Satellite-borne broadband reconnaissance antenna convenient to install

Abstract

The utility model discloses a satellite-borne broadband reconnaissance antenna convenient to install, which relates to the technical field of reconnaissance antennas and comprises an antenna array, a broadband one-to-eight feed network and an installation plate. The antenna array is composed of eight broadband double-ridge horn antenna units arranged in a triangular mode and is fixedly installed in the middle of the installation plate. The broadband one-to-eight feed network is composed of two one-to-four broadband power dividers, a one-to-two broadband power divider, eight equal-amplitude in-phase antenna connecting cables, a connecting cable between the two power dividers and a plurality of fixing supports. The antenna unit adopts an E-plane small-size double-ridge horn antenna form, adopts triangular array to suppress grating lobes of an H-plane directional diagram, realizes ultra-wideband work with the working frequency covering 2-6GHz, is high in reliability, adapts to a low-orbit space use environment, and meets use requirements.

Description

Technical Field

[0001] The utility model relates to the technical field of reconnaissance antennas, and particularly relates to a spaceborne broadband reconnaissance antenna which is convenient to install. Background Technique

[0002] A reconnaissance antenna is an important part of an electronic reconnaissance device. Generally, a reconnaissance antenna needs a relatively wide bandwidth to meet the reconnaissance requirements of a relatively wide spectrum. With the increasing application of low-earth orbit satellites, low-earth orbit satellite reconnaissance has attracted more and more attention. As a very important part, a broadband spaceborne reconnaissance antenna has become an urgent need. Content of the Utility Model

[0003] The utility model provides a spaceborne broadband reconnaissance antenna which is convenient to install to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A spaceborne broadband reconnaissance antenna which is convenient to install, comprising an antenna array, a broadband one-to-eight power distribution network, and a mounting plate. The broadband one-to-eight power distribution network is fixedly installed on the top of the antenna array. The antenna array is composed of eight broadband double-ridge horn antenna units arranged in a triangular array and fixedly installed in the middle of the mounting plate. Mounting mechanisms are arranged below the front and rear sides of the broadband double-ridge horn antenna unit. The broadband one-to-eight power distribution network consists of two one-to-four broadband power dividers, a one-to-two broadband power divider, eight equal-amplitude and in-phase antenna connection cables, two connection cables between power dividers, and several fixing brackets. The one-to-two broadband power divider is electrically connected to the two one-to-four broadband power dividers through the two connection cables between power dividers. The two one-to-four broadband power dividers are electrically connected to the eight broadband double-ridge horn antenna units through the eight equal-amplitude and in-phase antenna connection cables. The fixing brackets are fixedly connected to the top of the antenna array. The one-to-four broadband power dividers, the one-to-two broadband power divider, the equal-amplitude and in-phase antenna connection cables, and the connection cables between power dividers are fixedly installed on the top of the antenna array through the fixing brackets.

[0006] A further improvement of the technical solution of the utility model lies in that: the mounting mechanism comprises a support plate. The two support plates are fixedly connected to the front and rear sides of the broadband double-ridge horn antenna unit. The left and right sides of the top of the support plate are fixedly connected with plugging columns, and the tops of the plugging columns penetrate through to the top end of the mounting plate.

[0007] A further improvement of the technical solution of the present utility model lies in that: Knobs are movably connected to the left and right sides of the bottom of the support plate. A transmission screw rod is fixedly connected to the top of the knob. A first sliding groove is formed at the inner top end of the plugging column. The top end of the transmission screw rod penetrates into the first sliding groove and is threadedly connected to a threaded sliding plate on the outer surface. The threaded sliding plate is slidably connected inside the first sliding groove.

[0008] A further improvement of the technical solution of the present utility model lies in that: Pulling plates are movably connected to the left and right sides of the bottom of the threaded sliding plate. A sliding clamping plate is movably connected to the bottom end of the pulling plate. The two sliding clamping plates are respectively slidably connected to the left and right sides of the bottom of the first sliding groove. One end of the sliding clamping plate away from the pulling plate penetrates to the top of the mounting plate.

[0009] A further improvement of the technical solution of the present utility model lies in that: The sliding clamping plate includes a sliding plate. The sliding plate is movably connected to the bottom end of the pulling plate. A second sliding groove is formed inside the sliding plate. A pressing column is slidably connected to the inner bottom end of the second sliding groove. The bottom end of the pressing column penetrates to the bottom of the sliding plate.

[0010] A further improvement of the technical solution of the present utility model lies in that: A sliding pressing plate is fixedly connected to the top of the pressing column. The outer surface of the sliding pressing plate is slidably connected to the inner surface of the second sliding groove. A top pressing spring is fixedly connected to the bottom of the sliding pressing plate. The top pressing spring is arranged on the outer surface of the pressing column and its bottom is fixedly connected to the inner bottom wall of the second sliding groove.

[0011] A further improvement of the technical solution of the present utility model lies in that: A sliding pulling plate is slidably connected to the top of the sliding pressing plate. One end of the sliding pulling plate close to the first sliding groove is fixedly connected to the inner wall of the first sliding groove.

[0012] A further improvement of the technical solution of the present utility model lies in that: A trapezoidal sliding groove is formed at the bottom of the sliding pulling plate. A trapezoidal sliding block is fixedly connected to the top of the sliding pressing plate. The trapezoidal sliding block is slidably connected to the inner side of the trapezoidal sliding groove.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0014] 1. The present utility model provides a spaceborne broadband reconnaissance antenna that is easy to install. Through the mutual cooperation of a one-to-four broadband power divider, a one-to-two broadband power divider, an equal-amplitude and in-phase antenna connection cable, a power divider connection cable, and a fixed bracket, the antenna unit adopts the form of an E-plane small-size double-ridge horn antenna. The triangular array is used to suppress the grating lobes of the H-plane radiation pattern. The operating frequency covers 2 - 6 GHz to achieve ultra-wideband operation, high reliability, adapt to the low-orbit space use environment, and meet the use requirements.

[0015] 2. The present utility model provides a spaceborne broadband reconnaissance antenna that is easy to install. Through the mutual cooperation among the support plate, the insertion column, the knob, the transmission screw, the threaded slide plate, the pulling plate, and the sliding clamping plate, the broadband double-ridge horn antenna unit is inserted in the middle of the mounting plate, so that the insertion column is inserted into the top of the mounting plate. By rotating the knob, the transmission screw can drive the threaded slide plate to slide, and thus, under the pulling of the pulling plate, the sliding clamping plate can be clamped on the top of the mounting plate, realizing the fixation of the broadband double-ridge horn antenna unit, facilitating the installation of the antenna array, and making the use of the spaceborne broadband reconnaissance antenna more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the spaceborne broadband reconnaissance antenna of the present utility model;

[0017] Figure 2 is a schematic bottom structural diagram of the spaceborne broadband reconnaissance antenna of the present utility model;

[0018] Figure 3 is a top view of the spaceborne broadband reconnaissance antenna of the present utility model;

[0019] Figure 4 is a schematic sectional structural diagram of the installation mechanism of the present utility model;

[0020] Figure 5 is a schematic sectional structural diagram of the sliding clamping plate of the present utility model.

[0021] In the figure: 1. Antenna array; 2. Broadband one-to-eight power feeding network; 21. One-to-four broadband power divider; 22. One-to-two broadband power divider; 23. Equal-amplitude and in-phase antenna connection cable; 24. Connection cable between power dividers; 25. Fixed bracket; 3. Mounting plate; 4. Installation mechanism; 41. Support plate; 42. Insertion column; 43. Knob; 44. Transmission screw; 45. Threaded slide plate; 46. Pulling plate; 47. Sliding clamping plate; 471. Sliding plate; 472. Pressing column; 473. Sliding pressing plate; 474. Tightening spring; 475. Sliding pulling plate; 476. Trapezoidal slider; 477. Trapezoidal chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical means, creative features, achieved purposes, and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments:

[0023] As Figures 1-3As shown in the figure, the utility model provides a spaceborne broadband reconnaissance antenna which is convenient for installation, including an antenna array 1, a broadband one-to-eight power distribution network 2, and a mounting plate 3. The broadband one-to-eight power distribution network 2 is fixedly installed on the top of the antenna array 1. The antenna array 1 is composed of eight broadband double-ridge horn antenna units arranged in a triangular array and fixedly installed in the middle of the mounting plate 3. Installation mechanisms 4 are arranged below both the front and rear sides of the broadband double-ridge horn antenna units. The broadband one-to-eight power distribution network 2 is composed of two one-to-four broadband power dividers 21, a one-to-two broadband power divider 22, eight equal-amplitude and in-phase antenna connection cables 23, two connection cables 24 between the power dividers, and several fixing brackets 25. The one-to-two broadband power divider 22 is electrically connected to the two one-to-four broadband power dividers 21 through the two connection cables 24 between the power dividers. The two one-to-four broadband power dividers 21 are electrically connected to the eight broadband double-ridge horn antenna units through the eight equal-amplitude and in-phase antenna connection cables 23. The fixing brackets 25 are fixedly connected to the top of the antenna array 1. The one-to-four broadband power dividers 21, the one-to-two broadband power divider 22, the equal-amplitude and in-phase antenna connection cables 23, and the connection cables 24 between the power dividers are fixedly installed on the top of the antenna array 1 through the fixing brackets 25;

[0024] The antenna array 1 is composed of eight broadband double-ridge horn antenna units with a working frequency band covering 2 - 6 GHz arranged in a triangular array. The array antenna is installed on the mounting plate 3. The E-plane size of the broadband double-ridge horn with a frequency band of 2 - 6 GHz is less than 1 wavelength of the highest frequency to suppress the grating lobes of the E-plane pattern in the high-frequency band. The H-plane uses the triangular array method to suppress the grating lobes of the pattern. The broadband one-to-eight power distribution network 2 performs equal-amplitude and in-phase feeding on the eight broadband double-ridge horn antenna units of the antenna array 1. Both the one-to-four broadband power divider 21 and the one-to-two broadband power divider 22 adopt the design of air dielectric strip line power dividers to reduce the electromagnetic loss of the power distribution network and perform airtight treatment to improve its adaptability to the space environment. The equal-amplitude and in-phase antenna connection cables 23 realize the equal-amplitude and in-phase connection of signals between the antenna array 1 and the one-to-four broadband power divider 21. The connection cables 24 between the power dividers realize the equal-amplitude and in-phase connection of signals between the one-to-four broadband power divider 21 and the one-to-two broadband power divider 22. The one-to-two broadband power divider 22 finally synthesizes the signals into one received signal. The fixing brackets 25 fix all the power dividers and cables on the antenna array 1 and the mounting plate 3 to meet the vibration environment during satellite launch.

[0025] As Figure 4As shown in the figure, the present utility model provides a spaceborne broadband reconnaissance antenna that is convenient for installation. The installation mechanism 4 includes a support plate 41. Two support plates 41 are fixedly connected to the front and rear sides of the broadband double-ridge horn antenna unit. On the left and right sides of the top of the support plate 41, plug-in columns 42 are fixedly connected. The top of the plug-in column 42 penetrates to the top of the mounting plate 3. On the left and right sides of the bottom of the support plate 41, knobs 43 are movably connected. The top of the knob 43 is fixedly connected with a transmission screw 44. At the inner top of the plug-in column 42, a first sliding groove is opened. The top of the transmission screw 44 penetrates into the first sliding groove and is threadedly connected with a threaded sliding plate 45 on its outer surface. The threaded sliding plate 45 is slidably connected in the first sliding groove. On the left and right sides of the bottom of the threaded sliding plate 45, pulling plates 46 are movably connected. The bottom end of the pulling plate 46 is movably connected with a sliding clamping plate 47. The two sliding clamping plates 47 are respectively slidably connected to the left and right sides of the bottom of the first sliding groove. The end of the sliding clamping plate 47 away from the pulling plate 46 penetrates to the top of the mounting plate 3;

[0026] When installing the antenna array 1, insert the broadband double-ridge horn antenna unit in the middle of the mounting plate 3, so that the plug-in column 42 is inserted into the top of the mounting plate 3. By rotating the knob 43, the transmission screw 44 can be rotated, and the threaded sliding plate 45 can be driven to slide inside the first sliding groove. Thus, under the pulling of the pulling plate 46, the sliding clamping plate 47 can be clamped into the top of the mounting plate 3 from the inside of the first sliding groove. Through the cooperation with the support plate 41, the fixation of the broadband double-ridge horn antenna unit can be realized, which facilitates the installation of the antenna array 1 and makes the use of the spaceborne broadband reconnaissance antenna more convenient.

[0027] As Figure 5 shown in the figure, the present utility model provides a spaceborne broadband reconnaissance antenna that is convenient for installation. The sliding clamping plate 47 includes a sliding plate 471. The sliding plate 471 is movably connected to the bottom end of the pulling plate 46. A second sliding groove is opened inside the sliding plate 471. At the inner bottom end of the second sliding groove, a pressing column 472 is slidably connected. The bottom end of the pressing column 472 penetrates to the bottom of the sliding plate 471. The top of the pressing column 472 is fixedly connected with a sliding pressing plate 473. The outer surface of the sliding pressing plate 473 is slidably connected with the inner surface of the second sliding groove. The bottom of the sliding pressing plate 473 is fixedly connected with a top spring 474. The top spring 474 is arranged on the outer surface of the pressing column 472 and its bottom is fixedly connected with the inner wall of the bottom end of the second sliding groove. A sliding pulling plate 475 is slidably connected to the top of the sliding pressing plate 473. One end of the sliding pulling plate 475 close to the first sliding groove is fixedly connected with the inner wall of the first sliding groove. A trapezoidal sliding groove 477 is opened at the bottom of the sliding pulling plate 475. A trapezoidal sliding block 476 is fixedly connected to the top of the sliding pressing plate 473. The trapezoidal sliding block 476 is slidably connected to the inner side of the trapezoidal sliding groove 477;

[0028] When the pulling plate 46 pulls the sliding clamping plate 47 to extend, the sliding plate 471 will slide along the sliding pulling plate 475. Then, the inner wall of the trapezoidal chute 477 will squeeze the trapezoidal slider 476, so as to be able to press the sliding pressing plate 473 to slide downward, thereby being able to squeeze the top spring 474, so that the pressing column 472 can press the mounting plate 3, making the fixing effect of the antenna array 1 better.

[0029] Next, the working principle of the spaceborne broadband reconnaissance antenna that is easy to install will be specifically described.

[0030] As Figures 1-5 shown, in use, the strong electromagnetic wave signals radiated from the ground are received by the antenna array 1, and then transmitted to two one-to-four broadband power dividers 21 through eight equal-amplitude and in-phase antenna connection cables 23 for signal synthesis. After the two one-to-four broadband power dividers 21 synthesize two signals, they are then transmitted to the one-to-two broadband power divider 22 through two connection cables 24 between the power dividers. After the one-to-two broadband power divider 22 synthesizes the two signals into one received signal and gives it to the receiving system.

[0031] The above text generally describes the present invention in detail, but on the basis of the present invention, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present invention are all within the protection scope of the present invention.

Claims

1. A spaceborne broadband reconnaissance antenna that is convenient for installation, characterized in that: It includes an antenna array (1), a broadband one-to-eight power distribution network (2), and a mounting plate (3). The broadband one-to-eight power distribution network (2) is fixedly installed on the top of the antenna array (1). The antenna array (1) is composed of eight broadband double-ridge horn antenna units arranged in a triangular array and is fixedly installed in the middle of the mounting plate (3). Mounting mechanisms (4) are arranged below the front and rear sides of the broadband double-ridge horn antenna units. The broadband one-to-eight power distribution network (2) is composed of two one-to-four broadband power dividers (21), one one-to-two broadband power divider (22), eight equal-amplitude and in-phase antenna connection cables (23), two connection cables between power dividers (24), and several fixing brackets (25). The one-to-two broadband power divider (22) is electrically connected to the two one-to-four broadband power dividers (21) through the two connection cables between power dividers (24). The two one-to-four broadband power dividers (21) are electrically connected to the eight broadband double-ridge horn antenna units through the eight equal-amplitude and in-phase antenna connection cables (23). The fixing brackets (25) are fixedly connected to the top of the antenna array (1). The one-to-four broadband power dividers (21), the one-to-two broadband power dividers (22), the equal-amplitude and in-phase antenna connection cables (23), and the connection cables between power dividers (24) are fixedly installed on the top of the antenna array (1) through the fixing brackets (25).

2. The spaceborne broadband reconnaissance antenna according to claim 1, which is characterized in that: The mounting mechanism (4) includes a support plate (41). The two support plates (41) are fixedly connected to the front and rear sides of the broadband double-ridge horn antenna unit. The left and right sides of the top of the support plate (41) are fixedly connected with plugging columns (42). The tops of the plugging columns (42) penetrate to the top end of the mounting plate (3).

3. The spaceborne broadband reconnaissance antenna according to claim 2, characterized in that: The left and right sides of the bottom of the support plate (41) are movably connected with knobs (43). The tops of the knobs (43) are fixedly connected with transmission screw rods (44). A first sliding groove is opened at the inner top end of the plugging column (42). The top end of the transmission screw rod (44) penetrates into the inner part of the first sliding groove and is threadedly connected with a threaded sliding plate (45) on its outer surface. The threaded sliding plate (45) is slidably connected in the first sliding groove.

4. The spaceborne broadband reconnaissance antenna according to claim 3, wherein: The left and right sides of the bottom of the threaded sliding plate (45) are movably connected with pulling plates (46). The bottom ends of the pulling plates (46) are movably connected with sliding clamping plates (47). The two sliding clamping plates (47) are respectively slidably connected to the left and right sides of the bottom of the first sliding groove. The ends of the sliding clamping plates (47) away from the pulling plates (46) penetrate to the top of the mounting plate (3).

5. The spaceborne broadband reconnaissance antenna according to claim 4, characterized in that: The sliding clamping plate (47) includes a sliding plate (471). The sliding plate (471) is movably connected to the bottom end of the pulling plate (46). A second sliding groove is opened in the sliding plate (471). A pressing column (472) is slidably connected to the inner bottom end of the second sliding groove. The bottom end of the pressing column (472) penetrates to the bottom of the sliding plate (471).

6. The spaceborne broadband reconnaissance antenna according to claim 5, characterized in that: The top of the pressing column (472) is fixedly connected with a sliding pressing plate (473). The outer surface of the sliding pressing plate (473) is slidably connected with the inner surface of the second sliding groove. The bottom of the sliding pressing plate (473) is fixedly connected with a top spring (474). The top spring (474) is arranged on the outer surface of the pressing column (472) and its bottom is fixedly connected with the inner wall of the bottom end of the second sliding groove.

7. The spaceborne broadband reconnaissance antenna according to claim 6, wherein: A sliding pulling plate (475) is slidably connected to the top of the sliding pressing plate (473). One end of the sliding pulling plate (475) close to the first sliding groove is fixedly connected with the inner wall of the first sliding groove.

8. The spaceborne broadband reconnaissance antenna according to claim 7, characterized in that: A trapezoidal sliding groove (477) is formed in the bottom of the sliding pulling plate (475). A trapezoidal sliding block (476) is fixedly connected to the top of the sliding pressing plate (473). The trapezoidal sliding block (476) is slidably connected to the inside of the trapezoidal sliding groove (477).

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