A SUB_6G external antenna with high gain at high frequency

Abstract

The utility model relates to a SUB_6G external antenna with high gain in high frequency, including copper clad PCB, two metal parts, two first coaxial cables and reflector plate, copper clad PCB includes substrate and two first copper plate and two second copper plate covered on the substrate, and metal part is welded on the first copper plate, and one side of first copper plate is equipped with the jack, and second copper plate is parallel and arranged on one side of first copper plate, and first copper plate and second copper plate are connected through second coaxial line, and the inner core of first coaxial cable is connected main feeding point on the substrate, and the shielding layer of first coaxial cable is connected second copper plate, and the below of copper clad PCB is equipped with reflector plate, and the size of reflector plate is greater than the size of PCB. The reflector plate reflects the electromagnetic wave of the metal part, the high frequency part of first copper plate and the high frequency part of second copper plate to -Z direction, thereby obtaining better directivity, thereby obtaining directional radiation, and the electromagnetic wave is more concentrated, the transmission distance is farther, and the antenna gain is improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile communication antenna technology, and in particular to a SUB_6G external antenna with high gain at high frequencies. Background Technology

[0002] With the rapid development of wireless communication technology, communication products are being used more and more widely in various fields, which in turn places higher demands on antenna performance. For example, in 5G NR applications, antennas are required not only to provide good radiation efficiency across the entire frequency band (600-6000MHz), but also to provide high gain in the N77 / N78 / 79 high-frequency bands. While most full-band (600-6000MHz) antennas on the market can meet the radiation efficiency requirements, the electromagnetic waves emitted by these antennas radiate in all directions, with a maximum gain of only 4-5dBi, which is relatively low. Therefore, this invention proposes a SUB_6G external antenna with high gain at high frequencies. Utility Model Content

[0003] The main objective of this invention is to provide a SUB_6G (high frequency) high-gain full-band external antenna to solve the problems mentioned in the background art.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: a SUB_6G external antenna with high gain at high frequencies, comprising a copper-clad PCB, two metal components, two first coaxial cables, and a reflector. The copper-clad PCB includes a substrate and two first copper plates and two second copper plates covering the substrate. The metal components are soldered to the first copper plates. A socket is provided on one side of the first copper plate. The second copper plates are arranged parallel to one side of the first copper plate. The first copper plates and the second copper plates are connected by a second coaxial cable. The inner core of the first coaxial cable is connected to the main feed point on the substrate. The shielding layer of the first coaxial cable is connected to the second copper plate. A reflector is provided below the copper-clad PCB, and the size of the reflector is larger than the size of the PCB.

[0005] Preferably, the metal part is L-shaped, with the vertical part of the metal part facing downwards, the length of the horizontal part of the metal part being longer than the length of its vertical part, and a horizontal U-shaped groove being formed at the top of the vertical part of the metal part.

[0006] Preferably, a gap is left between the two second copper plates.

[0007] The beneficial effects of this utility model are: the reflector reflects the electromagnetic waves radiated in the -z direction emitted by the metal part, the high-frequency part of the first copper plate and the high-frequency part of the second copper plate, thereby obtaining better directivity and thus obtaining directional radiation; the electromagnetic waves are more concentrated, the transmission distance is longer, and the antenna gain is improved. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the SUB_6G external antenna structure with high gain at high frequencies, as an example.

[0009] Figure 2 This is an exploded view of the SUB_6G external antenna with high gain at high frequencies.

[0010] Figure 3 It is a graph showing the isolation between two antennas.

[0011] Figure 4 Line graphs showing the gain and efficiency of ANT_1 in the 617-5950MHz frequency band.

[0012] Figure 5 Line graphs showing the gain and efficiency of ANT_2 in the 617-5950MHz frequency band.

[0013] Figure 6 3D radiation map of ANT_1 in the 3300-4000MHz range.

[0014] Figure 7 3D radiation map of ANT_1 in the range of 5100-5950MHz.

[0015] Figure 8 3D radiation map of ANT_2 in the 3300-4000MHz range.

[0016] Figure 9 3D radiation map of ANT_2 at 5100 - 5950MHz.

[0017] The numbers in the image represent: 1. Copper-clad PCB; 2. Metal components; 3. Substrate; 4. First copper plate; 5. Second copper plate; 6. First coaxial cable; 7. U-shaped groove; 8. Reflector. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to specific embodiments.

[0019] Example: like Figure 1 and Figure 2As shown, this utility model discloses a high-gain SUB_6G external antenna at high frequencies, comprising a copper-clad PCB 1, two metal components 2, and two first coaxial cables 6. The copper-clad PCB 1 includes a substrate 3 and two first copper plates 4 and two second copper plates 5 covering the substrate 3. One side of each first copper plate 4 has a socket, into which the connection point of each metal component 2 is inserted and soldered to the first copper plate 4. The second copper plates 5 are arranged parallel to one side of each first copper plate 4. The first copper plates 4 and the second copper plates 5 are connected by a second coaxial cable. The inner core of the PCB is connected to the main feed point on the substrate 3. The shielding layer of the first coaxial cable 6 is connected to the second copper plate 5 to form a balanced feed. A reflector 8 is provided below the PCB. The size of the reflector 8 is larger than the size of the PCB. The metal part 2, the first copper plate 4, the second copper plate 5, and the first coaxial cable 6 on the same side form an antenna. The metal part 2 and the first copper plate act as radiators, and the second copper plate acts as ground. The two antennas are marked as ANT_1 and ANT_2, respectively. They are connected by the second coaxial cable and can simultaneously excite multiple resonant modes, covering the entire SUB_6G frequency band without the need for a complex multi-frequency matching network. The reflector 8 reflects the electromagnetic waves radiated by the antenna towards -Z, thereby obtaining better directivity. Figure 6-9 As shown, the main radiation direction is along the +z axis, thus achieving directional radiation; the electromagnetic waves are more concentrated, the transmission distance is longer, and the antenna gain is improved, such as... Figure 4 As shown, ANT_1 significantly outperforms the low-frequency band in both gain and efficiency at the target high-frequency bands (N77 / N78 / N79), with particularly outstanding gains (7.7dBi) at 3.5GHz in the N78 band and efficiency (72.8%) at 4200MHz in the N77 band. This fully meets the design goal of "providing high gain and good efficiency at high frequencies," making it suitable for the high-frequency performance requirements of 5G NR communication scenarios. Figure 5 As shown, ANT_2 significantly outperforms the low-frequency band in both gain and efficiency in the target high-frequency bands (N77 / N78 / N79). In particular, the gain (8.2dBi) and efficiency (72.6%) of the N77 band at 4100MHz and the efficiency (72.8%) of the N79 band at 4800MHz are outstanding, fully meeting the design requirements of 5G NR for high gain and high efficiency in high-frequency bands, and adapting to communication scenarios of the N77 / N78 / N79 bands.

[0020] The metal component 2 is L-shaped, with its vertical portion facing downwards. The length of the horizontal portion of the metal component 2 is longer than the length of its vertical portion. A horizontal U-shaped groove 7 is formed at the top of the vertical portion of the metal component 2, thereby introducing discontinuities on the metal component 2, forcing the current to detour and forming new current paths. Different current path lengths correspond to different resonant frequencies. At the same time, the U-shaped groove 7 can be regarded as a small resonator, coupling with the main metal component 2 to generate additional frequency bands.

[0021] A gap is left between the two second copper plates 5 to form an insulating strip, thereby achieving good isolation between the two antennas and avoiding interference between them. Figure 3 As shown, the S21 isolation is mostly between -15dB and -30dB across the entire frequency band, and close to -25dB in the high-frequency band (such as 5GHz), indicating good isolation.

[0022] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A SUB_6G external antenna with high gain at high frequencies, characterized in that: The device includes a copper-clad PCB, two metal components, two first coaxial cables, and a reflector. The copper-clad PCB includes a substrate and two first copper plates and two second copper plates covering the substrate. The metal components are soldered to the first copper plates. One side of the first copper plate has a hole. The second copper plates are arranged parallel to one side of the first copper plate. The first copper plates and the second copper plates are connected by a second coaxial cable. The inner core of the first coaxial cable is connected to the main power supply point on the substrate. The shielding layer of the first coaxial cable is connected to the second copper plate. A reflector is provided below the copper-clad PCB. The size of the reflector is larger than the size of the PCB.

2. The SUB_6G external antenna with high gain at high frequencies according to claim 1, characterized in that: The metal part is L-shaped, with its vertical portion facing downwards. The length of the horizontal portion of the metal part is longer than the length of its vertical portion, and a horizontal U-shaped groove is formed at the top of the vertical portion of the metal part.

3. The SUB_6G external antenna with high gain at high frequencies according to claim 2, characterized in that: A gap is left between the two second copper plates.

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