CN214477891U - Horizontal polarization omnidirectional antenna - Google Patents
Horizontal polarization omnidirectional antenna Download PDFInfo
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- CN214477891U CN214477891U CN202023328585.XU CN202023328585U CN214477891U CN 214477891 U CN214477891 U CN 214477891U CN 202023328585 U CN202023328585 U CN 202023328585U CN 214477891 U CN214477891 U CN 214477891U
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Abstract
The utility model discloses a horizontal polarization omnidirectional antenna, include: the antenna comprises a dielectric substrate, a feed network, a plurality of radiating units and a metal ground; the radiating unit comprises a first oscillator arm and a second oscillator arm, the first oscillator arm is arranged on the front surface of the dielectric substrate, and the second oscillator arm is arranged on the back surface of the dielectric substrate; the feed network is arranged on the front surface of the dielectric substrate, and the tail end of the first oscillator arm is connected with the output end of the feed network; the tail end of the second vibrator arm is connected with a metal ground; the input end of the feed network is provided with a signal input end; every two radiating elements are arranged around the dielectric substrate at equal intervals. The embodiment of the utility model provides a front and the back at the medium base plate are provided with first oscillator arm and second oscillator arm respectively, and per two radiating element around medium base plate equidistant range for the signal can be to 360 directions of horizontal plane uniform radiation, has improved the radiant efficiency and the coverage efficiency of signal.
Description
Technical Field
The utility model belongs to the technical field of the antenna technique and specifically relates to a horizontal polarization omnidirectional antenna is related to.
Background
In large buildings, due to the fact that the number of partition walls is large, outdoor mobile communication signals cannot deeply cover the indoor space (such as underground parking lots), and therefore an indoor distribution system needs to be built. With the development of 5G technology, indoor signal coverage is important, and indoor is an important application scene of 5G, the indoor service percentage is higher and higher, according to relevant statistics, 70% of services in 4G era occur indoors, and more than 85% of applications in 5G occur indoors. However, the frequency range of the horizontal polarization unit of the horizontal polarization omnidirectional antenna of the existing indoor distribution system is narrow, and the horizontal polarization omnidirectional antenna cannot cover more signal ranges, so that the coverage effect of indoor signals is poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a horizontal polarization omnidirectional antenna to solve prior art and can't cover more signal ranges, lead to the relatively poor technical problem of the coverage effect of indoor signal.
A first embodiment of the utility model provides a horizontal polarization omnidirectional antenna, include:
the antenna comprises a dielectric substrate, a feed network, a plurality of radiating units and a metal ground;
the radiating unit comprises a first oscillator arm and a second oscillator arm, the first oscillator arm is arranged on the front surface of the dielectric substrate, and the second oscillator arm is arranged on the back surface of the dielectric substrate;
the feed network is arranged on the front surface of the dielectric substrate, and the tail end of the first oscillator arm is connected with the output end of the feed network; the end of the second vibrator arm is connected with the metal ground; the input end of the feed network is provided with a signal input end;
every two radiation units are arranged around the medium substrate at equal intervals.
Further, the projection of the first vibrator arm and the second vibrator arm on the medium substrate is an axisymmetric pattern.
Furthermore, the omnidirectional antenna further comprises a first arc-shaped gradual change structure and a second arc-shaped gradual change structure, and the tail end of the first oscillator arm is connected with one end of the feed network through the first arc-shaped gradual change structure; the tail end of the second oscillator arm is connected with the metal ground through the second arc-shaped gradual change structure.
Further, the power distribution network includes a power divider component, and the power divider component includes at least one of a one-to-two microstrip power divider, a one-to-three microstrip power divider, and a one-to-four microstrip power divider.
Further, the dielectric substrate is a circular ring-shaped dielectric substrate.
Furthermore, the number of the radiation units is 5, and the 5 radiation units are arranged at equal intervals along the circumferential direction of the circular dielectric substrate.
The embodiment of the utility model provides a horizontal polarization omnidirectional antenna, be provided with first oscillator arm and second oscillator arm respectively at the front and the back of medium base plate, the bandwidth of radiating element can effectively be expanded to first oscillator arm and the second oscillator arm of symmetry setting to be favorable to improving the signal coverage efficiency of antenna; every two radiation units are arranged around the dielectric substrate at equal intervals, so that signals can be uniformly radiated in the direction of 360 degrees on the horizontal plane, and the radiation efficiency and the coverage efficiency of the signals are effectively improved.
Drawings
Fig. 1 is a schematic front structural diagram of a horizontally polarized omnidirectional antenna according to an embodiment of the present invention;
fig. 2 is a schematic back structural diagram of a horizontally polarized omnidirectional antenna according to an embodiment of the present invention;
fig. 3 is a VSWR graph of a radiation unit standing wave ratio of a horizontally polarized omnidirectional antenna according to an embodiment of the present invention;
fig. 4 is a VSWR graph of a horizontally polarized omnidirectional antenna according to an embodiment of the present invention;
fig. 5 is a horizontal plane directional diagram of a frequency point of 1.7GHz, where f is the frequency point of the horizontally polarized omnidirectional antenna provided by the embodiment of the present invention;
fig. 6 is a horizontal plane directional diagram of a frequency point of 2.7GHz, where f is the frequency point of the horizontally polarized omnidirectional antenna provided by the embodiment of the present invention;
fig. 7 is a horizontal plane pattern diagram of the frequency point of 3.8GHz, where f is the frequency point of the horizontally polarized omnidirectional antenna provided by the embodiment of the present invention.
Wherein the drawings in the attached drawings of the specification are marked as follows:
1. a dielectric substrate; 2. a feed network; 31. a first vibrator arm; 32. a second vibrator arm; 4. a metal ground; 5. a signal input terminal.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1-7, a first embodiment of the present invention provides a horizontally polarized omnidirectional antenna shown in fig. 1-2, including:
the antenna comprises a dielectric substrate 1, a feed network 2, a plurality of radiating elements and a metal ground 4; the radiation unit comprises a first vibrator arm 31 and a second vibrator arm 32, wherein the first vibrator arm 31 is arranged on the front surface of the medium substrate 1, and the second vibrator arm 32 is arranged on the back surface of the medium substrate 1; the feed network 2 is arranged on the front surface of the dielectric substrate 1, and the tail end of the first oscillator arm 31 is connected with the output end of the feed network 2; the end of the second vibrator arm 32 is connected to the metal ground 4; the input end of the feed network 2 is provided with a signal input end 5, a coaxial feed line is arranged at the signal input end 5, an inner conductor of the coaxial feed line penetrates through the dielectric substrate 1 to be connected with the input end of the feed network 2, an outer conductor of the coaxial feed line is connected with a metal ground 4, and the impedance of the coaxial feed line is preferably 50 ohms.
In the embodiment of the present invention, the materials of the feeding network 2, the radiating element and the metal ground 4 are good metal conductor materials, and are disposed on the dielectric substrate 1 through the PCB printing process. In one embodiment, the dielectric substrate 1 has a circular ring shape with a radius of 80-100mm, and a hole with a radius of 10-15mm is formed in the center thereof to reduce the weight of the antenna itself, wherein the material of the dielectric substrate 1 includes, but is not limited to, at least one of an epoxy plate and a teflon high frequency plate. The embodiment of the present invention provides a length and a width of the first vibrator arm 31 and the second vibrator arm 32 are 0.28-0.32 x λ, and λ is a central frequency wavelength.
The embodiment of the utility model provides a be provided with first oscillator arm 31 and second oscillator arm 32 respectively at the front and the back of dielectric substrate 1, the first oscillator arm 31 and the second oscillator arm 32 of symmetry setting can effectively expand the bandwidth of radiating element to be favorable to improving the signal coverage efficiency of antenna; every two radiating element are around medium base plate 1 equidistant range, the embodiment of the utility model provides an in a plurality of radiating element around medium base plate 1 equidistant range for the signal can be to 360 directions of horizontal plane uniform radiation, improved the radiant efficiency and the coverage efficiency of signal.
As a specific implementation manner of the embodiment of the present invention, the projections of the first vibrator arm 31 and the second vibrator arm 32 on the dielectric substrate 1 are axisymmetric patterns.
As a specific implementation manner of the embodiment of the present invention, the omnidirectional antenna further includes a first arc-shaped gradual change structure and a second arc-shaped gradual change structure, and the end of the first oscillator arm 31 is connected to one end of the feed network 2 through the first arc-shaped gradual change structure; the end of the second vibrator arm 32 is connected to the metal ground 4 through a second arc-shaped transition structure.
The embodiment of the utility model provides an in, be connected oscillator arm and feed network 2 through arc gradual change structure, can effectively reduce the influence of impedance sudden change for the frequency channel widen of antenna, thereby can effectively improve antenna signal's coverage. Referring to fig. 3, in detail, the standing-wave ratio of the radiation unit of the omnidirectional antenna according to the embodiment of the present invention is less than 1.5 at 1700 + 3800 MHz. Referring to fig. 4, it can be seen that the voltage standing wave ratio of the omnidirectional antenna within the frequency band of 1700-3800MHz is less than 2.2, and the radiation unit is connected to the feed network 2 to improve the overall antenna performance; referring to fig. 5, it can be seen that the out-of-roundness of the omni-directional antenna at the frequency point f equal to 1.7GHz is less than 1 dB; referring to fig. 6, it can be seen that the out-of-roundness of the omni-directional antenna at the frequency point f of 2.7GHz is less than 4.8 dB; referring to fig. 7, it can be seen that the out-of-roundness of the omni-directional antenna at the frequency point f equal to 3.8GHz is less than 3.8 dB. As can be seen from fig. 4-7, the omnidirectional antenna of the embodiment of the present invention has better out-of-roundness.
As a specific implementation of the embodiment of the present invention, the feeding network 2 includes a power divider component, and the power divider component includes one minute two microstrip power dividers, one minute three microstrip power dividers and one minute four microstrip power dividers.
In the embodiment of the present invention, the signal is fed through the signal input terminal 5, and the input signal is equally distributed to each radiating element through the plurality of power dividers in the feeding network 2. The utility model discloses feed network 2 divides the ware one-level one minute three microstrip merit by two one minute two microstrip merits and divides the ware to constitute. It should be noted that the length of each section of the microstrip antenna in the feed network 2 is 0.2-0.3 x λ, λ is a central frequency wavelength, the width of the microstrip antenna is about 0.5-4 mm, and the microstrip antenna in the feed network 2 is in an arc-shaped section structure, so that the wiring space inside the antenna can be effectively saved.
As a specific implementation manner of the embodiment of the utility model, dielectric substrate 1 is ring shape dielectric substrate 1, and the thickness of circular dielectric substrate 1 is 1mm, and the radius is less than 100mm, makes the antenna have planarization and low section's advantage. The number of the radiation units is 5, and the 5 radiation units are arranged at equal intervals along the circumferential direction of the circular dielectric substrate 1.
The radiation units are arranged along the circumferential direction of the circular dielectric substrate 1 at equal intervals, so that signals can be uniformly radiated in the direction of 360 degrees on the horizontal plane, and the radiation rate and the coverage efficiency of the signals are improved. The embodiment of the utility model provides a be provided with 5 radiating element equidistant ranges and become the ring form, be favorable to improving the out-of-roundness index of antenna to can further improve the coverage efficiency of signal.
Implement the embodiment of the utility model provides a, possess following beneficial effect:
the embodiment of the utility model provides a be provided with first oscillator arm 31 and second oscillator arm 32 respectively at the front and the back of dielectric substrate 1, the first oscillator arm 31 and the second oscillator arm 32 of symmetry setting can effectively expand the bandwidth of radiating element to be favorable to improving the signal coverage efficiency of antenna; every two radiating element are around medium base plate 1 equidistant range, the embodiment of the utility model provides an in a plurality of radiating element around medium base plate 1 equidistant range for the signal can be to 360 directions of horizontal plane uniform radiation, improved the radiant efficiency and the coverage efficiency of signal.
Further, the projections of the first oscillator arm 31 and the second oscillator arm 32 on the dielectric substrate 1 are axisymmetric patterns, the tail end of the first oscillator arm 31 is connected with one end of the feed network 2 through the first arc-shaped gradual change structure, and the tail end of the second oscillator arm 32 is connected with the metal ground 4 through the second arc-shaped gradual change structure, so that the influence of impedance sudden change can be effectively reduced, the frequency band of the antenna is widened, and the coverage range of the antenna signal can be further improved. Specifically, the embodiment of the present invention provides a horizontally polarized omnidirectional antenna, which has a wide frequency band of 1700 + 3800MHz and a VSWR <2.2, and can replace the existing indoor branching, thereby meeting the requirement of 2/3/4/5G mobile communication system.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (6)
1. A horizontally polarized omnidirectional antenna, comprising:
the antenna comprises a dielectric substrate, a feed network, a plurality of radiating units and a metal ground;
the radiating unit comprises a first oscillator arm and a second oscillator arm, the first oscillator arm is arranged on the front surface of the dielectric substrate, and the second oscillator arm is arranged on the back surface of the dielectric substrate;
the feed network is arranged on the front surface of the dielectric substrate, and the tail end of the first oscillator arm is connected with the output end of the feed network; the end of the second vibrator arm is connected with the metal ground; the input end of the feed network is provided with a signal input end;
every two radiation units are arranged around the medium substrate at equal intervals.
2. The horizontally polarized omnidirectional antenna of claim 1, wherein the projection of the first dipole arm and the second dipole arm onto the dielectric substrate is in an axisymmetric pattern.
3. The horizontally polarized omnidirectional antenna of claim 1, further comprising a first arcuate tapering structure and a second arcuate tapering structure, wherein a distal end of the first dipole arm is connected to one end of the feed network through the first arcuate tapering structure; the tail end of the second oscillator arm is connected with the metal ground through the second arc-shaped gradual change structure.
4. The horizontally polarized omnidirectional antenna of claim 1, wherein the feed network comprises a power splitter component, the power splitter component comprising at least one of a one-to-two microstrip power splitter, a one-to-three microstrip power splitter, and a one-to-four microstrip power splitter.
5. The horizontally polarized omnidirectional antenna of claim 1, wherein the dielectric substrate is a circular ring-shaped dielectric substrate.
6. The horizontally polarized omnidirectional antenna of claim 5, wherein the number of the radiating elements is 5, and the 5 radiating elements are arranged at equal intervals along the circumference of the circular ring-shaped dielectric substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328585.XU CN214477891U (en) | 2020-12-30 | 2020-12-30 | Horizontal polarization omnidirectional antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328585.XU CN214477891U (en) | 2020-12-30 | 2020-12-30 | Horizontal polarization omnidirectional antenna |
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| CN214477891U true CN214477891U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886222A (en) * | 2020-12-30 | 2021-06-01 | 广州杰赛科技股份有限公司 | Horizontal polarization omnidirectional antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112886222A (en) * | 2020-12-30 | 2021-06-01 | 广州杰赛科技股份有限公司 | Horizontal polarization omnidirectional antenna |
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