All-metal balanced splay antenna

Abstract

This invention relates to the field of microwave antenna technology, and discloses an all-metal balanced anti-apod exponentially graded antenna to improve the antenna's impedance matching and radiation characteristics, achieving tuning and pattern optimization effects. The antenna of this invention includes: a metal ground plane; a main radiating arm with a graded direction located in the positive X-axis direction; two balanced anti-apod radiating arms fixed to the metal ground plane with graded directions parallel to the negative X-axis direction and arranged anti-apodally with the main radiating arm; the centers of the three intersecting regions formed by the main radiating arm and the two anti-apod radiating arms with the plane of the metal ground plane are all distributed in the Y-axis direction; a first balancing column, integrally located in the positive X-axis direction, connects the main radiating arm to the metal ground plane; a second balancing column, integrally located in the negative X-axis direction, connects each of the two balanced anti-apod radiating arms to the metal ground plane; and the components of the all-metal balanced anti-apod exponentially graded antenna are arranged symmetrically based on the horizontal planes of the X and Z axes, forming a non-uniform feed.

Description

Technical Field

[0001] This invention relates to the field of microwave antenna technology, and in particular to an all-metal balanced anti-todial exponentially graded antenna. Background Technology

[0002] High-power microwaves are electromagnetic waves that release enormous energy in an extremely short time through directional radiation or coupling. High-power microwave systems are generally implemented using two technological approaches: vacuum and solid-state. Solid-state high-power microwave systems based on gallium oxide (Ga2O3) parallel chips, a fourth-generation semiconductor material, offer advantages such as single-channel output power in the 50,000 W range, nanosecond-level pulse width, hundreds of kHz to MHz-level transmission repetition rates, digital phase control and beam adjustment capabilities, small size, light weight, and high flexibility. Currently, the power transmitting components of solid-state high-power microwave systems typically use coaxial interfaces for output. Therefore, radiating antennas used in high-power microwave systems also generally use coaxial interfaces for feeding, and their power capacity within the operating frequency band typically exceeds 50,000 W to prevent the high-power microwave antenna from being damaged.

[0003] Traditional phased array antennas with beam scanning applications are typically printed on dielectric substrates and widely used in various fields. However, the power capacity of these dielectric substrate-loaded antennas is generally low, only 1000-3000 W, far from being able to withstand the output power of solid-state high-power microwave transmitters based on fourth-generation semiconductor materials. Therefore, phased array antennas used in high-power microwave applications generally adopt an all-metal structure. This not only improves the antenna's power capacity but also enhances its mechanical strength and stability, which is of great significance in special scenarios such as multi-platform integration and rapid emergency response.

[0004] Power capacity of a phased array antenna at a certain frequency The calculation method is as follows: ;in, Input power; The breakdown field strength in air environment; This represents the maximum electric field strength of the microwave device at this frequency. Clearly, the power capacity of a microwave device is inversely proportional to its electric field strength. Therefore, to improve power capacity, it is necessary to minimize the electric field strength of the microwave device within its operating frequency band.

[0005] Exponentially graded antennas, based on the principle of slot antennas, typically achieve a transition from small to large size through exponentially graded slots on the same side of a dielectric substrate. Therefore, exponentially graded antennas offer advantages such as extremely wide operating bandwidth, stable gain, and compact structure, making them widely used in wireless communication and weather radar detection. However, traditional exponentially graded antennas exhibit relatively large back lobe radiation, which may affect the electronic components within the back-end signal control and power supply subsystems of solid-state high-power microwave phased array systems, leading to problems such as signal corruption, control malfunctions, and even device damage.

[0006] Introducing unbalanced feeding into an all-metal exponentially graded antenna model simplifies the antenna model, eliminating the need for an additional balanced balun, thus reducing the complexity and cost of the phased array antenna. However, unbalanced feeding can lead to problems such as decreased radiation efficiency of phased array elements, pattern distortion, and impedance mismatch. Summary of the Invention

[0007] The purpose of this invention is to disclose an all-metal balanced anti-todial exponent-gradient antenna to improve the antenna's impedance matching and radiation characteristics, thereby achieving tuning and pattern optimization.

[0008] To achieve the above objectives, the all-metal balanced anti-apod exponentially graded antenna disclosed in this invention comprises:

[0009] Metal flooring;

[0010] The main radiating arm has a gradient direction located in the positive X-axis direction;

[0011] Two balanced anti-toe radial arms fixed to the metal floor have a gradient direction parallel to the negative X-axis and are distributed in an anti-toe pattern with the main radial arm.

[0012] The centers of the three intersecting regions formed by the main radiating arm and the two anti-toe radiating arms and the plane where the metal floor is located are all distributed in the Y-axis direction;

[0013] The main radiating arm is connected to the metal floor by a first balance column that is integrally located in the positive X-axis direction.

[0014] Each of the two balancing anti-toe radial arms is connected to a second balancing column that is integrally located in the negative X-axis direction between the metal floor and the two balancing anti-toe radial arms.

[0015] Furthermore, the components of the all-metal balanced anti-totemic index gradient antenna are arranged symmetrically on the horizontal planes where the X and Z axes are located, forming a non-uniform feed.

[0016] Preferably, the metal floor is rectangular or circular.

[0017] Preferably, when using a coaxial probe for power feeding, the main radiating arm is connected to the inner conductor of the coaxial probe, and the metal ground is connected to the outer conductor of the coaxial probe.

[0018] Preferably, the metal floor and the coaxial probe outer conductor are fixedly connected by a probe flange.

[0019] Preferably, the plurality of all-metal balanced anti-apod exponentially graded antennas are arranged at equal intervals to form a phased array antenna, and the spacing is... satisfy ;in, The wavelength corresponding to the operating frequency of the phased array. The maximum beam deflection angle to be achieved.

[0020] Preferably, the maximum height of the main radiating arm is 0.9 meters. The length along the X-axis is 0.43. The center height of the connection point between the first balancing column and the main radiating arm is 0.33. The center of the connection point between the metal floor and the point is 0.08 km from the origin. The center height of the connection point between the second balancing column and the two opposing radiating arms is 0.15. The center of the connection point between the metal floor and the point is 0.05 meters from the origin. Place.

[0021] The essence of this invention is to place three identical metal oscillators with a gradient exponential structure, one in the center of a metal ground plane and the other two symmetrically placed on either side of the central oscillator. Each oscillator has a tilted balancing column structure on its side. The two balancing columns connected to the balancing antipodal radiating arms are identical in shape and installation position, while the balancing column connected to the main radiating arm differs from the other two. This design maintains structural stability for each oscillator in engineering applications and allows for adjustments to the electric field distribution and circuit structure of the antenna model by modifying the positions of the balancing columns on the oscillator and the metal plate. This improves impedance matching and radiation characteristics, achieving tuning and pattern optimization. Furthermore, this invention also offers the following advantages:

[0022] 1. The exponentially graded antenna is designed with an all-metal structure, which improves the antenna's power capacity and structural strength, thus enabling the invention to be used as a radiating antenna in high-power microwave systems.

[0023] 2. A metal plate was designed for the exponentially graded antenna to act as a reflector, reflecting the electromagnetic waves radiated by the antenna's back lobe to the forward radiation direction. This reduces the antenna's back radiation and enhances its forward radiation gain, which is of great significance for the system's electromagnetic compatibility.

[0024] 3. The adoption of a balanced toe-toe index tapered antenna improves the antenna's cross-polarization characteristics, which helps to improve the equivalent radiated power and coupling efficiency of high-power microwave systems. At the same time, it uniformizes the current distribution of the antenna and increases its power capacity.

[0025] 4. The balancing column added to the side of the vibrator not only ensures the stability of the antenna structure in engineering, but also eliminates the impedance mismatch and non-uniform radiation problems caused by the asymmetric feeding structure.

[0026] 5. It possesses engineering advantages such as rapid heat dissipation, lightweight design, and structural stability, making it applicable to solid-state high-power microwave phased array antenna systems. Furthermore, the main lobes of the antenna element based on this invention propagate along the main axis, improving the purity of the antenna's main polarization and maintaining good symmetry. This facilitates a wider range of phased array scanning in two-dimensional beamforming. Simultaneously, the impact of back-lobe radiation on the electronic components within the back-end signal control and power supply subsystems is negligible, significantly reducing the possibility of electromagnetic incompatibility issues within the system.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0029] Figure 1 This is a schematic diagram of the structure and composition of a solid-state high-power microwave phased array system disclosed in an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the phased array unit iteration disclosed in the embodiments of the present invention.

[0031] Figure 3 This is a three-dimensional view of the phased array antenna element disclosed in the embodiments of the present invention.

[0032] Figure 4 This is a front view of the phased array antenna element disclosed in an embodiment of the present invention.

[0033] Figure 5 This is a side view of the phased array antenna element disclosed in an embodiment of the present invention.

[0034] Figure 6 This is a top view of the phased array antenna element disclosed in an embodiment of the present invention.

[0035] Figure 7 The results are the S11 simulation results of the phased array antenna element disclosed in the embodiments of the present invention.

[0036] Figure 8 This is the simulation result of the maximum electric field strength of the phased array antenna element as a function of frequency, as disclosed in the embodiments of the present invention.

[0037] Figure 9 These are the simulation results of the power capacity of the phased array antenna element disclosed in the embodiments of the present invention.

[0038] Figure 10 This invention discloses the effect of the height of the connection between the balance column of the main radiating arm and the radiating arm and the metal ground plane on the S-parameters of the phased array antenna element under the same conditions.

[0039] Figure 11 This invention discloses the effect of the distance between the balancing column of the balanced toe-shaped radiating arm and the metal ground plane on the S-parameters of the phased array antenna element, under the same conditions.

[0040] Figure 12 This is a schematic diagram comparing the effect of loading a balancing column on the main lobe offset of the antenna radiation pattern in a phased array antenna element disclosed in this embodiment of the invention with that without loading a balancing column.

[0041] Figure 13 This is a schematic diagram comparing the phased array antenna element disclosed in the embodiments of the present invention with a conventional toe-mounted antenna at Theta=0° based on the radiation pattern.

[0042] Figure 14 This is a schematic diagram comparing the simulation results of the phased array antenna unit disclosed in the embodiments of the present invention with those of the existing conventional toe-and-toe antenna based on power capacity.

[0043] Figure 15 This is a schematic diagram showing the simulation comparison results of the radiation pattern of the phased array antenna unit disclosed in the embodiments of the present invention with and without a metal ground plane, based on Theta=0°.

[0044] Figure 16 This is a schematic diagram showing the simulation comparison results of the radiation pattern of the phased array antenna unit disclosed in the embodiments of the present invention with and without a metal ground plane, based on Theta=90°.

[0045] Figure 17 This is a schematic diagram of the azimuth simulation results of the phased array antenna elements disclosed in the embodiments of the present invention achieving two-dimensional beam scanning at 1.5 GHz.

[0046] Figure 18 This is a schematic diagram of the elevation angle simulation results of the phased array antenna elements disclosed in the embodiments of the present invention achieving two-dimensional beam scanning at 1.5 GHz. Detailed Implementation

[0047] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0048] Example 1

[0049] This embodiment discloses an all-metal balanced anti-todial exponentially graded antenna that can be used in solid-state high-power microwave phased array systems.

[0050] Reference Figures 1 to 6 The solid-state high-power microwave phased array system in this embodiment includes a phased array antenna 1, a solid-state high-power microwave transmitter 2, a signal control and array power supply integrated system 3, a system bracket 4, a coaxial probe 5, a probe flange 6, a rectangular metal floor 7, an antenna main radiating arm 8, an antenna balanced toe-shaped radiating arm 9, a main radiating arm balance column 10, and a balanced toe-shaped balance column 11.

[0051] In this embodiment, for ease of understanding, the center point where the main radiating arm contacts the coaxial probe is defined as the origin of the entire phased array unit model; the wide side of the antenna unit radiating arm is the x-direction, where the direction in which the main radiating arm extends is the +x-direction; the narrow side of the antenna unit radiating arm is the y-direction, where the direction closer to the signal control and array power supply integrated system is the +y-direction; the direction of the antenna radiating arm perpendicular to the metal floor is the z-direction, where the direction away from the coaxial probe and high-power microwave source is the +z-direction.

[0052] All phased array antennas 1 are made of aluminum alloy, including 12 A total of 144 balanced, tapered antennas are arranged uniformly in a rectangular shape. For heat dissipation, fixation to the solid-state high-power microwave transmitter, and weight reduction of the phased array antenna, the metal floor of the array has through-holes and screw holes. The spacing constraints between the antenna elements in the phased array are as follows: ;in, The spacing between phased array elements (the spacing between phased array elements refers to the distance between the geometric centers of adjacent elements). This refers to the relative wavelength corresponding to the operating frequency of the phased array. The target is the maximum beam deflection angle. To suppress sidelobes in the array pattern and achieve a certain range of beam deflection, the spacing between phased array antenna elements is 0.5. .

[0053] The solid-state high-power microwave transmitter 2 comprises 144 high-power microwave coaxial single-channel transmitters (12×12) based on fourth-generation semiconductor material chips. Each transmitter is connected to an antenna element, providing kilowatt-level output power. The back end of each transmitter is connected to the signal control and array power supply integrated system 3 via cables.

[0054] The integrated signal control and array power supply system 3 includes a signal control subsystem, which provides the system with a clock signal and performs beam scanning of the phased array antenna by correcting and inputting the initial phase to each phased array element. It also integrates a power supply system to provide the necessary voltage for the signal control system and the high-power microwave transmitter.

[0055] System bracket 4 is used to integrate and fix the various subsystems, and its dimensions are 1300 mm × 1300 mm × 1000 mm.

[0056] Coaxial probe 5 is a 50Ω standard fed probe. The outer conductor is made of epoxy resin-based composite material with a dielectric constant of 2.8, and the inner conductor is made of metal. Probe flange 6 is used to fix the coaxial probe to the metal ground plane.

[0057] The rectangular metal floor 7 has a length and width of 0.5. The ground plane has a circular groove of the same size as the outer conductor of coaxial probe 5, which facilitates the entry of the metal part of coaxial probe 1 and its feeding of the antenna element. The metal ground plane acts as a reflector, which can improve the forward radiation gain of the antenna and prevent the back lobe radiation of the antenna from affecting the signal control system at the back end, thereby affecting the electromagnetic compatibility of the system.

[0058] The main radiating arm 8 and the balanced antipodal radiating arms 9 are essentially three identical exponentially graded metal elements, one placed in the exact center of the metal ground plane, and the other two symmetrically placed on either side of the central element. Taking the main radiating arm 8 as an example, its graded curve parametric equation is: ;in, , It is a constant. Preferably, the height of the antenna radiating arm is 0.9. The width is 0.43 .

[0059] The antenna element employs a structurally symmetrical, non-uniform feed. The main radiating arm 8 is directly connected to the coaxial probe for feeding. The balanced antipodal radiating arm 9 has two arms, one in the y-direction, and is placed on a metal floor with chiral symmetry to the main radiating arm 8.

[0060] The balancing column 10 is connected to the main radiating arm of the antenna and the ground, with a connection height of 0.33 meters. The connection point with the floor is 0.08 meters from the origin. The balancing column 11 is connected to the antenna's balancing toe-toe radiating arm and the floor, with a connection height of 0.15 meters from the antenna radiating arm. The connection point with the floor is 0.05 meters from the origin. Place.

[0061] Reference Figure 2The power capacity of the dipole-index graded antenna (antenna 1) based on a dielectric substrate cannot meet the power capacity requirements of high-power microwave systems. By designing antenna 1 as an all-metal antenna, a fully metal dipole-index graded antenna (antenna 2) with acceptable power capacity was obtained. Adding another radiating arm to the antenna 2 model to construct a balanced dipole-index structure antenna with three radiating arms (antenna 3) can reduce the antenna's cross-polarization and further improve the equivalent radiated power and coupling efficiency of the high-power microwave radiation system. Antenna 3 suffers from problems such as a high center of gravity, structural instability, and asymmetrical radiation pattern. Adding balancing pillars (in this invention) next to the main radiating arm and the balanced dipole-index radiating arm can effectively ensure the structural stability of the antenna element in engineering applications. Furthermore, it can change the current distribution and circuit model of the antenna element, effectively improving the impedance matching and symmetry of the radiation pattern, reducing the off-axis degree of the main lobe of the radiation pattern, increasing the radiation gain of the phased array antenna, and enhancing the equivalent radiated power of the high-power microwave system.

[0062] like Figure 7 As shown, the -10 dB impedance bandwidth of the antenna element can cover 1.385-1.595 GHz, and the resonance depth of the antenna element reaches -37 dB at the target frequency of 1.5 GHz, which meets the requirements of practical applications of high-power microwave systems.

[0063] like Figure 8 and Figure 9 As shown, based on the power capacity calculation method, the power capacity of the phased array antenna elements in the target frequency band in the air exceeds 30,000 W, which can withstand the output power of high-power microwave radiation sources based on fourth-generation semiconductor material chips.

[0064] Figures 10 to 12 This is a schematic diagram illustrating the effect of the balancing post position on the impedance matching and radiation pattern of the antenna element.

[0065] like Figure 10 As shown, ez represents the height of the connection between the balance column and the radiating arm of the main radiating arm and the metal floor. When ez is 60 mm, the performance of the phased array antenna element can well meet the specifications of the high-power microwave system. When ez shifts, on the one hand, the operating frequency band of the antenna element begins to shift, and the bandwidth narrows.

[0066] like Figure 11 As shown, hx is the distance from the metal ground plane to the connection point between the balancing column of the balanced toe-shaped radiating arm and the metal ground plane. When hx is 9.8 mm, the impedance matching performance of the phased array antenna element reaches its optimal level.

[0067] Figure 12This demonstrates the effect of adding a balancing post on correcting the main lobe offset of the antenna's radiation pattern. Without the balancing post, the antenna's main lobe is offset by 15°, with a maximum realized gain of 2.11 dBi. After adding the balancing post, the antenna's main lobe is on the main axis, and its maximum realized gain is achieved. Compared to the unloaded balancing post, the realized gain at Theta=0° increases by 3.93 dBi.

[0068] Simulations of the antenna element's radiation patterns in the E-plane and H-plane at multiple frequencies, including 1.45 GHz, 1.5 GHz, and 1.55 GHz, show that the main lobes of the antenna element in this embodiment propagate along the principal axis and maintain good symmetry. This is beneficial for the phased array to achieve a wider range during two-dimensional beam scanning. For example, the maximum gains of the antenna element at 1.45 GHz, 1.5 GHz, and 1.55 GHz are 5.14 dBi, 5.32 dBi, and 5 dBi, respectively.

[0069] like Figure 13 As shown, by comparing the cross-polarization pattern of this embodiment with that of a conventional toe-and-toe antenna, it can be seen that at Theta=0°, the cross-polarization level of this embodiment at 1.5 GHz is 47.1 dB lower than that of the toe-and-toe antenna, which helps to improve the purity of the antenna's main polarization and further improve the equivalent radiated power and coupling efficiency of the high-power microwave system.

[0070] Figure 14 The simulation results compare the power capacity of existing conventional toe-mounted antennas with those of the antenna element in this embodiment. Because the balanced toe-mounted structure further distributes the current density of the radiating arms within the toe-mounted structure, the balanced toe-mounted structure offers a power capacity improvement of 0-43650 W compared to the conventional toe-mounted structure in the 1.3-1.6 GHz range. At the target frequency of 1.5 GHz, the power capacity of the balanced toe-mounted antenna is 1.24 times that of the conventional toe-mounted antenna.

[0071] Simulations of the E-plane and H-plane radiation patterns of the phased array antenna array composed of 12×12 antenna elements in this embodiment show that the phased array antenna achieves radiation gains of 24.2 dBi, 25.7 dBi, and 25.6 dBi on its main lobe at 1.45 GHz, 1.5 GHz, and 1.55 GHz, respectively.

[0072] Figure 15 and Figure 16The simulation results show the radiation patterns of a 12×12 phased array antenna with and without a ground plane at Theta=0° and Theta=90°, respectively. Because a metal plate is loaded at the rear of the antenna, it acts as a reflector, thus enhancing and suppressing the antenna's forward and backward radiation, respectively. In both azimuth and elevation directions, the phased array antenna with the ground plane has a maximum radiation gain of 25.7 dBi, and backward radiation gains of -1.2 dBi and -0.5 dBi, respectively. In both azimuth and elevation directions, the phased array antenna without the ground plane has a maximum radiation gain of 22.6 dBi, and backward radiation gain of 20.9 dBi, respectively. That is, after loading the metal ground plane, the array's forward radiation gain increases by 3.1 dBi, while the backward radiation gain decreases by 22.1 dBi and 21.4 dBi, respectively. Therefore, the array with the ground plane not only improves its forward radiation capability but also increases the equivalent radiated power of the high-power microwave system. Furthermore, the impact of its backlobe radiation on the electronic components inside the signal control subsystem and power supply subsystem is negligible, greatly reducing the possibility of electromagnetic compatibility issues within the system.

[0073] Figure 17 and Figure 18 The figures show the simulation results of the azimuth and elevation angles for a 12×12 phased array antenna achieving two-dimensional beam scanning at 1.5 GHz. When the beam is deflected to ±45°, the array gain is 22.9 dBi, a decrease of 2.8 dBi compared to the undeflected gain. Therefore, the phased array antenna can achieve two-dimensional beam deflection of ±45° at 1.5 GHz.

[0074] In summary, the all-metal balanced anti-todial exponentially graded antenna disclosed in this embodiment includes: a metal ground plane (which can be rectangular or circular); a main radiating arm with the graded direction located in the positive X-axis direction; two balanced anti-todial radiating arms fixed on the metal ground plane with the graded direction parallel to the negative X-axis direction and arranged in an anti-todial configuration with the main radiating arm; the centers of the three intersecting regions formed by the main radiating arm and the two anti-todial radiating arms and the plane where the metal ground plane is located are all distributed in the Y-axis direction; a first balancing column (i.e., balancing column 10 in the figure) is connected between the main radiating arm and the metal ground plane, and each of the two balanced anti-todial radiating arms is connected between the metal ground plane and a second balancing column (i.e., balancing column 11 in the figure), which is located in the negative X-axis direction; and the components of the all-metal balanced anti-todial exponentially graded antenna are arranged symmetrically based on the horizontal planes where the X-axis and Z-axis are located, forming a non-uniform feed. Its beneficial effects include at least:

[0075] 1. The exponentially graded antenna is designed with an all-metal structure, which improves the antenna's power capacity and structural strength, thus enabling the invention to be used as a radiating antenna in high-power microwave systems.

[0076] 2. A metal plate was designed for the exponentially graded antenna to act as a reflector, reflecting the electromagnetic waves radiated by the antenna's back lobe to the forward radiation direction. This reduces the antenna's back radiation and enhances its forward radiation gain, which is of great significance for the system's electromagnetic compatibility.

[0077] 3. The adoption of a balanced toe-toe index tapered antenna improves the antenna's cross-polarization characteristics, which helps to improve the equivalent radiated power and coupling efficiency of high-power microwave systems. At the same time, it uniformizes the current distribution of the antenna and increases its power capacity.

[0078] 4. The balancing column added to the side of the vibrator not only ensures the stability of the antenna structure in engineering, but also eliminates the impedance mismatch and non-uniform radiation problems caused by the asymmetric feeding structure.

[0079] 5. It possesses engineering advantages such as rapid heat dissipation, lightweight design, and structural stability, making it applicable to solid-state high-power microwave phased array antenna systems. Furthermore, the main lobes of the antenna element based on this invention propagate along the main axis, improving the purity of the antenna's main polarization and maintaining good symmetry. This facilitates a wider range of phased array scanning in two-dimensional beamforming. Simultaneously, the impact of back-lobe radiation on the electronic components within the back-end signal control and power supply subsystems is negligible, significantly reducing the possibility of electromagnetic incompatibility issues within the system.

[0080] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An all-metal balanced anti-apod exponentially graded antenna, characterized in that, include: Metal flooring; The main radiating arm has a gradient direction located in the positive X-axis direction; Two balanced anti-toe radial arms fixed to the metal floor have a gradient direction parallel to the negative X-axis and are distributed in an anti-toe pattern with the main radial arm. The centers of the three intersecting regions formed by the main radiating arm and the two anti-toe radiating arms and the plane where the metal floor is located are all distributed in the Y-axis direction; The main radiating arm is connected to the metal floor by a first balance column that is integrally located in the positive X-axis direction. Each of the two balancing anti-toe radial arms is connected to a second balancing column that is integrally located in the negative X-axis direction between the metal floor and the two balancing anti-toe radial arms. Furthermore, the components of the all-metal balanced anti-totegnotal gradient antenna are arranged symmetrically on the horizontal planes where the X and Z axes are located, forming a non-uniform feed. The center point where the main radiating arm contacts the coaxial probe is defined as the origin of the entire phased array element model.

2. The all-metal balanced anti-apod exponentially graded antenna according to claim 1, characterized in that, The metal floor is rectangular or circular.

3. The all-metal balanced anti-apod exponentially graded antenna according to claim 1, characterized in that, When using a coaxial probe for power feeding, the main radiating arm is connected to the inner conductor of the coaxial probe, and the metal ground is connected to the outer conductor of the coaxial probe.

4. The all-metal balanced anti-apod exponentially graded antenna according to claim 3, characterized in that, The metal floor and the outer conductor of the coaxial probe are fixedly connected by a probe flange.

5. The all-metal balanced anti-apodial index tapered antenna according to any one of claims 1 to 4, characterized in that, Multiple all-metal balanced anti-totemic gradient antennas are arranged at equal intervals to form a phased array antenna, and the spacing is... satisfy ;in, The wavelength corresponding to the operating frequency of the phased array. The maximum beam deflection angle to be achieved.

6. The all-metal balanced anti-apod exponentially graded antenna according to claim 5, characterized in that, The maximum height of the main radiating arm is 0.9 meters. The length along the X-axis is 0.

43. The center height of the connection point between the first balancing column and the main radiating arm is 0.

33. The center of the connection point between the metal floor and the point is 0.08 km from the origin. The center height of the connection point between the second balancing column and the two opposing radiating arms is 0.

15. The center of the connection point between the metal floor and the point is 0.05 meters from the origin. Place.

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