CN210404060U - Broadband circularly polarized common-caliber antenna - Google Patents
Broadband circularly polarized common-caliber antenna Download PDFInfo
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- CN210404060U CN210404060U CN201921262768.0U CN201921262768U CN210404060U CN 210404060 U CN210404060 U CN 210404060U CN 201921262768 U CN201921262768 U CN 201921262768U CN 210404060 U CN210404060 U CN 210404060U
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Abstract
The utility model provides a broadband circular polarization common-caliber antenna, which comprises an external antenna (100) and an internal antenna (200), wherein the external antenna (100) comprises an external dielectric substrate (111), an external phase radiator (112) and an external feed balun (113); the built-in antenna (200) comprises a built-in dielectric substrate (211), a built-in phase radiator (212) and a built-in feed balun (213); the internal antenna (200) is arranged inside the external antenna (100) in a clearance mode, and both the external antenna (100) and the internal antenna (200) are circularly polarized antennas. The utility model discloses simple structure, easily processing, low cost to have broad impedance bandwidth, axial ratio bandwidth and gain bandwidth, its far zone radiation pattern is comparatively stable in public bandwidth, consequently applicable in the mobile communication system of broadband.
Description
Technical Field
The utility model relates to the field of communication technology, specifically, relate to a broadband circular polarization is bore antenna altogether.
Background
With the rapid development of mobile communication, the circularly polarized common-aperture antenna receives more and more attention due to its good polarization matching characteristics and effective aperture utilization. Meanwhile, as mobile communication devices are increasingly miniaturized in size, antennas must meet specific use requirements as components for radiating and receiving electromagnetic waves. The broadband and miniaturization of the antenna are receiving more and more attention from the antenna engineer.
The common-caliber antenna in the existing design is often limited by the working bandwidth, and has the defects of complex structure, difficulty in processing, high cost and the like.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a broadband circular polarization is bore antenna altogether.
According to the utility model, the broadband circular polarization common caliber antenna comprises an external antenna 100 and an internal antenna 200,
the external antenna 100 is a cuboid surrounded by four external cuboid plates S1;
the external rectangular parallelepiped plate S1 includes an external dielectric substrate 111, an external phase radiator 112, and an external feeding balun 113;
the external phase radiator 112 is arranged outside the external dielectric substrate 111;
the external feeding balun 113 is arranged on the inner side of the external dielectric substrate 111;
the internal antenna 200 is a rectangular parallelepiped surrounded by four internal rectangular parallelepiped plates S2;
the built-in rectangular parallelepiped plate S2 includes a built-in dielectric substrate 211, a built-in phase radiator 212, and a built-in power feeding balun 213;
the built-in phase radiator 212 is arranged on the outer side of the built-in dielectric substrate 211;
the internal feeding balun 213 is disposed inside the internal dielectric substrate 211;
the internal antenna 200 is arranged inside the external antenna 100 with a gap;
the external antenna 100 and the internal antenna 200 are both circularly polarized antennas.
Preferably, the external antenna 100 is integrated on an antenna aperture by using a plurality of circularly polarized antennas operating in different frequency bands.
Preferably, the internal antenna 200 is integrated on an antenna aperture by using a plurality of circularly polarized antennas operating in different frequency bands.
Preferably, the external antenna 100 comprises 4 identical external Vivaldi antennas 110.
Preferably, the internal antenna 200 includes 4 identical internal Vivaldi antennas 210.
Preferably, the four external rectangular parallelepiped plates S1 have respective gap distances c, d, e, and f from the four internal rectangular parallelepiped plates S2, where c is d;
the length of the inner side surface of the external rectangular plate S1 is a, and the width thereof is b;
the length of the inner side surface of the internal rectangular plate S2 is m, and the width thereof is n;
a>m，b＝n。
preferably, the SMA coaxial adapter (300) is also included;
the lower edge of the external phase radiator 112 is connected with an outer conductor of the SMA coaxial adapter connector (300);
the external feed balun 113 is connected with an inner core of the SMA coaxial adapter (300);
the lower edge of the built-in phase radiator 212 is connected with an outer conductor of the SMA coaxial adapter connector (300);
the internal feed balun 213 is connected with an inner core of the SMA coaxial adapter (300).
According to the utility model, the broadband circular polarization common caliber antenna comprises an external antenna 100 and an internal antenna 200,
the external antenna 100 is a cuboid surrounded by four external cuboid plates S1;
the external rectangular parallelepiped plate S1 includes an external dielectric substrate 111, an external phase radiator 112, and an external feeding balun 113;
the external phase radiator 112 is arranged outside the external dielectric substrate 111;
the external feeding balun 113 is arranged on the inner side of the external dielectric substrate 111;
the internal antenna 200 is a rectangular parallelepiped surrounded by four internal rectangular parallelepiped plates S2;
the built-in rectangular parallelepiped plate S2 includes a built-in dielectric substrate 211, a built-in phase radiator 212, and a built-in power feeding balun 213;
the built-in phase radiator 212 is arranged on the outer side of the built-in dielectric substrate 211;
the internal feeding balun 213 is disposed inside the internal dielectric substrate 211;
the internal antenna 200 is arranged inside the external antenna 100 with a gap;
the external antenna 100 and the internal antenna 200 are both circularly polarized antennas;
the external antenna 100 adopts a plurality of circularly polarized antennas working in different frequency bands to be integrated on one antenna aperture;
the built-in antenna 200 adopts a plurality of circularly polarized antennas working at different frequency bands to be integrated on one antenna aperture;
the external antenna 100 includes 4 identical external Vivaldi antennas 110;
the internal antenna 200 includes 4 identical internal Vivaldi antennas 210;
the four external rectangular parallelepiped plates S1 have respective gap distances c, d, e, and f from the four internal rectangular parallelepiped plates S2, where c is d, e is f;
the length of the inner side surface of the external rectangular plate S1 is a, and the width thereof is b;
the length of the inner side surface of the internal rectangular plate S2 is m, and the width thereof is n;
a>m，b＝n；
further comprising an SMA coaxial adapter (300);
the lower edge of the external phase radiator 112 is connected with an outer conductor of the SMA coaxial adapter connector (300);
the external feed balun 113 is connected with an inner core of the SMA coaxial adapter (300);
the lower edge of the built-in phase radiator 212 is connected with an outer conductor of the SMA coaxial adapter connector (300);
the internal feed balun 213 is connected with an inner core of the SMA coaxial adapter (300).
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the broadband circular polarization common-caliber antenna adopts the Vivaldi antenna, so that a wider working bandwidth is obtained. The Vivaldi antennas are connected end to end, and are weighted and assigned according to a certain phase difference, so that a stable circularly polarized directional radiation pattern is obtained in the impedance bandwidth.
2. The broadband circularly polarized common-aperture antenna integrates a plurality of circularly polarized antennas working at different frequency bands on one antenna aperture, effectively utilizes the platform space and realizes the resource sharing of the whole platform.
3. The broadband circularly polarized common-caliber antenna has the advantages of simple structure, easiness in processing, small size, light weight, low cost and the like.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of the external antenna 100;
fig. 3 is a schematic structural diagram of the internal antenna 200;
fig. 4 is a schematic structural view of an external rectangular parallelepiped plate S1;
fig. 5 is a schematic structural view of the built-in rectangular parallelepiped plate S2;
FIG. 6 is a top view of a preferred embodiment of the present invention;
fig. 7 is a schematic inner side dimension view of the external rectangular parallelepiped plate S1;
fig. 8 is a schematic inner side surface dimension view of the built-in rectangular parallelepiped plate S2;
fig. 9 is an S parameter diagram of the external antenna 100;
fig. 10 is an S parameter diagram of the internal antenna 200;
fig. 11 is an axial ratio of the external antenna 100;
fig. 12 is an axial ratio of the internal antenna 200;
fig. 13 shows the gain of the external antenna 100;
fig. 14 shows the gain of the internal antenna 200;
FIG. 15 is the XOZ plane directional diagram of the external antenna at 3 GHz;
FIG. 16 is the XOZ plane directional diagram of the internal antenna at 11 GHz;
fig. 17 is a schematic structural diagram of an SMA coaxial adapter (300).
The figures show that:
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
According to the utility model, as shown in fig. 1, the broadband circular polarization common-caliber antenna comprises an external antenna 100 and an internal antenna 200, wherein the external antenna 100 is a cuboid surrounded by four external cuboid plates S1; as shown in fig. 2 and 4, the external rectangular parallelepiped plate S1 includes an external dielectric substrate 111, an external phase radiator 112, and an external feeding balun 113, where the external phase radiator 112 is disposed on the outer side of the external dielectric substrate 111, and the external feeding balun 113 is disposed on the inner side of the external dielectric substrate 111; in a preferred embodiment, the external phase radiator 112 is printed on the outer side of the external dielectric substrate 111, and the external feeding balun 113 is printed on the inner side of the external dielectric substrate 111.
Specifically, the broadband circularly polarized common-aperture antenna further comprises an SMA coaxial adapter (300), wherein the lower edge of the external phase radiator 112 is connected with the outer conductor of the SMA coaxial adapter (300), the external feeding balun 113 is connected with the inner core of the SMA coaxial adapter (300), the lower edge of the internal phase radiator 212 is connected with the outer conductor of the SMA coaxial adapter (300), the internal feeding balun 213 is connected with the inner core of the SMA coaxial adapter (300), in a preferred embodiment, as shown in fig. 17, the SMA coaxial adapter (300) comprises an external thread main body 310, an insulator 320 and an internal pin core 330, wherein the external thread main body 310 is a tubular outer conductor, the internal pin core 330 is installed inside the external thread main body 310, the insulator 320 is installed between the internal pin core 330 and the external thread main body 310, and the lower edge of the external phase radiator 112 is connected with the external thread main body 310 of the SMA coaxial adapter (300), the external feed balun 113 is connected with a contact pin inner core 330 of the SMA coaxial adapter (300); the lower edge of the built-in phase radiator 212 is connected with an external thread main body 310 of another SMA coaxial adapter connector (300), and the built-in feed balun 213 is connected with a pin inner core 330 of the SMA coaxial adapter connector (300).
The internal antenna 200 is a rectangular parallelepiped surrounded by four internal rectangular parallelepiped plates S2, and as shown in fig. 3 and 5, the internal rectangular parallelepiped plate S2 includes an internal dielectric substrate 211, an internal phase radiator 212, and an internal feeding balun 213, the internal phase radiator 212 is disposed outside the internal dielectric substrate 211, and the internal feeding balun 213 is disposed inside the internal dielectric substrate 211; in a preferred embodiment, the built-in phase radiator 212 is printed on the outer side of the built-in dielectric substrate 211, and the built-in power feeding balun 213 is printed on the inner side of the built-in dielectric substrate 211.
As shown in fig. 1, the internal antenna 200 is disposed inside the external antenna 100 with a gap, and in a preferred example, as shown in fig. 6, 7, and 8, the gap distances between the four external rectangular parallelepiped plates S1 and the four internal rectangular parallelepiped plates S2 are c, d, e, and f, respectively, c — d — e — f, the length of the inner surface of the external rectangular parallelepiped plate S1 is a, the width thereof is b, the length of the inner surface of the internal rectangular parallelepiped plate S2 is m, the width thereof is n, a > m, and b is n. In one modification, the inner side surface of the built-in rectangular solid plate S2 has a length of m and a width of n, a > m, b > n.
The external antenna 100 and the internal antenna 200 are both circular polarized antennas, the antennas work at 2-4GHz and 9-11GHz, the external antenna 100 adopts a plurality of circular polarized antennas working at different frequency bands to be integrated on one antenna aperture, the internal antenna 200 adopts a plurality of circular polarized antennas working at different frequency bands to be integrated on one antenna aperture, as shown in fig. 9 and 10, S parameter diagrams of the external antenna 100 and S parameter diagrams of the internal antenna 200 are respectively shown, and by integrating a plurality of circular polarized antennas working at different frequency bands on one antenna aperture, the platform space is effectively utilized, and resource sharing of the whole platform is realized.
The external antenna 100 includes 4 identical external Vivaldi antennas 110, the internal antenna 200 includes 4 identical internal Vivaldi antennas 210, as shown in fig. 11 and 12, it can be seen from the figures that the axial ratio of the external antenna 100 and the axial ratio of the internal antenna 200 are both less than 3dB, so that a wider impedance bandwidth is obtained, and the adjacent Vivaldi antennas are sequentially weighted according to equal phase differences, so that a circularly polarized directional pattern of directional radiation can be obtained, as shown in fig. 15 and 16, fig. 15 is a pattern of an XOZ plane of the external antenna at 3GHz, and fig. 16 is a pattern of an XOZ plane of the internal antenna at 11 GHz; as shown in fig. 13, the gain of the external antenna 100 is shown, and fig. 14 is the gain of the internal antenna 200, the present invention has a simple structure, is easy to process, and has a low cost, and as can be seen from fig. 11, fig. 12, fig. 13, fig. 14, fig. 15, and fig. 16, the present invention has a wide impedance bandwidth, an axial ratio bandwidth, and a gain bandwidth, and a far-range radiation pattern thereof is stable in a common bandwidth, and thus, the present invention is applicable to a broadband mobile communication system.
The invention provides a broadband circularly polarized common-caliber antenna, which works at 2-4GHz and 9-11GHz and can be used in a mobile communication system, wherein Vivaldi antennas are adopted to obtain a wider impedance bandwidth, four adjacent Vivaldi antennas are connected end to end, and the adjacent antennas are sequentially weighted in equal phase difference amplitude, so that a circularly polarized antenna with good circularly polarized radiation pattern characteristics is obtained. And a plurality of circularly polarized antennas working at different frequency bands are integrated on one antenna aperture, so that the platform space can be fully utilized, and the resource sharing of the whole platform is realized. Therefore, the broadband circularly polarized common-caliber antenna can be well applied to a mobile communication system.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but 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 application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (8)
1. The broadband circularly polarized common-aperture antenna is characterized by comprising an external antenna (100) and an internal antenna (200);
the external antenna (100) is a cuboid surrounded by four external cuboid plates (S1);
the external rectangular solid plate (S1) comprises an external dielectric substrate (111), an external phase radiator (112) and an external feeding balun (113);
the external phase radiator (112) is arranged on the outer side of the external dielectric substrate (111);
the external feeding balun (113) is arranged on the inner side of the external dielectric substrate (111);
the built-in antenna (200) is a cuboid surrounded by four built-in cuboid plates (S2);
the built-in rectangular parallelepiped plate (S2) includes a built-in dielectric substrate (211), a built-in phase radiator (212), and a built-in power feeding balun (213);
the built-in phase radiator (212) is arranged on the outer side of the built-in dielectric substrate (211);
the built-in power feeding balun (213) is arranged on the inner side of the built-in dielectric substrate (211);
the internal antenna (200) is arranged inside the external antenna (100) in a clearance mode;
the external antenna (100) and the internal antenna (200) are circularly polarized antennas.
2. The broadband circularly polarized common aperture antenna according to claim 1, wherein the external antenna (100) is integrated on one antenna aperture by using a plurality of circularly polarized antennas operating in different frequency bands.
3. The broadband circularly polarized common aperture antenna according to claim 2, wherein the internal antenna (200) is integrated on one antenna aperture by using a plurality of circularly polarized antennas operating in different frequency bands.
4. The broadband circularly polarized common aperture antenna according to claim 2, wherein the external antenna (100) comprises 4 identical external Vivaldi antennas (110).
5. The broadband circularly polarized common aperture antenna according to claim 1, wherein the built-in antenna (200) comprises 4 identical built-in Vivaldi antennas (210).
6. The broadband circularly polarized common aperture antenna according to claim 1, wherein the four external rectangular parallelepiped plates (S1) and the four internal rectangular parallelepiped plates (S2) have respective gap distances of c, d, e, and f, where c is d, e, and f;
the length of the inner side surface of the external rectangular plate (S1) is a, and the width of the inner side surface of the external rectangular plate is b;
the length of the inner side surface of the internal rectangular plate (S2) is m, and the width is n;
a>m，b＝n。
7. the broadband circularly polarized common aperture antenna according to claim 5, further comprising an SMA coaxial adapter (300);
the lower edge of the external phase radiator (112) is connected with an outer conductor of the SMA coaxial adapter connector (300);
the external feed balun (113) is connected with an inner core of the SMA coaxial adapter (300);
the lower edge of the built-in phase radiator (212) is connected with an outer conductor of the SMA coaxial adapter connector (300);
the internal feed balun (213) is connected with an inner core of the SMA coaxial adapter (300).
8. A broadband circularly polarized common-aperture antenna is characterized by comprising an external antenna (100) and an internal antenna (200),
the external antenna (100) is a cuboid surrounded by four external cuboid plates (S1);
the external rectangular solid plate (S1) comprises an external dielectric substrate (111), an external phase radiator (112) and an external feeding balun (113);
the external phase radiator (112) is arranged on the outer side of the external dielectric substrate (111);
the external feeding balun (113) is arranged on the inner side of the external dielectric substrate (111);
the built-in antenna (200) is a cuboid surrounded by four built-in cuboid plates (S2);
the built-in rectangular parallelepiped plate (S2) includes a built-in dielectric substrate (211), a built-in phase radiator (212), and a built-in power feeding balun (213);
the built-in phase radiator (212) is arranged on the outer side of the built-in dielectric substrate (211);
the built-in power feeding balun (213) is arranged on the inner side of the built-in dielectric substrate (211);
the internal antenna (200) is arranged inside the external antenna (100) in a clearance mode;
the external antenna (100) and the internal antenna (200) are circularly polarized antennas;
the external antenna (100) is integrated on an antenna aperture by adopting a plurality of circularly polarized antennas working at different frequency bands;
the built-in antenna (200) adopts a plurality of circularly polarized antennas working at different frequency bands to be integrated on an antenna aperture;
the external antenna (100) comprises 4 identical external Vivaldi antennas (110);
the built-in antenna (200) comprises 4 identical built-in Vivaldi antennas (210);
the gap distances between the four external rectangular parallelepiped plates (S1) and the four internal rectangular parallelepiped plates (S2) are c, d, e, and f, respectively, where c is d, e is f;
the length of the inner side surface of the external rectangular plate (S1) is a, and the width of the inner side surface of the external rectangular plate is b;
the length of the inner side surface of the internal rectangular plate (S2) is m, and the width is n;
a>m，b＝n；
further comprising an SMA coaxial adapter (300);
the lower edge of the external phase radiator (112) is connected with an outer conductor of the SMA coaxial adapter connector (300);
the external feed balun (113) is connected with an inner core of the SMA coaxial adapter (300);
the lower edge of the built-in phase radiator (212) is connected with an outer conductor of the SMA coaxial adapter connector (300);
the internal feed balun (213) is connected with an inner core of the SMA coaxial adapter (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921262768.0U CN210404060U (en) | 2019-08-06 | 2019-08-06 | Broadband circularly polarized common-caliber antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921262768.0U CN210404060U (en) | 2019-08-06 | 2019-08-06 | Broadband circularly polarized common-caliber antenna |
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| Publication Number | Publication Date |
|---|---|
| CN210404060U true CN210404060U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921262768.0U Active CN210404060U (en) | 2019-08-06 | 2019-08-06 | Broadband circularly polarized common-caliber antenna |
Country Status (1)
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| CN (1) | CN210404060U (en) |
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