an antenna board, and at least two groups of array antennas arranged along the length direction of the coaxial cable are provided on the antenna board. Two copper-clad arrays are provided in each group of array antennas. Each copper-clad array has a symmetrical structure and the two symmetrical parts are distributed on both sides of the coaxial cable to provide omnidirectional coverage for the antenna, so as to achieve not only the theoretical value of the antenna gain meeting the use requirements but also maintaining the symmetrical state of the antenna radiator, without changing the radiation direction of the antenna and affecting the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional structural diagram of a high-gain PCB antenna provided in an embodiment of the present utility model.

[0017] In the accompanying drawings: 1. Connector; 2. Coaxial cable; 3. Array antenna; 31. First copper-clad array; 32. Second copper-clad array. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0020] like Figure 1 , which is a structural diagram of a high-gain PCB antenna provided by an embodiment of the present invention, includes: a connector 1, which is provided at one end of a coaxial cable 2 and is used to connect the coaxial cable 2 to a signal source;

[0021] A coaxial cable 2, the other end of the coaxial cable 2 being electrically connected to the antenna board;

[0022] Antenna board, on which at least two groups of array antennas 3 are arranged along the length direction of the coaxial cable 2, each group of array antennas 3 is provided with two copper-clad arrays, each copper-clad array has a symmetrical structure and the two symmetrical parts are distributed on both sides of the coaxial cable 2.

[0023] In an embodiment of the present invention, preferably, the high-gain PCB antenna can be applied to wireless communication systems and application scenarios with high requirements for signal strength and receiving sensitivity. The high-gain PCB antenna mainly includes a connector 1, a coaxial cable 2 and an antenna board. The connector 1 is connected to the signal source to facilitate transmission of the signal from the connector 1 to the coaxial cable 2 connected to the connector 1. The coaxial cable 2 is connected to the antenna board. At least two groups of array antennas 3 arranged along the length direction of the coaxial cable 2 are provided on the antenna board. Each group of array antennas 3 has two copper-clad arrays with a symmetrical structure for signal reception and distribution. The copper-clad arrays are installed on the axis of the coaxial cable 2 to achieve superposition of multiple arrays to improve the theoretical gain value of the antenna. Each copper-clad array is a symmetrical structure and the axis coincides with the axis of the coaxial cable 2 so that the antenna can achieve omnidirectional radiation and achieves 5DBI omnidirectional radiation at a frequency covering 1710-3600MHZ. Without changing the symmetrical structure of the antenna radiator, the theoretical value of the antenna gain is improved and its omnidirectional radiation effect is maintained.

[0024] In one example of the present invention, the present invention provides a connector 1 for connecting a signal source and a coaxial cable 2, the coaxial cable 2 is connected to an antenna board, and at least two groups of array antennas 3 arranged along the length direction of the coaxial cable 2 are provided on the antenna board, and two copper-clad arrays are provided in each group of array antennas 3. Each copper-clad array has a symmetrical structure and the two symmetrical parts are distributed on both sides of the coaxial cable 2 to provide omnidirectional coverage for the antenna so as to achieve not only the theoretical value of the antenna gain meeting the use requirements and maintaining the symmetrical state of the antenna radiator, but also without changing the radiation direction of the antenna and affecting the use effect.

[0025] like Figure 1 As shown in FIG. 1 , as a preferred embodiment of the present invention, the distance between two adjacent groups of array antennas 3 is the length of one copper-clad array.

[0026] In an embodiment of the present invention, preferably, the spacing between two adjacent groups of array antennas 3 can be set to the axial length of a copper-clad array, which is also a distance of one-quarter wavelength, and the two adjacent groups of array antennas 3 can use the radial direction perpendicular to the axial direction of the coaxial cable 2 and the straight line where the center point of the spacing between the two groups of array antennas 3 is located as the symmetry axis. The two groups of array antennas 3 form an axially symmetrical relationship, so that the antenna radiator is symmetrical to achieve omnidirectional radiation, and each group of array antennas 3 is divided into two copper-clad arrays to improve the theoretical value of the antenna gain so that it can be used in relatively complex environments, reaching 5DBI so that the theoretical value of the antenna gain meets the usage requirements.

[0027] like Figure 1As shown in FIG. 1 , as a preferred embodiment of the present invention, the array antenna 3 includes a first copper-clad array 31 and a second copper-clad array 32 , and the first copper-clad array 31 and the second copper-clad array 32 are connected in series via a coaxial cable 2 .

[0028] In the embodiment of the present invention, preferably, each group of array antennas 3 may be provided with a first copper-clad array 31 and a second copper-clad array 32 , and the first copper-clad array 31 and the second copper-clad array 32 are connected in parallel and in series on the coaxial cable 2 .

[0029] like Figure 1 As shown, as a preferred embodiment of the present invention, the first copper-clad array 31 is U-shaped and its opening faces the connector 1. The center position of the length direction of the bottom side of the first copper-clad array 31 is connected to the coaxial cable 2. The bottom side of the first copper-clad array 31 is rectangular. The side of the first copper-clad array 31 is set to multiple sections and has different shapes. The first section connected to the bottom side is a rectangle, the second section connected to the first section is U-shaped and one side is connected to the first section, the third section connected to the other side of the second section is an isosceles triangle and its vertex is connected to the other side of the second section. The side of the first section and one bottom angle of the third section are located on the same horizontal plane, the other bottom angle of the third section is higher than the bottom side of the second section, and the bottom side of the second section is close to the coaxial cable 2.

[0030] In an embodiment of the present invention, preferably, the first copper-clad array 31 can be a special-shaped block and is similar to a U-shape, with its two side edges distributed on both sides of the coaxial cable 2 and the shapes and sizes of the two side edges forming a mirror relationship with the coaxial cable 2 as the axis, and the middle position of the bottom edge is connected with the coaxial cable 2.

[0031] like Figure 1 As shown, as a preferred embodiment of the present invention, the second copper-clad array 32 is U-shaped and its opening faces away from the first copper-clad array 31 of the same array antenna 3. The center position of the bottom length of the second copper-clad array 32 is connected to the coaxial cable 2. The bottom of the second copper-clad array 32 is rectangular and chamfers are set on both sides of the outer side of the bottom. The side of the second copper-clad array 32 is set in multiple sections and has different shapes. The fourth section connected to the bottom is rectangular, the fifth section connected to the fourth section is U-shaped and one side is connected to the fourth section. The sixth section connected to the other side of the fifth section is an isosceles triangle and its vertex is connected to the other side of the fifth section. The side of the fourth section and one bottom corner of the sixth section are located on the same horizontal plane, and the other bottom corner of the sixth section is flush with the bottom of the fifth section.

[0032] In an embodiment of the present invention, preferably, the second copper-clad array 32 can be a special-shaped block and is similar to a U-shape, with its two side edges distributed on both sides of the coaxial cable 2 and the shapes and sizes of the two side edges forming a mirror relationship with the coaxial cable 2 as the axis, and the middle position of the bottom edge is connected with the coaxial cable 2.

[0033] like Figure 1 As shown, as a preferred embodiment of the present invention, the connector 1 is provided with a first connection end and a second connection end, the first connection end is electrically connected to the coaxial cable 2, and the second connection end is connected to the signal source to realize signal transmission between the signal source and the coaxial cable 2.

[0034] In an embodiment of the present utility model, preferably, the connector 1 is provided with two connection ends and is electrically connected to the signal source and the coaxial cable 2 respectively to facilitate signal transmission. The connector 1 is connected to the signal source and transmits the signal to the copper-clad array on the antenna board through the coaxial cable 2, and the copper-clad array radiates omnidirectionally, so that it reaches the theoretical value of antenna gain adapted to the application environment, and can reach up to 6DBI.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-gain PCB antenna, characterized in that: The high-gain PCB antenna includes: A connector is provided at one end of the coaxial cable and is used to connect the coaxial cable to the signal source; a coaxial cable, wherein the other end of the coaxial cable is electrically connected to the antenna board; The antenna board is provided with at least two groups of array antennas arranged along the length direction of the coaxial cable. Each group of array antennas is provided with two copper-clad arrays. Each copper-clad array has a symmetrical structure and the two symmetrical parts are distributed on both sides of the coaxial cable.

2. The high-gain PCB antenna according to claim 1, characterized in that: The distance between two adjacent groups of array antennas is the length of one copper-clad array.

3. The high-gain PCB antenna according to claim 2, characterized in that: The array antenna is provided with a first copper-clad array and a second copper-clad array, and the first copper-clad array and the second copper-clad array are connected in series via a coaxial cable.

4. The high-gain PCB antenna according to claim 3, characterized in that: The first copper-clad array is U-shaped and its opening faces the connector. The center position of the length direction of the bottom side of the first copper-clad array is connected to the coaxial cable. The bottom side of the first copper-clad array is rectangular. The side of the first copper-clad array is set to multiple sections and has different shapes. The first section connected to the bottom side is rectangular, the second section connected to the first section is U-shaped and one side is connected to the first section. The third section connected to the other side of the second section is an isosceles triangle and its vertex is connected to the other side of the second section. The side of the first section and one bottom corner of the third section are located on the same horizontal plane, the other bottom corner of the third section is higher than the bottom side of the second section, and the bottom side of the second section is close to the coaxial cable.

5. The high-gain PCB antenna according to claim 3, characterized in that: The second copper-clad array is U-shaped and its opening faces away from the first copper-clad array of the same group of array antennas. The center position of the bottom length of the second copper-clad array is connected to the coaxial cable. The bottom of the second copper-clad array is rectangular and chamfers are set on two outer sides of the bottom. The side of the second copper-clad array is set in multiple sections with different shapes. The fourth section connected to the bottom is rectangular, the fifth section connected to the fourth section is U-shaped and one side is connected to the fourth section. The sixth section connected to the other side of the fifth section is an isosceles triangle and its vertex is connected to the other side of the fifth section. The side of the fourth section and one bottom corner of the sixth section are located on the same horizontal plane, and the other bottom corner of the sixth section is flush with the bottom of the fifth section.

6. The high-gain PCB antenna according to claim 1, characterized in that: The connector is provided with a first connection end and a second connection end, the first connection end is electrically connected to the coaxial cable, and the second connection end is connected to the signal source to realize signal transmission between the signal source and the coaxial cable.

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