An inner lead dissipating circular phased array antenna structure

Abstract

The application provides an inner guide heat dissipation circular phased array antenna structure, which comprises a radome, an inner cylinder frame, a ventilation base, a fan, an antenna unit module and an L-shaped heat conduction plate. The radome and the inner cylinder frame form a sealed cabin. The inner antenna unit module is installed on the inner cylinder frame through the L-shaped heat conduction plate, heat generated by the antenna unit module is conducted to the inner cylinder frame heat dissipation fins, and then the heat of the inner cylinder frame heat dissipation fins is discharged by using the fan to generate forced air convection. Through the sealed design of the antenna cabin, the environmental adaptability of the antenna unit module is improved, meanwhile, the inner columnar space of the antenna is used as a heat exchange area, the antenna structure and heat dissipation are integrated, the size of the antenna is compressed, and the weight of the antenna is reduced.

Description

Technical Field

[0001] This invention relates to a phased array antenna structure, particularly a circular phased array antenna. Background Technology

[0002] The emergence of phased array antenna technology, due to its fast scanning and flexible beamforming, has led to its widespread development and application in the antenna field. Currently, most commonly used phased array antennas are planar. To achieve omnidirectional scanning in planar phased array antenna systems, the only solutions are: 1. Adding planar phased array antennas in other directions (common four-sided and three-sided array systems); 2. Adding a mechanical scanning device (rotating phased array systems). However, these two methods increase the complexity of the antenna system and also increase the demands on power consumption and heat dissipation. Patent 1 (Cylindrical Integrated Active Phased Array Antenna CN201510872922.6) proposes a theoretical model of a cylindrical phased array. It uses 96 parallel linear radiating arrays to form a cylindrical array surface, controlling the amplitude and phase of the components within ±1.875° to achieve two-dimensional scanning of elevation and azimuth. By using 96 T / R components and 96 linear radiating arrays to form an omnidirectional beam, it solves the problem of omnidirectional scanning in planar phased array antennas. The patent proposes a theoretical model for a circular phased array antenna, but does not provide any structural design solutions.

[0003] Patent 2 (An Active Phased Array Antenna CN202011400863.X) proposes a specific structural form of a cylindrical phased array, including an antenna base, an upper cover, a lower cover, and an antenna frame, which is a hollow cylindrical structure housed within the lower cover. Multiple T / R modules are arrayed on the antenna frame. A power supply heat dissipation chamber is located on the antenna base, and a signal processing unit is located within the upper cover and supported by a support structure on top of the frequency synthesizer heat dissipation chamber. Multiple fans are located above the signal processing unit. The airflow channel formed by the gaps between the heat sinks of the T / R modules and the heat sinks of the power consumption component heat dissipation chamber achieves an integrated design of antenna structure and heat dissipation function. However, in this patent, the antenna is directly connected to the outside environment, which is not conducive to use in humid or salt spray environments. Furthermore, the large internal hollow cylindrical airflow channel results in low overall space utilization and a large volume. Summary of the Invention

[0004] The purpose of this invention is to provide an internally conductive heat dissipation circular phased array antenna structure, which solves the heat dissipation problem of circular phased array antennas in a sealed state, as well as the problem of antenna structure and heat dissipation integration design.

[0005] To achieve the above objectives, the technical solution adopted by the present invention includes:

[0006] A circular phased array antenna with internal heat dissipation comprises, from bottom to top, a ventilation base, a fan, an inner cylindrical frame, an antenna unit module, an L-shaped heat-conducting plate, and an antenna radome. The radome and the inner cylindrical frame form a sealed chamber, which is mounted on the ventilation base. The fan is mounted below the inner cylindrical frame. The antenna unit module is mounted on the inner cylindrical frame via the L-shaped heat-conducting plate, which conducts the generated heat to the heat sink of the inner cylindrical frame. The fan then generates forced air convection to expel the heat from the heat sink of the inner cylindrical frame.

[0007] Preferably, the inner cylinder frame is a cylindrical structure, the outer surface of the inner cylinder frame is a plane for mounting the antenna unit module, the cross-section is polygonal and the plane has mounting holes; the inner cylinder frame is a hollow cylindrical structure, and the inner surface is provided with radial heat sinks, the heat sinks are arranged in a direction parallel to the airflow direction.

[0008] Preferably, the long side of the L-shaped heat-conducting plate is a plate-shaped structure that matches the antenna unit module, and the short side is the contact surface with the inner cylinder frame. After the antenna unit module is attached to the heat-conducting material, it conducts heat to the inner cylinder frame by tightly attaching to the plate.

[0009] Preferably, the ventilation base has strip-shaped ventilation holes arranged in an array on the cylindrical surface for airflow.

[0010] This invention proposes a structure for an internally heat-dissipating circular phased array antenna. A thermally conductive L-shaped heat-conducting plate (heat spreader) transfers the heat generated by the antenna unit modules to heat sinks installed in the inner cylindrical frame. A fan and heat sinks, in contact with the external environment, dissipate the heat. The sealed cabin design improves the environmental adaptability of the antenna unit modules. Simultaneously, utilizing the internal cylindrical space of the antenna as a heat exchange zone achieves integrated antenna structure and heat dissipation design, compressing the antenna's external dimensions and reducing its weight. Attached Figure Description

[0011] Figure 1 Diagram of the internal structure of the antenna

[0012] Figure 2 Cross-sectional view of the antenna installation location

[0013] Figure 3 The antenna unit module is connected in an L-shaped heat-conducting plate configuration.

[0014] Figure 4 inner tube frame structure diagram

[0015] In the diagram: 01. Antenna radome, 02. L-shaped heat-conducting plate, 03. Antenna unit module, 04. Inner cylinder frame, 05. Fan, 06. Ventilation base, 041. Upper flange of inner cylinder frame, 042. Lower flange of inner cylinder frame, 043. Mounting plane of inner cylinder frame, 044. Heat sink of inner cylinder frame. Detailed Implementation

[0016] The technical solution of the present invention will be further explained below with reference to the accompanying drawings and preferred embodiments.

[0017] This invention provides an internally conductive heat dissipation circular phased array antenna structure, a preferred embodiment of which is as follows: Figure 1 As shown, the antenna consists of six parts: radome 01, L-shaped heat-conducting plate 02, antenna unit module 03, inner cylinder frame 04, fan 05, and ventilation base 06. The outer surface of radome 01 is a thin-walled cylindrical body with no bottom surface and openings on the top surface. Figure 4 As shown, flanges 041 and 042 are provided on the upper and lower parts of the inner cylinder frame 04. Figure 1 The central part connects with the cylindrical radome 01 to form a sealed chamber. (Example) Figure 3 As shown, the L-shaped heat-conducting plate 02 is conformally designed with the heat dissipation devices on the antenna unit module 03, providing excellent thermal conductivity. After the antenna unit module 03 and the L-shaped heat-conducting plate 02 are bonded together with thermally conductive material and connected, the L-shaped heat-conducting plate 02 is then bonded to the inner cylinder frame mounting plane 043 with thermally conductive material and connected. The radial cross-section of the inner cylinder frame mounting plane 043 is polygonal, and several antenna unit modules 03 and L-shaped heat-conducting plates 02 are bonded and mounted on the inner cylinder frame mounting plane 043 to form a circular antenna array. The fan 05 is installed on the lower surface of the inner cylinder frame flange 042, providing power for the airflow movement on the surface of the inner cylinder frame heat sink 044. The inner cylinder frame flange 042 is connected to the ventilation base 06, supporting the sealed chamber. The elongated through-holes on the annular surface of the ventilation base 06 serve as the air inlets for the inner cylinder frame heat sink 044.

[0018] With the antenna compartment sealed, heat from the heat-generating components is conducted through structural components to heat sinks that are in direct contact with the external circulation, where forced convection generated by a fan removes the heat. Inside the sealed compartment, the antenna unit module 03 conducts heat to the inner cylindrical frame 04 via an L-shaped heat-conducting plate 02 connected to it. The L-shaped heat-conducting plate 02 serves as both the mounting structure for the antenna unit module 03 and a heat spreader.

Claims

1. An internally guided heat dissipating circular phased array antenna structure, characterized by: The device includes a ventilation base, an inner cylindrical frame, a fan, an antenna unit module, an L-shaped heat-conducting plate, and an antenna cover. The outer surface of the inner cylindrical frame is a plane for mounting the antenna unit module, with a polygonal cross-section and mounting holes on the plane. The inner cylindrical frame is a hollow cylindrical structure with radially arranged heat sinks on its inner surface, parallel to the airflow direction. The long side of the L-shaped heat-conducting plate is a plate-like structure matching the antenna unit module, and the short side is the contact surface with the inner cylindrical frame. The ventilation base, inner cylindrical frame, and fan are installed from bottom to top. The antenna cover and inner cylindrical frame form a sealed chamber, which is mounted on the ventilation base, and the fan is installed below the inner cylindrical frame. The antenna unit module is mounted on the inner cylindrical frame via the L-shaped heat-conducting plate, transferring the generated heat to the heat sinks of the inner cylindrical frame. The fan then generates forced air convection to expel the heat from the heat sinks of the inner cylindrical frame.

2. The inner guided heat dissipation circular phased array antenna structure according to claim 1, characterized in that: The ventilation base has strip-shaped ventilation holes arranged in an array on a cylindrical surface for airflow.

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