CN209516009U - A kind of low section dual polarization filtering magnetoelectricity dipole antenna - Google Patents
A kind of low section dual polarization filtering magnetoelectricity dipole antenna Download PDFInfo
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- CN209516009U CN209516009U CN201920258478.2U CN201920258478U CN209516009U CN 209516009 U CN209516009 U CN 209516009U CN 201920258478 U CN201920258478 U CN 201920258478U CN 209516009 U CN209516009 U CN 209516009U
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- dipole antenna
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- low section
- dual polarization
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Abstract
The utility model discloses a kind of low section dual polarizations to filter magnetoelectricity dipole antenna, including upper layer medium substrate and layer dielectric substrate, print radiator structure, the layer dielectric substrate printed slot couple feed network structure in the upper surface of the upper layer medium substrate；The radiator structure includes the parasitic patch in four pieces of symmetrical gaps of load, the parasitic patch loads grounding probe, the aperture-coupled network structure includes two groups of orthogonally located Y type feed lines and cross gap, and the cross gap is printed on metal floor.The high edge filter demodulation effect roll-offed can be introduced while increasing bandwidth by novel gap structure parasitic on radiator, and combines the good band-pass filtering property of aperture-coupled network implementations with filter function and hardly introduces additional Insertion Loss.
Description
Technical field
The utility model relates to field of radio frequency communication, and in particular to a kind of low section dual polarization filtering magnetoelectricity dipole day
Line.
Background technique
In recent years, the fast development of modern wireless communication systems requires low profile antenna to have high-performance.Multiband base station is
The necessity of mobile communication, the requirement for mobile communication is very high, and the strong mutual coupling between antenna element leads to radiation mode sharply
It degenerates.In order to solve this problem, there are many kinds of typical methods here, such as connect a duplexer with full band aerial array,
Or enhance isolation between port and port using decoupling network between different array elements.However, these modes are wanted
The additional unit asked inevitably increases the complexity of feeding network and introduces additional insertion loss.Recently, it filters
Antenna element is used to inhibit mutual coupling of the work between the unit of different frequency bands.When the out-of-band radiation of filter antenna unit is also pressed down
When processed, there is no need to additional duplexer and decoupling networks.2006, a kind of new complementation of Wong and Luk utility model
Antenna, referred to as magnetoelectricity dipole, it combines a short paster antenna and an electric dipole.This antenna have wide bandwidth,
The advantages that high and low cross polarization of directionality, low back lobe radiation, but since the thickness of magnetoelectricity dipole is larger, about 0.25 λ0,
It is inconvenient for use in many applications.
In recent years, the design of filter antenna is broadly divided into following several, the first design is by filter and antenna
For feed section collaborative design either filter and traditional antenna by impedance transformer simple cascade, second of design is to paste
Crack on chip antenna borehole or add metal probe in conjunction with and making radiator itself has filtering characteristic, the third design is to pass through
Adding non-radiative parasitic structure makes the radiation of antenna generate filter effect.
Low section dipole antenna in the prior art is by being pasted using two orthogonal H-type feed lines and a lamination
Piece realizes that the antenna has lower section, only 0.09 wavelength, but narrower bandwidth, only 11%.There are also low section dipoles
Antenna includes four square-shaped radiation patches for being etched with U-shaped and rectangular gap, four rectangular metal shortwalls, two intersection r shape feedbacks
Line and a box-like reflector, structure is complex, is not easy to realize miniaturization；
In existing dual polarization filtering dipole antenna design, to consider how spread bandwidth, reduce height and realize
Passband edges have the frequency selectivity quickly to roll-off and certain Out-of-band rejection ability.Furthermore it is required that dual polarized antenna list
Realize that high polarization isolation and antenna element have miniaturization feature between two ports of member.
In existing dual polarization filtering dipole antenna design, to consider how spread bandwidth, reduce height and realize
Passband edges have the frequency selectivity quickly to roll-off and certain Out-of-band rejection ability.Furthermore it is required that dual polarized antenna list
Realize that high polarization isolation and antenna element have miniaturization feature between two ports of member.
Utility model content
In order to overcome shortcoming and deficiency existing for prior art antenna, the utility model provides a kind of low section dual polarization filter
Wave magnetoelectricity dipole antenna, the radiance of the antenna be not only able to achieve the high filtering characteristic and high polarization isolation to roll-off, but also energy
Guarantee does not introduce additional Insertion Loss and extra structure bring area occupied, with spread bandwidth and can reduce height.
The utility model has low section and Gao Xuan by using the aperture-coupled network activation of fused filtering function
The radiator structure of selecting property filter response generates good broadband radiation characteristic and the high bandpass filtering effect roll-offed.
The utility model adopts the following technical solution:
A kind of low section dual polarization filtering magnetoelectricity dipole antenna, including upper layer medium substrate and layer dielectric substrate, institute
State the upper surface printing radiator structure of upper layer medium substrate, the layer dielectric substrate printed slot couple feed network knot
Structure；
The radiator structure includes the parasitic patch in four pieces of symmetrical gaps of load, and the parasitic patch load short circuit is visited
Needle；
The aperture-coupled network structure includes two groups of orthogonally located Y type feed lines and cross gap, described
Cross gap is printed on metal floor, and the metal floor is printed on the different tables of layer dielectric substrate from Y type feed line
Face, the parasitic patch are connect by grounding probe with metal floor.
The Y type feed line includes an one-to-two power splitter, and the output end of one-to-two power splitter connects two-way microstrip line,
The two-way microstrip line extends behind cross gap, and extension is bent, by cross slot-coupled
The parasitic patch of layer medium substrate introduces radiation and inhibits zero point.
The length of the extension is the half effective wavelength that the radiation inhibits dead-center position frequency.
The symmetrical gap structure includes about the diagonal symmetrical rectangular aperture of parasitic patch.
The utility model further includes two through-holes and the air bridges that are formed by strip line, and setting is handed in two groups of Y type feed lines
Vent is set.
The utility model has the beneficial effects that
(1) dipole antenna configuration is simple, low in cost, is increased by novel gap structure parasitic on radiator
The high edge filter demodulation effect roll-offed can be introduced while bandwidth；
(2) filter antenna unit has a good radiance in passband, have outside passband height roll-off with outside good band
The bandpass filtering effect of rejection ability realizes that the mode of filtering performance does not bring additional processing cost and widely applicable, and
And it is not introduced into additional Insertion Loss；
(3) the characteristics of filter antenna unit has low section, and working band is wide, high-gain, and the directional diagram wave in passband
Valve is stablized, and cross polarization is low, and the feed structure of not same polarization port is almost symmetrical and isolation is higher.
Detailed description of the invention
Fig. 1 is the side view of the antenna structure of the utility model；
Fig. 2 is the radiator structure figure of the utility model；
Fig. 3 is the aperture-coupled network structure of the utility model；
Fig. 4 (a) and Fig. 4 (b) is the structural schematic diagram in the symmetrical gap of the utility model；
Fig. 5 is result figure of the utility model works in emulation and the reflection coefficient S11- frequency of measuring state；
Fig. 6 is actual gain-frequency result figure of the utility model works in emulation and measuring state；
Fig. 7 is result figure of the utility model works in emulation and the transmission coefficient S21- frequency of measuring state.
Specific embodiment
Below with reference to examples and drawings, the utility model is described in further detail, but the reality of the utility model
It is without being limited thereto to apply mode.
Embodiment
It is spaced apart upper including two layers as shown in Figure 1, a kind of low section dual polarization filters magnetoelectricity dipole antenna
Print radiator structure, the layer dielectric in the upper surface of layer medium substrate and layer dielectric substrate, the upper layer medium substrate
Substrate printed slot couple feed network structure has low section using the aperture-coupled network activation of fused filtering function
With the radiator structure of highly selective filter response, good broadband radiation characteristic and the high bandpass filtering effect roll-offed are generated
Fruit.
As shown in Fig. 2, the radiator structure includes the parasitic patch 3 of the symmetrical gap 1 of four pieces of loads and grounding probe 2,
Four pieces of parasitic patch constitute a rectangular configuration, and the symmetrical gap in the present embodiment is to open in each piece of parasitic patch
Having two, diagonally symmetrical gap, parasitic patch are rectangle about parasitic patch, and short circuit is arranged at an angle of parasitic patch
Probe, forms a kind of novel low section filtering magnetoelectricity dipole antenna, and four grounding probes in the present embodiment are arranged at
On the angle of upper layer medium substrate central point.The parasitic patch is connect by grounding probe with metal floor 4；
Pass through the plane eelctric dipole of the magnetic dipole mode and patch that form gap radiation bore between short-circuit patch
Subpattern combines the magnetoelectricity dipole operating submode formed, and height can significantly be dropped compared to traditional magnetoelectricity dipole antenna
It is low, and by etching symmetrical gap structure on metal patch, the extra resonance mode of introducing is high by reduction antenna to offset
It spends and introduces a radiation inhibition zero point while bring impedance matching deteriorates on the right side of passband, improve the frequency choosing of passband edges
Selecting property and Out-of-band rejection.
It is that other different shapes loaded in parasitic patch described in the utility model lack as shown in Fig. 4 (a) and Fig. 4 (b)
Fall into a sample cases of structure.
Symmetrical gap can be other with symmetrical different shape, including hollowing out different geometries among patch
Structure and surrounding edge cut the gap of four certain lengths, can improve the frequency selectivity on passband upper side edge edge.
As shown in figure 3, the aperture-coupled network structure includes two groups of orthogonally located Y type feed lines and cross
Gap 8, the cross gap are printed on metal floor, and the metal floor and Y type feed line are printed on layer dielectric base
The different surfaces of plate.Metal floor prints cross seam on the lower surface of layer dielectric substrate, metal floor in the present embodiment
Gap, cross gap are printed on the upper table of layer dielectric substrate about layer dielectric substrate center point symmetry, the Y type feed line
Face.
Described two groups orthogonally located Y type feed lines 7, one group of Y type feed line is located at the side of layer dielectric substrate, another
Group Y type feed line is located at one end of layer dielectric substrate, and a Y type feed line is located at a left side for layer dielectric substrate in the present embodiment
Side, one is located at the lower end of layer dielectric substrate.The Y type feed line includes an one-to-two power splitter, the one-to-two function
It is divided to two output ends of device to connect two-way microstrip line, the two-way microstrip line is extended to centainly after passing perpendicularly through cross gap
Length, and extension is bent to minimize processing, the two-way microstrip line of two power splitters positioned at one end vertically passes through
The transverse slot in cross gap is crossed, two microstrip lines in addition pass perpendicularly through the longitudinal slot in cross gap.Two one point
Four extension length of two power splitters are identical, and bending process mode is identical, pass through the cross seam in upper layer middle position
Gap couples the parasitic patch on upper layer, can introduce a radiation and inhibit zero point, and prolongation of the microstrip line behind gap is specific
Length is the half effective wavelength that the radiation inhibits dead-center position frequency, and the principle for generating filter effect is as follows:
The microstrip line tip length of traditional slot-coupled is used only to adjust Antenna Impedance Matching, and in the present embodiment will be micro-
Band line terminal extension.Since microstrip line end is open-circuit condition, by half effective wavelength to feed gaps still etc.
Effect is open-circuit condition, and the amplitude of input current is zero, thus energy can not patch above from transmission line coupling to gap, at this
Frequency can generate the one high transmission zero inhibited, can adjust the position that radiation inhibits zero point by adjusting microstrip line extended end length
It sets to passband lower side edge, realizes the high-pass filtering characteristic that Wide stop bands height roll-offs.It is filtered in conjunction with the high pass of extended pattern feeding microstrip line
The low-frequency filter characteristics of wave property and the parasitic patch of load gap structure, finally make antenna realize good bandpass filtering
Performance.
As shown in figure 3, extended microstrip line 6 is located at the lower section for loading the metal floor in cross gap 8, by with gap
Coupling so that energy is fed the patch on upper layer, the length of prolongation of the microstrip line behind gap is that radiation inhibits zero point
The half effective wavelength of position frequency.
As shown in figure 3, avoiding two orthogonal feeding networks from handing over using the air bridges 5 that two through-holes and strip line are formed
Fork.
It is the reflection for the dual polarization filtering dipole antenna that the utility model one embodiment provides as shown in Fig. 5-Fig. 6
The result figure of coefficient S 11- frequency and the emulation of gain curve-frequency and measurement, the matching of passband internal impedance is good, and impedance bandwidth is
3.3-4.36GHz, return loss is below -15dB；Gain is about 8.2dBi in working frequency range, and passband two sides are roll-offed with height
Filtering characteristic, and realize from 0-3GHz be more than 20dB filtering inhibit, and from 4.7-5.5GHz be more than 25dB with outer filter
Wave inhibits.
As shown in fig. 7, being the transmission coefficient for the dual polarization filtering dipole antenna that the utility model one embodiment provides
The result figure of emulation and the measurement of S21- frequency, the isolation of two ports is preferable in passband, below -25dB.
The utility model embodiment has the advantages that
(1) dipole antenna configuration is simple, low in cost, is increased by novel gap structure parasitic on radiator
The high edge filter demodulation effect roll-offed can be introduced while bandwidth；
(2) filter antenna unit has a good radiance in passband, have outside passband height roll-off with outside good band
The bandpass filtering effect of rejection ability realizes that the mode of filtering performance does not bring additional processing cost and widely applicable, and
And it is not introduced into additional Insertion Loss；
(3) the characteristics of filter antenna unit has low section, and working band is wide, high-gain, and the directional diagram wave in passband
Valve is stablized, and cross polarization is low, and the feed structure of not same polarization port is almost symmetrical and isolation is high.
Embodiment provided by the utility model can according to demand be adjusted the size of dependency structure and adapt to different
In the reception and transmitting equipment of the wireless communication system of frequency band, due to the filtering characteristic of the utility model, especially suitable for opening
In the communication scenes of wealthy complexity.The integrated of filtering characteristic and radiation characteristic is benefited from simultaneously, and the utility model is also applied for wirelessly
Mobile communication system equipment integration and it is integrated.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (5)
1. a kind of low section dual polarization filters magnetoelectricity dipole antenna, which is characterized in that be situated between including upper layer medium substrate and lower layer
Radiator structure, the layer dielectric substrate printed slot coupling feedback are printed in matter substrate, the upper surface of the upper layer medium substrate
Electric network structure；
The radiator structure includes the parasitic patch in four pieces of symmetrical gaps of load, and the parasitic patch also loads grounding probe；
The aperture-coupled network structure includes two groups of orthogonally located Y type feed lines and cross gap, the cross
Type gap is printed on metal floor, and the metal floor is printed on the different surfaces of layer dielectric substrate, institute with Y type feed line
Parasitic patch is stated to connect by grounding probe with metal floor.
2. low section dual polarization according to claim 1 filters magnetoelectricity dipole antenna, which is characterized in that the Y type feedback
Electric wire includes an one-to-two power splitter, and the output end of one-to-two power splitter connects two-way microstrip line, the two-way microstrip line warp
Extend after crossing cross gap, and extension is bent, passes through the parasitism of cross slot-coupled upper layer medium substrate
Patch introduces radiation and inhibits zero point.
3. low section dual polarization according to claim 2 filters magnetoelectricity dipole antenna, which is characterized in that the extension
The length divided is the half effective wavelength that the radiation inhibits dead-center position frequency.
4. low section dual polarization according to claim 1 filters magnetoelectricity dipole antenna, which is characterized in that the symmetrical seam
Gap structure includes about the diagonal symmetrical rectangular aperture of parasitic patch.
5. low section dual polarization according to claim 1 filters magnetoelectricity dipole antenna, which is characterized in that further include two
Through-hole and the air bridges formed by strip line are arranged in two groups of Y type feed line crossover locations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920258478.2U CN209516009U (en) | 2019-03-01 | 2019-03-01 | A kind of low section dual polarization filtering magnetoelectricity dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920258478.2U CN209516009U (en) | 2019-03-01 | 2019-03-01 | A kind of low section dual polarization filtering magnetoelectricity dipole antenna |
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| Publication Number | Publication Date |
|---|---|
| CN209516009U true CN209516009U (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920258478.2U Expired - Fee Related CN209516009U (en) | 2019-03-01 | 2019-03-01 | A kind of low section dual polarization filtering magnetoelectricity dipole antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883910A (en) * | 2020-06-04 | 2020-11-03 | 华南理工大学 | Dual-polarized low-profile magnetoelectric dipole antenna and wireless communication equipment |
| CN113690597A (en) * | 2021-08-09 | 2021-11-23 | 国网江苏省电力有限公司镇江供电分公司 | Low-profile broadband circularly polarized antenna based on super surface |
| CN113991295A (en) * | 2021-11-12 | 2022-01-28 | 京信射频技术(广州)有限公司 | Vehicle-mounted antenna |
| CN114284736A (en) * | 2021-12-31 | 2022-04-05 | 厦门大学 | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna |
| CN114696088A (en) * | 2022-06-01 | 2022-07-01 | 中山大学 | Broadband low-profile magnetoelectric dipole antenna based on lamination technology |
| CN116722360A (en) * | 2023-08-10 | 2023-09-08 | 广东工业大学 | Stacked high-isolation full-duplex antenna based on deep learning optimization and communication equipment |
-
2019
- 2019-03-01 CN CN201920258478.2U patent/CN209516009U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111883910A (en) * | 2020-06-04 | 2020-11-03 | 华南理工大学 | Dual-polarized low-profile magnetoelectric dipole antenna and wireless communication equipment |
| CN111883910B (en) * | 2020-06-04 | 2021-10-15 | 华南理工大学 | Dual-polarized low-profile magnetoelectric dipole antenna and wireless communication equipment |
| CN113690597A (en) * | 2021-08-09 | 2021-11-23 | 国网江苏省电力有限公司镇江供电分公司 | Low-profile broadband circularly polarized antenna based on super surface |
| CN113690597B (en) * | 2021-08-09 | 2024-03-26 | 国网江苏省电力有限公司镇江供电分公司 | Low-profile broadband circularly polarized antenna based on super surface |
| CN113991295A (en) * | 2021-11-12 | 2022-01-28 | 京信射频技术(广州)有限公司 | Vehicle-mounted antenna |
| CN114284736A (en) * | 2021-12-31 | 2022-04-05 | 厦门大学 | Millimeter-wave wide-band high-gain dual-polarization magnetoelectric dipole filter antenna |
| CN114696088A (en) * | 2022-06-01 | 2022-07-01 | 中山大学 | Broadband low-profile magnetoelectric dipole antenna based on lamination technology |
| CN114696088B (en) * | 2022-06-01 | 2022-10-25 | 中山大学 | Broadband low-profile magnetoelectric dipole antenna based on lamination technology |
| CN116722360A (en) * | 2023-08-10 | 2023-09-08 | 广东工业大学 | Stacked high-isolation full-duplex antenna based on deep learning optimization and communication equipment |
| CN116722360B (en) * | 2023-08-10 | 2023-10-31 | 广东工业大学 | Stacked high-isolation full-duplex antenna based on deep learning optimization and communication equipment |
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Granted publication date: 20191018 |