A combined high-gain omnidirectional vertically polarized antenna

Abstract

The application discloses a combined high-gain omnidirectional vertical polarization antenna, which comprises a high-frequency module, a medium-frequency module and a low-frequency module. The high-frequency module comprises a high-frequency radiation assembly and a reflecting plate arranged in parallel from top to bottom, and the absolute height between the high-frequency radiation assembly and the reflecting plate is less than or equal to a first preset value. The medium-frequency module and the low-frequency module are arranged in parallel from top to bottom above the reflecting plate. The medium-frequency module comprises a medium-frequency dielectric plate, a medium-frequency feeding unit and a medium-frequency radiation unit which are arranged on the front face and the back face of the medium-frequency dielectric plate respectively and are electrically connected. The low-frequency module comprises a low-frequency dielectric plate, a low-frequency feeding unit and a low-frequency radiation unit which are arranged on the front face and the back face of the low-frequency dielectric plate respectively and are electrically connected. The front face of the medium-frequency dielectric plate and the front face of the low-frequency dielectric plate are arranged oppositely. Thus, the medium-frequency radiation unit arranged on the back face of the medium-frequency dielectric plate and the low-frequency radiation unit arranged on the back face of the low-frequency dielectric plate are mutually reflective.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wireless communication, in particular to a combined high-gain omnidirectional vertical polarization antenna. BACKGROUND

[0002] In recent years, the modern communication system develops rapidly, and people's demand for communication is also growing. The existing antenna frequency band width has been unable to meet people's growing demand for communication. Secondly, with the development of communication system, the number of antennas on the carrier platform increases sharply, and the antenna size is usually large. In particular, the monopole antenna is widely used in wireless communication equipment, has simple structure and can perform omnidirectional radiation. The polarization size and wavelength ratio of the monopole antenna is 1 / 4, so the antenna size cannot be reduced. The working bandwidth of the monopole antenna is usually narrow, and a single antenna cannot cover different working frequency bands at the same time, so the antenna arrangement often needs to occupy a large amount of space, and the increasingly tight space resources are more and more tense.

[0003] However, the vertical polarization omnidirectional antenna described in the patent CN 105914453 A on the market can realize the miniaturization and low profile of the vertical polarization antenna by feeding the radiation sheet and the metal bottom disc through the coaxial cable, reduce the size of the antenna, and reduce the space required for arranging the antenna, but still cannot increase the frequency band width of the antenna and cannot meet people's communication needs. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, provide a combined high-gain omnidirectional vertical polarization antenna with high gain and high frequency band width, and increase the frequency band width and coverage frequency range of the antenna by adjusting the arrangement mode of the high-frequency, medium-frequency and low-frequency modules, while improving the space utilization and reducing the space required for arranging the antenna.

[0005] In order to achieve the above purpose, the present application provides a combined high-gain omnidirectional vertical polarization antenna, which comprises a high-frequency module, a medium-frequency module and a low-frequency module. The high-frequency module comprises a high-frequency radiation assembly and a reflection plate arranged in parallel from top to bottom, and the absolute height between the high-frequency radiation assembly and the reflection plate is less than or equal to a first preset value. The medium-frequency module and the low-frequency module are arranged vertically in parallel above the reflection plate. The medium-frequency module comprises a medium-frequency dielectric plate, a medium-frequency feeding unit and a medium-frequency radiation unit which are respectively arranged on the front surface and the back surface of the medium-frequency dielectric plate and are electrically connected to each other. The low-frequency module comprises a low-frequency dielectric plate, a low-frequency feeding unit and a low-frequency radiation unit which are respectively arranged on the front surface and the back surface of the low-frequency dielectric plate and are electrically connected to each other. The front surface of the dielectric plate of the medium-frequency module is arranged opposite to the front surface of the dielectric plate of the low-frequency module.

[0006] Further, the high frequency module further comprises a coaxial cable, the high frequency radiation assembly is formed with a penetrating hole for the coaxial cable to penetrate, and two ends of the coaxial cable are connected with the high frequency radiation assembly and the reflecting plate respectively.

[0007] Further, the high frequency radiation assembly comprises the radiation disc, a first radiation ring disc coaxially arranged outside the radiation disc, a second radiation ring disc coaxially arranged outside the first radiation ring disc, and a high frequency dielectric plate, wherein two ends of the coaxial cable comprise an inner conductor and an outer conductor, the inner conductor is connected with the radiation disc through the penetrating hole, and the outer conductor is connected with the reflecting plate.

[0008] Further, the medium frequency dielectric plate is further arranged with a medium frequency parasitic unit, the medium frequency feeding unit is provided with a medium frequency feeding point, the medium frequency parasitic unit is arranged on the front surface of the medium frequency dielectric plate and adjacent to the medium frequency feeding point, and the medium frequency parasitic unit comprises two parasitic patches composed of a left medium frequency parasitic patch and a right medium frequency parasitic patch.

[0009] Further, the medium frequency radiation unit comprises two radiation patches composed of an upper medium frequency radiation patch and a lower medium frequency radiation patch, and the medium frequency feeding unit adopts a three-arm structure, wherein the upper two arms are inductively coupled with the upper medium frequency radiation patch, the left medium frequency parasitic patch and the right medium frequency parasitic patch, and the lower arm is connected with the lower medium frequency radiation patch at the medium frequency penetrating hole.

[0010] Further, the low frequency dielectric plate is further arranged with a low frequency parasitic unit, the low frequency feeding unit is provided with a low frequency feeding point, the low frequency parasitic unit is arranged on the front surface of the low frequency dielectric plate and adjacent to the low frequency feeding point, and the low frequency parasitic unit comprises two parasitic patches composed of a left low frequency parasitic patch and a right low frequency parasitic patch.

[0011] Further, the low frequency radiation unit comprises two radiation patches composed of an upper low frequency radiation patch and a lower low frequency radiation patch, and the low frequency feeding unit adopts a three-arm structure, wherein the upper two arms are inductively coupled with the upper low frequency radiation patch, the left low frequency parasitic patch and the right low frequency parasitic patch, and the lower arm is connected with the lower low frequency radiation patch at the low frequency penetrating hole.

[0012] The application has the advantages that the medium frequency radiation unit arranged on the back surface of the medium frequency dielectric plate and the low frequency radiation unit arranged on the back surface of the low frequency dielectric plate serve as a virtual reflecting ground for each other, the coverage range and intensity of the signal are enhanced, and the frequency band width of the antenna is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The overall structure schematic diagram of the combined high-gain omnidirectional vertical polarization antenna.

[0014] Figure 2 The structure schematic diagram of the high-frequency module of the combined high-gain omnidirectional vertical polarization antenna.

[0015] Figure 3 The structure schematic diagram of the high-frequency radiation assembly of the combined high-gain omnidirectional vertical polarization antenna.

[0016] Figure 4 The structure schematic diagram of the intermediate-frequency module of the combined high-gain omnidirectional vertical polarization antenna.

[0017] Figure 5 The structure schematic diagram of the low-frequency module of the combined high-gain omnidirectional vertical polarization antenna.

[0018] Figure 6 The local schematic diagram of the high-frequency module under TM10 mode superposition.

[0019] Figure 7 The far-field radiation efficiency parameter diagram of the high-frequency module at 3.3 GHz.

[0020] Figure 8 The far-field radiation efficiency parameter diagram of the high-frequency module at 3.8 GHz.

[0021] Figure 9 The far-field radiation efficiency parameter diagram of the high-frequency module at 4.3 GHz.

[0022] Figure 10 The far-field radiation efficiency parameter diagram of the high-frequency module at 4.8 GHz.

[0023] Figure 11 The return loss parameter diagram of an embodiment applying the technical scheme of the present application.

[0024] Figure 12 The peak gain parameter diagram of an embodiment applying the technical scheme of the present application.

[0025] Wherein, 1-high frequency module, 2-intermediate frequency module, 3-low frequency module, 11-high frequency radiation assembly, 12-coaxial cable, 13-reflective plate, 111-radiation disc, 112-first radiation ring piece, 113-second radiation ring piece, 114-high frequency dielectric plate, 21-intermediate frequency dielectric plate, 22-intermediate frequency feed unit, 23-intermediate frequency radiation unit, 231-upper intermediate frequency radiation patch, 232-lower intermediate frequency radiation patch, 24-intermediate frequency parasitic unit, 241-left intermediate frequency parasitic patch, 242-right intermediate frequency parasitic patch, 31-low frequency dielectric plate, 32-low frequency feed unit, 33-low frequency radiation unit, 331-upper low frequency radiation patch, 332-lower low frequency radiation patch, 34-low frequency parasitic unit, 341-left low frequency parasitic patch, 342-right low frequency parasitic patch. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. It should be noted that the "first", "second" described in the present application do not represent the specific number and order, but only for the name of the distinction.

[0027] Referring to the drawings Figures 1-5 As shown in the drawings, the combined high-gain omnidirectional vertical polarization antenna in the embodiment includes a high frequency module 1, an intermediate frequency module 2 and a low frequency module 3. Among them, the working frequency band of the high frequency module 1 is 3300-5000MHz, the working frequency band of the intermediate frequency module 2 is 1710-2690MHz, and the working frequency band of the low frequency module 3 is 706-960MHz. Compared with the traditional antenna, the coverage range of 4800-5000MHz frequency band is increased. In addition, the combined high-gain omnidirectional vertical polarization antenna in the embodiment also supports 2G, 3G, LTE, Sub-6GHz 5G and other frequency band full coverage, which can further improve the use frequency band width of each frequency band and reduce the construction and use cost of antenna signal transmission.

[0028] Specifically, referring to the drawings Figure 1The whole structure of the combined high-gain omnidirectional vertical polarization antenna is shown in the figure. The high-frequency module 1 includes a high-frequency radiation assembly 11 and a reflecting plate 13 arranged in parallel from top to bottom, and the absolute height between the high-frequency radiation assembly 11 and the reflecting plate 13 is less than or equal to a first preset value. The medium-frequency module 2 and the low-frequency module 3 are arranged in parallel from top to bottom above the reflecting plate 13. The medium-frequency module 2 includes a medium-frequency dielectric plate 21, a medium-frequency feeding unit 22 and a medium-frequency radiation unit 23 arranged on the front surface and the back surface of the medium-frequency dielectric plate 21 respectively and electrically connected with each other. The low-frequency module 3 includes a low-frequency dielectric plate 31, a low-frequency feeding unit 32 and a low-frequency radiation unit 33 arranged on the front surface and the back surface of the low-frequency dielectric plate 31 respectively and electrically connected with each other. The front surface of the medium-frequency dielectric plate 21 and the front surface of the low-frequency dielectric plate 31 are arranged in opposite directions. At this time, the reflecting plate 13 serves as the zero potential of the combined high-gain omnidirectional vertical polarization antenna.

[0029] Further, the medium-frequency module 2 further includes a medium-frequency support and two medium-frequency support columns for supporting and fixing the medium-frequency dielectric plate 21 so that the medium-frequency dielectric plate 21 can be stably erected on the reflecting plate 13. The medium-frequency support and the medium-frequency dielectric plate 21 are connected by two symmetrically arranged medium-frequency support columns. It should be noted that the material for manufacturing the medium-frequency support includes but is not limited to acrylic, and the material for manufacturing the two medium-frequency support columns also includes but is not limited to nylon. Similarly, the low-frequency module 3 also includes a low-frequency support and two low-frequency support columns for supporting and fixing the low-frequency dielectric plate 31 so that the low-frequency dielectric plate 31 can be stably erected on the reflecting plate 13. The low-frequency support and the low-frequency dielectric plate 31 are connected by two symmetrically arranged low-frequency support columns. It should be noted that the material for manufacturing the low-frequency support includes but is not limited to acrylic, and the material for manufacturing the two low-frequency support columns also includes but is not limited to nylon.

[0030] In an embodiment of the present application, the high-frequency radiation assembly 11 and the reflecting plate 13 are designed as two discs with coaxial centers arranged in parallel from top to bottom, and the radial width of the reflecting plate 13 is larger to accommodate the medium-frequency module 2 and the low-frequency module 3. In addition, the distance between the high-frequency radiation assembly 11 and the reflecting plate 13 is only 7mm, which realizes low profile design, reduces the size of the antenna and reduces the occupied space.

[0031] Specifically, referring to the accompanying drawings Figure 2The structure diagram of the combined high-gain omnidirectional vertical polarization antenna high-frequency module 1 is shown, the high-frequency module 1 comprises a high-frequency radiation assembly 11, a coaxial cable 12, a reflecting plate 13 and four support columns. The four support columns are arranged between the high-frequency radiation assembly 11 and the reflecting plate 13, and are used for supporting the high-frequency radiation assembly 11. The high-frequency radiation assembly 11 is formed with a through hole for the coaxial cable 12 to pass through, and the coaxial cable 12 is connected with the high-frequency radiation assembly 11 and the reflecting plate 13 at two ends respectively.

[0032] More specifically, referring to the accompanying drawings Figure 3 The structure diagram of the combined high-gain omnidirectional vertical polarization antenna high-frequency radiation assembly 11 is shown, the high-frequency radiation assembly 11 comprises a radiation disc 111, a first radiation ring 112, a second radiation ring 113 and a high-frequency dielectric plate 114. The radiation disc 111 is arranged at the radiation center of the high-frequency radiation assembly 11, and is also the center of the disc-shaped high-frequency dielectric plate 114. The first radiation ring 112 is coaxially arranged around the radiation disc 111, and the second radiation ring 113 is coaxially arranged around the first radiation ring 112. The coaxial cable 12 comprises an inner conductor and an outer conductor at two ends. The inner conductor is connected with the radiation disc 111 through the through hole, and the outer conductor is connected with the reflecting plate 13.

[0033] In the embodiment of the present application, the coaxial feeding structure is adopted. When the electric signal is fed into the coaxial cable 12, the high points and the low points between the high-frequency radiation assembly 11 and the reflecting plate 13 are periodically changed, so that the current changes along the vertical direction constantly, the vertical polarization of the antenna is realized, the impedance frequency band width gain is greater than 8dBi, and the impedance frequency band width of 3300-500MHz is obtained. At the same time, the overall profile height of the high-frequency module 1 is reduced. In addition, when the coaxial feeding is performed, the inner conductor of the coaxial cable 12 excites the radiation disc 111, that is, the TEM mode of the coaxial feeding excites the TM10 mode of the radiation disc 111, and the mode superposition is realized. Then the weak current generated by the radiation disc 111 is coupled to the first radiation ring 112, and then the first radiation ring 112 is coupled to the second radiation ring 113, so that good impedance matching is obtained, and the performance of the antenna is better. It should be noted that the first radiation ring 112 and the second radiation ring 113 can be made of metal or other materials with good conductivity.

[0034] Through the above coaxial feeding structure and low profile design, and mode superposition, the frequency band width is expanded, the radiation range is expanded, the impedance frequency band width of the high-frequency module 1 is 3300-5000MHz, the gain is 6-8.4dBi, and the non-circularity of the radiation pattern is less than 3dB.

[0035] Specifically, referring to the accompanying drawings Figure 4The structure diagram of the combined high-gain omnidirectional vertical polarization antenna low-frequency module 3 is shown, the low-frequency feed unit 32 arranged on the front surface of the low-frequency dielectric plate 31 is provided with a low-frequency feed point at the bottom, and a low-frequency parasitic unit 34 is arranged on the low-frequency dielectric plate 31 to expand the frequency bandwidth.

[0036] The low-frequency radiation unit 33 arranged on the back surface of the low-frequency dielectric plate 31 includes two radiation patches composed of an upper low-frequency radiation patch 331 and a lower low-frequency radiation patch 332.

[0037] Specifically, referring to the accompanying drawings Figure 5 The structure diagram of the combined high-gain omnidirectional vertical polarization antenna low-frequency module 3 is shown, the low-frequency feed unit 32 arranged on the front surface of the low-frequency dielectric plate 31 is provided with a low-frequency feed point at the bottom, and a low-frequency parasitic unit 34 is arranged on the low-frequency dielectric plate 31 to expand the frequency bandwidth.

[0038] The low-frequency radiation unit 33 arranged on the back surface of the low-frequency dielectric plate 31 includes two radiation patches composed of an upper low-frequency radiation patch 331 and a lower low-frequency radiation patch 332.

[0039] In the embodiment of the present application, the front surface of the medium plate of the medium-frequency module 2 and the front surface of the medium plate of the low-frequency module 3 are arranged opposite to each other, at this time, the medium-frequency feed unit 22 and the low-frequency feed unit 32 arranged on the front surfaces of the above two medium plates are opposite to each other, and the medium-frequency radiation unit 23 and the low-frequency radiation unit 33 arranged on the back surfaces of the two medium plates are virtual reflections of each other.

[0040] Specifically, when the low-frequency module 3 is working, the intermediate-frequency module 2 has no signal input at this time, and the intermediate-frequency dielectric plate 21 and the low-frequency dielectric plate 31 are arranged side by side, and the intermediate-frequency radiation unit 23 located at the back of the intermediate-frequency dielectric plate 21 just serves as a virtual ground for reflecting the low-frequency module 3. The low-frequency antenna signal output by the low-frequency module 3 is reflected and output after being partially enhanced by the intermediate-frequency radiation unit 23. Conversely, when the intermediate-frequency module 2 is working, the low-frequency module 3 has no signal input at this time, and the intermediate-frequency dielectric plate 21 and the low-frequency dielectric plate 31 are arranged side by side, and the low-frequency radiation unit 33 located at the back of the low-frequency dielectric plate 31 just serves as a virtual ground for reflecting the intermediate-frequency module 2. The intermediate-frequency antenna signal output by the intermediate-frequency module 2 is reflected and output after being partially enhanced by the low-frequency radiation unit 33. And because the antenna size is inversely proportional to the signal frequency, the volume of the low-frequency module 3 is larger, and the virtual ground area for reflecting the intermediate-frequency antenna signal is larger, so compared with the low-frequency signal, the combined high-gain omnidirectional vertically polarized antenna has a better gain effect on the intermediate-frequency antenna signal, and can also reduce the return loss to a certain extent.

[0041] Secondly, the intermediate-frequency module 2 and the low-frequency module 3 adopt a symmetric dipole design, and a parasitic unit is introduced to achieve the purpose of expanding the frequency bandwidth. And the distance between the low-frequency radiation unit 33 and the corresponding parasitic unit can be adjusted according to actual needs, so as to adjust the coupling strength between them and obtain good impedance matching.

[0042] In addition, the intermediate-frequency module 2 and the low-frequency module 3 are arranged vertically and in parallel above the reflecting plate (13), which is similar to vertically placing one arm of a symmetric oscillator on an infinitely large ideal conductor plane to form a monopole antenna, which has good omnidirectional radiation performance.

[0043] Through the above structural design, the coverage range and strength of the radiation signals generated by the low-frequency and high-frequency modules 1 are enhanced, the frequency bandwidth of the antenna is expanded, high gain is achieved, and good impedance matching is obtained to meet the communication needs of users. Secondly, the intermediate-frequency module 2 and the low-frequency module 3 are arranged vertically and in parallel above the reflecting plate 13 of the high-frequency module 1, which also improves the space utilization rate and reduces the occupied space, so that the combined high-gain omnidirectional vertically polarized antenna requires less space for arrangement and has higher working efficiency.

[0044] In an embodiment of the present application, the frequency bandwidth of the intermediate-frequency module 2 is 1710-2690MHz, and the gain is 2-3.5dBi; the frequency bandwidth of the low-frequency module 3 is 706-960MHz, and the gain is 2-3.5dBi; and the non-circularity of the intermediate-frequency module 2 and the low-frequency module 3 is less than 3dB. As can be seen, by applying the technical solutions of the embodiments of the present application, the impedance frequency bandwidth can be widened, the antenna gain can be greatly improved, and good impedance matching performance can be maintained.

[0045] For the convenience of understanding the performance of the combined high-gain omnidirectional vertical polarization antenna, the following is further explained and described in combination with specific drawings.

[0046] Referring to the high-frequency module 1 in the TM10 mode superposition shown in FIG. 11B, it can be seen that, in the coaxial feeding mode, the TM10 mode of the radiation disc 111 is excited by the TEM mode of the coaxial feeding, and the mode superposition enables wider impedance bandwidth and good impedance matching. Figure 6 Referring to the high-frequency module 1 in the TM10 mode superposition shown in FIG. 11B, it can be seen that, in the coaxial feeding mode, the TM10 mode of the radiation disc 111 is excited by the TEM mode of the coaxial feeding, and the mode superposition enables wider impedance bandwidth and good impedance matching.

[0047] Referring to the high-frequency module 1 in the TM10 mode superposition shown in FIG. 11B, it can be seen that, in the coaxial feeding mode, the TM10 mode of the radiation disc 111 is excited by the TEM mode of the coaxial feeding, and the mode superposition enables wider impedance bandwidth and good impedance matching. Figure 7 Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.3 GHz shown in FIG. 11C, it can be seen that the direction and intensity of the 3.3 GHz radiation signal generated by the high-frequency module 1. Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.8 GHz shown in FIG. 11D, it can be seen that the direction and intensity of the 3.8 GHz radiation signal generated by the high-frequency module 1. Figure 8 Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.3 GHz shown in FIG. 11C, it can be seen that the direction and intensity of the 3.3 GHz radiation signal generated by the high-frequency module 1. Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.8 GHz shown in FIG. 11D, it can be seen that the direction and intensity of the 3.8 GHz radiation signal generated by the high-frequency module 1. Figure 9 Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.3 GHz shown in FIG. 11C, it can be seen that the direction and intensity of the 3.3 GHz radiation signal generated by the high-frequency module 1. Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.8 GHz shown in FIG. 11D, it can be seen that the direction and intensity of the 3.8 GHz radiation signal generated by the high-frequency module 1. Figure 10 Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.3 GHz shown in FIG. 11C, it can be seen that the direction and intensity of the 3.3 GHz radiation signal generated by the high-frequency module 1. Referring to the far-field radiation efficiency parameter diagram of the high-frequency module 1 at 3.8 GHz shown in FIG. 11D, it can be seen that the direction and intensity of the 3.8 GHz radiation signal generated by the high-frequency module 1.

[0048] It can be concluded that the radiation pattern of the high-frequency module 1 at four different frequencies has good omnidirectional type, and the peak gain is mainly concentrated in the theta=30° direction.

[0049] Referring to the return loss parameter diagram of the embodiment of the application shown in FIG. 12, the abscissa corresponds to different signal frequencies, with units of GHz, and the ordinate corresponds to return loss, with units of dB. It can be seen that the return loss measured at the low-frequency module working frequency band 706-960 MHz of the combined high-gain omnidirectional vertical polarization antenna is shown as 1101, the return loss measured at the medium-frequency module working frequency band 1710-2690 MHz is shown as 1102, and the return loss measured at the high-frequency module working frequency band 3300-5000 MHz is shown as 1103. The return loss measured in the three frequency bands is less than -10 dB. Among them, the return loss measured at the medium-frequency module working frequency band is the lowest, and the lowest return loss is -25 dB. Figure 11 Referring to the return loss parameter diagram of the embodiment of the application shown in FIG. 12, the abscissa corresponds to different signal frequencies, with units of GHz, and the ordinate corresponds to return loss, with units of dB. It can be seen that the return loss measured at the low-frequency module working frequency band 706-960 MHz of the combined high-gain omnidirectional vertical polarization antenna is shown as 1101, the return loss measured at the medium-frequency module working frequency band 1710-2690 MHz is shown as 1102, and the return loss measured at the high-frequency module working frequency band 3300-5000 MHz is shown as 1103. The return loss measured in the three frequency bands is less than -10 dB. Among them, the return loss measured at the medium-frequency module working frequency band is the lowest, and the lowest return loss is -25 dB.

[0050] Figure 12 ​The peak gain parameter diagram shown in the embodiment of the application is shown, the abscissa corresponds to different signal frequencies, unit: GHz, the ordinate corresponds to the peak gain, unit: dBi. It can be seen that the peak gain measured at the low frequency module working frequency band 706-960MHz of the combined high gain omnidirectional vertical polarization antenna is shown as 1201, which is 3.69dBi; the peak gain measured at the medium frequency module working frequency band 1710-2690MHz is shown as 1202, which is 7.0dBi; the peak gain measured at the high frequency module working frequency band 3300-5000MHz is shown as 1203, which is 10.25dBi. Among them, the peak gain measured by the high frequency module is the highest, and the gain is greater than 8dBi.

[0051] In summary, the technical scheme of the embodiment of the application can widen the high frequency impedance bandwidth and obtain good impedance matching. The radiation signals generated by each module have high gain, especially, the high frequency module 1 generates omnidirectional peak gain radiation signals with good performance. At the same time, the return loss of the antenna radiation signal can be reduced.

[0052] The above-mentioned embodiments are only the preferred embodiments of the application, and do not limit the application in any form. Any skilled person in the art can make more possible changes and modifications to the application without departing from the scope of the application, or modify the application. Equivalent embodiments. Therefore, any equivalent changes made in accordance with the spirit of the application without departing from the scope of the application shall be covered by the protection scope of the application.

Claims

1. A combined high-gain omnidirectional vertically polarized antenna, characterized in that: The system includes a high-frequency module (1), a medium-frequency module (2), and a low-frequency module (3). The high-frequency module (1) includes a high-frequency radiation component (11) and a reflector (13) arranged in parallel vertically. The absolute height between the high-frequency radiation component (11) and the reflector (13) is less than or equal to a first preset value. The medium-frequency module (2) and the low-frequency module (3) are arranged in parallel vertically above the reflector (13). The medium-frequency module (2) includes a medium-frequency dielectric plate (21), a medium-frequency power supply unit (22) and a medium-frequency radiation unit (23) respectively disposed on the front and back of the medium-frequency dielectric plate (21) and electrically connected to each other. The low-frequency module (3) includes a low-frequency dielectric plate (31), a low-frequency power supply unit (32) and a low-frequency radiation unit (33) respectively disposed on the front and back of the low-frequency dielectric plate (31) and electrically connected to each other. The front of the dielectric plate of the medium-frequency module (2) and the front of the dielectric plate of the low-frequency module (3) are arranged facing each other.

2. The combined high-gain omnidirectional vertically polarized antenna according to claim 1, characterized in that: The high-frequency module (1) also includes a coaxial cable (12). The high-frequency radiation component (11) is formed with through holes for the coaxial cable (12) to pass through. The two ends of the coaxial cable (12) are respectively connected to the high-frequency radiation component (11) and the reflector (13).

3. A combined high-gain omnidirectional vertically polarized antenna according to claim 2, characterized in that: The high-frequency radiation component (11) includes a radiation disc (111), a first radiation ring (112) coaxially arranged around the periphery of the radiation disc (111), a second radiation ring (113) coaxially arranged around the periphery of the first radiation ring (112), and a high-frequency dielectric plate (114). The coaxial cable (12) includes an inner conductor and an outer conductor at both ends. The inner conductor is connected to the radiation disc (111) through a through hole, and the outer conductor is connected to the reflector (13).

4. A combined high-gain omnidirectional vertically polarized antenna according to claim 1, characterized in that, The intermediate frequency dielectric substrate (21) is also provided with an intermediate frequency parasitic unit (24), the intermediate frequency power supply unit (22) is provided with an intermediate frequency power supply point, the intermediate frequency parasitic unit (24) is located on the front side of the intermediate frequency dielectric substrate (21) and adjacent to the intermediate frequency power supply point, and the intermediate frequency parasitic unit (24) includes two parasitic patches composed of a left intermediate frequency parasitic patch (241) and a right intermediate frequency parasitic patch (242).

5. A combined high-gain omnidirectional vertically polarized antenna according to claim 4, characterized in that, The intermediate frequency radiation unit (23) includes two radiation patches consisting of an upper intermediate frequency radiation patch (231) and a lower intermediate frequency radiation patch (232). The intermediate frequency power supply unit (22) adopts a three-arm structure, wherein the upper two arms are inductively connected to the upper intermediate frequency radiation patch (231), the left intermediate frequency parasitic patch (241), and the right intermediate frequency parasitic patch (242), and the lower arm is connected to the lower intermediate frequency radiation patch (232) at the intermediate frequency through hole.

6. A combined high-gain omnidirectional vertically polarized antenna according to claim 1, characterized in that, The low-frequency dielectric substrate (31) is also provided with a low-frequency parasitic unit (34), the low-frequency power supply unit (32) is provided with a low-frequency power supply point, the low-frequency parasitic unit (34) is located on the front side of the low-frequency dielectric substrate (31) and adjacent to the low-frequency power supply point, and the low-frequency parasitic unit (34) includes two parasitic patches composed of a left low-frequency parasitic patch (341) and a right low-frequency parasitic patch (342).

7. A combined high-gain omnidirectional vertically polarized antenna according to claim 6, characterized in that, The low-frequency radiation unit (33) includes two radiation patches consisting of an upper low-frequency radiation patch (331) and a lower low-frequency radiation patch (332). The low-frequency power supply unit (32) adopts a three-arm structure, wherein the upper two arms are inductively connected to the upper low-frequency radiation patch (331), the left low-frequency parasitic patch (341), and the right low-frequency parasitic patch (342), and the lower arm is connected to the lower low-frequency radiation patch (332) at the low-frequency through hole.

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