Metal radiator array integrated structure based on air strip line

Abstract

The invention relates to a metal radiator array integrated structure based on air strip lines. The metal radiator array integrated structure comprises a plurality of first air strip lines; a second air strip line; the second air strip line forms a monitoring network; a plurality of third air grooves, wherein the plurality of first air grooves and the second air grooves are connected through the plurality of third air grooves; the plurality of metal radiators are connected with the front ends of the plurality of first air strip lines in a one-to-one correspondence manner; the plurality of T / R assemblies are connected with the rear ends of the plurality of first air strip lines in a one-to-one correspondence manner; the multiple first air strip lines, the second air strip lines and the multiple third air grooves are all arranged in the same metal structural part. According to the invention, the loss caused by a traditional microstrip line transmission network is reduced, and the accuracy of the coupling monitoring network is remarkably improved; a transmission network is formed by adopting the deflected first air strip line, so that the size of the front-end structure of the phased-array antenna is effectively compressed, the design of the antenna is more compact, and the internal space of the antenna can be fully utilized.

Description

Technical Field

[0001] The disclosed embodiments relate to the field of antenna technology, and in particular to an integrated structure of a metal radiator array based on air strip lines. Background Art

[0002] The radiator of the active phased array antenna is a metal radiating array with a large number of T / R components at the back end. How to reduce the transmission loss between the T / R components and the metal radiator array is a technical difficulty that the active phased array must overcome.

[0003] The common method currently is to rely on microstrip lines for connection, but the loss is high.

[0004] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that this section is intended to provide background or context for the technical solutions of the present disclosure stated in the claims. The description herein is not admitted to be prior art by virtue of being included in this section. Summary of the invention

[0006] The purpose of the embodiments of the present disclosure is to provide an integrated structure of a metal radiator array based on air strip lines, thereby overcoming one or more problems caused by the limitations and defects of the related art at least to a certain extent.

[0007] The embodiment of the present disclosure provides an integrated structure of a metal radiator array based on air strip lines, comprising:

[0008] A plurality of first air strip lines, each of which comprises a first air slot and a first metal strip arranged in the first air slot, the plurality of first air strip lines are all arranged in a deflected manner, and each two of the first air strip lines are connected to form a transmission line, and the plurality of transmission lines form a transmission network;

[0009] a second air stripline, the second air stripline comprising a second air slot and a second metal strip disposed in the second air slot; the second air stripline forming a monitoring network;

[0010] a plurality of third air slots, wherein the plurality of first air slots and the second air slots are connected via the plurality of third air slots, and the plurality of third air slots correspond to the plurality of first air slots one by one;

[0011] A plurality of metal radiators, wherein the plurality of metal radiators are connected to the front ends of the plurality of first air strip lines in a one-to-one correspondence;

[0012] A plurality of T / R components, wherein the plurality of T / R components are connected to the rear ends of the plurality of first air strip lines in a one-to-one correspondence;

[0013] Wherein, the plurality of the first air strip lines, the second air strip lines and the plurality of the third air slots are all arranged in the same metal structure.

[0014] In one embodiment of the present disclosure, a distance between front ends of two first air strip lines is greater than a distance between rear ends of two first air strip lines.

[0015] In one embodiment of the present disclosure, a distance between the front ends of the two first air strip lines is 11-13 mm, and a distance between the rear ends of the two first air strip lines is 9-10 mm.

[0016] In an embodiment of the present disclosure, the front end of the first air stripline is formed by bending half of the first air stripline.

[0017] In one embodiment of the present disclosure, rear ends of the plurality of first air strip lines are distributed in a rectangular grid.

[0018] In one embodiment of the present disclosure, two first air strip lines in each transmission line are connected via a coaxial connector.

[0019] In an embodiment of the present disclosure, a first signal output port and a second signal output port are respectively provided at two ends of the metal structure, and two ends of the second air strip line are respectively connected to the first signal output port and the second signal output port.

[0020] In one embodiment of the present disclosure, the cross-section of the third air groove is a rectangle, and the length of the rectangle is 1.4-2.0 mm and the width is 0.3-0.6 mm.

[0021] In an embodiment of the present disclosure, an extending direction of the third air slot forms a preset angle with the vertical direction.

[0022] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0023] The integrated structure of the metal radiator array based on the air strip line in the disclosed embodiment uses the third air slot to couple the first air strip line and the second air strip line, and the first air strip line is connected to the metal radiator, and the second air strip line is connected to the T / R component, so that the metal radiator and the T / R component are connected, realizing the integrated design of the transmission network and the monitoring network. This application not only reduces the loss caused by the traditional microstrip line transmission network, but also significantly improves the accuracy of the coupled monitoring network; the transmission network is formed by using the deflected first air strip line, which effectively compresses the size of the front-end structure of the phased array antenna, making the antenna design more compact and making full use of its internal space. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings herein are incorporated into the specification and constitute a part of the specification, represent embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 A schematic diagram showing the positional relationship between the first air strip line and the second air strip line in an exemplary embodiment of the present disclosure;

[0026] Figure 2 A schematic diagram of the main structure of an integrated structure of a metal radiator array based on air strip lines in an exemplary embodiment of the present disclosure is shown;

[0027] Figure 3 A schematic diagram showing a top view of an integrated structure of a metal radiator array based on air strip lines in an exemplary embodiment of the present disclosure;

[0028] Figure 4 A standing wave diagram showing the integration of a transmission network and a monitoring network in an exemplary embodiment of the present disclosure is shown;

[0029] Figure 5 A transmission loss diagram showing the integration of a transmission network and a monitoring network in an exemplary embodiment of the present disclosure;

[0030] Figure 6 A diagram showing the integrated coupling degree of the transmission network and the monitoring network in an exemplary embodiment of the present disclosure is shown.

[0031] Reference numerals:

[0032] 100, first air strip line; 101, first air slot; 102, first metal strip; 103, coaxial connector; 200, second air strip line; 201, second air slot; 202, second metal strip; 300, third air slot; 400, metal radiator; 500, T / R assembly; 600, metal structural part; 601, first signal output port; 602, second signal output port. DETAILED DESCRIPTION

[0033] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0034] In addition, the accompanying drawings are only schematic illustrations of the embodiments of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated descriptions will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0035] This example embodiment provides an integrated structure of a metal radiator array based on air strip lines, please refer to Figure 1-Figure 3 , may include: a plurality of first air strip lines 100 , a second air strip line 200 , a plurality of third air slots 300 , a plurality of metal radiators 400 and a plurality of T / R components 500 .

[0036] Specifically, each of the first air strip lines 100 includes a first air slot 101 and a first metal strip 102 arranged in the first air slot 101, and the plurality of first air strip lines 100 are all arranged in a deflected manner, and every two first air strip lines 100 are connected to form a transmission line, and the plurality of transmission lines form a transmission network.

[0037] The second air stripline 200 includes a second air slot 201 and a second metal strip 202 disposed in the second air slot 201 ; the second air stripline 200 forms a monitoring network.

[0038] The plurality of first air slots 101 and the second air slots 201 are connected via the plurality of third air slots 300 , and the plurality of third air slots 300 correspond to the plurality of first air slots 101 one by one.

[0039] The plurality of metal radiators 400 are connected to the front ends of the plurality of first air strip lines 100 in a one-to-one correspondence; and the plurality of T / R components 500 are connected to the rear ends of the plurality of first air strip lines 100 in a one-to-one correspondence.

[0040] The plurality of first air strip lines 100 , the second air strip lines 200 and the plurality of third air slots 300 are all disposed in the same metal structure 600 .

[0041] It should be noted that the last first air stripline 100 and the T / R assembly 500 are connected via a section of microstrip line.

[0042] Figure 1 In the figure, only the connection relationship and position relationship diagram between a first air stripline 100 and part of the second air stripline 200 are shown. Figure 2 In the figure, only five metal radiators 400 and four T / R components 500 are shown, and the metal radiators 400 and T / R components 500 in other parts are not shown. Figure 3 In the figure, only Figure 2 The middle part is omitted because it is too long.

[0043] In this embodiment, the first air strip line 100 and the second air strip line 200 are coupled by using the third air slot 300, and the first air strip line 100 is connected to the metal radiator 400, and the second air strip line 200 is connected to the T / R component 500, so that the metal radiator 400 and the T / R component 500 are connected, realizing the integrated design of the transmission network and the monitoring network. This application not only reduces the loss caused by the traditional microstrip line transmission network, but also significantly improves the accuracy of the coupling monitoring network; the deflected first air strip line 100 is used to form a transmission network, which effectively compresses the size of the front-end structure of the phased array antenna, making the antenna design more compact and making full use of its internal space.

[0044] Optionally, in some embodiments, the spacing between the front ends of the two first air strip lines 100 is greater than the spacing between the rear ends of the two first air strip lines 100. The front end spacing may be 11 to 13 mm, for example, 12.2 mm; the rear end spacing may be 9 to 10 mm, for example, 9.5 mm. The horizontal spacing between the two T / R components 500 is twice the longitudinal unit spacing, leaving enough space for heat dissipation equipment, power wave control boards, etc., making the antenna structure more compact.

[0045] Optionally, in some embodiments, two first air strip lines 100 in each transmission line are connected via a coaxial connector 103; after the multiple first air strip lines 100 are deflected, every two are connected via a coaxial connector 103 to form a transmission network, thereby realizing information transmission between the T / R component 500 and the metal radiator 400.

[0046] Usually, the monitoring network is located below the transmission network, and the two are connected through a plurality of third air slots 300. The cross-sectional shape of the third air slot 300 may be a rectangle, the length of which is 1.4 to 2.0 mm, for example, 1.6 mm; the width is 0.3 to 0.6 mm, for example, 0.5 mm. The third air slot 300 is used to indirectly couple the metal radiator 400 and the T / R component 500, and transmit the signal to the first signal output port 601 and the second signal output port 602 at both ends of the second air strip line 200, for detecting the amplitude, phase and other information of the signal of the metal radiator 400 and the T / R component 500. The first signal output port 601 and the second signal output port 602 are arranged at both ends of the metal structure 600.

[0047] In addition, the extension direction of the third air slot 300 forms a preset angle with the vertical direction, such as 30°, 45°, etc. The third air slot 300 may be a rectangular air slot with an oblique opening.

[0048] When the phased array is in the state of transmitting signals, the signal of the T / R component 500 is transmitted to the metal radiator 400 of each unit through the transmission network of the first air strip line 100, and then each metal radiator 400 transmits the signal to the distant target through the air. When the phased array is in the receiving state, the signal received by the metal radiator 400 is transmitted to the T / R component 500 via the reverse route of the transmitting state. When the phased array is in the transmitting state, the signal transmitted by the T / R component 500 is coupled to a small signal through the coupler into the detection circuit, and the amplitude and phase value of the T / R channel are measured. When the receiving state is detected, the detection signal is coupled to the main channel through the coupler and sent to the T / R component 500. The direction of the antenna radiation unit (metal radiator 400) is the isolation end, and almost no signal will be transmitted to the antenna unit.

[0049] In the above embodiments, optionally, the front end of the first air strip line 100 is formed by bending half of the first air strip line 100 ; and the rear ends of a plurality of the first air strip lines 100 are distributed in a rectangular grid.

[0050] The transmission network and monitoring network have been integrated into one design, which effectively reduces external interference, improves the accuracy of antenna monitoring, and greatly reduces transmission loss. Figure 5 As shown in the transmission loss graph, the present application can achieve a transmission loss value of about 0.055dB, which is about 0.3dB less than the traditional microstrip transmission network and enhances the accuracy of the received signal. Figure 6 As shown, the coupling loss of the present application is less than 51dB. Figure 4 It can be seen that the integrated standing wave of the transmission network and monitoring network of the present application is lower than 1.15.

[0051] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like in the above description indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present disclosure.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0054] In the embodiments of the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0056] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. An integrated structure of a metal radiator array based on air strip lines, characterized in that: include: A plurality of first air strip lines, each of which comprises a first air slot and a first metal strip disposed in the first air slot, the plurality of first air strip lines are all disposed in a deflected manner, and each two of the first air strip lines are connected to form a transmission line, and the plurality of transmission lines form a transmission network; a second air stripline, the second air stripline comprising a second air slot and a second metal strip disposed in the second air slot; the second air stripline forming a monitoring network; a plurality of third air slots, wherein the plurality of first air slots and the second air slots are connected via the plurality of third air slots, and the plurality of third air slots correspond to the plurality of first air slots one by one; A plurality of metal radiators, wherein the plurality of metal radiators are connected to the front ends of the plurality of first air strip lines in a one-to-one correspondence; A plurality of T / R components, wherein the plurality of T / R components are connected to the rear ends of the plurality of first air strip lines in a one-to-one correspondence; Wherein, the plurality of the first air strip lines, the second air strip lines and the plurality of the third air slots are all arranged in the same metal structure.

2. The integrated structure of metal radiator array based on air strip line according to claim 1, characterized in that: The distance between the front ends of the two first air strip lines is greater than the distance between the rear ends of the two first air strip lines.

3. The integrated structure of metal radiator array based on air strip line according to claim 2, characterized in that: The distance between the front ends of the two first air strip lines is 11-13 mm, and the distance between the rear ends of the two first air strip lines is 9-10 mm.

4. The integrated structure of metal radiator array based on air strip line according to claim 1, characterized in that: The front end of the first air stripline is formed by bending half of the first air stripline.

5. The integrated structure of metal radiator array based on air strip line according to claim 1, characterized in that: The rear ends of the plurality of first air strip lines are distributed in a rectangular grid.

6. The integrated structure of metal radiator array based on air strip line according to claim 1, characterized in that: Two first air strip lines in each transmission line are connected via a coaxial connector.

7. The integrated structure of metal radiator array based on air strip line according to any one of claims 1 to 6, characterized in that: The two ends of the metal structure are respectively provided with a first signal output port and a second signal output port, and the two ends of the second air strip line are respectively connected to the first signal output port and the second signal output port.

8. The integrated structure of metal radiator array based on air strip line according to any one of claims 1 to 6, characterized in that: The cross section of the third air groove is a rectangle, and the length of the rectangle is 1.4-2.0 mm and the width is 0.3-0.6 mm.

9. The integrated structure of metal radiator array based on air strip line according to claim 8, characterized in that: An extending direction of the third air slot forms a preset angle with the vertical direction.

Images