Dual-polarization printing umbrella-shaped dipole array antenna

Abstract

The utility model discloses a dual-polarization printing umbrella-shaped dipole array antenna, which comprises a reflecting plate, a plurality of umbrella-shaped dipole antenna units and a feed network PCB (printed circuit board), and is characterized in that a plurality of cross-shaped grooves are formed in the reflecting plate; each umbrella-shaped dipole antenna unit comprises a first radiation unit and a second radiation unit, the first radiation unit is inserted on the second radiation unit, and the first radiation unit and the second radiation unit are orthogonally engaged; the first radiation unit and the second radiation unit are inserted into the cross-shaped groove; and the second radiation unit of each umbrella-shaped dipole antenna unit and the feed network PCB are integrally designed. According to the umbrella-shaped dipole array antenna, the first window is arranged on the first radiation unit, the second window is arranged on the feed network PCB, the feed microstrip is in butt joint with the feed point of the first radiation unit in structure, batch installation and positioning of the radiation units are realized through welding, and the assembling process of the umbrella-shaped dipole array antenna is greatly simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to printed dipole antenna technical field especially relates to a kind of bipolar printed umbrella dipole array antenna. BACKGROUND

[0002] With the continuous development of communication technology, the development and rapid progress of modern microwave communication means, the requirement of antenna is higher and higher in microwave communication, microwave navigation, satellite communication and military electronic warfare etc., and array antenna is an important link in the development of antenna.

[0003] Printed umbrella dipole antenna unit adopts umbrella structure, so that the antenna has larger aperture after unfolding, which helps to improve antenna gain and directivity;At the same time, array antenna can further enhance directivity, improve gain coefficient and improve the intensity and directivity of radiation field. However, due to the shape restriction of umbrella dipole, the vibrator unit of one polarization needs to be installed orthogonally and independently during the design of dual-polarized antenna. Generally, insulator or other connector adapter is used for installation by using angle code structure for fixing. However, when large array is processed, the large number of vibrators makes the process very complex. At the same time, the metal plate is generally used for processing in the form of metal plate in the conventional case, and due to the problem of inconsistent heat dissipation of metal plate and printed circuit board, welding is difficult. SUMMARY

[0004] The utility model aims at providing a kind of bipolar printed umbrella dipole array antenna to solve the problem of vibrator unit installation complexity in traditional scheme and at least one of the problems of welding difficulty caused by inconsistent heat dissipation of metal plate and printed circuit board.

[0005] The utility model is to solve the above technical problem by the following technical scheme: a kind of bipolar printed umbrella dipole array antenna, including reflector plate, multiple umbrella dipole antenna units and feed network PCB, multiple cross type slots are provided on the reflector plate, each cross type slot corresponds to an umbrella dipole antenna unit;Each umbrella dipole antenna unit includes first radiating unit and second radiating unit, the first radiating unit is inserted in second radiating unit, and the first radiating unit and second radiating unit are orthogonal and occluded;The first radiating unit and second radiating unit are inserted in corresponding cross type slot;Second radiating unit of each umbrella dipole antenna unit is integrally designed with the feed network PCB.

[0006] Further, the first radiating unit comprises a first substrate and a second substrate arranged in a stack, and first dipole arms arranged on both sides of the upper part of the first substrate and the second substrate; a first slot is arranged at the lower part of the middle position of the first radiating unit, a first window is arranged at the bottom side of the first slot, a first microstrip feed line is arranged at the first window, and the first microstrip feed line is connected with a first strip feed line, and the first strip feed line is arranged between the first substrate and the second substrate; a first gap is arranged at the side of the first window close to the first slot;

[0007] The second radiating unit comprises a third substrate and a fourth substrate arranged in a stack, and second dipole arms arranged on both sides of the upper part of the third substrate and the fourth substrate; a second slot is arranged at the upper part of the middle position of the second radiating unit, and a second strip feed line is arranged between the third substrate and the fourth substrate;

[0008] The feeding network PCB comprises a fifth substrate and a sixth substrate arranged in a stack, and a first feeding network and a second feeding network arranged between the fifth substrate and the sixth substrate, the fifth substrate is designed in an integrated manner with each third substrate, and the sixth substrate is designed in an integrated manner with each fourth substrate; the first feeding network is used for feeding each first radiating unit, the second feeding network is designed in an integrated manner with each second strip feed line and is used for feeding each second radiating unit; a plurality of second windows are arranged at the side of the fifth substrate and the sixth substrate close to the second radiating unit, a second microstrip feed line is arranged at each second window, and the second microstrip feed line is connected with the first feeding network; a second gap is arranged at the side of each second window; the number of the second windows matches the number of the umbrella-shaped dipole antenna units;

[0009] When the first radiating unit is inserted into the second radiating unit, the second microstrip feed line is in contact with the first microstrip feed line, the second substrate corresponding to the first window is inserted into the second gap, and the sixth substrate corresponding to the second window is inserted into the first gap.

[0010] Further, the first microstrip feed line is obtained by removing the upper layer medium of the part of the first strip feed line exposed to the first window, the second microstrip feed line is obtained by removing the upper layer medium of the part of the third strip feed line exposed to the second window, and the first feeding network comprises the third strip feed line.

[0011] Further, the width of the first slot is equal to the sum of the thicknesses of the third substrate and the fourth substrate, and the depth of the first slot is equal to the height of the third substrate or the fourth substrate below the second slot;

[0012] The width of the second slot is equal to the sum of the thicknesses of the first substrate and the second substrate, and the depth of the second slot is equal to the height of the first substrate or the second substrate above the first slot.

[0013] Further, the width of the first gap is equal to the thickness of the sixth substrate; and the width of the second gap is equal to the thickness of the second substrate.

[0014] Further, the first feeding network and the second feeding network are both power dividing networks, and the two power dividing networks are arranged back to back.

[0015] Further, the first stage of the power dividing network adopts a Wilkinson power divider, and the other stages adopt T-type power dividers.

[0016] Further, the width and length of the cross-shaped slot are consistent with the width and length of the corresponding positions of the first and second radiation units.

[0017] Further, the plurality of cross-shaped slots on the reflecting plate are arranged in a linear type, and the reflecting plate is a PCB plate.

[0018] Advantages

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The utility model discloses the cross-shaped slot on the reflecting plate is used to limit the first and second radiation units of two polarizations, ensures the orthogonal installation of the first and second radiation units, and simplifies the installation process.

[0021] The reflecting plate of the utility model adopts a PCB plate, effectively solves the problem of inconsistent heat dissipation of the metal plate and the printed circuit board caused by using the metal plate as the reflecting plate, and further solves the problem of welding difficulty. DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model, the following will be needed to use the drawings in the embodiment description briefly introduced, obviously, the following description in the drawings is only one embodiment of the utility model, and for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0023] Figure 1 It is the front view of the dual-polarized printed umbrella-shaped dipole array antenna after assembly in the embodiment of the utility model;

[0024] Figure 2 It is the side view of the dual-polarized printed umbrella-shaped dipole array antenna after assembly in the embodiment of the utility model.

[0025] Figure 3 is the oblique view of the dual-polarized printed umbrella-shaped dipole array antenna after assembly in the embodiment of the utility model;

[0026] Figure 4 is the schematic view of the reflecting plate structure in the embodiment of the utility model;

[0027] Figure 5 is the schematic view of the first radiating unit structure in the embodiment of the utility model;

[0028] Figure 6 is the schematic view of the second radiating unit structure in the embodiment of the utility model;

[0029] Figure 7 is the schematic view of the feeding network PCB in the embodiment of the utility model;

[0030] Figure 8 is the first local enlarged view of the feeding network PCB in the embodiment of the utility model;

[0031] Figure 9 is the second local enlarged view of the feeding network PCB in the embodiment of the utility model;

[0032] Figure 10 is the schematic view of the first radiating unit and the second radiating unit after assembly in the embodiment of the utility model.

[0033] Mark 1-reflecting plate, 101-cross-shaped slot, 2-first radiating unit, 201-first oscillator arm, 202-first slot, 203-second base plate, 204-first base plate, 205-first window, 206-first microstrip feed line, 207-first gap, 208-first strip feed line, 3-second radiating unit, 301-second oscillator arm, 302-second slot, 303-second strip feed line, 4-feeding network PCB, 401-first feeding network, 402-second feeding network, 403-second window, 404-second microstrip feed line, 405-second gap, 406-fifth base plate, 407-sixth base plate. DETAILED DESCRIPTION

[0034] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] The technical solutions of the present application are described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described in detail in some examples.

[0036] As shown in Figures 1 to 4 and Figure 10 , the bipolar printed umbrella-shaped dipole array antenna provided by the embodiment includes a reflector plate 1, a plurality of umbrella-shaped dipole antenna units, and a feed network PCB 4 (Printed Circuit Board), a plurality of cross-shaped slots 101 are provided on the reflector plate 1, and each cross-shaped slot 101 corresponds to an umbrella-shaped dipole antenna unit; each umbrella-shaped dipole antenna unit includes a first radiation unit 2 and a second radiation unit 3, the first radiation unit 2 is inserted into the second radiation unit 3, and the first radiation unit 2 and the second radiation unit 3 are orthogonal and engaged; the first radiation unit 2 and the second radiation unit 3 are inserted into the corresponding cross-shaped slot 101; the second radiation unit 3 of each umbrella-shaped dipole antenna unit is designed integrally with the feed network PCB 4.

[0037] Taking a bipolar printed umbrella-shaped dipole array antenna with 16-unit narrow beam and low sidelobe pattern as an example, the number of 1 umbrella-shaped dipole antenna units is 16, and the number of cross-shaped slots 101 on the reflector plate 1 is also 16.

[0038] As shown in Figure 5 , the first radiation unit 2 includes a first substrate 204 and a second substrate 203 arranged in layers, and a first dipole arm 201 arranged on both sides of the upper part of the first substrate 204 and the second substrate 203; a first slot 202 is formed at the lower part of the middle position of the first radiation unit 2, a first window 205 is formed at the bottom side of the first slot 202, a first microstrip feed line 206 is arranged at the first window 205, and the first microstrip feed line 206 is connected with a first strip-shaped feed line 208, the first strip-shaped feed line 208 is located between the first substrate 204 and the second substrate 203; a first gap 207 is formed at the side of the first window 205 close to the first slot 202.

[0039] The width of the first slot 202 is adapted to the sum of the thicknesses of the third substrate and the fourth substrate of the second radiation unit 3, so that the first radiation unit 2 is inserted into the second radiation unit 3 through the first slot 202, and the first radiation unit 2 and the second radiation unit 3 are orthogonal and engaged.

[0040] The first base plate 204 on one side of the bottom of the first slot 202 is removed, and a first window 205 is obtained; the second base plate 203 and the first strip-shaped feed line 208 are exposed through the first window 205, and the upper layer medium of the exposed first strip-shaped feed line 208 is removed, and a first microstrip feed line 206 is obtained. By transforming the original part of the first strip-shaped feed line 208 into the first microstrip feed line 206, it is ensured that the impedance between the first strip-shaped feed line 208 and the first microstrip feed line 206 will not be mismatched.

[0041] The first gap 207 is used for the first radiation unit 2 and the second radiation unit 3 to be assembled, and the first microstrip feed line 206 and the second microstrip feed line 404 can realize zero-distance contact.

[0042] As shown in Figure 6 The second radiation unit 3 includes a third base plate and a fourth base plate which are stacked, and a second vibrator arm 301 which is arranged on both sides of the upper part of the third base plate and the fourth base plate; a second slot 302 is arranged on the upper part of the middle position of the second radiation unit 3, and a second strip-shaped feed line 303 is arranged between the third base plate and the fourth base plate.

[0043] The width of the second slot 302 is adapted to the sum of the thicknesses of the first base plate 204 and the second base plate 203 of the first radiation unit 2, so that the first radiation unit 2 is inserted and assembled on the second radiation unit 3 through the first slot 202 and the second slot 302, and the first radiation unit 2 and the second radiation unit 3 are orthogonal and engaged. In this embodiment, the depth of the first slot 202 is equal to the height of the third base plate or the fourth base plate below the second slot 302, and the depth of the second slot 302 is equal to the height of the first base plate 204 or the second base plate 203 above the first slot 202, so that the top of the first radiation unit 2 and the top of the second radiation unit 3 are flush after the first radiation unit 2 and the second radiation unit 3 are assembled. The second strip-shaped feed line 303 is used for connecting with the second feed network 402, so that the second feed network 402 can feed the second radiation unit 3.

[0044] As shown in Figures 6 to 9As shown, the feed network PCB 4 includes a fifth substrate 406 and a sixth substrate 407 stacked together, and a first feed network 401 and a second feed network 402 disposed between the fifth substrate 406 and the sixth substrate 407. The fifth substrate 406 is integrated with each third substrate, and the sixth substrate 407 is integrated with each fourth substrate. The first feed network 401 is used to feed each first radiating element 2, and the second feed network 402 is integrated with each second strip feed line 303 and is used to feed each second radiating element 3. A plurality of second windows 403 are opened on the side of the fifth substrate 406 and the sixth substrate 407 near the second radiating element 3. A second microstrip feed line 404 is provided in each second window 403, and the second microstrip feed line 404 is connected to the first feed network 401. A second gap 405 is opened on one side of each second window 403. The number of second windows 403 matches the number of umbrella dipole antenna elements.

[0045] The position of the second window 403 corresponds to the assembly position of the first radiating unit 2 on the feed network PCB 4. The fifth substrate 406 at this position is removed to obtain the second window 403. The sixth substrate 407 and part of the third strip feed line are exposed through the second window 403. The upper dielectric layer of the exposed third strip feed line is then removed to obtain the second microstrip feed line 404. By transforming the original partial design of the third strip feed line into the second microstrip feed line 404, impedance mismatch between the third strip feed line and the second microstrip feed line 404 is ensured. The third strip feed line belongs to the first feed network 401, and thus the first feed network 401 is connected to the second microstrip feed line 404. When the first radiating unit 2 and the second radiating unit 3 are assembled, the second microstrip feed line 404 comes into contact with the first microstrip feed line 206. Then the first feed network 401 is connected to the first strip feed line 208 in sequence through the second microstrip feed line 404 and the first microstrip feed line 206 to realize the feeding of the first radiating unit 2. The second feed network 402 and the second strip feed line 303 are integrated into one design, and the second feed network 402 directly feeds the second radiating unit 3.

[0046] The second gap 405 is used to enable the first microstrip feed line 206 and the second microstrip feed line 404 to achieve zero-distance contact when the first radiation unit 2 and the second radiation unit 3 are assembled.

[0047] like Figure 10 As shown, when the first radiating unit 2 is inserted into the second radiating unit 3, the second microstrip feed line 404 is in direct contact with the first microstrip feed line 206, the second substrate 203 corresponding to the first window 205 (i.e. the exposed second substrate 203) is inserted into the second gap 405; the sixth substrate 407 corresponding to the second window 403 (i.e. the exposed sixth substrate 407) is inserted into the first gap 207.

[0048] In the specific embodiment of the utility model, the first feeding network 401 and the second feeding network 402 are both power division networks, and the two power division networks are arranged back to back. The first stage of the power division network adopts a Wilkinson power divider, and other stages adopt T-type power dividers. This kind of power division network can meet the shaping requirements and realize better port impedance.

[0049] In the specific embodiment of the utility model, the width and length of the cross-shaped groove 101 are consistent with the width and length of the corresponding positions of the first and second radiation units 2 and 3, so as to ensure the accuracy of the limiting.

[0050] In the specific embodiment of the utility model, the multiple cross-shaped grooves 101 on the reflecting plate 1 are arranged in a linear type, and the reflecting plate 1 is a PCB plate, which solves the problem of difficult welding between the metal plate and the printed circuit board caused by the metal plate being the reflecting plate 1.

[0051] The utility model realizes the positioning of the umbrella-shaped dipole antenna unit through the reflecting plate 1 and the cross-shaped groove 101 on the reflecting plate 1, and further realizes rapid assembly; and realizes the stereoscopic assembly of the feeding network feeding port and the radiation unit feeding port through the first window 205 and the second window 403.

[0052] The specific assembly process of the dual-polarized printed umbrella-shaped dipole array antenna is as follows:

[0053] Insert all the second radiation units 3 integrated with the feeding network PCB 4 into the corresponding cross-shaped grooves 101 of the reflecting plate 1; insert each first radiation unit 2 into the corresponding second radiation unit 3 and the corresponding cross-shaped groove of the reflecting plate 1 according to the direction of the first and second microstrip feed lines 206 and 404 on the same side; adopt a welding method such as manual welding or laser welding to weld the corresponding first and second microstrip feed lines 206 and 404 together; adopt a welding method such as manual welding or laser welding to weld the corresponding cross-shaped groove 101, first radiation unit 2 and second radiation unit 3 together, and complete the assembly, as shown in Figures 1 to 3 .

[0054] The utility model can realize the batch installation and positioning of the radiation units, and greatly simplifies the assembly process of the dual-polarized printed umbrella-shaped dipole array antenna.

[0055] The above disclosure is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can easily think of changes or modifications within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model.

Claims

1. A dual-polarized printed umbrella dipole array antenna, characterized in that, The array antenna comprises a reflecting plate, a plurality of umbrella-shaped dipole antenna units and a feed network PCB, a plurality of cross-shaped slots are arranged on the reflecting plate, each cross-shaped slot corresponds to an umbrella-shaped dipole antenna unit; each umbrella-shaped dipole antenna unit comprises a first radiation unit and a second radiation unit, the first radiation unit is inserted into the second radiation unit, and the first radiation unit and the second radiation unit are orthogonal and occluded; the first radiation unit and the second radiation unit are inserted into the corresponding cross-shaped slot; the second radiation unit of each umbrella-shaped dipole antenna unit is designed in an integrated manner with the feed network PCB.

2. The dual-polarized printed umbrella dipole array antenna according to claim 1, wherein, The first radiation unit comprises a first substrate and a second substrate arranged in a stack, and first vibrator arms arranged on both sides of the upper part of the first substrate and the second substrate; a first slot is arranged at the lower part of the middle position of the first radiation unit, a first window is arranged at the bottom side of the first slot, a first microstrip feed line is arranged at the first window, and the first microstrip feed line is connected with a first strip-shaped feed line, and the first strip-shaped feed line is located between the first substrate and the second substrate; a first gap is arranged at the side of the first window close to the first slot; The second radiation unit comprises a third substrate and a fourth substrate arranged in a stack, and second vibrator arms arranged on both sides of the upper part of the third substrate and the fourth substrate; a second slot is arranged at the upper part of the middle position of the second radiation unit, and a second strip-shaped feed line is arranged between the third substrate and the fourth substrate; The feed network PCB comprises a fifth substrate and a sixth substrate arranged in a stack, and a first feed network and a second feed network arranged between the fifth substrate and the sixth substrate, the fifth substrate is designed in an integrated manner with each third substrate, and the sixth substrate is designed in an integrated manner with each fourth substrate; The first feed network is used for feeding each first radiation unit, and the second feed network is designed in an integrated manner with each second strip-shaped feed line and is used for feeding each second radiation unit; A plurality of second windows are arranged at the side of the fifth substrate and the sixth substrate close to the second radiation unit, a second microstrip feed line is arranged at each second window, and the second microstrip feed line is connected with the first feed network; a second gap is arranged at the side of each second window; the number of the second windows matches the number of the umbrella-shaped dipole antenna units; When the first radiation unit is inserted into the second radiation unit, the second microstrip feed line is in contact with the first microstrip feed line, and the second substrate corresponding to the first window is inserted into the second gap; the sixth substrate corresponding to the second window is inserted into the first gap.

3. The dual-polarized printed umbrella dipole array antenna according to claim 2, wherein, The first microstrip feed line is obtained by removing the upper layer medium of the part of the first strip-shaped feed line exposed to the first window; the second microstrip feed line is obtained by removing the upper layer medium of the part of the third strip-shaped feed line exposed to the second window, and the first feed network comprises the third strip-shaped feed line.

4. The dual-polarized printed umbrella dipole array antenna according to claim 2, wherein, The width of the first slot is equal to the sum of the thicknesses of the third substrate and the fourth substrate, and the depth of the first slot is equal to the height of the third substrate or the fourth substrate below the second slot. The width of the second slot is equal to the sum of the thicknesses of the first substrate and the second substrate, and the depth of the second slot is equal to the height of the first substrate or the second substrate above the first slot.

5. The dual-polarized printed umbrella dipole array antenna according to claim 2, wherein, The width of the first gap is equal to the thickness of the sixth substrate, and the width of the second gap is equal to the thickness of the second substrate.

6. The dual polarized printed umbrella dipole array antenna according to any one of claims 2-5, wherein, The first feeding network and the second feeding network are both power division networks, and the two power division networks are arranged back to back.

7. The dual-polarized printed umbrella dipole array antenna according to claim 6, wherein, The first stage of the power division network adopts a Wilkinson power divider, and the other stages adopt T-type power dividers.

8. The dual-polarized printed umbrella dipole array antenna according to claim 1, wherein, The width and length of the cross-shaped slot are consistent with the width and length of the corresponding first radiation unit and second radiation unit at the corresponding positions.

9. The dual-polarized printed umbrella dipole array antenna according to claim 1, wherein, The plurality of cross-shaped slots on the reflecting plate are arranged in a linear array, and the reflecting plate is a PCB plate.

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