CN115173040A - Integrated broadband ridge waveguide slot antenna and antenna array - Google Patents
Integrated broadband ridge waveguide slot antenna and antenna array Download PDFInfo
- Publication number
- CN115173040A CN115173040A CN202211007044.8A CN202211007044A CN115173040A CN 115173040 A CN115173040 A CN 115173040A CN 202211007044 A CN202211007044 A CN 202211007044A CN 115173040 A CN115173040 A CN 115173040A
- Authority
- CN
- China
- Prior art keywords
- waveguide
- power divider
- ridge waveguide
- cavity power
- antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
Landscapes
- Waveguide Aerials (AREA)
Abstract
The present disclosure provides an integrated broadband ridge waveguide slot antenna and antenna array, wherein the integrated broadband ridge waveguide slot antenna comprises: the electromagnetic wave port is used for receiving first electromagnetic waves and sending the first electromagnetic waves to the waveguide cavity power divider; the waveguide cavity power divider includes: the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider; the input end of the first-stage waveguide cavity power divider is connected with an electromagnetic wave port, two output ends of the first-stage waveguide cavity power divider are respectively connected with the input ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider, and two output ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are connected with the metal ridge waveguide; and the metal ridge waveguide is used for sending second electromagnetic waves to the outside of the antenna according to the four parts of electromagnetic waves, and a gap is formed in the metal ridge waveguide.
Description
Technical Field
The present disclosure relates to the field of ridge waveguide slot antennas, and in particular, to an integrated wideband ridge waveguide slot antenna and an antenna array.
Background
In recent decades, with the increase of the requirement for radar anti-interference, the research on the waveguide slot array antenna is expanding. The waveguide slot antenna has the advantages of high radiation efficiency, compact structure, easy realization of low sidelobe, stable and reliable performance and the like, and is widely applied to missile-borne and airborne radar equipment needing narrow beams or shaped beams. The waveguide slot array antenna has the characteristics of easy control of the aperture field distribution, high antenna aperture efficiency, stable performance, simple and compact structure, high strength, convenient installation and the like, and is easy to realize narrow beams, low sidelobes and even ultra-low sidelobes. The slot antenna mode of slotting on the central line of the wide side of the asymmetric ridge waveguide utilizes the asymmetry degree of the asymmetric ridge waveguide section to control the energy radiated by each slot, and has the advantages of complex antenna structure and higher processing difficulty.
Disclosure of Invention
In view of the above, it is a primary object of the present disclosure to provide an integrated wideband ridge waveguide slot antenna and antenna array, so as to partially solve at least one of the above-mentioned technical problems.
One aspect of the present disclosure provides an integrated wideband ridge waveguide slot antenna, including:
the waveguide cavity power divider comprises an electromagnetic wave port and a waveguide cavity power divider, wherein the electromagnetic wave port is used for receiving a first electromagnetic wave and sending the first electromagnetic wave to the waveguide cavity power divider; the waveguide cavity power divider includes: the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider; the primary waveguide cavity power divider, the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider respectively comprise an input end and two output ends; an input end of the first-stage waveguide cavity power divider is connected to the electromagnetic wave port, two output ends of the first-stage waveguide cavity power divider are respectively connected to input ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider, and two output ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are connected to the metal ridge waveguide; the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are used for dividing the first electromagnetic wave into four parts; and the metal ridge waveguide is used for sending a second electromagnetic wave to the outside of the antenna according to the four parts of electromagnetic waves, and a gap is formed in the metal ridge waveguide.
According to an embodiment of the present disclosure, the metal ridge waveguide includes: p first ridge waveguide units and Q second ridge waveguide units.
And arranging the P first ridge waveguide units and the Q second ridge waveguide units in a preset straight line direction according to the arrangement sequence that P/2 first ridge waveguide units are respectively positioned at two sides and Q second ridge waveguide units are positioned at the center, wherein P and Q are positive even numbers.
According to an embodiment of the present disclosure, the antenna further includes:
one output end of the first secondary waveguide cavity power divider is connected with the P/2 first ridge waveguide units on one side, and the other output end of the first secondary waveguide cavity power divider is connected with the Q/2 second ridge waveguide units adjacent to the P/2 first ridge waveguide units on one side; and the output end of the second secondary waveguide cavity power divider adjacent to the first secondary waveguide cavity power divider is connected with the rest Q/2 second ridge waveguide units, and the other output end of the second secondary waveguide cavity power divider is connected with the rest P/2 second ridge waveguide units.
According to an embodiment of the present disclosure, the partial waveguide cavities of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are disposed inside the ridges of the first ridge waveguide unit and the second ridge waveguide unit, and the walls of the first ridge waveguide unit and the second ridge waveguide unit are the cavity walls of the partial waveguide cavities, respectively.
According to an embodiment of the present disclosure, in the above antenna, P =2,q =2.
According to an embodiment of the present disclosure, the first ridge waveguide unit includes M slots; the second ridge waveguide unit includes N slots.
The M slots are disposed on the waveguide surface of the first ridge waveguide unit opposite to the first secondary waveguide cavity power divider, and penetrate through the waveguide surface of the first ridge waveguide unit; the N slots are provided on the waveguide surface of the second ridge waveguide unit opposite to the second secondary waveguide cavity power divider, and penetrate the waveguide surface of the second ridge waveguide unit; the slots are sequentially arranged on the symmetry axis of the first ridge waveguide unit and the second ridge waveguide unit in the preset linear direction, the second electromagnetic wave is sent to the outside of the antenna, and M and N are positive integers.
According to an embodiment of the present disclosure, in the above antenna, M =4,n =2.
According to an embodiment of the present disclosure, the antenna further includes:
the metal ridge waveguide is provided with fixing interfaces at two ends perpendicular to the preset linear direction, and the fixing interfaces are used for fixing the antenna.
According to the embodiment of the present disclosure, the slit length is 16.4mm, and the slit width is 2mm; the width of the metal ridge waveguide is not more than 16mm, the length of the metal ridge waveguide is not more than 263mm, and the length direction is the preset linear direction; the electromagnetic wave port receives a first electromagnetic wave with the working bandwidth of 8.85-10.35 GHz; the thickness of the antenna perpendicular to the plane of the metal ridge waveguide is not more than 60mm.
Another aspect of the present disclosure provides an integrated wideband ridge waveguide slot antenna array, including:
r integrated broadband ridge waveguide slot antennas are arranged in the direction perpendicular to the preset straight line; the integrated wideband ridge waveguide slot antenna as claimed in any one of claims 1 to 9, wherein said antennas are arranged at the same height, and R is an integer not less than 2.
Based on the technical scheme, compared with the prior art, the embodiment of the disclosure has the following beneficial effects:
the integrated broadband ridge waveguide slot antenna can uniformly emit electromagnetic waves with different energies through the waveguide cavity power divider, can optimize impedance matching in the process, realizes integration, has good impedance matching coefficient in a broadband range, and ensures good directional diagram characteristics.
Drawings
Fig. 1 schematically illustrates an overall structural schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the present disclosure;
figure 2 schematically illustrates a schematic diagram of a waveguide cavity power divider and a metal ridge waveguide overlap of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure;
figure 3 schematically illustrates an external dimensional schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the present disclosure;
FIG. 4 schematically illustrates a four-unit waveguide antenna port standing wave simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure;
figure 5 schematically illustrates a pitch-wise gain simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure;
figure 6 schematically illustrates an azimuthal directional gain simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the present disclosure;
figure 7 schematically illustrates a pitch-wise electromagnetic wave amplitude schematic of an integrated broadband ridge waveguide slot antenna array according to an embodiment of the present disclosure;
figure 8 schematically illustrates an azimuth-direction electromagnetic wave amplitude schematic of an integrated wideband ridge waveguide slot antenna array, according to an embodiment of the present disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
In those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.).
Among the related art antenna forms, the broadband ridge waveguide antenna is a commonly used antenna form due to its high bandwidth, stable structure, good scanning performance, and easy integration. In the existing method, a mode of adding a ridge in a waveguide is generally adopted, and the transmission mode of electromagnetic waves in the waveguide is changed, so that the electromagnetic excitation and propagation of lower frequency can be realized under a narrower size.
In the related technology, the slot antenna form of the slot on the central line of the wide side of the asymmetric ridge waveguide utilizes the asymmetry degree of the asymmetric ridge waveguide section to control the energy radiated by each slot, and has the disadvantages of complex antenna structure and high processing difficulty. The energy in the middle of the antenna is concentrated, the energy around the antenna is low, and the performance of the antenna is poor.
Due to the fact that the waveguide length of the antenna in the related technology is large, radiation energy far from the edge is small due to the adoption of a single-point center feeding mode, and therefore gaps cannot be effectively excited, and electromagnetic wave performance is affected. Therefore, the gap is excited by means of the multistage waveguide cavity power divider.
The design of the horizontally polarized ridge waveguide slot antenna and the matched secondary integrated waveguide cavity power divider realizes integration, simultaneously realizes broadband characteristics and good directional diagram indexes, and has one-dimensional large-angle scanning capability in the azimuth direction.
To at least partially solve the technical problems occurring in the related art, the present disclosure provides an integrated wideband ridge waveguide slot antenna, including:
and the electromagnetic wave port is used for receiving the first electromagnetic wave and sending the first electromagnetic wave to the waveguide cavity power divider.
The waveguide cavity power divider includes: the power divider comprises a first-stage waveguide cavity power divider, a first second-stage waveguide cavity power divider and a second-stage waveguide cavity power divider. The first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider respectively comprise an input end and two output ends. The input end of the primary waveguide cavity power divider is connected with an electromagnetic wave port, two output ends of the primary waveguide cavity power divider are respectively connected with the input ends of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider, and two output ends of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are connected with the metal ridge waveguide. The first-level waveguide cavity power divider, the first second-level waveguide cavity power divider and the second-level waveguide cavity power divider are used for dividing the first electromagnetic wave into four parts.
And the metal ridge waveguide is used for sending second electromagnetic waves to the outside of the antenna according to the four parts of electromagnetic waves, and a gap is formed in the metal ridge waveguide.
According to the embodiment of the present disclosure, the electromagnetic wave port may be connected to an actually required electromagnetic wave generating apparatus.
According to the embodiment of the disclosure, according to the limitations of performance parameters and energy size of the electromagnetic waves generated by the related technology, a two-stage waveguide cavity power divider is designed to balance the electromagnetic wave energy. The waveguide cavity power divider level is limited mainly according to the electromagnetic waves of actual needs. In embodiments of the present disclosure, waveguide cavity power splitters of three and more levels may cause unnecessary energy loss.
According to the embodiment of the disclosure, the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider in the waveguide cavity power divider can divide electromagnetic wave energy. The size of the four parts of electromagnetic waves is changed by refining and improving the size of the first-level waveguide cavity power divider, the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider, so that the energy is uniform when the electromagnetic waves are emitted outwards.
According to an embodiment of the present disclosure, the first electromagnetic wave and the second electromagnetic wave have the same operating bandwidth.
According to the embodiment of the disclosure, the size of the metal ridge waveguide can be adjusted according to actual needs, the transmission waveguide wavelength interval of the metal ridge waveguide can be determined after the size of the metal ridge waveguide is determined, and the size of the metal ridge waveguide can be optimized based on the size of the metal ridge waveguide and actually required electromagnetic wave parameters, so that different excited feed signals obtained through the waveguide power divider are converted to obtain electromagnetic waves, and better impedance matching characteristics and directional diagram performance can be obtained under the actually required working bandwidth of the electromagnetic waves.
According to an embodiment of the present disclosure, a metal ridge waveguide includes: p first ridge waveguide units and Q second ridge waveguide units.
And arranging the P first ridge waveguide units and the Q second ridge waveguide units in a preset straight line direction according to the arrangement sequence that the P/2 first ridge waveguide units are respectively positioned at two sides and the Q second ridge waveguide units are positioned at the center, wherein P and Q are positive even numbers.
According to the embodiment of the disclosure, the existing rectangular waveguide has a higher cut-off frequency under the condition of transmitting electromagnetic field energy, so that the requirement on the lowest frequency of an electromagnetic field is higher, and the actual requirement cannot be well met. The single ridge waveguide is selected, so that electromagnetic waves with lower cut-off frequency can be obtained, meanwhile, the electromagnetic field in the single ridge waveguide is changed, the propagation range of the electromagnetic field is limited, the electromagnetic field is contracted, and the unit volume of the ridge waveguide is reduced.
According to the embodiment of the disclosure, the single-ridge waveguide is obtained by adding the ridge into the waveguide, improvement can be performed based on the shape of the rectangular waveguide, and the wide wall of the rectangular waveguide is bent to obtain the single-ridge waveguide. The metal ridge waveguide may be a cubic waveguide resembling a cube shape.
According to the embodiments of the present disclosure, a single-ridge waveguide having a waveguide wall thickness of 1mm can be selected in consideration of the process level in the related art and the processing strength satisfying the actual demand.
According to an embodiment of the present disclosure, the first ridge waveguide unit includes M slots; the second ridge waveguide unit includes N slots.
The M gaps are arranged on the waveguide surface of the first ridge waveguide unit opposite to the single ridge on the single ridge waveguide and penetrate through the waveguide surface of the first ridge waveguide unit; the N gaps are arranged on the waveguide surface of the second ridge waveguide unit opposite to the single ridge waveguide and penetrate through the waveguide surface of the second ridge waveguide unit; the slots are sequentially arranged on the symmetry axis of the first ridge waveguide unit and the second ridge waveguide unit in the preset linear direction, and send second electromagnetic waves to the outside of the antenna, wherein M and N are positive integers.
According to the embodiment of the present disclosure, with reference to a waveguide surface opposite to a single ridge on a single ridge waveguide, setting the size of the longer side of the rectangular waveguide surface to be the size corresponding to the length of the metal ridge waveguide; the size of the shorter side of the rectangular waveguide surface is the size corresponding to the width of the metal ridge waveguide; the dimension perpendicular to the plane of the rectangular waveguide surface is the dimension corresponding to the width of the metal ridge waveguide, that is, the dimension corresponding to the thickness of the metal ridge waveguide. The direction of the longer side of the rectangular waveguide surface is also set to be the direction of a preset straight line.
According to the embodiments of the present disclosure, fine adjustment of the electromagnetic waves transmitted outward may be achieved by setting the number and size of the slits on the first ridge waveguide unit and the second ridge waveguide unit, so as to obtain electromagnetic waves satisfying different practical requirements. M is not equal to N, the specific numerical values of M and N are adjusted according to the actually required electromagnetic wave energy distribution condition, and the size parameter of the gap is determined according to the actually required electromagnetic wave parameter.
According to an embodiment of the present disclosure, the antenna further includes:
one output end of the first secondary waveguide cavity power divider is connected with P/2 first ridge waveguide units on one side, and the other output end of the first secondary waveguide cavity power divider is connected with Q/2 second ridge waveguide units adjacent to the P/2 first ridge waveguide units on the side.
The output end of the second secondary waveguide cavity power divider adjacent to the first secondary waveguide cavity power divider is connected with the rest Q/2 second ridge waveguide units, and the other output end of the second secondary waveguide cavity power divider is connected with the rest P/2 second ridge waveguide units.
According to the embodiment of the disclosure, part of the waveguide cavities of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are arranged inside the ridges of the first ridge waveguide unit and the second ridge waveguide unit, and the walls of the first ridge waveguide unit and the second ridge waveguide unit are respectively the cavity walls of the part of the waveguide cavities.
According to the embodiments of the present disclosure, the first ridge waveguide unit or the second ridge waveguide unit structure may be regarded as one antenna unit, and one or more antenna units may be connected to any output end of the first secondary waveguide cavity power divider or the second secondary waveguide cavity power divider. Partial structures of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are embedded into the single ridge of the ridge waveguide unit, so that the space inside the single ridge of the ridge waveguide unit can be effectively utilized. The width and the thickness of the integrated broadband ridge waveguide slot antenna can be further reduced by the aid of the integrated overlapping design.
According to the embodiments of the present disclosure, 4-16 slots may be provided on the antenna unit in consideration of the state of the art of the related art and the electromagnetic waves transmitted to meet the actual demand.
The following describes the structure of the integrated wideband ridge waveguide slot antenna with reference to fig. 1 to 3 in combination with specific embodiments.
Fig. 1 schematically illustrates an overall structural schematic diagram of an integrated broadband ridge waveguide slot antenna according to an embodiment of the present disclosure.
As shown in fig. 1, the integrated broadband ridge waveguide slot antenna may include 4 antenna elements, including 2 first ridge waveguide elements and 2 second ridge waveguide elements. The 2 first ridge waveguide units are respectively positioned at two sides of the integrated broadband ridge waveguide slot antenna, the 2 second ridge waveguide units are positioned in the middle, the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are arranged according to the position relation, and 4 output ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are respectively connected with one antenna unit. And a metal connecting medium is also arranged between the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider.
According to an embodiment of the present disclosure, the antenna further includes:
the metal ridge waveguide is provided with a fixed interface at two ends perpendicular to the preset linear direction respectively for fixing the antenna.
According to an embodiment of the present disclosure, the fixing member may be an external fixing structure of the antenna.
According to an embodiment of the present disclosure, the antenna further includes:
and hollowing out the metal connecting medium between the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider.
According to the embodiment of the disclosure, under the condition that the process level and the processing strength meeting the actual requirement in the related technology are considered, the metal connecting medium is subjected to hollow-out processing, so that the overall weight of the integrated broadband ridge waveguide slot antenna is reduced, and the resources are saved.
Fig. 2 schematically illustrates a schematic diagram of a waveguide cavity power divider and a metal ridge waveguide overlap of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure.
As shown in fig. 2, the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are connected to the metal ridge waveguide, part of the waveguide cavities of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are disposed inside a single ridge of the ridge waveguide unit, and the part of the waveguide cavities and the single ridge of the ridge waveguide unit share a wall, so that the width and thickness of the antenna unit can be reduced. The input end of the primary waveguide cavity power divider is connected with an electromagnetic wave port.
According to the embodiment of the disclosure, under the condition that the actual working bandwidth of the electromagnetic wave is 8.85-10.35GHz, the size of the antenna can be optimized by combining the integral structure and the processing difficulty of the integrated broadband ridge waveguide slot antenna on the basis of the half wavelength of the lowest frequency in the working bandwidth.
Fig. 3 schematically illustrates an external dimensional schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the present disclosure.
As shown in FIG. 3, the width of the integrated broadband ridge waveguide slot antenna is not more than 16mm, the length of the integrated broadband ridge waveguide slot antenna is not more than 263mm, and the thickness of the integrated broadband ridge waveguide slot antenna is not more than 60mm.
According to the embodiment of the disclosure, the integrated broadband ridge waveguide slot antenna can be set to comprise 2 first ridge waveguide units and 2 second ridge waveguide units based on the actual required working bandwidth of the electromagnetic wave and the energy distribution condition when the electromagnetic wave is emitted outwards, wherein each first ridge waveguide unit comprises 4 slots, and each second ridge waveguide unit comprises 2 slots. The slots are arranged on a symmetry axis in the width direction of the integrated broadband ridge waveguide slot antenna, the length of each slot is 16.4mm, the width of each slot is 2mm, and the gap distance can be properly adjusted according to the energy distribution condition when electromagnetic waves are emitted outwards.
Referring to fig. 4 to fig. 8, the favorable directional diagram characteristics of the integrated broadband ridge waveguide slot antenna are further described with reference to specific embodiments.
Fig. 4 schematically illustrates a four-unit waveguide antenna port standing wave simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure.
As shown in fig. 4, after the size of the integrated broadband ridge waveguide slot antenna is determined, the standing wave ratio reflection coefficient of the electromagnetic wave port is below 1.6 in the bandwidth range of 1.5GHz, in which the electromagnetic wave input from the electromagnetic wave port is 8.85-10.35 GHz.
According to the embodiment of the disclosure, in practical use, the plane of the width direction of the integrated broadband ridge waveguide slot antenna is parallel to the horizontal plane, the plane of the length direction of the integrated broadband ridge waveguide slot antenna is perpendicular to the horizontal plane, the width direction of the integrated broadband ridge waveguide slot antenna is set as the azimuth direction, and the length direction of the integrated broadband ridge waveguide slot antenna is set as the elevation direction.
Fig. 5 schematically illustrates a pitch-wise gain simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure.
Fig. 6 schematically illustrates an azimuthal directional gain simulation schematic of an integrated broadband ridge waveguide slot antenna according to an embodiment of the disclosure.
As shown in fig. 5 and 6, after the size of the integrated broadband ridge waveguide slot antenna is determined, the elevation gain and the azimuth gain of the integrated broadband ridge waveguide slot antenna, which are obtained by simulation in the bandwidth range of 8.85 to 10.35GHz, are approximately symmetrical, and the directional diagram index is good.
According to the embodiments of the present disclosure, in practical use, the integrated wideband ridge waveguide slot antennas may be arrayed in the width direction to form an integrated wideband ridge waveguide slot antenna array. The antenna array can comprise R integrated broadband ridge waveguide slot antennas which are arranged in a direction perpendicular to a preset straight line, the antennas are arranged on the same height, and R is an integer not less than 2.
According to the embodiment of the disclosure, 48 integrated broadband ridge waveguide slot antennas can be arranged and assembled according to actual requirements, so that the integrated broadband ridge waveguide slot antenna array is obtained.
Figure 7 schematically illustrates a pitch-wise electromagnetic wave amplitude schematic of an integrated wideband ridge waveguide slot antenna array, according to an embodiment of the disclosure.
As shown in fig. 7, when the integrated wideband ridge waveguide slot antenna array operates at 9.6GHz, the beam pointing direction in the pitch direction is 0.03 °, the amplitude of the first side lobe on the left side is-18.3 dB, the amplitude of the first side lobe on the right side is-22.31db, the beam width of the first side lobe on the right side is 6.00 °, and the directional diagram index is good.
Figure 8 schematically illustrates an azimuth-direction electromagnetic wave amplitude schematic of an integrated wideband ridge waveguide slot antenna array, according to an embodiment of the present disclosure.
As shown in fig. 8, when the integrated wideband ridge waveguide slot antenna array operates at 9.6GHz, the beam direction in the azimuth direction is-0.00 °, the amplitude of the first side lobe on the left side is-13.04 dB, the amplitude of the first side lobe on the right side is-12.97db, the beam width of 3dB is 2.00 °, the directional diagram index is good, and the azimuth direction has one-dimensional large-angle scanning capability.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above embodiments are only examples of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An integrated broadband ridge waveguide slot antenna comprising:
the electromagnetic wave port is used for receiving first electromagnetic waves and sending the first electromagnetic waves to the waveguide cavity power divider;
the waveguide cavity power divider includes: the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider;
the first-stage waveguide cavity power divider, the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider respectively comprise an input end and two output ends;
an input end of the first-stage waveguide cavity power divider is connected with the electromagnetic wave port, two output ends of the first-stage waveguide cavity power divider are respectively connected with input ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider, and two output ends of the first second-stage waveguide cavity power divider and the second-stage waveguide cavity power divider are connected with the metal ridge waveguide;
the primary waveguide cavity power divider, the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are used for dividing the first electromagnetic wave into four parts; and
and the metal ridge waveguide is used for sending a second electromagnetic wave to the outside of the antenna according to the four parts of electromagnetic waves, and a gap is formed in the metal ridge waveguide.
2. The antenna of claim 1, wherein the metal ridge waveguide comprises: p first ridge waveguide units and Q second ridge waveguide units;
and arranging the P first ridge waveguide units and the Q second ridge waveguide units in a preset straight line direction according to the arrangement sequence that the P/2 first ridge waveguide units are respectively positioned at two sides and the Q second ridge waveguide units are positioned at the center, wherein P and Q are positive even numbers.
3. The antenna of claim 2, further comprising:
one output end of the first secondary waveguide cavity power divider is connected with the P/2 first ridge waveguide units on one side, and the other output end of the first secondary waveguide cavity power divider is connected with Q/2 second ridge waveguide units adjacent to the P/2 first ridge waveguide units on one side; and
and the output end of the second secondary waveguide cavity power divider adjacent to the first secondary waveguide cavity power divider is connected with the rest Q/2 second ridge waveguide units, and the other output end of the second secondary waveguide cavity power divider is connected with the rest P/2 second ridge waveguide units.
4. The antenna of claim 3, wherein the partial waveguide cavities of the first secondary waveguide cavity power divider and the second secondary waveguide cavity power divider are disposed inside the ridges of the first ridge waveguide unit and the second ridge waveguide unit, and the walls of the first ridge waveguide unit and the second ridge waveguide unit are the cavity walls of the partial waveguide cavities, respectively.
5. The antenna of claim 4, wherein P =2,Q =2.
6. The antenna of claim 4, wherein the first ridge waveguide unit includes M slots; the second ridge waveguide unit includes N slots;
the M slots are arranged on the waveguide surface of the first ridge waveguide unit opposite to the first secondary waveguide cavity power divider and penetrate through the waveguide surface of the first ridge waveguide unit;
the N slots are arranged on the waveguide surface of the second ridge waveguide unit opposite to the second secondary waveguide cavity power divider and penetrate through the waveguide surface of the second ridge waveguide unit; and
the slots are sequentially arranged on the symmetry axis of the first ridge waveguide unit and the second ridge waveguide unit in the preset linear direction, the second electromagnetic waves are sent to the outside of the antenna, and M and N are positive integers.
7. The antenna of claim 6, wherein M =4,N =2.
8. The antenna of claim 4, further comprising:
and the metal ridge waveguide is respectively provided with a fixed interface at two ends perpendicular to the direction of the preset straight line for fixing the antenna.
9. The antenna of claim 6, wherein the slot length is 16.4mm and the slot width is 2mm;
the width of the metal ridge waveguide is not more than 16mm, the length of the metal ridge waveguide is not more than 263mm, and the length direction is the preset linear direction;
the electromagnetic wave port receives a first electromagnetic wave with the working bandwidth of 8.85-10.35 GHz; and
the thickness of the antenna perpendicular to the plane of the metal ridge waveguide is not more than 60mm.
10. An integrated wideband ridge waveguide slot antenna array comprising:
r integrated broadband ridge waveguide slot antennas arranged in the direction perpendicular to the preset straight line;
the integrated broadband ridge waveguide slot antenna is the antenna as claimed in any one of claims 1 to 9, the antennas are arranged on the same height, and R is an integer not less than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211007044.8A CN115173040A (en) | 2022-08-22 | 2022-08-22 | Integrated broadband ridge waveguide slot antenna and antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211007044.8A CN115173040A (en) | 2022-08-22 | 2022-08-22 | Integrated broadband ridge waveguide slot antenna and antenna array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115173040A true CN115173040A (en) | 2022-10-11 |
Family
ID=83482241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211007044.8A Pending CN115173040A (en) | 2022-08-22 | 2022-08-22 | Integrated broadband ridge waveguide slot antenna and antenna array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115173040A (en) |
-
2022
- 2022-08-22 CN CN202211007044.8A patent/CN115173040A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7167139B2 (en) | Hexagonal array structure of dielectric rod to shape flat-topped element pattern | |
| CN107210533B (en) | Waveguide slot array antenna | |
| CN110289483B (en) | Double-frequency double-circular polarization navigation measurement and control antenna feed source | |
| Wang et al. | Waveguide slotted antenna array with broadband, dual-polarization and low cross-polarization for X-band SAR applications | |
| CN211017392U (en) | Broadband high-isolation double-circular-polarization feed source antenna | |
| CN210224293U (en) | Fixed fan-shaped wave beam CTS array antenna | |
| CN111864377B (en) | Broadband collinear seam waveguide slot antenna | |
| CN112259962A (en) | Dual-band common-aperture antenna array based on dual-mode parallel waveguide | |
| CN216450816U (en) | Ku broadband horn array antenna | |
| CN112542696B (en) | Waveguide slot antenna | |
| CN114335999A (en) | K/Ka waveband dual-band dual-circularly-polarized antenna based on gap waveguide | |
| CN114243267A (en) | Ka-band broadband dual-circularly-polarized antenna unit and array based on ridge waveguide | |
| US5903241A (en) | Waveguide horn with restricted-length septums | |
| CN116014454B (en) | Low sidelobe high XPD millimeter wave gap waveguide slot array antenna | |
| CN116487902A (en) | Dual-polarized open waveguide array antenna capable of realizing wide-angle beam deflection | |
| CN116130979A (en) | Low-sidelobe back cavity slot array antenna | |
| CA3063463A1 (en) | Multiple-port radiating element | |
| CN110707440A (en) | X-waveband broadband angle-sweeping traveling wave array antenna | |
| CN110783716A (en) | Ka-band high-gain circularly polarized antenna system | |
| CN115173040A (en) | Integrated broadband ridge waveguide slot antenna and antenna array | |
| CN112002998B (en) | One-dimensional phase-scanning distributed digital all-solid-state active dual-polarization waveguide slot array antenna | |
| RU2655033C1 (en) | Small-sized dualpolarized waveguide radiator of the phase antenna grid with high insulation between the channels | |
| Lou et al. | A flat dual-polarized continuous transverse stub antenna array based on substrate integrated waveguide | |
| CN115173039A (en) | Small-size broadband ridge waveguide antenna | |
| CN112909513B (en) | Dual-polarized waveguide slot array antenna on annular disc and combined antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |