CN210607617U - Plane spread spectrum broadband base station antenna - Google Patents
Plane spread spectrum broadband base station antenna Download PDFInfo
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- CN210607617U CN210607617U CN201921822212.2U CN201921822212U CN210607617U CN 210607617 U CN210607617 U CN 210607617U CN 201921822212 U CN201921822212 U CN 201921822212U CN 210607617 U CN210607617 U CN 210607617U
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- base station
- feeder
- station antenna
- antenna
- spread spectrum
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Abstract
The utility model discloses a plane spread spectrum broadband base station antenna, including reflecting plate and antenna radiating element, the top at the reflecting plate is fixed through the support column to the antenna radiating element, the antenna radiating element includes four radiation arms, dielectric substrate and feeder structure, and wherein two radiation arms constitute +45 degrees polarization oscillator, and by first feeder feed, two other radiation arms constitute-45 degrees polarization oscillator, by second feeder feed, four radiation arms are the rhombus paster of printing at dielectric substrate, the rhombus paster is opened there is the right angle type gap. The antenna has the advantages of planar structure, large bandwidth, simple and novel structure and stable radiation pattern.
Description
Technical Field
The utility model relates to a mobile communication field, concretely relates to plane spread spectrum broadband base station antenna.
Background
With the rapid development of mobile communication technology, the development and utilization of new frequency band is particularly important, and the 1427 + 1515MHz frequency band has been applied to IMT (international mobile communication) service in japan, and in europe, 25 european union countries support the 1415 + 1515MHz band for IMT service, and germany and italy have sold the central 1452 + 1442MHz band to IMT service. French, Ireland and Slownia consult the auction 1452-1442MHz for IMT services at the Cellpus regulatory body. At present, there are 2G, 3G, LTE (4G) and 5G systems in China, the 2G system uses 1710-. With the development of mobile communication technology, the requirement of bandwidth is more and more important, different mobile systems occupy different frequency bands, and if the same antenna can cover multiple system frequency bands, the manufacturing cost can be reduced, the space utilization is improved, the economic benefit is increased, and greater value is achieved. Therefore, the newly designed and installed broadband antenna simultaneously covers 1427-1515MHz and 1710-2655MHz and simultaneously supports IMT service and different mobile communication systems, so as to achieve greater economic benefit.
At present, a planar broadband base station antenna can cover the bandwidth of 2G and 3G, LTE (4G) systems, and does not have a planar broadband base station antenna which simultaneously covers the IMT service frequency band. If a pair of antennas can work in a plurality of communication systems, the number of the antennas can be reduced; the plane structure is beneficial to reducing the complexity of the antenna without using a coupling unit, and the miniaturization of the communication equipment is realized.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that prior art exists, the utility model provides a plane spread spectrum broadband base station antenna, the utility model relates to a radiation gain is high, and the broadband base station antenna of the stable plane bandwidth extension of directional diagram, and this broadband base station antenna can realize 64% impedance bandwidth, covers 1390 and 2710 MHz's frequency channel.
The utility model adopts the following technical scheme:
a planar spread spectrum broadband base station antenna comprises a reflecting plate and an antenna radiation unit, wherein the antenna radiation unit is fixed above the reflecting plate through a support column, the antenna radiation unit comprises a first radiation arm, a second radiation arm, a third radiation arm, a fourth radiation arm, a dielectric substrate and a feeder structure, the feeder structure comprises a first feeder and a second feeder, the first radiation arm, the fourth radiation arm and the first feeder are printed on the upper surface of the dielectric substrate, the second radiation arm, the third radiation arm and the second feeder are printed on the lower surface of the dielectric substrate, the first radiation arm and the third radiation arm form a + 45-degree polarized oscillator, the first feeder feeds power, the second radiation arm and the fourth radiation arm form a-45-degree polarized oscillator, and the second feeder feeds power;
the first radiating arm, the second radiating arm, the third radiating arm and the fourth radiating arm are identical in structure and are all diamond patches printed on the dielectric substrate, and right-angle gaps are formed in the diamond patches.
The right-angle type gap is one.
The right-angle slot is positioned at one corner of the rhombic patch, and the opening direction of the right-angle slot faces to the center of the antenna.
The first feeder line and the second feeder line are perpendicular to each other, and a perpendicular intersection point is located at the center point of the dielectric substrate.
The first radiating arm and the third radiating arm are symmetrical about a central point of the dielectric substrate, and the second radiating arm and the fourth radiating arm are symmetrical about the central point of the dielectric substrate.
The support column is an insulating plastic column.
The distance between the reflecting plate and the antenna radiation unit is 0.1 lambdaL-0.5λLWherein λ isLThe central frequency of the broadband base station antenna is 2.1GHz corresponding wavelength in free space.
The utility model discloses still include the coaxial line, the coaxial line is connected with first feeder and second feeder.
The side length of the diamond patch is about one fifth wavelength of the central frequency 2.1GHz of the broadband base station antenna.
The utility model has the advantages that:
(1) the utility model discloses the bandwidth covers 1390-.
(2) The utility model discloses the rhombus paster is opened there is the right angle type gap for the radiation arm has fretwork right angle type structure, effective extension frequency band.
(3) The utility model discloses simple structure, planar structure does not need the coupling unit.
(4) The utility model discloses the irradiator novel structure, the wide bandwidth, the directional diagram is stable, and the gain is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a front sectional view of the present invention;
FIG. 4 is a left side sectional view of the present invention;
fig. 5 shows the impedance bandwidth of the planar spread spectrum wideband base station antenna of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1-4, a planar spread spectrum broadband base station antenna comprises a reflection plate 3 and an antenna radiation unit 1, wherein the antenna radiation unit 1 is fixed above the reflection plate 3 through a support column 4, the distance between the two is 45mm in this embodiment, the support column is an insulating plastic column,
the antenna radiation unit comprises a first radiation arm 5A, a second radiation arm 5B, a third radiation arm 5C, a fourth radiation arm 5D, a dielectric substrate and a feeder structure, wherein the feeder structure comprises a first feeder and a second feeder, the first radiation arm, the fourth radiation arm and the first feeder 6A are printed on the upper surface of the dielectric substrate, the second radiation arm, the third radiation arm and the second feeder 6B are printed on the lower surface of the dielectric substrate 7, the first radiation arm and the third radiation arm form a + 45-degree polarized oscillator, the first feeder feeds power, the second radiation arm and the fourth radiation arm form a-45-degree polarized oscillator, and the second feeder feeds power, so that the isolation of 30dB can be basically realized.
The first feeder line and the second feeder line are perpendicular to each other, and the intersection point is located at the center point of the dielectric substrate.
The structure of four radiation arms is the same in this embodiment, and size is also the same, is the rhombus paster of printing at the medium base plate, the rhombus paster is opened there is a right angle type gap.
The right-angle type gap is located at the edge of one corner of the rhombic patch, the vertex of the direct type gap is close to the corner, the opening direction of the direct type gap faces the center of the antenna, namely the center point of the dielectric substrate, a resonance point is added by the right-angle type gap, and the bandwidth is expanded.
The side length of the diamond patch is about one-quarter wavelength corresponding to the central frequency 2.2GHz of the broadband base station antenna in a free space. The distance between the antenna radiation unit and the reflecting plate is 0.1 lambdaL-0.5λLWherein λ isLThe central frequency of the broadband base station antenna is 2.1GHz corresponding wavelength in free space.
The reflecting plate is of a structure with side edges.
The dielectric substrate adopts a high-frequency plate R04350B, the thickness is 0.76mm, and the relative dielectric constant is 3.45.
The antenna radiation unit is of a plane structure, can realize dual polarization bandwidth of 1400MHz-2720MHz, and return loss is larger than 15 dB.
The side length of the diamond patch is about one fifth wavelength of the central frequency 2.1GHz of the broadband base station antenna.
The utility model discloses still include coaxial line 2, coaxial line and first and second feeder are connected.
As shown in fig. 5, the impedance bandwidth of this embodiment is shown, and it can be concluded from fig. 5 that the dual-polarized antenna of the present invention has an impedance bandwidth of 1390-.
The broadband base station antenna with the bandwidth expansion function has the characteristics of novel structure, planar structure, simplicity in manufacture, large bandwidth, high isolation, stable radiation pattern, high gain and the like.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (9)
1. A planar spread spectrum broadband base station antenna comprises a reflecting plate and an antenna radiation unit, wherein the antenna radiation unit is fixed above the reflecting plate through a support column, and the planar spread spectrum broadband base station antenna is characterized in that the antenna radiation unit comprises a first radiation arm, a second radiation arm, a third radiation arm, a fourth radiation arm, a dielectric substrate and a feeder structure, the feeder structure comprises a first feeder and a second feeder, the first radiation arm, the fourth radiation arm and the first feeder are printed on the upper surface of the dielectric substrate, the second radiation arm, the third radiation arm and the second feeder are printed on the lower surface of the dielectric substrate, the first radiation arm and the third radiation arm form a + 45-degree polarized oscillator, the first feeder feeds power, the second radiation arm and the fourth radiation arm form a-45-degree polarized oscillator, and the second feeder feeds power;
the first radiating arm, the second radiating arm, the third radiating arm and the fourth radiating arm are identical in structure and are all rhombic patches, and right-angle gaps are formed in the rhombic patches.
2. A planar spread spectrum wideband base station antenna as claimed in claim 1 wherein said right angle slot is one.
3. A planar spread spectrum wideband base station antenna as claimed in claim 2, wherein said right angle slot is located at one corner of a diamond patch with its opening oriented towards the center of the antenna.
4. The planar spread spectrum broadband base station antenna of claim 1, wherein the first feed line and the second feed line are perpendicular to each other, and a perpendicular intersection point is located at a center point of the dielectric substrate.
5. The planar spread spectrum broadband base station antenna of claim 1, wherein the first and third radiating arms are symmetric about a center point of the dielectric substrate, and the second and fourth radiating arms are symmetric about the center point of the dielectric substrate.
6. The planar spread spectrum wideband base station antenna as claimed in claim 1, wherein said support posts are plastic-insulated posts.
7. The planar spread-spectrum wideband base station antenna as claimed in claim 1, wherein the distance between the reflecting plate and the antenna radiating element is 0.1 λL-0.5λLWherein λ isLThe central frequency of the broadband base station antenna is 2.1GHz corresponding wavelength in free space.
8. A planar spread spectrum broadband base station antenna according to any one of claims 1 to 7, further comprising a coaxial line, said coaxial line being connected to the first feeder line and the second feeder line.
9. The planar spread spectrum broadband base station antenna of claim 1, wherein the sides of the diamond shaped patches are one fifth wavelength of the central frequency 2.1GHz of the broadband base station antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822212.2U CN210607617U (en) | 2019-10-28 | 2019-10-28 | Plane spread spectrum broadband base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921822212.2U CN210607617U (en) | 2019-10-28 | 2019-10-28 | Plane spread spectrum broadband base station antenna |
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| CN210607617U true CN210607617U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676579A (en) * | 2019-10-28 | 2020-01-10 | 华南理工大学 | Plane spread spectrum broadband base station antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676579A (en) * | 2019-10-28 | 2020-01-10 | 华南理工大学 | Plane spread spectrum broadband base station antenna |
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