RU2276437C2 - Flat antenna array (alternatives) - Google Patents

Abstract

FIELD: flat antenna arrays for direct reception of satellite television programs.

SUBSTANCE: new design solution of hollow waveguide is used to produce antenna array for receiving signals of different polarization characterized in high efficiency and low noise temperature within broad frequency band thereby enabling disposition of two power supply systems of antenna array at different levels; these power systems have parallel power circuits for radiating components with common output for receiving differently polarized signals. Various types of single highly effective radiators of reverse-radiation antennas as well as double-mirror zoned antennas incorporating slow-wave connecting strip whose thickness equals maximum half the wavelength can be used as radiating components of flat antenna array.

EFFECT: simplified design, enhanced reliability, facilitated manufacture, and reduced cost of antenna array.

4 cl, 13 dwg

Description

The invention relates to radio engineering, microwave technology, to antenna-feeder devices, and more particularly to flat antenna arrays for direct reception of satellite television.

Currently, work is underway to create flat antennas that are compatible with modern electronic equipment intended for direct reception of satellite television, having an efficiency of more than 0.8 with aperture sizes ranging from 15 to 30 wavelengths operating in the operating frequency band up to 18% with all circular or linear polarizations. In addition, these antennas should have a small thickness, simple design, high manufacturability and repeatability of sizes and parameters, low cost.

Microstrip antennas are known for producing two polarizations, containing a dielectric board, on one side of which shielding (grounding) metallization is made, and on the other side, radiating elements and emitter power supply systems for both polarizations are printed [1, 2, 3].

The advantage of such antennas is the simplicity of design: the power supply systems of the emitters for both polarizations are made on the same surface of one dielectric board without intersections.

The main disadvantage of such antennas is significant losses in the power supply systems, the impossibility of using one converter with a common input for signals of two polarizations, and the relative narrowband of 5-7%.

Known flat antenna arrays, slot emitters which are made on the basis of strip waveguides in a printed version, and the waveguide-feeder system is made in the form of rectangular grooves in the base. This design, after assembling the substrate of the emitters with this base, makes it possible to obtain hollow rectangular waveguides and, accordingly, very small losses in the power supply system. The efficiency of such antenna arrays is at least 80%. However, the design does not allow the reception of signals of two polarizations. In addition, it is not possible to receive circular polarization signals [4].

Closest to the proposed technical solution is a flat antenna array and microstrip emitter. In a flat antenna array, return radiation antennas (AOIs) are used as emitting elements. As a feeder power system, strip lines located on a common board and forming two power circuits of the AOI exciting elements with a common output. This antenna array allows you to simultaneously receive signals of two linear or two circular polarizations (depending on the position of the converter) has an efficiency of at least 65%, a simple design and high adaptability. The thickness of the antenna without a converter does not exceed 30 mm [5, 6, 7].

However, the use of feeder-strip lines with antenna aperture sizes of at least 450 × 450 mm, which is necessary for high-quality reception of signals from modern satellites, does not allow to obtain losses in these lines of less than 1.2 ÷ 1.5 dB. This leads to the fact that even with a very high efficiency of the radiating element of the array (over 90%), the efficiency of the entire antenna does not exceed 70%, and the noise temperature of the antenna is 90 ÷ 100K, which is much more than the noise temperature of parabolic antennas of the same size ( 40 ÷ 60K).

All this limits the use of such flat antenna arrays as an alternative to parabolic antennas.

The technical task of the present invention according to claim 1 is the creation of a flat antenna array for receiving signals of various polarizations, which would ensure simplicity and reliability of the design, high manufacturability and low cost while maintaining a high efficiency and low noise temperature in a wide frequency band . The solution is achieved by using a new structural element - a hollow strip waveguide and the possibility of arranging two antenna array power systems with parallel power circuits for radiating elements and having a common output for receiving signals of different polarizations. As radiating elements of a planar antenna array, it is possible to use various types of single high-performance emitters of a reverse radiation antenna (AOI).

The problem according to claim 1 is solved by a flat antenna array, made in the form of a multilayer structure, consisting of a protective dielectric cover placed one above the other, on the inner surface of which there is an array with reflective elements placed in nodes of a rectangular coordinate grid in the form of groups of conductive pads made in the form of squares and separated by conductive partitions into cells, conductive boards with many radiating holes and protrusions, the centers of which x coincide with the centers of the cells, forming single emitters of the antenna array in the form of return radiation antennas, a dielectric plate and a conductive plate with many holes and protrusions, containing two power systems for single emitters and an outlet located in the center of a flat antenna array, into which a dielectric plate located between the conductive plate and the antenna array body, the middle nodes are placed symmetrically relative to the center at an equal distance from each other hollow-strip waveguides with protrusions, while on the surface of the conductive plate facing the dielectric plate, at the same distance from the perimeter there are small nodes of hollow-strip waveguides with protrusions, and a large node of hollow-strip waveguides with protrusions is placed in its center moreover, of these, in two coaxial input waveguides, dielectric inserts are installed to hold the H ₁₀ wave in phase by an angle Δφ = -90 °, or of which two input coaxial waveguides have a certain smaller wide wall size for acceleration wave H ₁₀ in phase by Δφ = 90 ° at the average frequency of the operating frequency range, while on both surfaces of the conductive plate, a varnish or laminator was used as a dielectric coating.

The technical task of the present invention according to claim 2 is the creation of a flat antenna array for receiving signals of various polarizations, which would ensure simplicity and reliability of the design, high manufacturability and low cost while maintaining high efficiency and low noise temperature in a wide frequency band . As emitting elements of a planar antenna array, in this embodiment, it is possible to use two-mirror zoned antennas with a retarding structure of horn antennas having a thickness of not more than half the wavelength.

The task according to claim 2 is solved by a flat antenna array made in the form of a multilayer structure consisting of a protective dielectric cover placed one above the other, on the inner surface of which reflective elements are placed, a dielectric plate and a conductive plate with many holes and protrusions containing two power systems for single emitters and an outlet located in the center of a flat antenna array into which large mirrors of two-mirror zoned are introduced antennas with a retarding comb, which are installed at a certain distance from the inner surface of the protective dielectric cover, and above them are placed a dielectric plate and a conductive plate with many holes and protrusions, the centers of which coincide with the centers of the holes made in large mirrors, while installed above the conductive plate a dielectric plate located between the conductive plate with many holes and protrusions and the antenna array housing, and on its surface facing the housing antenna array, symmetrically relative to the center at an equal distance from each other, the middle nodes of the hollow-strip waveguides with protrusions are placed, under the conductive plate on the dielectric plate in its center is a large node of the hollow-strip waveguides with protrusions, moreover, they are installed in two coaxial input waveguides dielectric inserts for retaining the H ₁₀ wave in phase by an angle Δφ = -90 °, or of which two input coaxial waveguides have a smaller wide wall size for a certain extent to accelerate the H ₁₀ wave in phase at an angle Δφ = 90 ° at the middle frequency of the operating frequency range, while the reflecting elements are made in the form of conductive protrusions - small mirrors of two-mirror zoned antennas, and varnish or a laminator are used as a dielectric coating on both surfaces of the conductive plate and the surfaces of the protrusions of strip waveguides.

The analysis of the prior art, including a search by patents and scientific and technical sources of information and identification of sources containing information about analogues of the claimed invention, allows us to establish that the applicant has not found technical solutions characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype made it possible to identify a set of essential (with respect to the technical result perceived by the applicant) distinctive features in the claimed object set forth in the claims.

Therefore, the claimed invention meets the requirement of "novelty" under applicable law.

Information on the prominence of the distinguishing features regarding the use of strip-hollow waveguides for performing two power systems simultaneously for different polarizations (elliptical, two circular and / or two linear) on the same surface of a single dielectric board with parallel power supply of exciting elements with a common output located in the central parts of the antenna array are not available.

Based on this, it was concluded that the invention meets the criterion of "inventive step".

Figure 1 shows a flat antenna array without a housing, made according to the invention in a rectangular isometric view;

figure 2 shows a variant of a planar antenna array in section with a radiating element in the form of a return radiation antenna;

figure 3 is a variant of a flat antenna array in section with a radiating element in the form of a two-mirror zoned antenna with a slowing structure;

figure 4 - hollow-strip waveguide in a rectangular isometric projection;

figure 5 is a large hollow-strip waveguide, top view;

Fig.6 is a large hollow-strip waveguide, made according to the invention with slow-down dielectric inserts;

Fig.7 is a fragment of a large hollow-strip waveguide with reduced dimensions of the wide walls of the input waveguides;

on Fig - hollow-strip waveguide in section with deposited on the outer surface of the protrusion of the dielectric coating;

Fig.9 is a hollow-strip waveguide in a section with a dielectric coating deposited on both surfaces of the conductive plate;

figure 10 shows the dependence of the gain of a flat antenna array with a single emitter in the form of a reverse radiation antenna for circular polarization signals (curve 1 for right circular polarization, curve 2 for left circular polarization);

figure 11 shows the polarization isolation in the frequency range of a flat antenna array with a single emitter in the form of a reverse radiation antenna for circular polarization signals (curve 1 for right circular polarization, curve 2 for left circular polarization);

on Fig - dependences in the frequency range of the gain of a flat antenna array with a single emitter in the form of a two-mirror zoned antenna with a grounding structure for circular polarization signals (curve 1 for right circular polarization, curve 2 for left circular polarization);

Fig. 13 shows the dependences in the frequency isolation range of the polarization of a flat antenna array with a single emitter in the form of a two-mirror zoned antenna with a delay structure for circular polarization signals (curve 1 for right circular polarization, curve 2 for left circular polarization).

A flat antenna array (Figs. 1, 2, 3), made in the form of a multilayer structure, consists of a protective dielectric cover 1 placed one above the other, on the inner surface of which there is an array with reflecting elements 2 placed in nodes of a rectangular coordinate grid in the form of groups conductive platforms 3, made in the form of squares, and separated by conductive partitions 4 into cells, conductive boards 5 (Fig. 1, 2) with a plurality of radiating holes 6 and protrusions 7 to improve communication (Fig. 2), the centers of which coincide give with the centers of the cells, forming single emitters of the antenna array in the form of return radiation antennas, a dielectric plate 8 and a conductive plate 9 with many holes 10, 11 and protrusions 12, containing two power systems for single emitters (pos. not specified) and the outlet 13 located in the center of a flat antenna array. An additional dielectric plate 14 is installed, located between the conductive plate 9 and the antenna array body 15, and on its surface facing the antenna array body, the middle nodes of the hollow-strip waveguides 16 with projections 17 are placed symmetrically with respect to the center. on the surface of the conductive board 5, facing the dielectric plate 8, small nodes of hollow-strip waveguides 18 with protrusions 7 (Figs. 1, 2) are placed along the perimeter at an equal distance from each other, and a large the hollow-strip waveguide assembly 19 with protrusions 7, of which dielectric inserts 20 are installed in two coaxial input waveguides (Fig. 6), and the other two coaxial input waveguides have a smaller size of wide wall 21 for a certain extent, while on both surfaces the conductive plate 9, the dielectric plate 22 is made in the form of a film of varnish or laminate. As feeder lines in a flat antenna array, a hollow-strip waveguide is used (Fig. 4), the wide walls of which are parts of the conductive board 5 and plate 9. The inner surfaces of the narrow walls 23, 24 of the hollow-strip waveguides 25, 26, 27, 28 are made of the conductive material and have galvanic contact with one of the wide walls, which is part of the conductive board 5 (Fig.4, 5, 8, 9). Another wide wall is part of the conductive plate 9, separated from the narrow walls 23, 24 by the dielectric plate 8.

For the propagation of the wave H ₁₀ in such a waveguide, it is necessary that in the planes lying relative to the longitudinal axis of the hollow-strip waveguide O ₁ -O ₁ (Fig. 4), at a distance approximately equal to half the width of the waveguide a / 2, zero boundary conditions E _y = 0.

For this, narrow walls 23, 24 of the waveguide are made on the inner wall with protrusions 28, 29 having a height b approximately equal to the height of the hollow-strip waveguide 25 and a width l, which is selected from the conditions

,

,

where λ _{about max} - the maximum wavelength of the working frequency range;

εr is the relative dielectric constant of the dielectric plate 8. On the entire length of the protrusions 28, 29, grooves 30 are made of a width d = 0.04 ÷ 0.3λ _{o max} and a depth h = 0.03 ÷ 0.2λ _{o max} with a step L = 0, 1 ÷ 0.3λ _{o max} . These grooves divide the upper metallized surface 31 into a plurality of pieces of strip lines (pos. Not indicated) with a width W = Ld and a length l approximately equal to a quarter of the wavelength in the dielectric with εr.

Instead of the dielectric plates 8 and 14, separating the small, medium and large waveguide nodes from the conductive boards 5 and the plate 9, on the surface of the protrusions 28 and 29, the dielectric plates are made in the form of a film of varnish or laminate 31 (Figs. 4, 8). Accordingly, the coating 22 can be applied on the surface of the conductive plate 9 (Fig.9).

Between the dielectric cover 1 and the housing 15 of the flat antenna array, a sealing rubber roller 32 is installed.

As a radiating element of a flat antenna array, in another embodiment, a two-mirror zoned antenna 33 with a retarding comb 34, reflecting elements made in the form of conductive protrusions 35 and small mirrors 36 of two-mirror zoned antennas can be used. The use of a two-mirror zoned antenna 33 with a grounding comb 34 with dimensions of a large mirror D _zer = 4 ÷ 5λ _{o max} and a height H _zer ≤0.5λ _{o max} as a single emitter of a flat antenna array allows us to simplify the proposed design and not to use small hollow nodes in it -strip waveguides 18, and also not to install a dielectric plate 8 and a conductive board 5.

Flat antenna array operates as follows.

Consider a single emitter of a flat antenna array in transmission mode. When a flat antenna array is excited by wave H _{11, the} wave through the hole 13 in the conductive plate 9 enters the turnstile connection 37 of the waveguides 25, 26, 27, 28 of a large node of the hollow-strip waveguides 19 and depending on the position of the central polarization vector E of the H ₁₁ wave relative to the longitudinal axes of the waveguides 25, 26, 27, 28, both pairs 25, 26 or 27, 28 of coaxial waveguides are energized if the vector E of the wave H ₁₁ lies along their longitudinal axes, and all the waveguides 25, 26, 27, 28 of the turnstile connection 37, if the vector E of the wave H ₁₁ is at an angle φ, where 0 <φ <90 ° to their longitudinal axes. Moreover, if the vector E of the incident wave H ₁₁ lies along the longitudinal axes of the waveguides 25 and 26, then equal-amplitude and antiphase waves H ₁₀ are excited in these waveguides, which through the corresponding “H” tees 38 pass 40, and then through the corresponding holes in the conductive plate 9, through the middle nodes of the hollow-strip waveguides 16, through the holes 10 in the conductive plate 9, through the small nodes of the hollow-strip waveguides 18 and through the corresponding radiating holes 6 in the conductive board 5, excite in each element and in the entire antenna heel wave vertical (V) polarization. When the vector E of the incident H ₁₁ wave rotates 90 ° from its previous position (φ = 90 °), waveguides 27, 28 are initially excited in the antenna array, and a horizontal (H) polarized wave is excited in the entire antenna array.

When the vector E is rotated through an angle φ ₁ = 45 ° or by an angle φ ₂ = 135 ° relative to the initial position (the longitudinal axis of the waveguides 25, 26), waves with the same amplitude and in-phase with both horizontal and vertical polarization are excited in a flat antenna array .

As a result, a planar antenna array emits a linearly polarized wave lying in a plane passing through one of the diagonal axes of the antenna. If a phase shift is made between horizontally and vertically polarized waves by an angle Δφ = ± 90 ° using dielectric inserts 20 (Fig. 6) or with reduced dimensions of the wide walls 21 of the waveguides (Fig. 7), circularly polarized waves are excited in a planar antenna array. If the vector E is rotated through an angle φ ₁ = 45 ° relative to the longitudinal axis of the waveguides 25, 26, a left circular polarization (LC) wave is excited, if the vector E is rotated through an angle φ ₂ = 135 ° (-45 °) relative to the longitudinal axis of the waveguides 25, 26 a right circular polarization (RC) wave is excited.

For other positions of the vector E of the incident wave H ₁₁ , other than 0 °, 45 °, 90 °, 135 °, relative to the longitudinal axes of the waveguides 25, 26, elliptical polarization waves are excited in a flat antenna array, with 0 <æ <1, where - æ coefficient of ellipticity.

When the waveguide is operating on the protrusions 28, 29 of the strip lines, a TEM type wave is excited on the outer narrow wall 24, the strip line 29 opens and an idle mode is formed (Fig. 4). On the inner wall of the protrusion, more precisely near it, zero boundary conditions are satisfied for the electric field E _y = 0. There appears a galvanic contact between the narrow walls 23 of the hollow-strip waveguide 25 and the upper wide wall of the conductive plate 9, despite the fact that the upper wide wall of the conductive plate 9 is separated from the narrow walls 23 and 24 by the dielectric plate 8. With the correctly selected dimensions of the waveguides, the protrusions and grooves in them, the losses in hollow-strip waveguides are only 10 ÷ 30% higher than the losses in hollow-strip waveguides, but several times less than in the best strip lines.

After the excitation of the waveguides 25 and 26 of the turnstile connection 37, the signal in the form of an H ₁₀ wave enters the “H” tees 38, 39 of the large node of the hollow-strip waveguides 19, is divided equally and in phase between the arms 41 and 42, and it passes through the junction 43 through the corresponding the holes in the conductive plate 9 enters the middle nodes of the hollow-strip waveguides 16, is divided into them at first equally and out of phase, then equally and in phase and through the holes 10 in the conductive plate 9 enters the small nodes of the hollow-strip waveguides 18, is divided equally again and about thyophasic, and then equally and in phase and through the corresponding radiating holes 6 in the conductive board 5 in each radiating element 2 and in the entire flat antenna array per wave of vertical (V) polarization.

Since the power system of the flat antenna array is made in a parallel manner and with equal amplitude division in the waveguide tees 38, 39 of all nodes of the hollow-strip waveguides 18, 19, 16, all radiating elements 2 of the flat antenna array are in-phase, and the field on its surface is close to equal-amplitude, therefore, the utilization factor of the aperture plane of the antenna approaches unity.

A flat antenna array with a two-mirror zoned antenna with a retarding comb works as follows.

In the embodiment of using a two-mirror zoned antenna 33 as a radiating element of a flat antenna array with a retardation comb 34 on the surface of a large mirror, zoning, as in lens antennas, is necessary to reduce the antenna height H _zer (thickness). So, in the presence of three zones on the surface of a large mirror 33 D _zer = 4 ÷ 5λ _{o max} , the height of such an antenna H _zer ≤0.5λ _{o max} , the presence of a decelerating comb 34 on the surface of a large mirror 33 allows you to optimize the amplitude distribution in such an antenna and align radiation patterns of such an antenna in the "E" and "H" planes, obtain a coefficient of utilization of the antenna surface of instrumentation> 0.87 in a wide frequency band.

When excited by wave H _{11, the} wave through the hole 13 in the conductive plate 9 enters the turnstile connection 37 of the waveguides 25, 26, 27, 28 of a large assembly of hollow-strip waveguides 19. Depending on the position of the vector E relative to the longitudinal axes of the waveguides 25, 26, 27, 28 turnstile connection 37 is powered as a pair of coaxial waveguides 25, 26 or 27, 28 turnstile connection 37, and all waveguides if the vector E lies at an angle φ, where 0 <φ <90 ° to their longitudinal axes. After excitation of the waveguides 25, 26 or 27, 28 of the turnstile connection, the signal in the form of a wave of H ₁₀ enters the "N" tees 38, 39 of the large node of the hollow-strip waveguides 19, is divided equally and in phase between the arms 41 and 42 of the "N" - tee 38 and enters through the holes 11 in the conductive plate 9 into the middle node of the hollow-strip waveguides 16, in which at first the signal is divided equally and out of phase, then each of these signals is divided equally and in phase on the corresponding "H" tees 38, 39 of this node 16 and comes in phase and with the same amp tudoy through the openings 10 in the conductive plate 9 to single emitters in the form of a two-mirror 33 with a zoned antenna decelerating comb 34. The polarization of the emitted signal is dependent on the position of the vector E with respect to the longitudinal axes of waveguides 25, 26, 27, 28. If the vector E of the incident wave ₁₁ coincides H with the longitudinal axes of the waveguides 25 and 26, a flat antenna array emits a wave of horizontal (H) polarization. If the vector E is rotated 90 ° relative to the longitudinal axes of the waveguides 25, 26, the flat antenna array emits a wave of vertical (V) polarization. When the vector E of the incident wave H _{11 is} rotated by 45 ° or 135 ° (-45 °), waves with the same wave amplitude with horizontal and vertical polarization and with phase shift between them by an angle of ± 90 ° are excited in a flat antenna array With a flat antenna array, circularly polarized waves are emitted. If the vector E of the incident wave is rotated through an angle φ = 45 ° relative to the longitudinal axes of the waveguides 25, 26, a left circular polarization (LC) wave is excited in the planar antenna array, if the vector E is rotated by an angle φ = 135 ° (-45 °), accordingly, the wave of right circular polarization (RC).

For other positions of the vector E other than 0 °, 45 °, 90 °, 135 °, relative to the longitudinal axes of the waveguides 25, 26 of the turnstile connection 37, elliptic polarization waves with an ellipticity coefficient 0 <æ <1 are excited in a flat antenna array.

The flat antenna array made according to the invention with different polarizations and used for direct reception of satellite television with a radiating aperture size of 456x456 mm and a thickness of 30 mm has a gain of at least 34.9 dB in both circular polarizations in the frequency range 11.7 ÷ 12.75 GHz , isolation of the polarization of at least 23.6 dB (figure 10, 11).

The gain of a flat antenna array when receiving signals of two linear polarizations is not less than 35 dB in the frequency band 11.7 ÷ 12.75 GHz, and the isolation by polarization is not less than 24.4 dB.

The gain of a flat antenna array, made according to the invention of claim 2 on the basis of two-mirror zoned antennas with a retarding comb, with a radiating aperture size of 456 × 456 mm and a thickness of 24 mm in the frequency range 10.7 ÷ 12.75 GHz for both circular polarizations of at least 34.5 dB, polarization isolation of at least 23 dB (Fig. 12, 13).

For both linear polarizations not less than 34.7 dB, isolation by polarization is not less than 24.2 dB.

Information sources

1. European patent No. 0434268, H 01 Q 9/04, publ. 06/26/91.

2. US patent No. 4761653, H 01 Q 1/38, publ. 08/02/88.

3. US patent No. 4833482, H 01 Q 1/38, publ. 05/23/89.

4. European patent No. 0543519, H 01 Q 21/06, publ. 05/25/93.

5. Patent of Russia No. 2024129, H 01 Q 13/10, publ. 06/20/95.

6. International application PCT / RU 95/00129, publ. 12/14/95.

7. US patent No. 5,936,579, H 01 Q 1/38, publ. 08/10/99.

Claims (4)

1. A flat antenna array, made in the form of a multilayer structure, consisting of a protective dielectric cover placed one above the other, on the inner surface of which there is an array with reflective elements placed in nodes of a rectangular coordinate grid in the form of groups of conductive sites made in the form of squares and divided between themselves by conducting partitions on the cells, conductive boards with many radiating holes and protrusions, the centers of the holes coincide with the centers of the cells, forming single radiation an antenna array in the form of reverse radiation antennas, a dielectric plate and a conductive plate with many holes and protrusions, and containing two power systems for single emitters and an outlet located in the center of a flat antenna array, characterized in that the power systems contain large, small and middle nodes, each of which includes a turnstile connection, H-tees and waveguide transitions, while the power supply systems are made on hollow waveguides, the wide walls of which are conductive parts th board and the conductive plate, and the narrow walls are made with protrusions insulated by the dielectric plate from the wide wall, which is part of the conductive plate, with the formation of segments of quarter-wave strip lines, in addition, an additional dielectric plate is installed in the flat antenna array located between the conductive plate and a flat antenna array housing, and on its surface facing the flat antenna array housing, symmetrically with respect to the center at an equal distance from each other the middle nodes of the power systems are placed, while on the surface of the additional dielectric plate facing the dielectric cover, small nodes of the power systems are placed symmetrically with respect to the center, and a large node of the power systems is placed in the center, and in its two coaxial input hollow waveguides or dielectric inserts are installed for delays of the H10 wave in phase by an angle Δφ = -90 °, or these waveguides have a certain extent a smaller size of the wide wall to accelerate the H10 wave in phase by an angle Δφ = 90 ° at an average frequency of wide range of frequencies. 2. The flat antenna array according to claim 1, characterized in that the dielectric plate and the additional dielectric plate are made in the form of a film of varnish and laminate. 3. A flat antenna array made in the form of a multilayer structure consisting of a protective dielectric cover placed one above the other, on the inner surface of which reflective elements are placed, a dielectric plate and a conductive plate with many holes and protrusions, containing two power systems for single emitters and an output a hole located in the center of a flat antenna array, characterized in that the power systems contain large and medium nodes, each of which includes a turnstile connection ie, N-tees and waveguide transitions, while the power supply systems are made on hollow waveguides, the wide walls of which are parts of the conductive plate and the conductive plate, and the narrow walls are made with protrusions insulated by the dielectric plate from the wide wall, which is part of the conductive plate, with the formation of segments of quarter-wave strip lines, in addition, large mirrors of two-mirror zoned antennas with a grounding comb, which are mounted on a certain distances from the inner surface of the protective dielectric cover, and below them there is a conductive plate with many holes and protrusions, the centers of which coincide with the centers of the holes made in large mirrors, while an additional dielectric plate is installed above the conductive plate located between the conductive plate and the flat antenna body array, and on its surface facing the housing of a flat antenna array, symmetrically relative to the center at an equal distance from each other placed media power system nodes, a large node is placed above the conductive plate on the dielectric plate in its center, and in its two coaxial input hollow waveguides or dielectric inserts are installed to delay the H10 wave in phase by an angle Δφ = -90 or these waveguides have a smaller length the size of the wide wall to accelerate the H10 wave in phase by an angle Δφ = 90 at the average frequency of the working frequency range 4. The flat antenna array according to claim 3, characterized in that the dielectric plate and the additional dielectric plate are made in the form of a film of varnish and laminate.

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