Parabolic antenna near-field electromagnetic coupling measurement system

Abstract

The utility model belongs to the technical field of antenna measurement, and particularly relates to a near-field electromagnetic coupling measurement system for a parabolic antenna, which comprises a transmitting system, a receiving system and a control system, the transmitting system and the receiving system are both arranged on an outdoor open field, the transmitting system is electrically connected with the control system, and the control system is electrically connected with the receiving system. The receiving system is electrically connected with the control system; the transmitting system comprises a transmitting antenna, a signal source and a first photoelectric converter, the transmitting antenna is electrically connected with the signal source, the signal source is electrically connected with the first photoelectric converter, and the first photoelectric converter is electrically connected with the control system. The system provided by the utility model has the characteristics of convenient assembly and accurate measurement, can efficiently and accurately measure the electromagnetic coupling response between the parabolic antenna and the transmitting antenna, and provides important technical support for the near-field electromagnetic compatibility design of a radio telescope.

Description

Technical Field

[0001] The measurement of the antenna of the present utility model belongs to the technical field, and specifically relates to a near-field electromagnetic coupling measurement system for a parabolic antenna. Background Art

[0002] In the research on the electromagnetic compatibility technology of large radio telescopes, the existing methods mainly focus on the testing of the electromagnetic environment around the radio telescope, the description of interference, and the analysis of a certain link of system interference, while the research on the electromagnetic coupling mechanism in the near field of the radio telescope is relatively insufficient. Therefore, designing a measurement system for the near-field electromagnetic coupling response of a parabolic antenna is of great significance for understanding its near-field electromagnetic coupling characteristics and then optimizing the electromagnetic compatibility design of the radio telescope. Summary of the Utility Model

[0003] Aiming at the technical problem of relatively insufficient research on the electromagnetic coupling mechanism in the near field of the radio telescope, the present utility model provides a near-field electromagnetic coupling measurement system for a parabolic antenna, which can accurately measure the electromagnetic coupling response between the parabolic antenna and the transmitting antenna, and provide technical support for the electromagnetic compatibility design in the near field of the radio telescope.

[0004] In order to solve the above technical problems, the technical solution adopted by the present utility model is as follows:

[0005] A near-field electromagnetic coupling measurement system for a parabolic antenna, comprising a transmitting system, a receiving system, and a control system. The transmitting system and the receiving system are both arranged on an outdoor open space. The transmitting system is electrically connected to the control system, and the receiving system is electrically connected to the control system;

[0006] The transmitting system includes a transmitting antenna, a signal source, and a first optoelectronic converter. The transmitting antenna is electrically connected to the signal source, the signal source is electrically connected to the first optoelectronic converter, and the first optoelectronic converter is electrically connected to the control system.

[0007] The transmitting system further includes a radio frequency cable interface, a first radio frequency cable, an antenna support, and an antenna fixing member. A radio frequency cable interface is provided on the transmitting antenna, and the radio frequency cable interface is electrically connected to the signal source through the first radio frequency cable.

[0008] The transmitting antenna is fixed on the antenna support through the antenna fixing member, and the antenna support is arranged on the ground.

[0009] The receiving system includes a receiving antenna and a signal analyzer. The receiving antenna is electrically connected to the signal analyzer, and the signal analyzer is electrically connected to the control system.

[0010] The receiving system further includes a receiving antenna bracket, a receiving antenna support rod, a reflector panel, a parabolic antenna bracket, and a second RF cable. The receiving antenna is fixed on the receiving antenna bracket, and the receiving antenna bracket is fixed on the reflector panel through a plurality of receiving antenna support rods evenly distributed in the circumferential direction. The reflector panel is fixed on the parabolic antenna bracket, and the parabolic antenna bracket is arranged on the ground.

[0011] The receiving antenna is connected to the signal analyzer through a second RF cable.

[0012] The receiving antenna is arranged at the focus of the reflector panel.

[0013] The control system includes a control computer and a second optoelectronic converter. The control computer is electrically connected to the second optoelectronic converter. The second optoelectronic converter is electrically connected to the first optoelectronic converter, and the second optoelectronic converter is electrically connected to the transmitting system and the receiving system respectively.

[0014] The second optoelectronic converter is connected to the signal analyzer through a network cable. The control computer is connected to the second optoelectronic converter through a network cable. The second optoelectronic converter is connected to the first optoelectronic converter through an optical fiber.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The system of the present utility model has the characteristics of convenient assembly and accurate measurement, and can efficiently and accurately measure the electromagnetic coupling response between the parabolic antenna and the transmitting antenna, providing important technical support for the near-field electromagnetic compatibility design of radio telescopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and those of ordinary skill in the art can also obtain other implementation drawings according to the provided drawings without creative efforts.

[0018] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present utility model can be implemented. Therefore, they do not have technical substance significance. Any modification of the structure, change of the ratio relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0019] Figure 1 It is a structural block diagram of the present utility model;

[0020] Figure 2 This is a schematic structural diagram of the transmitting antenna of the present utility model;

[0021] Figure 3 This is a schematic structural diagram of the transmitting system of the present utility model;

[0022] Figure 4 This is a schematic structural diagram of the receiving system and control system of the present utility model.

[0023] Among them: 1 is the transmitting system, 101 is the transmitting antenna, 102 is the signal source, 103 is the first optoelectronic converter, 104 is the RF cable interface, 105 is the first RF cable, 106 is the antenna support, 107 is the antenna fixing member, 2 is the receiving system, 201 is the receiving antenna, 202 is the signal analyzer, 203 is the receiving antenna support, 204 is the receiving antenna support rod, 205 is the reflector panel, 206 is the parabolic antenna support. 207 is the second RF cable, 3 is the control system, 301 is the control computer, and 302 is the second optoelectronic converter. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. These descriptions are only for further explaining the features and advantages of the present utility model, rather than limiting the claims of the present utility model; based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of the present application.

[0025] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0026] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0027] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In this embodiment, as Figure 1 , Figure 2 shown, the transmitting system 1 includes a signal source 102 and a transmitting antenna 101, which are used to generate and transmit electromagnetic wave signals. The transmitting antenna 101 is fixed on the antenna bracket 106 through the antenna fixing member 107. The first optoelectronic converter 103 of the transmitting system 1 is connected to the second optoelectronic converter 302 of the control system 3 through an optical fiber. As Figure 3 shown, a radio frequency cable interface 104 is provided on the transmitting antenna 101, and it is connected to the signal source 102 using the first radio frequency cable 105.

[0029] As Figure 4 shown, the receiving system 2 includes a reflector panel 205, a receiving antenna 201, and a signal analyzer 202, which are used to receive electromagnetic wave signals. The receiving antenna 201 uses the same antenna as the transmitting antenna 101, is installed at the focus of the reflector panel 205, and is fixed through the receiving antenna bracket 203 and the receiving antenna support rod 204. The receiving antenna 201 is connected to the signal analyzer 202 through the second radio frequency cable 207, and is used to receive electromagnetic wave signals and transmit them to the signal analyzer 202 for analysis. In order to reduce the interference to the receiving system, the control system 3 is placed on the back of the reflector panel 205.

[0030] The control system 3 is used to control the automation of the entire measurement process, including the output control of the signal source 102, the data acquisition and processing of the receiving system 2, etc. Through the second optoelectronic converter 302, the signal source 102 and the signal analyzer 202 are connected to the control computer 301, and the test process is uniformly controlled by the control computer 301. The second optoelectronic converters 302 are connected through an optical fiber, and the second optoelectronic converter 302 is connected to the device through a network cable.

[0031] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention, and all such changes should be included within the protection scope of the present invention.

Claims

1. A parabolic antenna near-field electromagnetic coupling measurement system, characterized in that: The invention comprises a transmitting system (1), a receiving system (2) and a control system (3), wherein the transmitting system (1) and the receiving system (2) are both arranged in an open outdoor area, the transmitting system (1) is electrically connected to the control system (3), and the receiving system (2) is electrically connected to the control system (3); The transmitting system (1) comprises a transmitting antenna (101), a signal source (102) and a first photoelectric converter (103); the transmitting antenna (101) is electrically connected to the signal source (102); the signal source (102) is electrically connected to the first photoelectric converter (103); and the first photoelectric converter (103) is electrically connected to a control system (3).

2. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 1, characterized in that: The transmitting system (1) further comprises a radio frequency cable interface (104), a first radio frequency cable (105), an antenna bracket (106) and an antenna fixing member (107); the transmitting antenna (101) is provided with a radio frequency cable interface (104); the radio frequency cable interface (104) is electrically connected to a signal source (102) via the first radio frequency cable (105).

3. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 2, characterized in that: The transmitting antenna (101) is fixed to an antenna bracket (106) via an antenna fixing member (107); the antenna bracket (106) is arranged on the ground.

4. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 1, characterized in that: The receiving system (2) comprises a receiving antenna (201) and a signal analyzer (202); the receiving antenna (201) is electrically connected to the signal analyzer (202); and the signal analyzer (202) is electrically connected to a control system (3).

5. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 4, characterized in that: The receiving system (2) further comprises a receiving antenna bracket (203), a receiving antenna support rod (204), a reflective surface panel (205), a parabolic antenna bracket (206), and a second radio frequency cable (207); the receiving antenna (201) is fixed on the receiving antenna bracket (203); the receiving antenna bracket (203) is fixed on the reflective surface panel (205) via a plurality of receiving antenna support rods (204) equidistantly distributed in a circumferential direction; the reflective surface panel (205) is fixed on the parabolic antenna bracket (206); and the parabolic antenna bracket (206) is arranged on the ground.

6. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 5, characterized in that: The receiving antenna (201) is connected to the signal analyzer (202) via a second radio frequency cable (207).

7. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 5, characterized in that: The receiving antenna (201) is arranged at the focus of the reflective surface panel (205).

8. The parabolic antenna near-field electromagnetic coupling measurement system according to claim 1, characterized in that: The control system (3) comprises a control computer (301) and a second photoelectric converter (302). The control computer (301) is electrically connected to the second photoelectric converter (302). The second photoelectric converter (302) is electrically connected to the first photoelectric converter (103). The second photoelectric converter (302) is electrically connected to the transmitting system (1) and the receiving system (2), respectively.

9. A parabolic antenna near-field electromagnetic coupling measurement system according to claim 8, characterized in that: The second photoelectric converter (302) is connected to the signal analyzer (202) via a network cable, the control computer (301) is connected to the second photoelectric converter (302) via a network cable, and the second photoelectric converter (302) is connected to the first photoelectric converter (103) via an optical fiber.

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