CN218827839U

CN218827839U - Monopulse antenna with phase control system

Info

Publication number: CN218827839U
Application number: CN202223504058.9U
Authority: CN
Inventors: 丁钟鸣; 符友; 雷敏
Original assignee: CETC Yangzhou Baojun Electronic Co Ltd
Current assignee: CETC Yangzhou Baojun Electronic Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-07
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a monopulse antenna of phase control system relates to antenna technical field, include: an antenna chassis; the array is arranged on the antenna base plate at intervals; the array includes: the array base is arranged on the antenna bottom plate, and an assembly groove is formed in the array base; the antenna printed board is inserted into the assembling groove; the two protection plates are arranged on the array base, and an antenna printed board is arranged between the protection plates; the radio frequency connector is arranged at the bottom of the array base, and the top of the radio frequency connector is positioned in the assembling groove and connected with the antenna printed board; the array shield is sleeved on the outer side of the protection plate and connected with the side edge of the assembly groove. The utility model provides an among the prior art interrogator antenna interference immunity poor, the not convenient to maintain's technical problem.

Description

Monopulse antenna with phase control system

Technical Field

The utility model relates to an antenna technology field especially relates to a phase control system monopulse antenna.

Background

The interrogator antenna is arranged on the radar array antenna frame and used for receiving different aircraft signals, different aircraft information is distinguished through the interrogator, and a reliable discrimination signal source is provided for radar guidance.

The traditional interrogator antenna is in a plane structure form, and the antenna needs to rotate, so that the requirement on the antenna is high; the antenna of the type is divided into two types, one type is a single array subunit, the anti-interference capability of the antenna of the type is poor, the requirements of certain working environments cannot be met, the other type is a plurality of array subunits, the antenna of the type is usually packaged together, a subsequent control circuit is complex, and the maintenance is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a phase control system monopulse antenna has solved among the prior art technical problem that interrogator antenna interference immunity is poor, be not convenient for maintain.

The embodiment of the application discloses phase control system monopulse antenna includes:

an antenna chassis;

a plurality of arrays mounted on the antenna backplane at intervals; the array comprises:

the array base is arranged on the antenna bottom plate, and an assembly groove is formed in the array base;

the antenna printed board is inserted into the assembly groove;

the two protection plates are arranged on the array base, and the antenna printed board is arranged between the protection plates;

the radio frequency connector is arranged at the bottom of the array base, and the top of the radio frequency connector is positioned in the assembling groove and connected with the antenna printed board;

the array shield is sleeved outside the protection plate, and the array shield is connected with the side of the assembling groove.

This application designs the battle, and every battle encapsulates alone promptly, and the follow-up maintenance of being convenient for through designing a plurality of battle moreover, can improve the anti-interference performance of antenna.

On the basis of the technical scheme, the embodiment of the application can be further improved as follows:

furthermore, the number of the array is nine, and the beneficial effect of the step is that the anti-interference performance of the antenna can be improved through a plurality of arrays.

Furthermore, the back of antenna bottom plate is provided with a plurality of bosses along its length direction interval, and the beneficial effect of this step of adoption is that can improve antenna bottom plate's bulk strength through a plurality of bosses.

Furthermore, the longitudinal section of the reinforcing block is triangular, and the beneficial effect of the step is to further ensure the strength of the antenna base plate.

Furthermore, the side of the assembly groove and the corresponding position of the top of the radio frequency connector are provided with an avoiding groove, and the beneficial effect of the step is that related components can be assembled conveniently by the avoiding groove.

Furthermore, the front side of the antenna printed board is provided with the dipole unit, and the back side of the antenna printed board is provided with the microstrip line feed balun.

Furthermore, a rectangular matching groove is formed in the upper portion of the center of the dipole unit, dipole arms which are symmetrical to each other extend out of two sides of the matching groove of the dipole unit, and the dipole arms are in a transverse L shape;

the microstrip line feed balun comprises a feed microstrip line, a coupling microstrip line and an open circuit line which are connected in sequence, wherein the feed microstrip line is in a ladder shape.

Further, the thickness of the antenna printed board is 1mm, eight of the radio frequency connectors are SMA radio frequency connectors, and the remaining one of the radio frequency connectors is a TNC radio frequency connector.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. the antenna can realize the +/-45-degree beam scanning of the azimuth plane; the antenna has 9 arrays, wherein eight arrays are used for synthesizing sum and difference beams of the antenna, and 1 array on the rightmost side generates a single beam for inhibiting the side lobe of the sum beam, so that the anti-interference capability of the system is improved.

3. 9 arrays in this application design alone and encapsulate, every exclusive use connector behind one's back is connected with the host computer, if take place to damage, can independently disassemble, change spare part maintenance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a monopulse antenna with a phase control system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the array of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

fig. 4 is a schematic structural view of the front surface of the antenna printed board in fig. 3;

fig. 5 is a schematic diagram of a reverse structure of the antenna printed board in fig. 3;

1-an antenna backplane; 2-an array; 3-a reinforcing block;

201-array base; 202-an assembly groove; 203-antenna printed board; 204-protective plate; 205-a radio frequency connector; 206-array shield; 207-avoidance groove;

208-dipole elements; 209-microstrip line feed balun;

210-a matching slot; 211-dipole arms;

212-a feed microstrip line; 213-a coupled microstrip line; 214-open route.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the detailed description.

The embodiment is as follows:

as shown in fig. 1 to 5, the embodiment of the present application discloses a monopulse antenna with a phase control system as a planar antenna structure for providing a receiving and radiating high-frequency signal for an interrogator;

the concrete structure comprises:

the antenna base plate 1 is used as a supporting plate and used for completing the connection and the support of the array;

a plurality of arrays 2 mounted on the antenna base plate 1 at intervals; the array 2 comprises:

the array base 201 is installed on the antenna base plate 1, an assembling groove 202 is formed in the array base 201, and the array base 201 serves as a supporting piece and is used for installing corresponding antenna components to guarantee structural stability;

an antenna printed board 203 inserted into the assembly groove 202, wherein an antenna unit is arranged on the antenna printed board 203;

the two protection plates 204 are arranged on the array base 201, and the antenna printed board 203 is arranged between the two protection plates 204;

the radio frequency connector 205 is installed at the bottom of the array base 201, and the top of the radio frequency connector 205 is located inside the assembling groove 202 and connected with the antenna printed board 203;

the array shield 206 is sleeved outside the protection plate 204, the array shield 206 is connected with the side edge of the assembly groove 202, and the array shield 206 is used for perfecting the assembly of relevant accessories inside the array and avoiding the antenna from being influenced by the external environment; the array shield 206 is bolted to the side of the mounting slot 202.

This application realizes the encapsulation of antenna through parts such as array base, array guard shield, can realize the independent processing and the change of antenna like this.

The number of the array 2 is nine, eight antenna units are used for synthesizing sum and difference beams of the antenna, and the rightmost 1 antenna unit generates a single beam for suppressing the side lobe of the sum beam, so that the anti-interference capability of the system is improved.

The back of the antenna base plate 1 is provided with a plurality of reinforcing blocks 3 at intervals along the length direction of the back of the antenna base plate 1, the reinforcing blocks 3 can improve the overall strength of the antenna base plate 1, specifically, the array 2 is arranged on the front of the antenna base plate 1, the reinforcing blocks 3 are arranged on the back of the antenna base plate, and specifically, one reinforcing block 3 is arranged between every two arrays, so that the stability is ensured.

The longitudinal section of the reinforcing block 3 is triangular, so that the overall strength of the antenna base plate 1 can be improved.

An avoiding groove 207 is formed at a position corresponding to the top of the radio frequency connector 205 on the side of the assembling groove 202, and the avoiding groove 207 is convenient for assembling the radio frequency connector 205.

Wherein, the front surface of the antenna printed board 203 is provided with a dipole unit 208, and the back surface is provided with a microstrip line feed balun 209; the dipole unit 208 and the microstrip line feed balun 209 can realize the function of an antenna.

A rectangular matching slot 210 is formed in the upper center of the dipole unit 208, dipole arms 211 which are symmetrical to each other extend from two sides of the matching slot 210 of the dipole unit 208, and the dipole arms 211 are in a transverse L shape;

the microstrip line feed balun 209 comprises a feed microstrip line 212, a coupling microstrip line 213 and an open circuit line 214 which are connected in sequence, wherein the feed microstrip line 213 is in a ladder shape; the specific structure of the dipole unit 208 and the microstrip line feed balun 209 in the present application can realize the antenna function.

The thickness of the antenna printed board 203 is 1mm, eight of the radio frequency connectors 205 are SMA radio frequency connectors, and the remaining one of the radio frequency connectors 205 is a TNC radio frequency connector; the phased system monopulse antenna can achieve azimuth plane +/-45-degree beam scanning. The antenna unit comprises nine antenna units, wherein eight antenna units are used for synthesizing sum and difference beams of the antenna, and the rightmost antenna unit generates a single beam for suppressing the side lobe of the sum beam, so that the anti-interference capability of the system is improved.

In the description of the present invention, a number of specific details are described. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A monopulse antenna with a phase control system is characterized by comprising:

an antenna chassis;

the antenna printed board is inserted into the assembling groove;

and the array shield is sleeved on the outer side of the protection plate and is connected with the side edge of the assembly groove.

2. The phased system monopulse antenna of claim 1, wherein the number of said arrays is nine.

3. A phased system monopulse antenna according to claim 1, wherein the back surface of said antenna substrate is provided with a plurality of reinforcing blocks at intervals along its length.

4. A phased system monopulse antenna according to claim 3, wherein said reinforcing block has a triangular longitudinal cross-section.

5. The phased system monopulse antenna according to claim 1, wherein an avoidance groove is formed at a side of the assembly groove corresponding to a top of the radio frequency connector.

6. The phased-system monopulse antenna according to claim 1, wherein the antenna printed board is provided with dipole elements on a front surface and microstrip line feed balun on a back surface.

7. The phased-system monopulse antenna according to claim 6, wherein a rectangular matching groove is formed in an upper central portion of the dipole unit, and dipole arms which are symmetrical to each other extend from both sides of the matching groove of the dipole unit, respectively, and the dipole arms are in a transverse L shape;

8. A phased system monopulse antenna according to claim 1, wherein said antenna printed board has a thickness of 1mm, wherein eight of said radio frequency contacts are SMA radio frequency contacts and the remaining one of said radio frequency contacts is a TNC radio frequency contact.