A feed source fast switching device

Abstract

The present invention discloses a fast feed switching device, relating to the field of wireless communication technology. The present invention comprises a drive device, a first feed source, a second feed source, a third feed source, and an orthogonal mirror assembly. The orthogonal mirror assembly, driven by the drive device, moves in a straight line at a 45-degree angle to the horizontal plane. The first feed source, the second feed source, and the third feed source are located directly below, to the left, and to the right of the drive device, respectively. The orthogonal mirror assembly comprises a first mirror surface and a second mirror surface. The first mirror surface is connected parallel to the drive device, and the second mirror surface is perpendicular to the first mirror surface. The three feed sources are switched while the orthogonal mirror assembly follows the movement of the drive device. The present invention enables the rapid switching of three broadband signals, which is an important development direction for achieving rapid feed switching in future large-aperture radio astronomy and deep space exploration antennas, and has broad application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a feed source fast switching device. Background Art

[0002] Large-aperture deep space exploration and radio astronomy antennas mainly operate within ultra-wide frequency bands, and often require integrating multiple feed sources into one antenna for automatic switching to meet broadband frequency transmission and reception tasks.

[0003] Existing multi-frequency feed switching technologies are primarily divided into two categories, depending on whether the relative position of the feed source within the antenna reflector changes. One type employs a "rotational" or "pendulum" motion of multiple feed sources to switch feeds when the feed source position changes. For example, the invention patent "One-Dimensional Pendulum Feed Switching Mechanism" (Publication No.: CN107565217A) proposes a pendulum-like feed switching mechanism that uses a one-dimensional rotational motion to switch between multiple feed sources. The invention patent "A Rotary Feed Switching Mechanism" (Publication No.: CN115528425A) proposes a highly efficient and fast rotary feed switching mechanism that allows multiple feed sources to be installed simultaneously on a single antenna. This method is primarily used in antennas with simple, compact multi-feed network structures and no feed switching time requirements.

[0004] For large deep space exploration antennas, the placement of the feed and RF front end is very important. When the feed network is too large to accommodate its own position switching, a beam waveguide method is required. Therefore, another type of multi-frequency feed switching technology is to arrange lenses or reflectors in a certain combination to realize a waveguide structure, effectively transmitting the energy emitted by feeds at different positions to the focus of the reflective antenna, thereby making the placement of the feed no longer restricted by the focus position of the antenna. In the prior art, when multiple feeds need to work in a time-sharing manner, a rotating lens or reflector is usually used to achieve this, but the rotation timeliness of this method is not high and is relatively time-consuming. Summary of the Invention

[0005] In view of this, the present invention proposes a feed source fast switching device, which can realize the fast switching and receiving of three wide-band signals.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A feed source fast switching device, characterized in that it includes a driving device 3, a first feed source 4, a second feed source 5, a third feed source 6 and an orthogonal mirror group 2; the orthogonal mirror group 2 is driven by the driving device 3 to move on a straight line at an angle of 45 degrees to the horizontal plane, the first feed source 4 is located directly below the driving device 3 and the radiation direction is upward, the second feed source 5 is located on the left side of the driving device 3 and the radiation direction is right, the third feed source 6 is located on the right side of the driving device 3 and the radiation direction is left, the orthogonal mirror group 2 includes a first mirror surface 2-1 and a second mirror surface 2-2; the first mirror surface 2-1 and the third feed source 6 are located on the right side of the driving device 3 and the radiation direction is left, and the orthogonal mirror group 2 includes a first mirror surface 2-1 and a second mirror surface 2-2; The horizontal plane forms an angle of 45 degrees, and the second mirror 2-2 is perpendicular to the first mirror 2-1; when the orthogonal mirror group 2 is in the first position, there is no obstruction above the first feed source 4; when the orthogonal mirror group 2 is in the second position, the second mirror 2-2 reflects the signal of the second feed source 5; when the orthogonal mirror group 2 is in the third position, the first mirror 2-1 reflects the signal of the third feed source 6; the beam positions of the feed beam emitted by the first feed source 4, the feed beam of the second feed source 5 after being reflected by the second mirror 2-2, and the feed beam of the third feed source 6 after being reflected by the first mirror 2-1 are consistent.

[0008] Furthermore, the driving device 3 includes two side-by-side transmission belts 3-1, a driving motor 3-2 and a one-to-two coupling 3-3. The driving motor 3-2 drives the one-to-two coupling 3-3 to drive the rotation of the transmission belt 3-1, thereby realizing the orthogonal mirror group 2 to move in a straight line at an angle of 45 degrees to the horizontal plane.

[0009] Furthermore, an isosceles right triangle bracket 1 is provided under each of the two transmission belts 3 - 1 , a fixing rod is provided between the two isosceles right triangle brackets 1 , and the transmission shaft of the transmission belt 3 - 1 is located on the hypotenuse of the isosceles right triangle bracket 1 .

[0010] Furthermore, the back of the first mirror 2-1 is connected to the transmission belt 3-1 through a fixed block 3-4, the second mirror 2-2 is perpendicular to the first mirror 2-1, and the back of the first mirror 2-1 and the back of the second mirror 2-2 are connected through a fixed rod 2-3.

[0011] Due to the adoption of the above solution, the present invention has the following beneficial effects compared with the background technology:

[0012] 1. The present invention can realize the rapid switching of three broadband signals for transmission and reception through the rapid movement of the orthogonal mirror group on the conveyor belt, and the switching speed can be reduced to less than 1 second.

[0013] 2. The present invention integrates the feed switching device into a group of small structures, which greatly saves the limited internal space of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of a feed beam emitted by a first feed source in an embodiment of the present invention.

[0015] Figure 2 Schematic diagram of the feed beam of the second feed source after being reflected by the second mirror in an embodiment of the present invention.

[0016] Figure 3 Schematic diagram of the feed beam of the third feed source after being reflected by the first mirror in an embodiment of the present invention.

[0017] Figure 4 Schematic diagram of the structure of the orthogonal mirror assembly in an embodiment of the present invention.

[0018] Figure 5 Schematic diagram of the driving device structure in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0020] like Figure 1 As shown, a feed source fast switching device is characterized in that it includes a driving device 3, a first feed source 4, a second feed source 5, a third feed source 6 and an orthogonal mirror group 2; the orthogonal mirror group 2 is driven by the driving device 3 to move on a straight line at an angle of 45 degrees to the horizontal plane, the first feed source 4 is located directly below the driving device 3 and the radiation direction is upward, the second feed source 5 is located on the left side of the driving device 3 and the radiation direction is right, the third feed source 6 is located on the right side of the driving device 3 and the radiation direction is left, and the orthogonal mirror group 2 includes a first mirror surface 2-1 and a second mirror surface 2-2; the first mirror surface 2-1 forms an angle of 45 degrees with the horizontal plane, and the second mirror surface 2-2 is perpendicular to the first mirror surface 2-1; when the orthogonal mirror group 2 is in the first position, there is no obstruction above the first feed source 4; as shown in FIG. Figure 2 As shown, when the orthogonal mirror assembly 2 is located at the second position, the second mirror 2-2 reflects the signal of the second feed source 5; Figure 3 As shown, when the orthogonal mirror assembly 2 is located in the third position, the first mirror 2-1 reflects the signal of the third feed source 6; the beam positions of the feed beam emitted by the first feed source 4, the feed beam of the second feed source 5 after being reflected by the second mirror 2-2, and the feed beam of the third feed source 6 after being reflected by the first mirror 2-1 are consistent.

[0021] Furthermore, if Figure 5 As shown, the driving device 3 includes two side-by-side transmission belts 3-1, a driving motor 3-2 and a one-to-two coupling 3-3. The driving motor 3-2 drives the one-to-two coupling 3-3 to drive the rotation of the transmission belt 3-1, thereby realizing the orthogonal mirror group 2 to move in a straight line at an angle of 45 degrees to the horizontal plane.

[0022] Furthermore, an isosceles right triangle bracket 1 is provided under each of the two transmission belts 3 - 1 , a fixing rod is provided between the two isosceles right triangle brackets 1 , and the transmission shaft of the transmission belt 3 - 1 is located on the hypotenuse of the isosceles right triangle bracket 1 .

[0023] Furthermore, if Figure 4 As shown, the back of the first mirror 2-1 is connected to the transmission belt 3-1 through a fixed block 3-4, the second mirror 2-2 is perpendicular to the first mirror 2-1, and the back of the first mirror 2-1 and the back of the second mirror 2-2 are connected through a fixed rod 2-3.

[0024] In summary, the present invention can achieve rapid switching of the transmission and reception of three broadband signals by moving the orthogonal mirror group on the conveyor belt, and the switching speed can be reduced to less than 1 second.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention defined by the appended claims should be included in the scope of protection of the present invention.

Claims

1. A feed source fast switching device, characterized in that: The invention comprises a driving device (3), a first feed source (4), a second feed source (5), a third feed source (6) and an orthogonal mirror group (2); the orthogonal mirror group (2) moves on a straight line at an angle of 45 degrees to the horizontal plane under the drive of the driving device (3); the first feed source (4) is located directly below the driving device (3) and its radiation direction is upward; the second feed source (5) is located on the left side of the driving device (3) and its radiation direction is right; the third feed source (6) is located on the right side of the driving device (3) and its radiation direction is left; the orthogonal mirror group (2) comprises a first mirror surface (2-1) and a second mirror surface (2-2); the first mirror surface (2-1) is at an angle of 45 degrees to the horizontal plane. The second mirror surface (2-2) is perpendicular to the first mirror surface (2-1); when the orthogonal mirror group (2) is located at the first position, the first feed source (4) is not blocked; when the orthogonal mirror group (2) is located at the second position, the second mirror surface (2-2) reflects the signal of the second feed source (5); when the orthogonal mirror group (2) is located at the third position, the first mirror surface (2-1) reflects the signal of the third feed source (6); the beam positions of the feed beam emitted by the first feed source (4), the feed beam of the second feed source (5) after being reflected by the second mirror surface (2-2), and the feed beam of the third feed source (6) after being reflected by the first mirror surface (2-1) are consistent; The driving device (3) comprises two parallel transmission belts (3-1), a driving motor (3-2) and a one-to-two coupling (3-3); the driving motor (3-2) drives the one-to-two coupling (3-3) to drive the transmission belt (3-1) to rotate, thereby enabling the orthogonal mirror group (2) to move on a straight line at an angle of 45 degrees to the horizontal plane.

2. A feed source fast switching device according to claim 1, characterized in that: An isosceles right-angled triangle bracket (1) is provided below each of the two transmission belts (3-1), a fixing rod is provided between the two isosceles right-angled triangle brackets (1), and a transmission shaft of the transmission belt (3-1) is located on the hypotenuse of the isosceles right-angled triangle bracket (1).

3. A feed source fast switching device according to claim 1, characterized in that: The back surface of the first mirror surface (2-1) is connected to the transmission belt (3-1) via a fixing block (3-4); the second mirror surface (2-2) is perpendicular to the first mirror surface (2-1); and the back surface of the first mirror surface (2-1) and the back surface of the second mirror surface (2-2) are connected via a fixing rod (2-3).

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