High-gain antenna for marine networking communication

Abstract

The application discloses a high-gain antenna for offshore networking communication, comprising a radiation unit group, a reflecting unit and a metal support; the radiation unit group comprises two radiation units, each radiation unit comprises two special-shaped non-closed metal rings, and the two free ends of the special-shaped non-closed metal rings are connected to each other through a first metal connecting column; the two radiation units are arranged side by side, so that the four first metal connecting columns are arranged in the same plane and in parallel, and the centers of the four first metal connecting columns are connected through two second metal connecting columns; the radiation unit group and the reflecting unit are connected through the metal support. The high-gain antenna for offshore networking communication disclosed by the application realizes a single-feed port feeding structure, supports high-power output, has high-gain characteristics, and realizes low wind resistance and high stability of the whole antenna through a full-metal three-dimensional linear array structure, and is not afraid of ocean wind and waves.

Description

Technical Field

[0001] This invention relates to the field of radio frequency antenna technology, and in particular to a high-gain antenna for maritime network communication. Background Technology

[0002] Mid-to-low frequency antennas for marine communication are mainly used in long-range marine communication, maritime rescue, and marine monitoring. In the marine environment, due to the influence of the atmosphere, sea waves, and reflections, antennas need to have high gain and directivity to ensure reliable signal transmission and reception.

[0003] Antenna structural design is a key research direction. Commonly used structures include half-wavelength antennas, full-wavelength antennas, and helical antennas. By changing parameters such as antenna length, diameter, and feed point location, different operating characteristics and adaptation to different sea surface environments can be achieved. Some studies have designed antennas with E-type rectangular patch structures to achieve a smaller radiation size [1]. At the same time, multi-antenna systems can also achieve signal enhancement, interference suppression, and other functions through the interaction between antennas and signal processing techniques, thereby improving the reliability and efficiency of sea surface communication. Some studies have designed dipole array antennas to enhance performance and achieved low wind load performance through special grounding structure design [2].

[0004] However, the high temperature, high humidity, and weathering of the marine environment severely affect antenna materials and circuits. Therefore, the selection of antenna materials and protective measures are key research directions. All-metal materials have excellent mechanical and electrical properties, making them suitable for manufacturing high-performance antennas. However, all-metal antennas have some problems, such as narrow frequency response and uneven electromagnetic radiation amplitude [3,4].

[0005] However, existing antennas have the following drawbacks:

[0006] Due to the complexity and instability of the marine environment, the radiation gain of an antenna is easily affected by various factors, such as the interaction between the antenna and the seawater, and interference from sea waves, which can lead to a decrease in radiation gain and affect communication quality. Furthermore, it can also cause structural deformation, damage, and malfunctions of the antenna, affecting its lifespan and stability.

[0007] The E-shaped rectangular patch structure used in Reference 1 and the array design with a shared ground structure used in Reference 2 both make the overall antenna structure complex and require PCB manufacturing, resulting in poor stability and environmental adaptability.

[0008] The all-metal structure designs in References 3 and 4 both rely on the directional element array in the radiation direction to increase the gain, resulting in an excessively large overall end-firing size and low radiation gain and bandwidth.

[0009] Due to the excessively large end-fire size, Reference 3 can only adopt a dual-feed array design with the same radiating elements arranged in parallel in order to improve gain and bandwidth. This limits the transmit power and increases the system complexity.

[0010] 【1】Xi-Wang Dai, Xiao-Yu Zhou, Guo-Qing Luo. Wideband directional antennasystem with different polarizations for wireless communication system. AEU IntJ Electrom Commun 2017; 75.

[0011] 【2】B.Han, Q.Wu, C.Yu, H.Wang, X.Gao and N.Ma, "Ultracompact Dual-PolarizedCross-Dipole Antenna for a 5G Base Station Array With aLow Wind Load," in IEEETransactions on Antennas and Propagation, vol.70, no.10, pp.9315-9325, Oct.2022.

[0012] 【3】"SY4062-SF5SNM(ABK)-Spec-Sheet,"Sinclair Tech.Corp.,Aurora,TO,CAN,Customer Tech Manual 005805,Dec.14,2016,[Online].Available:https: / / cdn.shopify.com / s / files / 1 / 0531 / 8970 / 5898 / t / 7 / assets / SY4062-SF5SNM(ABK)-Spec-Sheet.pdf? v=1616003604.

[0013] 【4】"SY459-SF1SNM(ABK)-Spec-Sheet,"Sinclair Tech.Corp.,Aurora,TO,CAN,Customer Tech Manual 006337,Aug.04,2017,[Online].Available:https: / / cdn.shopify.com / s / files / 1 / 0531 / 8970 / 5898 / t / 7 / assets / SY459-SF1SNM(ABK)-Spec-Sheet.pdf? v=1616003899. Summary of the Invention

[0014] This invention proposes a high-gain antenna for maritime network communication to solve the problems of low output power and low output gain of existing antennas.

[0015] The technical means employed in this invention are as follows:

[0016] A high-gain antenna for maritime network communication includes a radiating element group, a reflecting element, and a metal support.

[0017] The radiation unit group includes two radiation units. Each radiation unit includes two symmetrically arranged irregularly shaped non-closed metal rings. The two free ends of the two irregularly shaped non-closed metal rings are arranged opposite each other and connected to each other by a first metal connecting post. The two irregularly shaped non-closed metal rings and the two first metal connecting posts are connected to each other to form a closed radiation unit.

[0018] The two radiation units are arranged side by side, such that the four first metal connecting posts are located in the same plane and are arranged in parallel. The centers of the two first metal connecting posts located on the inner side are connected by a second metal connecting post; the centers of the two first metal connecting posts located on the outer side are connected by another second metal connecting post.

[0019] The radiating unit group and the reflecting unit are connected by the metal bracket.

[0020] Furthermore, the irregular non-closed metal ring includes a rectangular ring with one end open, formed by three metal pillars, and an open triangular ring formed by two metal pillars respectively connected to the open end of the rectangular ring.

[0021] Furthermore, the length of the second metal connecting post connecting the centers of the two first metal connecting posts located on the inner side is 1 / 2 of the center frequency wavelength of the antenna's operating frequency band.

[0022] Furthermore, the reflecting unit includes eleven metal reflecting pillars arranged side by side, the eleven metal reflecting pillars are not on the same plane, and the distance between the metal reflecting pillars and the plane where the radiating unit group is located is 1 / 8 to 1 / 4 of the center frequency wavelength of the antenna operating frequency band.

[0023] Furthermore, the reflecting unit is a metal reflector, and the distance between the plane where the metal reflector is located and the plane where the radiating unit group is located is 1 / 8 of the center frequency wavelength of the antenna's operating frequency band.

[0024] Furthermore, the length of the metal reflector is 0.9-1.1 times the minimum frequency wavelength of the antenna's operating frequency band.

[0025] Furthermore, the length of the irregularly shaped non-closed metal ring is 1-1.25 times the wavelength of the center frequency of the antenna's operating frequency band.

[0026] Furthermore, it also includes a guide unit, which is located on both sides of the radiation unit group along with the reflection unit. The guide unit includes at least one metal guide post, which is fixed to the metal bracket.

[0027] Furthermore, the length of the metal guide post is 1 / 8 to 1 / 2 of the center frequency wavelength of the antenna's operating frequency band.

[0028] Furthermore, the guide unit has multiple units, which are arranged side by side.

[0029] Compared with existing technologies, the high-gain antenna for maritime network communication disclosed in this invention has the following advantages: The antenna disclosed in this invention has a single-feed port feeding structure, supports high power output, has high gain characteristics, and achieves low wind resistance and high stability of the antenna as a whole through an all-metal three-dimensional linear array structure, which is not afraid of ocean winds and waves. Attached Figure Description

[0030] Figure 1 This is a structural diagram of the first embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0031] Figure 2 This is a top view of the radiating element group in the high-gain antenna for maritime network communication disclosed in this invention;

[0032] Figure 3 This is a front view of the radiating element group in the high-gain antenna for maritime network communication disclosed in this invention.

[0033] Figure 4This is an axial view of the radiating element group in the high-gain antenna for maritime network communication disclosed in this invention;

[0034] Figure 5 This is a front view of the radiative reflection element in the high-gain antenna for maritime network communication disclosed in this invention.

[0035] Figure 6 This is a side view of the radiative reflection element in the high-gain antenna for maritime network communication disclosed in this invention.

[0036] Figure 7 This is an axial view of the radiative reflection element in the high-gain antenna for maritime network communication disclosed in this invention;

[0037] Figure 8 The theoretical current distribution and equivalent diagram of the radiating element;

[0038] Figure 9 The antenna S-parameter diagram of the high-gain antenna for maritime network communication disclosed in this invention is shown.

[0039] Figure 10 This is an antenna gain diagram of the high-gain antenna for maritime network communication disclosed in this invention;

[0040] Figure 11 This invention discloses the antenna E-plane radiation pattern of a high-gain antenna for maritime network communication.

[0041] Figure 12 The antenna H-plane radiation pattern of the high-gain antenna for maritime network communication disclosed in this invention;

[0042] Figure 13 This is a structural diagram of the second embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0043] Figure 14 This is a theoretical model diagram of the E-plane of the high-gain antenna for maritime network communication disclosed in this invention;

[0044] Figure 15 This is a structural diagram of the third embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0045] Figure 16 This is a structural diagram of the fourth embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0046] Figure 17 This is a structural diagram of the fifth embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0047] Figure 18 This is a structural diagram of the sixth embodiment of the high-gain antenna for maritime network communication disclosed in this invention;

[0048] Figure 19 This is a structural diagram of the seventh embodiment of the high-gain antenna for maritime network communication disclosed in this invention.

[0049] In the diagram: 1. Radiation unit group; 10. Radiation unit; 11. Irregularly shaped non-closed metal ring; 12. First metal connecting post; 13. Second metal connecting post;

[0050] 2. Reflecting unit; 20. Metal reflective column; 21. Metal connecting frame; 22. Metal reflective plate;

[0051] 3. Guide unit; 30. Metal guide post;

[0052] 4. Metal bracket. Detailed Implementation

[0053] Example 1

[0054] As shown in Figure 1, the first embodiment of the high-gain antenna for maritime networking communication disclosed in this invention includes a radiating element group 1, a reflecting element 2, and a metal support 4.

[0055] like Figure 2 , Figure 3 and Figure 4 As shown, the radiation unit group 1 includes two radiation units 10. Each radiation unit 10 includes two symmetrically arranged irregularly shaped non-closed metal rings 11. The two free ends of the two irregularly shaped non-closed metal rings 11 are arranged opposite each other and connected to each other by first metal connecting posts 12. The two irregularly shaped non-closed metal rings 11 and the two first metal connecting posts 12 are connected to each other to form a closed radiation unit. In this embodiment, the irregularly shaped non-closed metal ring 11 includes a rectangular ring with one end open, formed by three metal posts 14, and an open triangular ring formed by two metal posts 14 connected to the open end of the rectangular ring. The radiation unit 10 can be formed by bending a single metal rod structure or by welding multiple metal rods sequentially.

[0056] The two radiation units 10 are arranged side by side, so that the four first metal connecting posts 12 are located in the same plane and are arranged in parallel. The centers of the two first metal connecting posts 12 located on the inner side are connected by a second metal connecting post 13; the centers (midpoints) of the two first metal connecting posts 12 located on the outer side are connected by another second metal connecting post 13. In this embodiment, the two second metal connecting posts 13 are located on both sides of the plane where the first metal connecting posts are located, so as to realize the connection of each of the four first metal connecting posts in pairs.

[0057] The radiating unit group 1 and the reflecting unit 2 are connected by the metal bracket 4. In this embodiment, as shown... Figure 5 , Figure 6 and Figure 7 As shown, the reflective unit 2 includes eleven symmetrically arranged metal reflective columns 20, which are connected to each other in sequence by a metal connecting frame 21. The eleven metal reflective columns are not in the same plane. The metal support is a metal plate or metal column structure. One end of the metal support is welded to the metal reflective column, and the other end is welded to the middle position of the side of the irregular non-closed metal ring, so that the radiation unit group and the reflective unit are stacked in vertical space.

[0058] like Figure 8 The diagram shows the equivalent current diagram of the radiating element group in the high-gain antenna for maritime network communication disclosed in this invention. This equivalent current diagram provides a better understanding of the antenna's radiation characteristics: the current distribution of the radiating structure is decomposed into E-plane and H-plane components. The i1 and i4 components on both sides exist only in the E-plane and have the same direction, while the i2 and i5 components exist only in the H-plane. Furthermore, the i2 and i5 components on the same side (upper and lower parts) have opposite directions, and the directions on the left and right sides are also opposite. The i3 and i6 components can be decomposed into components on the E-plane and H-plane, respectively represented by dashed lines i... 3E i 6E and dashed line i 3H i 6H This indicates that after decomposition, the i3 and i6 components are located on both sides of the i... 3E and i 6E They are in the same direction, while i 3H and i 6H These are opposites on the same side (top and bottom) and opposites on both the left and right sides. Therefore, according to the superposition principle, i1 and i 3E The generated electric fields are mutually reinforcing, i2 and i 3H The resulting electric fields cancel each other out. Similarly, we can deduce that i4 and i 6E i5 and i 3H This is also the case. Therefore, the radiating element group is ultimately approximately equivalent to an array of two linear current components in the E-plane and approximately equivalent to an array of three linear current components in the H-plane. The beamwidths in the E and H planes are determined by the positions of these two equivalent point source arrays, respectively. By designing a dual-symmetric, irregularly shaped, non-closed metal ring parallel structure for the radiating element group, a single-feed port feeding structure was achieved, which multiplied the radiating substrate, thereby obtaining high power output and improving the radiation gain, resulting in high-gain characteristics. The all-metal three-dimensional linear array structure achieved low wind resistance and high stability for the entire antenna, making it resistant to ocean waves.

[0059] The high-gain antenna for maritime network communication disclosed in this application achieves a single-feed port feeding structure by connecting the midpoints of the upper and lower sides of any irregularly shaped, non-enclosed metal ring in the radiating element group (the midpoints of the two first metal connecting pillars) via a coaxial line. This characteristic is based on the fact that the two irregularly shaped, non-enclosed metal rings in the radiating element have the same phase. Due to the design of the single-feed port feeding structure, no power divider is needed in the feeding network, it is not limited by high power, and the system complexity is reduced.

[0060] like Figure 9 , Figure 10 , Figure 11 and Figure 12 The diagram shows the antenna S-parameter diagram, antenna gain diagram, antenna E-plane radiation pattern, and antenna H-plane radiation pattern of the high-gain antenna for maritime network communication disclosed in this application. As can be seen from the diagram, the operating frequency band is 600-850MHz, the gain is as high as 13.1dBi, and the radiation direction meets the design requirements.

[0061] Furthermore, the length of the second metal connecting post 13, which connects the center of the two first metal connecting posts 12 located on the inner side, is 1 / 2 of the center frequency wavelength of the antenna operating frequency band. This allows the two radiating elements to have the same current distribution and phase, thereby doubling the overall gain and realizing a single-feed port structure that can support high-power operation.

[0062] Furthermore, the eleven metal reflective pillars are not on the same plane, and the distance between the metal reflective pillars and the plane where the radiating element group is located is 1 / 8 to 1 / 4 of the center frequency wavelength of the antenna operating frequency band. By adjusting the distance of different metal reflective pillars, a low wind resistance structure design can be achieved without reducing the gain.

[0063] Furthermore, the length of the metal reflector 20 is 0.9-1.1 times the minimum frequency wavelength of the antenna's operating frequency band. According to the principle of directional antennas, the best gain can be obtained when the length of the reflector element is 1 times the minimum frequency wavelength. This design adjusts the length of the metal reflector without reducing the gain, thereby achieving lightweight and low wind resistance characteristics of the reflector element.

[0064] Furthermore, the length of the irregularly shaped non-closed metal ring 11 is 1-1.25 times the center frequency wavelength of the antenna's operating frequency band, making the antenna's impedance relatively flat over a wide bandwidth and providing impedance matching characteristics over a wide bandwidth.

[0065] Example 2

[0066] like Figure 13The image shows a second embodiment of the high-gain antenna for maritime network communication disclosed in this invention. The difference between this embodiment and embodiment 1 is that the high-gain antenna for maritime network communication disclosed in this embodiment further includes a guiding unit 3. The guiding unit 3 and the reflecting unit 2 are located on opposite sides of the radiating unit group 1. The guiding unit 3 includes at least one metal guiding post 30, which is fixed to the metal support 4. In this embodiment, as shown... Figure 13 As shown, the guide unit 3 has two sets, and the two sets of guide units are arranged side by side along the length direction of the metal reflective column. Each set of guide units includes 3 metal guide columns.

[0067] The design of the guiding unit effectively ensures the uniformity of the electric field on the E and H surfaces. Figure 14 The theoretical model of the high-gain antenna for maritime network communication disclosed in this application is shown in the E-plane. Based on the equivalent current model, the two radiating elements are represented as two linear currents. The guiding element is located directly above the two linear currents. The reflecting element is assumed to be an infinitely large plane, located directly below the two linear currents. According to the mirror principle, the virtual mirror sources of the radiating and guiding elements are symmetrically distributed about the reflecting element, as shown by the lower half of the dashed line in the figure. Where h... w h is the distance from the radiating element to the reflecting element. d Let φ be the distance from the guiding element to the radiating element, l be the distance from the center of the equivalent point source to the z-axis, and φ be the radiation direction rotating clockwise from the z-axis. According to this theoretical model, the electric field of the antenna in the E-plane is:

[0068]

[0069] Among them, the phase of the radiating unit Guide unit phase Center offset phase ψ l = 2×π×l×sinφ / λ, canceling phase ψ dir =2×π×h d / λ. These phases can be obtained from the equivalent source locations in the diagram and image theory. In the formula, A1 and A2 are the current amplitudes of the radiating and guiding elements, respectively, and j is the imaginary unit. The theoretical model of this high-gain antenna for maritime network communication in the H-plane is an equivalent point source array with three line currents and three guiding elements. Under the assumption of infinitely large reflecting elements, the theoretical electric field in each radiation direction can also be obtained according to image theory. According to directional antenna theory, the 3-dB beamwidth φ in the E-plane and H-plane... E and φ H The theoretical gain is calculated using the following formula:

[0070]

[0071] Therefore, due to the structural design of the guiding unit, radiating unit, and reflecting unit, the beamwidth of the antenna in the E-plane and H-plane is small, and the gain calculated according to the gain formula is large, so the antenna as a whole has a high radiation gain.

[0072] The high-gain antenna for maritime network communication disclosed in this invention incorporates a guiding unit composed of metal guide pillars. This guiding unit, combined with a design of unequal-spacing, unequal-length metal rod reflectors, effectively eliminates the back lobe of the antenna pattern while enhancing signal sensitivity, resulting in stronger directivity and higher gain. Furthermore, the all-metal linear array structure allows it to withstand higher power output and possesses lightning strike resistance, corrosion resistance, stronger structural stability, and lower wind resistance.

[0073] Furthermore, the length of the metal guide post 30 is 1 / 8 to 1 / 2 of the center frequency wavelength of the antenna's operating frequency band, which has good current diversion efficiency and makes the electric field distribution of the antenna more uniform in the operating frequency band, thereby achieving the highest gain in the frequency band.

[0074] Example 3

[0075] like Figure 15 The image shows a third embodiment of the high-gain antenna for maritime network communication disclosed in this invention. This embodiment differs from embodiment 2 in that, in embodiment 2, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector. In this embodiment, the guiding unit 3 has only one set, connected at the middle position of the metal reflector. The high-gain antenna for maritime network communication disclosed in this embodiment has advantages such as reduced overall weight, improved structural stability, and reduced cost.

[0076] Example 4

[0077] like Figure 16 The image shows a fourth embodiment of the high-gain antenna for maritime network communication disclosed in this invention. This embodiment differs from embodiment 2 in that, in embodiment 2, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector, and each set includes three guide posts. In this embodiment, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector, and each set includes two guide posts. The high-gain antenna for maritime network communication disclosed in this embodiment also has advantages such as reduced overall weight and lower cost.

[0078] Example 5

[0079] like Figure 17The image shows a fifth embodiment of the high-gain antenna for maritime network communication disclosed in this invention. This embodiment differs from embodiment 2 in that, in embodiment 2, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector, and each set includes three guide posts. In this embodiment, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector, and each set includes one guide post. The high-gain antenna for maritime network communication disclosed in this embodiment also has advantages such as reduced overall weight and lower cost.

[0080] Example 6

[0081] like Figure 18 The image shows a sixth embodiment of the high-gain antenna for maritime network communication disclosed in this invention. This embodiment differs from embodiment 2 in that, in embodiment 2, the guiding unit 3 has two sets, arranged side-by-side along the length of the metal reflector, and each set includes three guide posts. In this embodiment, the guiding unit 3 has three sets, arranged side-by-side along the length of the metal reflector, and each set includes three guide posts. The high-gain antenna for maritime network communication disclosed in this embodiment has advantages such as improved gain within the frequency band.

[0082] Example 7

[0083] like Figure 19 The illustration shows a seventh embodiment of the high-gain antenna for maritime network communication disclosed in this invention. This embodiment differs from Embodiment 2 in that, in Embodiment 2, the reflecting element includes eleven metal reflecting pillars 20, and these pillars are not on the same plane. In this embodiment, the reflecting element is a metal reflecting plate 22, and the distance between the plane containing the metal reflecting plate and the plane containing the radiating element group is 1 / 8 of the center frequency wavelength of the antenna's operating frequency band. The high-gain antenna for maritime network communication disclosed in this embodiment has advantages such as reducing the antenna end-fire size and increasing structural stability.

[0084] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-gain antenna for maritime network communication, characterized in that: Includes radiating unit groups, reflecting units, and metal supports; The radiation unit group includes two radiation units. Each radiation unit includes two symmetrically arranged irregularly shaped non-closed metal rings. The two free ends of the two irregularly shaped non-closed metal rings are arranged opposite each other and connected to each other by a first metal connecting post. The two irregularly shaped non-closed metal rings and the two first metal connecting posts are connected to each other to form a closed radiation unit. The two radiation units are arranged side by side, such that the four first metal connecting posts are located in the same plane and are arranged in parallel. The centers of the two first metal connecting posts located on the inner side are connected by a second metal connecting post; the centers of the two first metal connecting posts located on the outer side are connected by another second metal connecting post. The radiating unit group and the reflecting unit are connected by the metal bracket; The irregular non-closed metal ring includes a rectangular ring with one end open, formed by three metal pillars, and an open triangular ring formed by two metal pillars connected to the open end of the rectangular ring respectively. The length of the second metal connecting post, which connects the centers of the two first metal connecting posts located on the inner side, is 1 / 2 of the center frequency wavelength of the antenna's operating frequency band.

2. The high-gain antenna for maritime network communication according to claim 1, characterized in that: The reflecting unit includes eleven metal reflecting pillars arranged side by side. The eleven metal reflecting pillars are not on the same plane, and the distance between the metal reflecting pillars and the plane where the radiating unit group is located is 1 / 8 to 1 / 4 of the center frequency wavelength of the antenna operating frequency band.

3. The high-gain antenna for maritime network communication according to claim 1, characterized in that: The reflecting unit is a metal reflector, and the distance between the plane where the metal reflector is located and the plane where the radiating unit group is located is 1 / 8 of the center frequency wavelength of the antenna's operating frequency band.

4. The high-gain antenna for maritime network communication according to claim 2, characterized in that: The length of the metal reflector is 0.9-1.1 times the minimum frequency wavelength of the antenna's operating frequency band.

5. The high-gain antenna for maritime network communication according to claim 4, characterized in that: The length of the irregularly shaped, non-closed metal ring is 1 to 1.25 times the wavelength of the center frequency of the antenna's operating frequency band.

6. The high-gain antenna for maritime network communication according to claim 1, characterized in that: It also includes a guide unit, which is located on both sides of the radiation unit group along with the reflection unit. The guide unit includes at least one metal guide post, which is fixed to the metal bracket.

7. The high-gain antenna for maritime network communication according to claim 6, characterized in that: The length of the metal guide post is 1 / 8 to 1 / 2 of the center frequency wavelength of the antenna's operating frequency band.

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