CN211295382U - Omnidirectional electrically small antenna - Google Patents
Omnidirectional electrically small antenna Download PDFInfo
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- CN211295382U CN211295382U CN201921840504.9U CN201921840504U CN211295382U CN 211295382 U CN211295382 U CN 211295382U CN 201921840504 U CN201921840504 U CN 201921840504U CN 211295382 U CN211295382 U CN 211295382U
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Abstract
The utility model belongs to the technical field of the antenna, concretely relates to small antenna of qxcomm technology, include: a metal cavity having a cavity surrounded by the housing; the antenna radiator is arranged inside the metal cavity, and the bus is connected with the metal cavity. The utility model discloses a small in size, light in weight can integrate inside the black box, are difficult for receiving outside electromagnetic environment interference, antenna job stabilization, and any one side of black box up can not influence the radiation performance of antenna.
Description
Technical Field
The utility model belongs to the technical field of the antenna, concretely relates to small antenna of qxcomm technology.
Background
With the rapid development of wireless communication technology, various communication technologies have appeared, and in recent years, wireless communication systems have been widely used in various fields, and users can transmit information using wireless communication systems without being limited by distance. An antenna is one of important elements in the field of wireless communication, and is receiving more and more attention. With the development of wireless communication technology and electronic technology, wireless electronic products in daily life have increasingly powerful functions, and have increasingly smaller and thinner sizes and lighter weights. In the whole product design, the space reserved for the antenna and the weight are limited, so the characteristic that the miniaturized antenna is convenient to integrate with the device circuit must be designed.
In the specific prior art, most of the antennas of the marine life-saving system work at a single frequency point, the size is not small enough, and the product radiates on a single surface and is easy to be interfered by the outside. Because the product single face radiates, after the accident happens, the orientation of the radiation face has uncertainty, and the search and rescue efficiency of the marine accident is influenced.
In order to solve the problem, the utility model provides an electrically small antenna of qxcomm technology.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to address at least one of the above problems or disadvantages and to provide at least one advantage which will be described later.
It is yet another object of the present invention to provide an omnidirectional electrically small antenna that greatly improves the performance and reliability of radio beacon positioning.
In order to realize these objects and other advantages of the present invention, the present invention provides an omnidirectional electrically small antenna, further comprising:
a metal cavity having a cavity surrounded by the housing;
at least one set of antenna radiators located inside the metal cavity.
A bus connected with the metal cavity.
The utility model discloses a metal cavity antenna realizes lifesaving antenna's miniaturization and high strength requirement, makes the work frequency point be difficult for receiving external disturbance simultaneously, has improved the stability of antenna work.
Preferably, the at least one antenna radiator group includes a first antenna radiator and a second antenna radiator, the first antenna radiator and the second antenna radiator are connected by a power divider, and the power divider is located between the first antenna radiator and the second antenna radiator.
The utility model discloses a modular work design carries out the figuration to antenna horizontal plane directional diagram, no matter which side of black box is up, does not influence radiation performance, has improved the reliability and the sea accident search and rescue efficiency of antenna work greatly. The feeding is realized by using a network of the power divider, and the effective combination of the two antenna radiators can ensure that one unit can work normally under the condition that the other unit fails.
Preferably, the operating frequency of the omnidirectional electrically small antenna is 243MHz ± 0.7 MHz.
Preferably, the first antenna radiator includes a first vertical radiating plate, a first horizontal radiating plate and a first feeder line, the first vertical radiating plate is located at one end of the metal cavity, the first vertical radiating plate is respectively connected to the first horizontal radiating plate and the ground of the power divider, one end of the first feeder line is connected to one end of the power divider, the other end of the first feeder line is connected to the first horizontal radiating plate, and the first feeder line is parallel to the first vertical radiating plate;
the first vertical radiating plate, the first horizontal radiating plate and the first feeder line form an inverted F-shaped structure.
The first antenna radiator is designed by adopting an inverted-F antenna, and the characteristic that the current path is increased by utilizing the bent radiator of the inverted-F antenna is utilized, so that the size of the antenna is reduced, and the omni-directionality of an antenna directional diagram is ensured.
Preferably, the second antenna radiator includes a second vertical radiating plate, a second horizontal radiating plate and a second feeder line, the second vertical radiating plate is located at the other end of the metal cavity, the second vertical radiating plate is respectively connected to the second horizontal radiating plate and the ground of the power divider, one end of the second feeder line is connected to the other end of the power divider, the other end of the second feeder line is connected to the second horizontal radiating plate, and the second feeder line is parallel to the second vertical radiating plate;
the second vertical radiating plate, the second horizontal radiating plate and the second feeder line form an inverted F-shaped structure.
The second antenna radiator is designed by adopting an inverted-F antenna, so that the size of the antenna is reduced, the omni-directionality of an antenna directional diagram is ensured, and meanwhile, the influence of the surrounding environment on the working frequency point is reduced by placing the antenna in the metal cavity. With the effective combination of first antenna radiator, can integrate inside the black box, be difficult for receiving outside electromagnetic environment interference, antenna job stabilization, any one side of black box up can not influence antenna radiation performance.
Preferably, the bus includes a free end and a connection end, the free end is located outside the metal cavity, and the connection end is connected to the at least one group of antenna radiators through the power divider;
and the joint of the bus and the power divider is positioned in the center of the power divider.
The antenna radiator is wrapped by the metal cavity, and inputs and outputs radio frequency signals to the power divider through the bus, and the power divider divides the input and output radio frequency signals into two signals with equal phase difference of 180 degrees, and the two signals are transmitted into the antenna radiators at two ends. Therefore, as a structure for dividing energy into two parts and combining the two parts into one, the natural bus port is arranged in the middle, and the branch ports are arranged at the two ends.
Preferably, the height of the first feed line is 1.3% of the operating wavelength.
Preferably, the height of the second feed line is 1.3% of the operating wavelength
The heights of the first feeder line and the second feeder line are in order to combine the size of a space of a cavity formed by a metal cavity, so that the performance of the antenna is realized, namely the heights of the first feeder line and the second feeder line are 1.3% of the working wavelength, and the antenna is an optimal choice, can adapt to a small space, and can realize the optimal performance of the antenna.
Preferably, the metal cavity is filled with a foaming agent.
The whole metal cavity is finally fixed by filling foaming agent, so that the requirement of strong impact can be met, and the normal use of the omnidirectional small electric antenna is ensured.
The beneficial effects of the utility model
1. The utility model provides an omnidirectional small electric antenna, the antenna radiator adopted by the omnidirectional small electric antenna is a combined inverted-F antenna with a metal cavity, thereby not only reducing the size of the antenna, ensuring the omnidirectional property of an antenna directional diagram, but also reducing the influence of the surrounding environment on working frequency points;
2. the utility model provides an omnidirectional small electric antenna, the metal cavity antenna provided by the utility model realizes the miniaturization and high strength requirements of the lifesaving antenna, and improves the stability of the antenna;
3. the utility model provides an omnidirectional small electric antenna, its antenna radiator adopts the form of binary array to realize, can guarantee under the condition that a unit became invalid, another unit can normally work, has improved the stability of whole antenna work;
4. the utility model provides a pair of small antenna of qxcomm technology, its size is little, and light in weight can integrate inside the black box, is difficult for receiving outside electromagnetic environment interference, and antenna job stabilization, any one side of black box up can not influence antenna radiation performance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an omnidirectional electrically small antenna according to the present invention;
fig. 2 is a schematic structural diagram of another embodiment of the omnidirectional electrically small antenna according to the present invention;
fig. 3 is a schematic view of the overall structure of the omnidirectional electrically small antenna of the present invention;
the antenna comprises a metal cavity 1, a cavity 2, a bus 3, a first antenna radiator 4, a second antenna radiator 5, a power divider 6, a first vertical radiating plate 7, a first horizontal radiating plate 8, a first feeder line 9, a second vertical radiating plate 10, a second horizontal radiating plate 11, a second feeder line 12, a free end 13 and a connecting end 14.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
In the present specification, when an element is referred to as being "connected to" or "disposed in" another element, it may be "directly connected to" or "directly disposed in" the other element. Or be connected to or disposed in another element with other elements interposed therebetween, unless it is mentioned as being "directly connected to" or "directly disposed in" the other element. Further, it will be understood that when an element is referred to as being "on," "over," "under" or "under" another element, it can be "in direct" contact with the other element or in contact with the other element interposed therebetween, unless it is referred to as being in direct contact with the other element.
To achieve these objects and other advantages in accordance with the purpose of the invention, as embodied and broadly described, as shown in fig. 1, there is provided an omnidirectional electrically small antenna, comprising:
a metal cavity 1 having a cavity 2 surrounded by a housing;
at least one group of antenna radiators positioned inside the metal cavity;
and the bus 3 is connected with the metal cavity 1.
The utility model discloses a metal cavity antenna realizes lifesaving antenna's miniaturization and high strength requirement, makes the work frequency point be difficult for receiving external disturbance simultaneously, has improved antenna job stabilization nature and reliability.
The utility model discloses a metal casing, can improve antenna intensity greatly, make its strong impact back that satisfies 400km/h, the antenna performance still can satisfy the operation requirement, has also improved the uncertain influence that the sea water is undulant and equipment around for the antenna brings simultaneously.
In this embodiment, specifically, the at least one group of antenna radiators includes a first antenna radiator 4 and a second antenna radiator 5, where the first antenna radiator 4 and the second antenna radiator 5 are connected through a power divider 6, and the power divider is located between the first antenna radiator and the second antenna radiator.
The utility model discloses a modular work design carries out the figuration to antenna horizontal plane directional diagram, no matter which side of black box is up, does not influence radiation performance, has improved the reliability and the sea accident search and rescue efficiency of antenna work greatly. The feeding is realized by using a network of the power divider, and the effective combination of the two radiating units can ensure that one unit can work normally under the condition that the other unit fails.
The working frequency of the omnidirectional electrically small antenna is 243MHz +/-0.7 MHz.
On the basis of the above embodiment, specifically, the first antenna radiator includes a first vertical radiating plate 7, a first horizontal radiating plate 8, and a first feeder line 9, the first vertical radiating plate is located at one end of the metal cavity, the first vertical radiating plate is respectively connected to the first horizontal radiating plate and the ground of the power divider, one end of the first feeder line is connected to one end of the power divider, the other end of the first feeder line is connected to the first horizontal radiating plate, and the first feeder line is parallel to the first vertical radiating plate;
the first vertical radiating plate, the first horizontal radiating plate and the first feeder line form an inverted F-shaped structure.
The first antenna radiator is designed by adopting an inverted-F antenna, the current path is increased by utilizing the bent radiator of the inverted-F antenna, and the maximum value of the current intensity is arranged on the vertical radiating plate 7, so that the size of the antenna is reduced, the omni-directionality of an antenna directional diagram is ensured, and the size of the antenna is greatly reduced by combining the bent inverted-F antenna with a metal cavity, so that the height of the antenna, namely the first feeder line is 1.3 percent of the working wavelength.
On the basis of the foregoing embodiment, specifically, the second antenna radiator includes a second vertical radiating plate 10, a second horizontal radiating plate 11, and a second feeder line 12, the second vertical radiating plate is located at the other end of the metal cavity, the second vertical radiating plate is respectively connected to the second horizontal radiating plate and the ground of the power divider, one end of the second feeder line is connected to the other end of the power divider, the other end of the second feeder line is connected to the second horizontal radiating plate, and the second feeder line is parallel to the second vertical radiating plate;
the second vertical radiating plate, the second horizontal radiating plate and the second feeder line form an inverted F-shaped structure.
The center of the power divider is connected with the bus, and the other two input/output ports of the power divider are located at two ends of the power divider and are connected with the first horizontal radiation plate and the second horizontal radiation plate through the first feeder line and the second feeder line, so that radio receiving and transmitting of radio frequency signals are realized.
The design of the second antenna radiator adopts an inverted-F antenna to realize, the current path is increased by utilizing the bent radiator of the inverted-F antenna, the maximum value of the current intensity is shown on the vertical radiating plate 10, the size of the antenna is reduced, the omni-directionality of an antenna directional diagram is ensured, the size of the antenna is greatly reduced by combining the bent inverted-F antenna and a metal cavity, so that the antenna, namely the height of the second feeder is 1.3 percent of the working wavelength, the second antenna radiator is effectively combined with the first antenna radiator, can be integrated in the black box, is not easy to be interfered by the external electromagnetic environment, the work of the antenna is stable, and the radiation performance of the antenna cannot be influenced by the upward direction of any surface of the black box.
The two inverted F monopole omnidirectional antenna array increases the reliability and efficiency of the seawater search and rescue beacon system. When the black box falls into the sea, the face of the black box is not determined to be upward, and according to the conventional beacon antenna, the black box easily faces the sea when only one radiating surface is arranged, and the radiating surface is covered by seawater. And the radiation signal does not radiate because the radiation signal belongs to a semiconductor according to the characteristics of seawater. The utility model discloses a two monopole omnidirectional antenna of falling F can guarantee that even there is a radiating surface to be covered, influenced, and normal work can also be guaranteed to another radiating surface. While the overall volume is also smaller than before.
On the basis of the above embodiment, specifically, the bus includes a free end 13 and a connection end 14, the free end is located outside the metal cavity, and the connection end is connected to the at least one group of antenna radiators through the power divider;
and the joint of the bus and the power divider is positioned in the center of the power divider.
The antenna radiator is wrapped by the metal cavity, and inputs and outputs radio frequency signals to the power divider through the bus, and the power divider divides the input and output radio frequency signals into two signals with equal phase difference of 180 degrees, and the two signals are transmitted into the antenna radiators at two ends. Therefore, as a structure for dividing energy into two parts and combining the two parts into one, the natural bus port is arranged in the middle, and the branch ports are arranged at the two ends.
Specifically, the height of the first feeder line is 1.3% of the operating wavelength, the height of the second feeder line is 1.3% of the operating wavelength, and the heights of the first feeder line and the second feeder line are in order to combine the size of a space where a cavity is formed by a metal cavity, so that good performance is achieved, that is, the heights of the first feeder line and the second feeder line are 1.3% of the operating wavelength, which is an optimal choice, and therefore, the antenna can adapt to a small space and achieve the best performance of the antenna.
Specifically, the metal cavity is filled with the foaming agent, and the whole metal cavity is finally fixed by filling the foaming agent, so that the strong impact requirement can be met, and the normal use of the omnidirectional small electric antenna is ensured.
In another embodiment of the present invention, as shown in fig. 2, the at least one group of antenna radiators includes a first antenna radiator 5 and a second antenna radiator 4, the first antenna radiator 5 and the second antenna radiator 4 are connected by a power divider 6, and the power divider is located between the first antenna radiator 5 and the second antenna radiator 4.
On the basis of the foregoing embodiment, specifically, the first antenna radiator 5 includes a first vertical radiating plate 10, a first horizontal radiating plate 11, and a first feeder line 12, where the first vertical radiating plate is located at one end of the metal cavity, the first vertical radiating plate is respectively connected to the first horizontal radiating plate and the ground of the power divider, one end of the first feeder line is connected to one end of the power divider, the other end of the first feeder line is connected to the first horizontal radiating plate, and the first feeder line is parallel to the first vertical radiating plate;
the first vertical radiating plate, the first horizontal radiating plate and the first feeder line form an inverted F-shaped structure.
The first antenna radiator is designed by adopting an inverted-F antenna, so that the size of the antenna is reduced, and the omni-directionality of an antenna directional diagram is ensured.
On the basis of the foregoing embodiment, specifically, the second antenna radiator 4 includes a second vertical radiating plate 7, a second horizontal radiating plate 8, and a second feeder line 9, where the second vertical radiating plate is located at the other end of the metal cavity, the second vertical radiating plate is respectively connected to the second horizontal radiating plate and the ground of the power divider, one end of the second feeder line is connected to the other end of the power divider, the other end of the second feeder line is connected to the second horizontal radiating plate, and the second feeder line is parallel to the second vertical radiating plate;
the second vertical radiating plate, the second horizontal radiating plate and the second feeder line form an inverted F-shaped structure.
The second antenna radiator is designed by adopting an inverted-F antenna, so that the size of the antenna is reduced, and the omni-directionality of an antenna directional diagram is ensured. With the effective combination of first antenna radiator, can integrate inside the black box, be difficult for receiving outside electromagnetic environment interference, antenna job stabilization, any one side of black box up can not influence antenna radiation performance.
Other components in embodiment 2 are the same as those in embodiment 1, and the description thereof will not be repeated.
The utility model discloses in, during antenna transmission, radio frequency signal passes through bus 3 and gets into in the merit divides ware 6, and the merit divides ware 6 to send signal constant amplitude phase difference 180 degrees to first feeder 9 and second feeder 12, makes two irradiators simultaneous workings. Because the power divider has absorption load and wide designed bandwidth, the other antenna can still work normally when one antenna radiator fails.
The utility model discloses reduce two monopole omnidirectional antennas of falling F to 1.3% of operating wavelength for the first time, combine metal cavity's surrounding moreover, improved antenna strength greatly, make its strong impact back that satisfies 400km/h, the antenna performance still can satisfy the operation requirement, has also improved the uncertain influence that the sea water is undulant and peripheral equipment brought for the antenna simultaneously.
The invention is capable of other alternative embodiments and will not be described in detail herein.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. An omnidirectional electrically small antenna, comprising:
a metal cavity having a cavity surrounded by the housing;
a set of antenna radiators located inside the metal cavity;
a bus connected with the metal cavity;
the group of antenna radiators comprises a first antenna radiator and a second antenna radiator, wherein the first antenna radiator and the second antenna radiator are connected through a power divider, and the power divider is located between the first antenna radiator and the second antenna radiator;
the first antenna radiator is of an inverted-F structure, and the second antenna radiator is of an inverted-F structure.
2. The electrically small omnidirectional antenna according to claim 1, wherein the electrically small omnidirectional antenna has an operating frequency of 243MHz ± 0.7 MHz.
3. The omnidirectional electrically small antenna according to claim 1, wherein the first antenna radiator comprises a first vertical radiating plate, a first horizontal radiating plate, and a first feeder line, the first vertical radiating plate is located at one end of the metal cavity, the first vertical radiating plate is connected to the first horizontal radiating plate and a ground of a power divider, respectively, one end of the first feeder line is connected to one end of the power divider, the other end of the first feeder line is connected to the first horizontal radiating plate, and the first feeder line is disposed parallel to the first vertical radiating plate;
the first vertical radiating plate, the first horizontal radiating plate and the first feeder line form an inverted F-shaped structure.
4. The omnidirectional electrically small antenna according to claim 1, wherein the second antenna radiator comprises a second vertical radiating plate, a second horizontal radiating plate, and a second feeder line, the second vertical radiating plate is located at the other end of the metal cavity, the second vertical radiating plate is connected to the second horizontal radiating plate and a ground of the power divider, respectively, one end of the second feeder line is connected to the other end of the power divider, the other end of the second feeder line is connected to the second horizontal radiating plate, and the second feeder line is disposed in parallel with the second vertical radiating plate;
the second vertical radiating plate, the second horizontal radiating plate and the second feeder line form an inverted F-shaped structure.
5. The omnidirectional electrically small antenna according to claim 1, wherein the bus comprises a free end and a connection end, the free end being located outside the metal cavity, the connection end being connected to the set of antenna radiators through the power splitter;
and the joint of the bus and the power divider is positioned in the center of the power divider.
6. The electrically small omnidirectional antenna according to claim 3, wherein the height of the first feed line is 1.3% of the operating wavelength.
7. The electrically small omnidirectional antenna according to claim 4, wherein the height of said second feed line is 1.3% of the operating wavelength.
8. The electrically small omnidirectional antenna according to any of claims 1 through 7, wherein a foaming agent is filled in the metal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921840504.9U CN211295382U (en) | 2019-10-30 | 2019-10-30 | Omnidirectional electrically small antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921840504.9U CN211295382U (en) | 2019-10-30 | 2019-10-30 | Omnidirectional electrically small antenna |
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| Publication Number | Publication Date |
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| CN211295382U true CN211295382U (en) | 2020-08-18 |
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| CN201921840504.9U Active CN211295382U (en) | 2019-10-30 | 2019-10-30 | Omnidirectional electrically small antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824761A (en) * | 2022-05-16 | 2022-07-29 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
-
2019
- 2019-10-30 CN CN201921840504.9U patent/CN211295382U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114824761A (en) * | 2022-05-16 | 2022-07-29 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
| CN114824761B (en) * | 2022-05-16 | 2024-02-27 | Oppo广东移动通信有限公司 | Antenna device and electronic equipment |
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