CN210326146U - High-gain ground telemetering antenna - Google Patents

Abstract

The utility model belongs to an unmanned aerial vehicle telemetering measurement antenna, in order to solve the problem that when the unmanned aerial vehicle telemetering measurement antenna adopts a microstrip antenna in the prior art, the unmanned aerial vehicle telemetering measurement antenna is easy to be interfered by the outside under 2400MHz, and when the size is larger or expensive high-frequency dielectric plate is needed to be adopted, the cost is too high under 1400MHz, and if the antenna adopting other categories has large weight and high cost, a high-gain ground telemetering measurement antenna is provided, which comprises a plurality of square antenna array elements, a feed network, a reflecting back plate and an antenna housing; the antenna array elements are arranged in rows and columns, the antenna array elements in each column are sequentially connected through a feed network, and the antenna array elements in each column are connected in parallel through the feed network; the antenna array element and the feed network are of an integrated structure and are made of solid metal materials, and the thickness of the antenna array element is the same as that of the feed network; the antenna array elements are fixed above the reflecting back plate in parallel, the antenna array elements and the reflecting back plate are packaged in the antenna housing, and the reflecting back plate is made of solid metal materials; and a feed point is arranged at the center of the feed network and is connected with the reflection back plate through an SMA connector.

Description

High-gain ground telemetering antenna

Technical Field

The utility model belongs to unmanned aerial vehicle telemetering measurement antenna, concretely relates to high-gain ground telemetering measurement antenna.

Background

At present, industrial unmanned aerial vehicles are widely applied to various fields such as military, civil use and commercial use. In particular to the fields of petroleum and natural gas pipeline hunting, electric power hunting, logistics, mapping, environmental monitoring and the like. Wherein the unmanned aerial vehicle antenna all plays crucial effect in the aspect of increasing unmanned aerial vehicle's communication and picture transmission distance, data transmission distance in the aspect of unmanned aerial vehicle's security guarantee.

The existing unmanned aerial vehicle telemetering antenna capable of meeting the ultra-long distance transmission is a high-gain antenna, the antenna is matched with a private clothes rotary table, the telemetering antenna is installed on the rotary table, and the antenna is aligned to the direction of the flight of the unmanned aerial vehicle at any time in an unmanned aerial vehicle guiding mode. There are many types of such antennas, such as microstrip array antennas, horn reflector antennas, yagi antennas, and so on. Different antennas have different weights and sizes, and the matched turntables are different, so the cost is different. At present, a microstrip array antenna is mostly adopted as a telemetering antenna, the microstrip array antenna is light in weight and attractive in appearance, and is mostly used for 2400MHz high frequency bands in order to reduce the size, however, the telemetering receiver is easily interfered by surrounding WIFI and Bluetooth at the frequency band, so that a proper field needs to be repeatedly selected during each flight, the surrounding electromagnetic environment is monitored, and whether 2400MHz interference exists is determined.

The microstrip antenna has the following disadvantages in practical use: (1) the microstrip antenna can achieve high gain, small size and light weight when the frequency is 2400MHz, the bandwidth is enough, but the telemetering receiver is easily interfered by surrounding WIFI and Bluetooth; (2) when the frequency is reduced to 1400MHz, the sizes of the microstrip antenna array unit and the antenna are increased, in order to ensure the gain and reduce the size as much as possible, the number of array elements can be reduced during design, but expensive high-frequency dielectric plates must be selected, so that the cost of the antenna is greatly improved; if a conventional FR4 dielectric board is adopted, the number of array elements must be increased to ensure the gain, so that the size and the weight of the antenna are greatly increased; (3) the bandwidth of the microstrip antenna is narrow, and can be used satisfactorily at 2400MHz, but at 1400MHz, the conventional design method can only ensure the bandwidth of about 10MHz, and when the bandwidth is to be expanded, holes are required to be formed in the antenna unit or other designs are required, so that the simulation and the design are complicated, the test and debugging cost is greatly increased, and the design period is long.

If the antennas of other types are selected, the weight is overlarge under the condition of meeting the performance, meanwhile, the bearing capacity of the private clothes turntable is increased, the cost is correspondingly increased, and the installation and the carrying are very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main objective is when solving among the prior art unmanned aerial vehicle telemetering measurement antenna and adopting microstrip antenna, easily receives external disturbance under 2400MHz, and 1400MHz is great in size down or must adopt expensive high frequency dielectric plate with too high costs, if adopt the big high problem of cost of other categorised antenna weight, provides a high-gain ground telemetering measurement antenna.

In order to achieve the above object, the utility model provides a following technical scheme:

a high-gain ground telemetering antenna is characterized by comprising a feed network, a reflecting back plate, an antenna housing and a plurality of square antenna array elements; the antenna array elements are arranged in rows and columns, the antenna array elements in each column are sequentially connected through a feed network, and the antenna array elements in each column are connected in parallel through the feed network; the antenna array element and the feed network are of an integrated structure and are made of solid metal materials, and the thickness of the antenna array element is the same as that of the feed network; the antenna array elements are fixed above the reflecting back plate in parallel, the antenna array elements and the reflecting back plate are packaged in the antenna housing, and the reflecting back plate is made of solid metal materials; and a feed point is arranged at the center of the feed network and is connected with the reflection back plate through an SMA connector.

Furthermore, the device also comprises a plurality of support columns made of ABS materials; the center of the antenna array element is provided with a first through hole, the reflection back plate is provided with a second through hole at a position corresponding to the first through hole, both ends of the support column are provided with threaded holes, the support column is arranged between the reflection back plate and the antenna array element, and the threaded holes at both ends are respectively opposite to the first through hole and the second through hole; one end of the supporting column is fixed with the reflection back plate through a screw, and the other end of the supporting column is connected with the antenna array element through a screw. The installation distance and the parallelism of the antenna array and the reflection back plate are ensured.

Furthermore, the screw is a metal screw below M4, and the geometric center of all antenna elements is guaranteed to be high-frequency zero potential.

Further, the SMA connector includes an inner conductor, a dielectric, and a flange; a third through hole with the same diameter as the inner conductor is formed at the feed point, and a fourth through hole is formed at the position of the reflection backboard corresponding to the third through hole; one end of the medium penetrates through the fourth through hole, and the other end of the medium is attached to the back of the feed point; the flange is sleeved and fixed outside the medium, two threaded holes are formed in two sides of the fourth through hole, and the flange is fixed on the back face of the reflection back plate in a matched mode through bolts and the threaded holes; one end of the inner conductor penetrates through the third through hole to be fixed on the top of the medium, threads are arranged on the outer portion of the other end of the inner conductor, a nut is connected to the outer portion of the inner conductor in a matched mode with the threads, and the nut is attached to the front face of the feed network.

Furthermore, the antenna array element, the feed network and the reflection back plate are all made of aluminum, so that the quality and the design cost of the antenna are further reduced.

Further, the side length of the antenna array element is equivalent to half of the wavelength of the preset coverage frequency band.

Furthermore, the antenna housing is made of ABS or epoxy glass cloth and is a low-loss medium, and the performance of the antenna is not affected.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses high-gain ground telemetering antenna, through the size of adjustment antenna array element, the distance of antenna array and reflection backplate, can widen the bandwidth and satisfy the bandwidth requirement; in addition, the antenna array element and the feed network are of an integrated structure, so that the antenna does not need to be welded in the processing process, the debugging and welding processes are omitted, the processing efficiency is improved, and the design cost of the telemetering antenna is reduced; the utility model discloses a design that telemetering measurement antenna passed through antenna array element makes the antenna homoenergetic work under 2400MHz and 1400MHz, and compromise the advantage that the size is little, light in weight, with low costs and convenient to carry simultaneously. In addition, the array of the antenna array elements can meet the requirement of high gain, an expensive high-frequency dielectric plate is not needed, and the processing cost is further reduced by the reflecting back plate made of the solid metal material.

2. The utility model discloses a set up the support column between every antenna array element and reflection backplate, guaranteed the installation distance and the depth of parallelism of antenna array and reflection backplate.

3. The utility model discloses a metal screw below M4 fixes antenna array element, guarantees that the geometric center of all antenna array elements all is high frequency zero potential.

4. The utility model discloses well antenna array element, feed network and reflection backplate all adopt the aluminium material that the quality is lighter, when not influencing the antenna performance, have further reduced the design cost of antenna.

5. The utility model discloses a ABS or the epoxy glass cloth of low-loss medium can not cause the influence to the performance of antenna as the antenna house material, play the guard action to the antenna simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of a high-gain ground telemetry antenna of the present invention;

fig. 2 is a schematic structural diagram of the antenna array of the present invention;

fig. 3 is a schematic structural view of the reflective back plate of the present invention;

fig. 4 is a schematic structural diagram of a first embodiment of the present invention;

fig. 5 is a schematic diagram of simulation results of the surface current amplitude of the antenna array according to the first embodiment of the present invention;

fig. 6 is a schematic diagram of simulation results of the surface current direction of the antenna array according to the first embodiment of the present invention;

fig. 7 is a schematic diagram of a standing-wave ratio simulation result of an antenna array according to a first embodiment of the present invention;

fig. 8 is a directional diagram of an antenna array according to a first embodiment of the present invention;

fig. 9 is an antenna array pattern according to a second embodiment of the present invention;

fig. 10 is an impedance diagram of an antenna array according to a second embodiment of the present invention;

fig. 11 is a schematic diagram of a standing-wave ratio simulation result of an antenna array according to a second embodiment of the present invention;

fig. 12 is a return loss diagram of an antenna array according to a second embodiment of the present invention;

fig. 13 is a schematic structural view of a third embodiment of the present invention;

fig. 14 is an antenna array pattern according to a third embodiment of the present invention;

fig. 15 is a return loss diagram of an antenna array according to a third embodiment of the present invention;

fig. 16 is an impedance diagram of an antenna array according to a third embodiment of the present invention;

fig. 17 is a schematic diagram of a standing-wave ratio simulation result of an antenna array according to a third embodiment of the present invention;

fig. 18 is a schematic structural diagram of a fourth embodiment of the present invention;

fig. 19 is a return loss diagram of an antenna array according to a fourth embodiment of the present invention;

fig. 20 is an impedance diagram of an antenna array according to a fourth embodiment of the present invention;

fig. 21 is a schematic diagram of a standing-wave ratio simulation result of an antenna array according to a fourth embodiment of the present invention;

fig. 22 is an antenna array pattern according to a fourth embodiment of the present invention.

Wherein, 1-antenna array element; 2-a feed network; 3-a reflective back plate; 4-an antenna housing; 5-a feeding point; 6-support column; 7-a first via; 8-a second via; 9-a screw; 10-SMA connectors; 101-an inner conductor; 102-a medium; 103-a flange; 104-a nut; 11-an antenna array; 12-a fourth via; 13-a threaded hole; 14-third via.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are not intended to limit the present invention.

As shown in fig. 1 and fig. 2, a high-gain ground telemetry antenna includes a plurality of square antenna elements 1, a feed network 2, a reflective back plate 3 and an antenna housing 4; the antenna array elements 1 are arranged in rows and columns, the antenna array elements 1 in each column are sequentially connected through the feed network 2, and the antenna array elements 1 in each column are connected in parallel through the feed network 2; the antenna array element 1 and the feed network 2 are of an integrated structure and are made of solid metal materials, and the thickness of the antenna array element 1 is the same as that of the feed network 2; the antenna array element 1 is fixed above the reflecting back plate 3 in parallel, the antenna array element 1 and the reflecting back plate 3 are packaged in the antenna housing 4, and the reflecting back plate 3 is made of solid metal; the center of the feed network 2 is provided with a feed point 5, and the feed point 5 is connected with the reflective back plate 3 through an SMA connector 10.

The radiation mechanism of the telemetry antenna is based on leakage of high frequency electromagnetic fields. If the electromagnetic field is not completely sealed by the conductor, electromagnetic radiation leakage can be generated at the discontinuous part, and under a certain frequency, the electromagnetic field adopts the metal sheet, so that the radiation can be obviously enhanced when the electromagnetic field works in a resonance state, and the radiation efficiency can be greatly improved. Based on the principle, the antenna array element 1 and the feed network 2 are of an integrated structure in the embodiment, and are made of solid metal materials, so that a PCB (printed circuit board) does not need to be thrown, and only the metal plate needs to be cut and formed, so that the gain of the antenna is greatly improved. Two metal plates are used as the antenna, one of the two metal plates is used as the reflecting back plate 3, the other metal plate is used as the antenna array element 1 and the feed network 2, and air is used as a medium, so that an expensive high-frequency dielectric plate is omitted. The distance between the antenna array element 1 and the reflecting back plate can be freely adjusted to adjust the resonant frequency, impedance and bandwidth. Meanwhile, the antenna adopts a series feed mode, and the feed network 2 also adopts a metal plate to form vertical polarization.

As shown in fig. 1 to 3, the antenna array element 1 is fixed above the reflective backplane 3 in parallel, and further includes a plurality of support pillars 6 made of ABS material; a first through hole 7 is formed in the center of the antenna array element 1, a second through hole 8 is formed in the position, corresponding to the first through hole 6, of the reflection back plate 2, threaded holes are formed in two ends of the supporting column 6, the supporting column 6 is arranged between the reflection back plate 3 and the antenna array element 1, and the threaded holes in the two ends are opposite to the first through hole 7 and the second through hole 8 respectively; one end of the support column 6 is fixed with the reflection back plate 3 through a screw 9, and the other end is connected with the antenna array element 1 through the screw 9.

In addition, the specific connection mode of the SMA connector 10 is that the SMA connector 10 includes an inner conductor 101, a dielectric 102 and a flange 103; a third through hole 14 with the same diameter as that of the inner conductor 101 is formed in the feeding point 5, and a fourth through hole 12 is formed in the position of the reflection back plate 3 corresponding to the third through hole 14; one end of the medium 102 penetrates through the fourth through hole 12, and the other end is attached to the back of the feeding point 5; the flange 103 is fixedly sleeved outside the medium 102, two threaded holes 13 are formed in two sides of the fourth through hole 12, and the flange 103 is fixed on the back face of the reflection back plate 2 in a matched mode through bolts and the threaded holes 13; one end of the inner conductor 101 penetrates through the third through hole 14 to be fixed to the top of the medium 102, the outer portion of the other end of the inner conductor is provided with threads, the nut 104 is connected to the outer portion of the inner conductor 101 in a matched mode with the threads, and the nut 104 is attached to the front face of the feed network 2.

As shown in fig. 1 and fig. 2, H is a distance between the antenna array 11 and the reflective backplane 3, and a value of H can affect a standing-wave ratio of the antenna; t is the width of the feed network 2; l is the length of the antenna array element 1 and is used for adjusting the resonant frequency; w is the width of the antenna array element 1 and is used for adjusting the standing-wave ratio of the antenna; the values of H, t, W and L can be determined according to the use requirement through HFSS simulation design.

The specific manufacturing process of the telemetering antenna comprises the following steps:

(1) selecting a proper solid metal plate according to requirements, determining the size of the antenna, and determining values of H, t, W and L according to simulation design;

(2) cutting by a cutting machine or a carving machine to obtain an integrated antenna array element 1 and a feed network 2, namely an antenna array 11;

(3) a third through hole 14 is formed in the middle of the feed network 2 in the center of the antenna array 11, and the size of the third through hole 14 is the same as the outer diameter of the inner conductor 101;

(4) punching a hole at the center of each antenna array element 1 to obtain a first through hole 7, and punching a hole at a corresponding position on the reflecting back plate 3 to be marked as a second through hole 8;

(5) placing the antenna array element 1 above the reflecting back plate 3, fixing the antenna array element by mounting screws 9 and support columns 6 according to the figure 1, and fixing the SMA connector; the geometric centers of all the antenna elements 1 of the metal plate are high-frequency zero potential, can be insulated or electrically connected, and cannot influence the performance of the telemetering antenna, and if the screw 9 is made of metal, a screw below M4 is preferred.

(6) Installing an SMA connector 10 at the feed point 5, and screwing a nut 104 outside the inner conductor 101 to enable the nut 104 to be tightly attached to the upper surface of the feed point 5;

(7) the antenna housing 4 adopting a low-loss medium is installed on the reflecting back plate 3 in a matching way and can be sealed on the reflecting back plate 3 in an adhesive way.

Example one

As shown in fig. 4, the antenna of the single antenna array element 1 is manufactured by using a whole aluminum plate to obtain the whole of the antenna array element 1 and the feed network 2, and is fixed by using a support column 6 and an SMA connector 10, the feed point 5 transmits energy to the feed network 2 through the SMA connector 10, and the feed network 2 transmits the energy to the antenna array element 1 and radiates outwards. According to the simulation result of the surface current amplitude of the antenna array 11 shown in fig. 5, the geometric centers of the antenna elements 1 are all high-frequency zero potentials, and can be insulated and electrically connected, so that the performance of the antenna is not affected. As a result of simulation of the surface current direction of the antenna array 11 shown in fig. 6, the surface current of the antenna element 1 varies up and down, and therefore, the antenna is a vertically polarized antenna and is more suitable for receiving an airborne vertically polarized electromagnetic signal.

According to engineering experience, the frequency range with the standing-wave ratio of the antenna being less than 2 is the bandwidth of the antenna. As can be seen from the antenna array standing-wave ratio simulation result shown in fig. 7, the bandwidth of the antenna array in this embodiment is 65MHz, which is sufficient for the drone telemetry antenna to perform high-definition video transmission application. As with the antenna array pattern of fig. 8, the antenna array gain of this embodiment is 10 dBi. The telemetering antenna of the embodiment is applied to a 1.43GHz frequency band of a legal unmanned aerial vehicle, W is 96mm, L is 90mm, H is 5.5mm, and the edge of the reflection back plate 3 exceeds 30mm than that of the antenna array 11 according to each edge.

Example two

In order to further improve the gain of the telemetry antenna, the whole aluminum plate with the thickness of 2mm is adopted to be processed to obtain the whole of the antenna array element 1 and the feed network 2, the antennas of the single antenna array element 1 in the first embodiment are arrayed to obtain a 2 x 2 antenna array 11 shown in fig. 2, and the assembling method is the same as that of the first embodiment. The distance between each antenna array element 1 is half wavelength of the preset frequency band. As can be seen from the antenna array pattern shown in fig. 9, the maximum gain of the antenna array 11 in this embodiment is greater than 15 dBi.

EXAMPLE III

Also in order to increase the gain of the telemetry antenna, 4 × 2 arrays are formed on the basis of the first embodiment, a whole 4mm thick aluminum plate is used for processing to obtain the whole antenna array element 1 and the whole feed network 2, and the antenna array 11 shown in fig. 13 is obtained according to the same installation method as the first embodiment. The low-loss ABS material antenna housing 4 is matched and arranged on the reflection back plate 3 and sealed by glue.

Example four

2 x 4 array formation is performed on the basis of the first embodiment, the whole of the antenna array element 1 and the feed network 2 is obtained by processing the whole aluminum plate with the thickness of 3mm, and the antenna array 11 shown in fig. 18 is obtained by the same installation method as the first embodiment. The low-loss antenna housing 4 made of epoxy glass cloth is installed on the reflecting back plate 3 in a matching mode and sealed by glue.

As can be seen from fig. 14 and 22, the gain of the antenna array 11 in the third and fourth embodiments is greater than 18 dBi. As shown in fig. 11, 17, and 21, the standing wave ratios of the antenna arrays in the second to third embodiments are all less than 2, which satisfies the defined frequency band of the drone and also satisfies the use of the data link signal of the drone. Fig. 10, 16 and 20 are antenna array impedance diagrams of the second, third and fourth embodiments, respectively, for an antenna, a ratio of voltage to current at an input end of the antenna is referred to as an input impedance of the antenna, and a voltage standing wave ratio on a feed network is also commonly used to represent impedance characteristics of the antenna, generally, the input impedance of the antenna is a complex number, a real part is referred to as an input resistance, a real part is referred to as an input reactance, and Xi represents that the closer the real part is to 50 ohms, the better the imaginary part is matched with 0, and as can be seen from fig. 10, 16 and 20, the second to fourth embodiments all satisfy the above requirements, and the matching degree is better. Fig. 12, 15 and 19 are return loss graphs of the antenna arrays of the second, third and fourth embodiments, respectively, where the return loss is also called reflection loss, and the reflection loss is better as the reflection loss is smaller due to reflection caused by impedance mismatch, and the engineering requirement is generally less than-10 dB, and it can be known from fig. 12, 15 and 19 that the return loss of the antenna arrays of the second to fourth embodiments is much less than-10 dB, so as to meet the use requirement.

The utility model discloses a telemetering measurement antenna can carry out arbitrary group's battle array as required, improves antenna gain through group battle array. Each antenna array element 1 needs to determine the length and the width through simulation, so that the resonant frequency covers a preset frequency band, and the length and the width of each antenna array element 1 are equivalent to about half a wavelength. In addition to the first to fourth embodiments, aluminum is used as the reflective back plate 3, the antenna array element 1 and the feeding network 2, and other solid metal materials such as iron plate, steel plate or copper plate may also be used, in the embodiments, since the aluminum plate is cheap and convenient to process, the thickness of the selected solid metal material may be selected according to the requirement, and may also be 1mm or 0.5 mm.

The utility model discloses a high-gain ground telemetering measurement antenna has the gain higher than microstrip array antenna and other classification antennas, and the bandwidth is widened 2-3 times. In addition, expensive large-size PCB (printed circuit board) does not need to be processed, only a thin metal plate is adopted for simple machining, the processing cost is reduced to the maximum degree, welding is not needed in the processing process, assembly is extremely simple, and a series of problems of complex assembly and debugging, heavy weight, large size, high cost, narrow bandwidth, inconvenience in mounting and carrying and the like are solved.

The above is only the embodiment of the present invention, and is not the limitation of the protection scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (7)

1. A high gain surface telemetry antenna, characterized by: the antenna comprises a feed network (2), a reflection backboard (3), an antenna housing (4) and a plurality of square antenna array elements (1);

the antenna array elements (1) are arranged in rows and columns, the antenna array elements (1) in each column are sequentially connected through the feed network (2), and the antenna array elements (1) in each column are connected in parallel through the feed network (2); the antenna array element (1) and the feed network (2) are of an integrated structure and are made of solid metal materials, and the thickness of the antenna array element (1) is the same as that of the feed network (2);

the antenna array element (1) is fixed above the reflecting back plate (3) in parallel, the antenna array element (1) and the reflecting back plate (3) are packaged in the antenna housing (4), and the reflecting back plate (3) is made of solid metal materials;

the center of the feed network (2) is provided with a feed point (5), and the feed point (5) is connected with the reflective back plate (3) through an SMA connector (10).

2. A high gain surface telemetry antenna as claimed in claim 1, wherein: the ABS plastic material also comprises a plurality of support columns (6) made of ABS material; a first through hole (7) is formed in the center of the antenna array element (1), a second through hole (8) is formed in the position, corresponding to the first through hole (7), of the reflection backboard (3), threaded holes are formed in two ends of the supporting column (6), the supporting column (6) is arranged between the reflection backboard (3) and the antenna array element (1), and the threaded holes in the two ends are opposite to the first through hole (7) and the second through hole (8) respectively; one end of the supporting column (6) is fixed with the reflection back plate (3) through a screw (9), and the other end of the supporting column is connected with the antenna array element (1) through the screw (9).

3. A high gain surface telemetry antenna as claimed in claim 2, wherein: the screw (9) is a metal screw below M4.

4. A high gain surface telemetry antenna as claimed in claim 1, wherein: the SMA connector (10) comprises an inner conductor (101), a dielectric (102) and a flange (103);

a third through hole (14) with the same diameter as that of the inner conductor (101) is formed in the feeding point (5), and a fourth through hole (12) is formed in the position, corresponding to the third through hole (14), of the reflection backboard (3);

one end of the medium (102) penetrates through the fourth through hole (12), and the other end of the medium is attached to the back of the feeding point (5);

the flange (103) is fixedly sleeved outside the medium (102), two threaded holes (13) are formed in two sides of the fourth through hole (12), and the flange (103) is fixed on the back face of the reflection back plate (3) in a matched mode through bolts and the threaded holes (13);

one end of the inner conductor (101) penetrates through the third through hole (14) to be fixed to the top of the medium (102), threads are arranged on the outer portion of the other end of the inner conductor, the nut (104) is connected to the outer portion of the inner conductor (101) in a matched mode with the threads, and the nut (104) is attached to the front face of the feed network (2).

5. A high gain surface telemetry antenna as claimed in claim 1, wherein: the antenna array element (1), the feed network (2) and the reflection backboard (3) are all made of aluminum.

6. A high gain surface telemetry antenna as claimed in claim 1, wherein: the side length of the antenna array element (1) is equivalent to half of the wavelength of a preset coverage frequency band.

7. A high gain surface telemetry antenna as claimed in claim 1, wherein: the antenna housing (4) is made of ABS or epoxy glass cloth.

Images