High-isolation broadband antenna system

Abstract

The invention relates to the technical field of broadband antennas, in particular to a high-isolation broadband antenna system which comprises a main body plate, a detachable broadband mechanism is arranged at the upper end of the main body plate, the detachable broadband mechanism comprises a placement groove formed in the upper end of the main body plate, and a plurality of connecting plates arranged at equal intervals are arranged in the placement groove of the main body plate. The side surfaces of the plurality of connecting plates are slidably connected with a plurality of first fixing bodies respectively, the upper ends of the plurality of first fixing bodies are fixedly connected with grounding plates respectively, and the upper ends of the plurality of grounding plates are fixedly connected with dielectric substrates respectively; and the fourth limiting body is blown by the airflow to drive the scraping block to clean the coating at the antenna slot, so that the cleanliness in the antenna slot is ensured, and the signal strength of the slot broadband antenna is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of broadband antennas, and particularly to a broadband antenna system with high isolation. Background Art

[0002] A broadband antenna refers to an antenna that can effectively operate within a relatively wide frequency range. Its main feature is a relatively wide bandwidth, capable of covering multiple frequency bands to meet various communication requirements. A broadband antenna system includes a patch broadband antenna system composed of several patch broadband units. The patch broadband system has the advantages of a small volume, broadband characteristics, and strong designability. To improve the isolation of the patch broadband system, appropriate slits can be opened on the surface of the dielectric substrate in several patch broadband units. When the frequency of an external interference signal matches the resonance frequency of the slit, the slit will strongly respond to the signal of that frequency, either absorbing it or reflecting it. This is equivalent to constructing a frequency-selective barrier between the patch antennas, which can prevent interference signals of specific frequencies from propagating between the antennas, thereby improving the isolation. Such a broadband system with high isolation can be widely applied to unmanned aerial vehicles (UAVs), enabling stable communication between the UAV and ground signals during flight, and playing an important role in fields such as UAV agriculture and UAV mapping.

[0003] When a broadband antenna with high isolation is placed on a UAV, to ensure the heat dissipation and light weight of the broadband, generally only a protective coating is applied to the receiving surface of the broadband, and the dielectric substrate of the broadband system is an integral body. When the broadband operates with the UAV, the surface of the broadband is subject to a large impact force, and the impact force on the broadband surface is uneven. Generally, the surface of the broadband near the operating direction is subject to a larger impact force, resulting in different degrees of wear on the broadband surface. When a coating on a part of the broadband surface is completely worn, the entire broadband surface needs to be recoated, and the service life is relatively low. When the UAV is flying at high altitude, impurities such as dust and water vapor are likely to enter the slits on the dielectric substrate, and the prior art cannot clear the slits in the broadband in real time, reducing the signal reception ability of the broadband. Summary of the Invention

[0004] The purpose of the present invention is to propose a broadband antenna system with high isolation to solve the deficiencies in the background art.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: a high isolation broadband antenna system, including a main body board, a detachable broadband mechanism is provided at the upper end of the main body board, the detachable broadband mechanism includes a placement groove opened at the upper end of the main body board, the main body board is provided with a plurality of connecting plates arranged at equal intervals in the placement groove, a plurality of first fixing bodies are respectively slidably connected to the sides of the plurality of connecting plates, grounding plates are respectively fixedly connected to the upper ends of the plurality of first fixing bodies, dielectric substrates are respectively fixedly connected to the upper ends of the plurality of grounding plates, a patch antenna and an antenna slot are provided on the upper ends of the plurality of dielectric substrates, a protective layer is coated on the surfaces of the dielectric substrates and the patch antennas, and a cleaning and detection mechanism for cleaning impurities and detecting the coating thickness at the surface coatings of the dielectric substrates and the patch antennas and at the antenna slots is provided at the upper end of the main body board.

[0006] Preferably, a plurality of first limiting grooves are opened on the side surface of the placement groove of the main body board, a plurality of first cavities communicating with the first limiting grooves are opened in the main body board, the end parts of the plurality of connecting plates are respectively fixedly connected with second limiting bodies slidably matched with the first limiting grooves, and the cross section of the first cavity is larger than the cross section of the second limiting body.

[0007] Preferably, limiting holes slidably matched with the side surfaces of the connecting plates are respectively penetrated through the side surfaces of the plurality of first fixing bodies, two symmetrically arranged threaded holes are respectively penetrated through the side surfaces of the plurality of first fixing bodies, and two groups of first threaded rods are respectively arranged in the two threaded holes in a matching manner.

[0008] Preferably, the two groups of first threaded rods are symmetrically arranged, each group of first threaded rods is composed of two first threaded rods, fixing disks are respectively fixedly connected to the end parts of one group of first threaded rods, second limiting grooves are respectively opened at the end parts of the one group of fixing disks, first limiting bodies are respectively fixedly connected to the end parts of the other group of first threaded rods, and the first limiting bodies and the second limiting grooves are slidably matched.

[0009] Preferably, a limiting plate is fixedly connected to one side of the main body board by bolts, and a feeding device is fixedly connected to the side surface of the limiting plate.

[0010] Preferably, the cleaning and detecting mechanism includes a protective cover fixedly arranged on the side surface of the main body board. Inside the protective cover on the side surface of the main body board, two symmetrically arranged shielding cases are fixedly connected. Motors are respectively fixedly connected inside the two shielding cases. Third limiting grooves are symmetrically formed at the upper end of the main body board. The transmission shafts of the two motors penetrate through the main body board in a rotating manner. Second threaded rods are respectively fixedly connected to the ends of the transmission shafts of the two motors inside the third limiting grooves. Third limiting bodies are respectively arranged in a matching manner on the sides of the two second threaded rods. The sides of the two third limiting bodies are respectively in sliding fit with the third limiting grooves. Flexible dust-proof cloths covering the third limiting grooves are respectively fixedly connected to the sides of the two third limiting bodies.

[0011] Preferably, support plates are respectively fixedly connected to the sides of the two third limiting bodies. A plurality of second fixing bodies arranged at equal intervals are fixedly connected to the lower ends of the support plates. A plurality of brushes are fixedly connected to the lower ends of each of the second fixing bodies. A second cavity is formed at the lower end of each of the second fixing bodies. A fourth limiting body is in sealed sliding fit inside the second cavity. An empty groove is formed at the lower end of each of the fourth limiting bodies. A pressure sensor is fixedly connected to each of the fourth limiting bodies inside the empty groove. Connecting rods are respectively fixedly connected to the lower ends of each of the pressure sensors.

[0012] Preferably, a scraping block is fixedly connected to the lower end of each of the connecting rods. The scraping block has a wedge-shaped structure. A fourth limiting groove communicating with the second cavity is formed inside each of the second fixing bodies. A limiting block in sliding fit with the fourth limiting groove is respectively fixedly connected to the side surface of each of the fourth limiting bodies. An air inlet groove communicating with the second cavity is formed on one side of each of the second fixing bodies.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the main body board moves, the two motors are started every once in a while. The two motors respectively drive the second threaded rods to rotate. The two second threaded rods respectively cooperate to drive the third limiting bodies to reciprocate along the third limiting grooves. Second fixing bodies corresponding to the positions of the first fixing bodies are arranged at the lower ends of the support plates on the inner sides of the two third limiting bodies. Since the air inlet groove is located on the side surface of the second fixing body in the advancing direction, when the main body board flies, gas will enter the air inlet groove. Then the gas drives the fourth limiting body to move downward. The position of the scraping block corresponds to the antenna gap, and the cross section of the scraping block is the same as that of the antenna gap. Therefore, every once in a while, the brushes at the lower end of the second fixing body can clean the coating on the surface of the dielectric substrate and the patch antenna. At the same time, the fourth limiting body drives the scraping block to clean the coating at the antenna gap under the blowing of the air flow, so as to ensure the cleanliness inside the antenna gap and improve the signal strength of the gap broadband antenna. When the scraping block moves along a number of first fixing bodies, the pressure sensor can detect the coating thickness on the upper ends of the number of first fixing bodies. The pressure sensor is connected to the controller through an anti-shielding wire, so as to record the coating thickness on the upper end of any one of the first fixing bodies. When the broadband system is not working, the coating wear curves on the upper ends of the number of first fixing bodies are analyzed by a computer, and the positions of the number of first fixing bodies are replaced, so that the upper ends of the number of first fixing bodies can be worn to the replacement surface simultaneously, thereby prolonging the service life of the device. During operation, the wear conditions of the upper ends of the number of first fixing bodies can be detected at all times, so as to timely replace the first fixing body with serious coating wear, prevent the dielectric substrate and the patch antenna on the upper end of the first fixing body from directly contacting the air due to coating wear, and further reduce the use cost of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the whole of the present invention Figure 1 ; Figure 3 is a cross-sectional view of the whole of the present invention Figure 2 ; Figure 4 is a cross-sectional view of the whole of the present invention Figure 3 ; Figure 5 is a schematic diagram of the structure of a broadband antenna unit of the present invention; Figure 6 is a cross-sectional view of the structure of a broadband antenna unit of the present invention; Figure 7 is of the present invention Figure 2 enlarged view at A; Figure 8 is of the present invention Figure 4 enlarged view at B; Figure 9 is of the present invention Figure 4 enlarged view at C.

[0015] 1. Main body board; 2. Detachable broadband mechanism; 3. Cleaning and detection mechanism; 11. Protective cover; 21. Placing groove; 22. First limiting groove; 23. Connecting plate; 24. Limiting plate; 25. Feeding device; 26. First fixing body; 27. Limiting hole; 28. Threaded hole; 29. First threaded rod; 210. Fixed disk; 211. Second limiting groove; 212. First limiting body; 213. Grounding plate; 214. Dielectric substrate; 215. Patch antenna; 216. Antenna slot; 217. First cavity; 218. Second limiting body; 31. Flexible dust-proof cloth; 32. Shielding shell; 33. Motor; 34. Second threaded rod; 35. Third limiting groove; 36. Third limiting body; 37. Second fixing body; 38. Support plate; 39. Second cavity; 310. Limiting block; 311. Fourth limiting groove; 312. Fourth limiting body; 313. Brush; 314. Empty slot; 315. Pressure sensor; 316. Connecting rod; 317. Scraping block; 318. Air inlet groove. Detailed implementation manner

[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0017] Please refer to Figure 1 - Figure 9 , a high isolation broadband antenna system, including a main body board 1, and a detachable broadband mechanism 2 is arranged at the upper end of the main body board 1.

[0018] The detachable broadband mechanism 2 includes a placing groove 21 opened at the upper end of the main body board 1. The main body board 1 is provided with a plurality of connecting plates 23 arranged at equal intervals in the placing groove 21. A plurality of first fixing bodies 26 are respectively slidably connected to the sides of the plurality of connecting plates 23. Grounding plates 213 are respectively fixedly connected to the upper ends of the plurality of first fixing bodies 26. Dielectric substrates 214 are respectively fixedly connected to the upper ends of the plurality of grounding plates 213. Patch antennas 215 and antenna slots 216 are arranged on the upper ends of the plurality of dielectric substrates 214. A protective layer is coated on the surfaces of the dielectric substrates 214 and the patch antennas 215.

[0019] The main body board 1 is provided with a plurality of first limiting grooves 22 on the side of the placing groove 21. A plurality of first cavities 217 communicating with the first limiting grooves 22 are opened in the main body board 1. Second limiting bodies 218 slidably matched with the first limiting grooves 22 are respectively fixedly connected to the ends of the plurality of connecting plates 23. The cross-section of the first cavity 217 is larger than the cross-section of the second limiting body 218.

[0020] The sides of several of the first fixing bodies 26 are respectively penetrated with limiting holes 27 that are slidably mated with the side of the connecting plate 23, and the sides of several of the first fixing bodies 26 are respectively penetrated with two symmetrically arranged threaded holes 28, and two sets of first threaded rods 29 are respectively arranged in the two threaded holes 28 in a mating manner.

[0021] The two sets of first threaded rods 29 are symmetrically arranged. Each set of first threaded rods 29 is composed of two first threaded rods 29. The ends of one set of first threaded rods 29 are respectively fixedly connected with fixing plates 210, and the ends of one set of fixing plates 210 are respectively provided with second limiting grooves 211. The ends of the other set of first threaded rods 29 are respectively fixedly connected with first limiting bodies 212, and the first limiting bodies 212 and the second limiting grooves 211 are arranged in a sliding mating manner.

[0022] One side of the main body plate 1 is fixedly connected with a limiting plate 24 through bolts, and a feeding device 25 is fixedly connected to the side of the limiting plate 24.

[0023] Specifically, rotate and extend the first threaded rods 29 on the sides of several first fixing bodies 26 at a preset interval, so that two adjacent first fixing bodies 26 move to corresponding positions. The first limiting bodies 212 on the sides of the two first fixing bodies 26 are fully mated with the second limiting grooves 211. Finally, fix the limiting plate 24 to the main body plate 1 through bolts, ensuring that the fixing plates 210 on the sides of the last row of first fixing bodies 26 are in contact with the inner side of the limiting plate 24, which can ensure that several first fixing bodies 26 are stably placed in the placement groove 21 in a preset arrangement.

[0024] A cleaning and detection mechanism 3 for cleaning impurities and detecting the coating thickness on the surfaces of the dielectric substrate 214 and the patch antenna 215 and at the antenna gap 216 is provided at the upper end of the main body plate 1.

[0025] The cleaning and detection mechanism 3 includes a protective cover 11 fixedly arranged on the side of the main body plate 1. Two symmetrically arranged shielding cases 32 are fixedly connected to the side of the main body plate 1 inside the protective cover 11. Motors 33 are respectively fixedly connected inside the two shielding cases 32. Third limiting grooves 35 are symmetrically opened at the upper end of the main body plate 1. The transmission shafts of the two motors 33 rotate through the main body plate 1, and second threaded rods 34 are respectively fixedly connected to the ends of the transmission shafts of the two motors 33 in the third limiting grooves 35. Third limiting bodies 36 are respectively arranged in a mating manner on the sides of the two second threaded rods 34. The sides of the two third limiting bodies 36 are respectively in sliding mating with the third limiting grooves 35. Flexible dust-proof cloths 31 covering the third limiting grooves 35 are respectively fixedly connected to the sides of the two third limiting bodies 36.

[0026] On the sides of the two third limit bodies 36, support plates 38 are fixedly connected respectively. At the lower ends of the support plates 38, a number of second fixing bodies 37 arranged at equal intervals are fixedly connected. At the lower ends of each of the second fixing bodies 37, a number of brushes 313 are fixedly connected. At the lower ends of each of the second fixing bodies 37, a second cavity 39 is formed. A fourth limit body 312 is hermetically and slidably fitted in the second cavity 39. At the lower ends of each of the fourth limit bodies 312, an empty groove 314 is formed. In the empty groove 314 of each of the fourth limit bodies 312, a pressure sensor 315 is fixedly connected. At the lower ends of each of the pressure sensors 315, a connecting rod 316 is fixedly connected respectively.

[0027] At the lower ends of each of the connecting rods 316, a scraping block 317 is fixedly connected. The scraping block 317 has a wedge-shaped structure. In each of the second fixing bodies 37, a fourth limit groove 311 communicating with the second cavity 39 is formed. On the sides of each of the fourth limit bodies 312, a limit block 310 slidably fitted with the fourth limit groove 311 is fixedly connected. On one side of each of the second fixing bodies 37, an air inlet groove 318 communicating with the second cavity 39 is formed.

[0028] Specifically, when the main body plate 1 flies, gas will enter the air inlet groove 318. Then the gas drives the fourth limit body 312 to move downward. The position of the scraping block 317 corresponds to the antenna gap 216, and the cross-section of the scraping block 317 is the same as that of the antenna gap 216. Therefore, every once in a while, the brushes 313 at the lower ends of the second fixing bodies 37 can clean the coatings on the surfaces of the dielectric substrate 214 and the patch antenna 215. At the same time, the fourth limit body 312 drives the scraping block 317 to clean the coating at the antenna gap 216 under the blowing of the air flow, so as to ensure the cleanliness inside the antenna gap 216.

[0029] During use, first move several connecting plates 23 in such a way that the second limiting bodies 218 correspond to the first limiting grooves 22. When the second limiting bodies 218 at the ends of the connecting plates 23 enter the first cavity 217, rotate the several connecting plates 23 by 90°. Then, insert several first fixing bodies 26 into the connecting plates 23 through the limiting holes 27 according to a predetermined arrangement. At this time, the lower ends of the several first fixing bodies 26 contact the main body plate 1. At the same time, rotate and extend the first threaded rods 29 on the sides of the several first fixing bodies 26 at a predetermined spacing, so that adjacent two first fixing bodies 26 move to corresponding positions, and the first limiting bodies 212 on the sides of the two first fixing bodies 26 are fully engaged with the second limiting grooves 211. Finally, fix the limiting plate 24 to the main body plate 1 through bolts, ensuring that the fixing discs 210 on the sides of the last row of first fixing bodies 26 are in contact with the inner side surface of the limiting plate 24, which can ensure that the several first fixing bodies 26 are stably placed in the placement grooves 21 according to a predetermined arrangement. Then, fix the lower end of the main body plate 1 on the wing or the belly of the drone. The several patch antennas 215 are connected by anti-shielding wires according to design requirements.

[0030] When the drone drives the main body plate 1 to fly, a large amount of water vapor will adhere to the end face coatings of several first fixing bodies 26 on the side of the main body plate 1. These water vapors will adsorb impurities such as dust in the air, resulting in more impurities adhering to the coatings at the ends of the first fixing bodies 26 and reducing the receiving ability of the broadband antenna. When the main body plate 1 moves, every once in a while, two motors 33 are started. The two motors 33 drive the second threaded rods 34 to rotate respectively. The two second threaded rods 34 respectively cooperate to drive the third limiting bodies 36 to reciprocate along the third limiting grooves 35. There are second fixing bodies 37 corresponding to the positions of the first fixing bodies 26 at the lower ends of the support plates 38 inside the two third limiting bodies 36. Since the air inlet grooves 318 are located on the side of the second fixing bodies 37 in the forward direction, when the main body plate 1 flies, the gas will enter the air inlet grooves 318. Then, the gas drives the fourth limiting body 312 to move downward. The position of the scraping block 317 corresponds to the antenna gap 216, and the cross-section of the scraping block 317 is the same as that of the antenna gap 216. Therefore, every once in a while, the brush 313 at the lower end of the second fixing body 37 can clean the coatings on the surfaces of the dielectric substrate 214 and the patch antenna 215. At the same time, the fourth limiting body 312 drives the scraping block 317 to clean the coating at the antenna gap 216 under the blowing of the air flow, so as to ensure the cleanliness inside the antenna gap 216 and improve the signal strength of the gap broadband antenna.

[0031] Meanwhile, during the reciprocating movement of the support plate 38 driven by the two motors 33, several second fixing bodies 37 at the lower end of the support plate 38 contact the broadband antenna unit through the scraping blocks 317. When the scraping blocks 317 move along several first fixing bodies 26, the pressure sensor 315 can detect the coating thickness at the upper ends of the several first fixing bodies 26. The pressure sensor 315 is connected to the controller through the anti-shielding wire, so as to record the coating thickness at the upper end of any one of the first fixing bodies 26. When the broadband system is not working, the coating wear curves at the upper ends of the several first fixing bodies 26 are analyzed by a computer, and the positions of the several first fixing bodies 26 are replaced, so that the upper ends of the several first fixing bodies 26 can be worn to the replacement surface simultaneously, thereby prolonging the service life of the device and reducing the use cost. When the device is in operation, after the first fixing body 26 is impacted by an object such as a bird, the pressure sensor 315 can detect the abnormal wear on the surface of the first fixing body 26 in time, and then the impacted first fixing body 26 inside the main body plate 1 is replaced separately, reducing the loss of the device when it is impacted.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A high isolation broadband antenna system, comprising a main board (1), characterized in that: A detachable broadband mechanism (2) is provided at the upper end of the main board (1). The detachable broadband mechanism (2) includes a placement groove (21) opened at the upper end of the main board (1). The main board (1) is provided with a number of equally spaced connecting plates (23) in the placement groove (21). A number of first fixing bodies (26) are respectively slidably connected to the sides of the number of connecting plates (23). The upper ends of the number of first fixing bodies (26) are respectively fixedly connected to a ground plate (213). The upper ends of the number of ground plates (213) are respectively fixedly connected to a dielectric substrate (214). A patch antenna (215) and an antenna slot (216) are provided at the upper ends of the number of dielectric substrates (214). A protective layer is coated on the surfaces of the dielectric substrate (214) and the patch antenna (215). A cleaning and detection mechanism (3) for cleaning impurities and detecting the coating thickness at the surface coating of the dielectric substrate (214) and the patch antenna (215) and at the antenna slot (216) is provided at the upper end of the main board (1).

2. The high isolation broadband antenna system according to claim 1, characterized in that: A number of first limiting grooves (22) are opened at the sides of the placement groove (21) of the main board (1). A number of first cavities (217) communicated with the first limiting grooves (22) are opened in the main board (1). The ends of the number of connecting plates (23) are respectively fixedly connected to second limiting bodies (218) slidably matched with the first limiting grooves (22). The cross-section of the first cavity (217) is larger than the cross-section of the second limiting body (218).

3. The high isolation broadband antenna system according to claim 2, characterized in that: A number of limiting holes (27) slidably matched with the sides of the connecting plates (23) are respectively penetrated through the sides of the number of first fixing bodies (26). Two symmetrically arranged threaded holes (28) are respectively penetrated through the sides of the number of first fixing bodies (26). Two groups of first threaded rods (29) are respectively arranged in the two threaded holes (28) in a matching manner.

4. The high isolation broadband antenna system according to claim 3, characterized in that: The two groups of first threaded rods (29) are symmetrically arranged. Each group of first threaded rods (29) is composed of two first threaded rods (29). The ends of one group of first threaded rods (29) are respectively fixedly connected to fixing disks (210). Second limiting grooves (211) are respectively opened at the ends of one group of fixing disks (210). The ends of the other group of first threaded rods (29) are respectively fixedly connected to first limiting bodies (212). The first limiting bodies (212) and the second limiting grooves (211) are arranged in a slidable matching manner.

5. The high isolation broadband antenna system according to claim 1, characterized in that: A limiting plate (24) is fixedly connected to one side of the main board (1) by bolts. A feeding device (25) is fixedly connected to the side of the limiting plate (24).

6. The high isolation broadband antenna system according to claim 5, characterized in that: The cleaning detection mechanism (3) includes a protective cover (11) fixedly arranged on the side of the main body plate (1). Inside the protective cover (11) on the side of the main body plate (1), two symmetrically arranged shielding cases (32) are fixedly connected. Motors (33) are respectively fixedly connected inside the two shielding cases (32). Third limiting grooves (35) are symmetrically formed at the upper end of the main body plate (1). The transmission shafts of the two motors (33) rotate through the main body plate (1). At the ends of the transmission shafts of the two motors (33), second threaded rods (34) are respectively fixedly connected inside the third limiting grooves (35). Third limiting bodies (36) are respectively arranged in a matching manner on the sides of the two second threaded rods (34). The sides of the two third limiting bodies (36) are slidably matched with the third limiting grooves (35). Flexible dust-proof cloths (31) covering the third limiting grooves (35) are respectively fixedly connected to the sides of the two third limiting bodies (36).

7. The high isolation broadband antenna system according to claim 6, characterized in that: Support plates (38) are respectively fixedly connected to the sides of the two third limiting bodies (36). A number of equally spaced second fixing bodies (37) are fixedly connected to the lower ends of the support plates (38). A number of brushes (313) are fixedly connected to the lower ends of each of the second fixing bodies (37). Second cavities (39) are formed at the lower ends of each of the second fixing bodies (37). Fourth limiting bodies (312) are hermetically and slidably matched inside the second cavities (39). Empty grooves (314) are formed at the lower ends of each of the fourth limiting bodies (312). Pressure sensors (315) are fixedly connected inside the empty grooves (314) of each of the fourth limiting bodies (312). Connecting rods (316) are respectively fixedly connected to the lower ends of each of the pressure sensors (315).

8. The high isolation broadband antenna system according to claim 7, characterized in that: Scraping blocks (317) are fixedly connected to the lower ends of each of the connecting rods (316). The scraping blocks (317) are in a wedge-shaped structure. Fourth limiting grooves (311) communicating with the second cavities (39) are formed inside each of the second fixing bodies (37). Limiting blocks (310) slidably matched with the fourth limiting grooves (311) are respectively fixedly connected to the sides of each of the fourth limiting bodies (312). Air inlet grooves (318) communicating with the second cavities (39) are formed on one side of each of the second fixing bodies (37).

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