X-band dual-polarized horn antenna

Abstract

The utility model relates to the technical field of satellite communication, in particular to an X-band dual-polarized horn antenna, which comprises a mounting seat, a horn antenna, an X-band dual-polarized horn antenna, an X-band dual-polarized horn antenna, an X-band dual-polarized horn antenna and an X-band dual-polarized horn antenna, the waveguide is fixedly arranged at one end of the mounting seat, and radio frequency signal plug connectors are arranged on the two opposite sides of the waveguide respectively; and the horn radiator is fixedly arranged at one end, far away from the mounting seat, of the waveguide. The standing-wave ratio of the X-band dual-polarized horn antenna is smaller than 1.5, the peak gain is larger than 19dBi, the antenna gain in the range of + / -5 degrees is larger than 18dBi, the antenna axial ratio in the range of + / -40 degrees is smaller than 5dB, and a dual-channel scheme is adopted, so that the data transmission speed of a satellite reaches 1.8 Gbbs, and the huge data transmission requirement during transit of the satellite is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to satellite communication technical field, concretely relates to a kind of X frequency band dual polarized horn antenna. BACKGROUND

[0002] Satellite transit time is generally about 10 minutes, in this limited time, satellite communication sub-system will be as high as several G payload data download, and the transmission speed of traditional single-channel satellite antenna is currently 900Mbps, it is difficult to ensure that a large amount of data is transmitted in 10 minutes, so it is necessary to improve the existing antenna design. UTILITY MODEL CONTENT

[0003] The utility model provides a kind of X frequency band dual polarized horn antenna, since adopting double-channel scheme, thus the data transmission speed of satellite reaches 1.8Gbbs, to meet the huge data transmission demand when satellite transit.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of X frequency band dual polarized horn antenna, it includes: mounting seat, the mounting seat edge is distributed with a plurality of mounting holes;Waveguide, the waveguide is fixedly arranged at one end of the mounting seat, and the opposite sides of the waveguide are respectively provided with radio frequency signal plug-in component;Horn radiator, the horn radiator is fixedly arranged at the end of the waveguide away from the mounting seat.

[0005] Preferably, the two radio frequency signal plug-in components are respectively left-handed radio frequency signal interface and right-handed radio frequency signal interface.

[0006] Preferably, the free end of the horn radiator is 213 millimeters away from the mounting surface of the mounting seat, and the center of mass is 125.93 millimeters away from the mounting surface of the mounting seat.

[0007] Preferably, the radio frequency microwave signal operating frequency connected between the two sides of the waveguide is 8100MHz to 8300MHz;Matching impedance is 50 ohms;Standing wave is not more than 2.0.

[0008] Preferably, the waveguide is provided with first flange at both ends, and the waveguide is fixedly connected with the first flange by bolt penetrating the mounting seat.

[0009] Preferably, one end of the horn radiator is provided with second flange, and the first flange is fixedly connected by bolt penetrating the second flange.

[0010] The utility model has the advantages that the standing wave ratio of the X-band dual-polarized horn antenna is less than 1.5, the peak gain is greater than 19dBi, the antenna gain in the range of ±5 degrees is greater than 18dBi, the antenna axial ratio in the range of ±40 degrees is less than 5dB, and the double-channel scheme is also adopted, so that the data transmission speed of the satellite reaches 1.8Gbbs, thereby meeting the huge data transmission demand when the satellite passes through. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0012] Figure 1 Antenna right-hand standing wave test result;

[0013] Figure 2 Antenna left-hand standing wave test result;

[0014] Figure 3 Antenna right-hand gain test result (8100MHz);

[0015] Figure 4 Antenna left-hand gain test result (8100MHz);

[0016] Figure 5 Antenna right-hand gain test result (8200MHz);

[0017] Figure 6 Antenna left-hand gain test result (8200MHz);

[0018] Figure 7 Antenna right-hand gain test result (8300MHz);

[0019] Figure 8 Antenna left-hand gain test result (8300MHz);

[0020] Figure 9 Antenna right-hand axial ratio test result (8100MHz);

[0021] Figure 10 Antenna left-hand axial ratio test result (8100MHz);

[0022] Figure 11 Antenna right-hand axial ratio test result (8200MHz);

[0023] Figure 12 Antenna left-hand axial ratio test result (8200MHz);

[0024] Figure 13 Antenna right-hand rotation ratio test results (8300MHz);

[0025] Figure 14 Antenna left-hand rotation ratio test results (8300MHz);

[0026] Figure 15 Side view of an X-band dual-polarized horn antenna;

[0027] Figure 16 This is a schematic diagram of the mounting surface of an X-band dual-polarized horn antenna.

[0028] In the diagram: 1. Mounting base; 2. Mounting hole; 3. Waveguide; 4. RF signal connector; 5. Speaker radiator; 6. First flange; 7. Second flange. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] like Figure 15 , Figure 16 As shown, an X-band dual-polarized horn antenna includes: a mounting base 1 with multiple mounting holes 2 distributed along its edge; a waveguide 3 fixedly disposed at one end of the mounting base 1, with radio frequency signal connectors 4 on opposite sides of the waveguide 3; and a horn radiator 5 fixedly disposed at the end of the waveguide 3 away from the mounting base 1. The two radio frequency signal connectors 4 are a left-handed and a right-handed radio frequency signal interface, respectively. Furthermore, the operating frequency of the radio frequency microwave signal connecting the two sides of the waveguide 3 is 8100 MHz to 8300 MHz; the matching impedance is 50 ohms; and the standing wave ratio is no greater than 2.0.

[0031] Based on the above structure, the X-band dual-polarized horn antenna is tested as follows. Since its polarization, gain, and radiation pattern are all related to the antenna's radiation characteristics, these parameters can be tested within the testing system. The test procedures include:

[0032] 1. Install a standard gain horn antenna of the corresponding frequency on the test turntable, and use a level to adjust the horn aperture to a horizontal state;

[0033] 2. Measurement of standard gain horn antenna: Rotate the measurement turntable, and the data acquisition system will automatically collect measurement data: Theta: -180~+180°, phi: 0-180°. Every 0.5°, the measurement data will be saved and generated into a file for later processing.

[0034] 3. After measuring the standard gain horn, remove it, install the antenna under test onto the measuring turntable, and level the antenna aperture.

[0035] 4. After measurement, remove the antenna and process the data. Import the test data of the standard horn and the test data of the antenna under test into the test software to obtain the beam test data of the antenna under test.

[0036] according to Figure 1 , Figure 2 As shown, the microwave anechoic chamber test shows that the VSWR of the X-horn antenna is less than 1.5, which meets the requirements. Figures 3 to 8 The radiation pattern of the X-horn antenna was obtained by testing in a microwave anechoic chamber. It can be seen from the figure that the peak gain of the X-horn antenna is greater than 19 dBi, and the antenna gain is greater than 18 dBi within ±5 degrees, which meets the requirements. Figures 9 to 14 The figure shows the axial ratio of the X-horn antenna obtained from testing in a microwave anechoic chamber. As can be seen from the figure, the axial ratio of the X-horn antenna is less than 5dB within a range of ±40 degrees. Furthermore, a dual-channel scheme is adopted, which enables the satellite's data transmission speed to reach 1.8Gbbs, thereby meeting the massive data transmission requirements during satellite overpasses.

[0037] In summary, the test results of the X-band dual-polarized horn antenna are shown in the table below:

[0038]

[0039] In the implementation scheme of the overall antenna structure, the waveguide 3 is provided with first flanges 6 at both ends, and the waveguide 3 is fixedly connected to the first flanges 6 by bolts passing through the mounting base 1. One end of the horn radiator 5 is provided with a second flange 7, and is fixedly connected to the first flange 6 by bolts passing through the second flange 7. Furthermore, the free end of the horn radiator 5 is 213 mm away from the mounting surface of the mounting base 1, the centroid is 125.93 mm away from the mounting surface of the mounting base 1, and the opening of the horn radiator 5 is 147.22 mm.

[0040] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An X-band dual-polarized horn antenna, characterized in that, include: Mounting base (1), the mounting base (1) has multiple mounting holes (2) distributed on its edge; Waveguide (3), the waveguide (3) is fixedly disposed at one end of the mounting base (1), and radio frequency signal connectors (4) are respectively provided on both sides of the waveguide (3). A horn radiator (5) is fixedly disposed at one end of the waveguide (3) away from the mounting base (1).

2. The X-band dual-polarized horn antenna according to claim 1, characterized in that: The two radio frequency signal connectors (4) are a left-handed radio frequency signal interface and a right-handed radio frequency signal interface, respectively.

3. The X-band dual-polarized horn antenna according to claim 2, characterized in that: The free end of the horn radiator (5) is 213 mm away from the mounting surface of the mounting base (1), and the center of mass is 125.93 mm away from the mounting surface of the mounting base (1).

4. The X-band dual-polarized horn antenna according to claim 1, characterized in that: The operating frequency of the radio frequency microwave signal connecting both sides of the waveguide (3) is 8100 MHz to 8300 MHz; the matching impedance is 50 ohms; and the standing wave ratio is no greater than 2.

0.

5. The X-band dual-polarized horn antenna according to claim 1, characterized in that: The waveguide (3) has a first flange (6) at each end, and the waveguide (3) is fixedly connected to the first flange (6) by bolts passing through the mounting base (1).

6. The X-band dual-polarized horn antenna according to claim 5, characterized in that: One end of the horn radiator (5) is provided with a second flange (7), and is fixedly connected to the first flange (6) by bolts passing through the second flange (7).

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