CN108847528A - Wideband filtered slot antenna and wireless telecom equipment - Google Patents
Wideband filtered slot antenna and wireless telecom equipment Download PDFInfo
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- CN108847528A CN108847528A CN201810783825.3A CN201810783825A CN108847528A CN 108847528 A CN108847528 A CN 108847528A CN 201810783825 A CN201810783825 A CN 201810783825A CN 108847528 A CN108847528 A CN 108847528A
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- fine crack
- floor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of wideband filtered slot antenna and wireless telecom equipments, the antenna includes medium substrate, microstrip feed line, floor, two step electric impedance resonator minor matters and two parasitic patch, the microstrip feed line and two step electric impedance resonator minor matters are arranged at medium substrate upper surface, and two step electric impedance resonator minor matters are symmetrical about microstrip feed line, and are connected respectively with the two sides of microstrip feed line；The floor setting is etched with dumbbell shaped gap in medium substrate lower surface, and on floor, and described two parasitic patch are symmetricly set at the both ends line of rabbet joint in dumbbell shaped gap；The wireless telecom equipment includes above-mentioned antenna.Wideband filtered slot antenna of the invention has filtering characteristic, and easy processing, structure are simple, at low cost, bandwidth, can be applied in the wireless telecommunication systems such as ISM, Wi-MAX and 5G within the scope of 2.14GHz~4.04GHz.
Description
Technical field
The present invention relates to a kind of filter antenna, especially a kind of wideband filtered slot antenna and wireless telecom equipment belong to
Wireless communication technology field.
Background technique
The rapid development of wireless communication technique, so that various electronic equipments all develop towards broadband, multifunctional direction,
And antenna is as wireless communication technique bridge and air interface, it is also inevitable to develop towards this direction.Traditional antenna does not have
Filter function, so that radio-frequency front-end usually requires addition filter and reaches real requirement, and the addition of filter not only will increase
The volume of equipment can also bring additional loss；Then the filter antenna for possessing filter function is developed.But it is general
Its frequency band of filter antenna is relatively narrow, and which results in the wireless communication needs that antenna can no longer meet high rate transmissions.Therefore, broadband
The research of filter antenna becomes an important project.
With the development of broadband communication network technology, especially present 4G communicates one step of key for 5G communication process of marching toward,
5G mobile communication technology is the development trend in future.But, its structure is complicated for the narrower bandwidth of present filter antenna, this is for day
The cost of manufacture and utilization and extention of line are not ideal.
According to investigations with understanding, disclosed prior art is as follows：
16 phases in 2017《IEEE Antennas Wireless Propag.Lett.》, H.T.Hu, F.C.Chen, and
Q.X.Chu delivers entitled " Novel Broadband Filtering Slotline Antennas Excited by
A kind of novel wideband filtered antenna is proposed in the article of Multimode Resonators ".This article uses multimode resonance
The feed structure of device can produce multiple modes using multimode resonator, realize spread bandwidth with this, and at the same time producing spoke
Zero point is penetrated, preferable frequency selectivity is realized.Research shows that the filter antenna has preferable filtering characteristic and broadband character.
Summary of the invention
The purpose of the present invention is to solve in place of above-mentioned the deficiencies in the prior art, provide a kind of wideband filtered gap day
Line, the antenna have filtering characteristic, and easy processing, structure are simple, at low cost, bandwidth, can be applied to 2.14GHz~
In the wireless telecommunication systems such as ISM, Wi-MAX and 5G within the scope of 4.04GHz.
Another object of the present invention is to provide a kind of wireless telecom equipments.
The purpose of the present invention can be reached by adopting the following technical scheme that：
Wideband filtered slot antenna, including medium substrate, microstrip feed line, floor, two step electric impedance resonator minor matters with
And two parasitic patch, the microstrip feed line and two step electric impedance resonator minor matters are arranged at medium substrate upper surface, and
Two step electric impedance resonator minor matters are symmetrical about microstrip feed line, and are connected respectively with the two sides of microstrip feed line；The floor is set
It sets in medium substrate lower surface, and is etched with dumbbell shaped gap on floor, described two parasitic patch are symmetricly set on dumbbell shaped
At the both ends line of rabbet joint in gap.
Further, eight fine cracks are also etched on the floor, wherein four fine cracks are as first group of fine crack, in addition four
As second group of fine crack, first group of fine crack and second group of fine crack are symmetrical for fine crack, four fine cracks of first group of fine crack respectively with it is mute
Four angles of the bell-shaped gap first end line of rabbet joint are connected, four fine cracks of second group of fine crack respectively with the dumbbell shaped gap second end line of rabbet joint
Four angles be connected.
Further, four fine cracks of first group of fine crack are from the surface on floor, with dumbbell shaped gap first end
The connected fine crack in the upper right corner of the line of rabbet joint, the lower right corner is that two long sides are setting up and down, rectangle fine crack of two short side left and right settings,
The fine crack being connected with the upper left corner, the lower left corner of the dumbbell shaped gap first end line of rabbet joint is two long side left and right settings, two short sides
Rectangle fine crack setting up and down；
Upper left of four fine cracks of second group of fine crack from the surface on floor, with the dumbbell shaped gap second end line of rabbet joint
The connected fine crack in angle, the lower left corner is that two long sides are setting up and down, rectangle fine crack of two short side left and right settings, is stitched with dumbbell shaped
The connected fine crack in the upper right corner of the gap second end line of rabbet joint, the lower right corner is that two long side left and right settings, two short sides are setting up and down
Rectangle fine crack.
Further, the middle position of medium substrate upper surface is arranged in the microstrip feed line.
Further, the open end shape of the microstrip feed line be circle, two step electric impedance resonator minor matters respectively with
Two sides any position of the microstrip feed line in addition to open end is connected.
Further, each step electric impedance resonator minor matters are in terms of medium substrate upper surface, including first level minor matters section,
Second horizontal branch segment and vertical minor matters section, the first level minor matters section pass sequentially through vertical minor matters section, the second horizontal minor matters
Section is connected with the side of microstrip feed line.
Further, of same size, the first level of the width of second horizontal branch segment and vertical minor matters section
The width of minor matters section is greater than the width of the second horizontal branch segment and vertical minor matters section, and the length of first level minor matters section is greater than second
The length of horizontal branch segment, and the length of first level minor matters section is less than the length of vertical minor matters section.
Further, described two parasitic patch are symmetricly set on the middle position of the both ends line of rabbet joint in dumbbell shaped gap.
Further, described two parasitic patch are rectangular patch.
Further, the medium substrate and the cross sectional shape on floor are rectangle, length, width and the ground of medium substrate
It is the length of plate, of same size, and the thickness of medium substrate is greater than the thickness on floor.
Further, the microstrip feed line, floor, two step electric impedance resonator minor matters and two parasitic patch are all made of
Metal material is made.
Another object of the present invention can be reached by adopting the following technical scheme that：
Wireless telecom equipment, including above-mentioned wideband filtered slot antenna.
The present invention has following beneficial effect compared with the existing technology：
1, wideband filtered slot antenna of the invention does not need complicated filter compared with the design of the filter antenna of the prior art
Wave feed structure, structure is simple, two step electric impedance resonator minor matters and two parasitic patch is provided with, by two stepped impedances
Resonator minor matters are connected with microstrip feed line, and two parasitic patch are arranged in the both ends in the dumbbell shaped gap etched on floor
At the line of rabbet joint, due to the addition of a pair of of step electric impedance resonator minor matters and a pair of of parasitic patch, preferable frequency selection is realized
Property, and show its broader bandwidth from the simulation result of input port return loss, it can satisfy 2.14GHz~4.04GHz model
The requirement of the wireless telecommunication systems such as ISM, Wi-MAX and 5G in enclosing application.
2, in wideband filtered slot antenna of the invention, eight fine cracks can also be etched on floor, this eight fine cracks are used to
The mode of resonance of portable antenna makes the mode of resonance of highest frequency range to close compared with low frequency, so as to improve the impedance matching of high band.
3, in wideband filtered slot antenna of the invention, it is circle by the open end shape optimum of microstrip feed line, can adjusts
Impedance matching is saved, and reduces the length of microstrip feed line.
4, wideband filtered slot antenna of the invention uses single-layer medium substrate, and structure is simple, the processing work of medium substrate
Skill is mature, and at low cost, high yield rate, manufacturing process is simple, can satisfy the requirement of antenna low cost.
5, wideband filtered antenna of the invention has the advantages that structure is simple, low section, and the parameter for needing to adjust is less, holds
Easy processing design, is suitble to engineer application, and solving some filter antennas of the prior art, structure is complicated, narrow bandwidth, and frequency is selected
The bad problem of selecting property.
Detailed description of the invention
Fig. 1 is the wideband filtered slot antenna medium substrate upper and lower surface perspective view of the embodiment of the present invention.
Fig. 2 is the wideband filtered slot antenna medium substrate upper and lower surface front view of the embodiment of the present invention.
Fig. 3 is the top view of the wideband filtered slot antenna of the embodiment of the present invention.
Fig. 4 is the bottom view of the wideband filtered slot antenna of the embodiment of the present invention.
Fig. 5 is the wideband filtered slot antenna of the embodiment of the present invention | S11| and the simulation result curve of gain (Gain) parameter
Figure, wherein solid line is | S11| simulation curve, dotted line are gain simulation curve.
Fig. 6 is the simulation result curve graph of the wideband filtered slot antenna radiation efficiency parameter of the embodiment of the present invention.
Fig. 7 is the principal plane antenna pattern of the wideband filtered slot antenna of the embodiment of the present invention.
Wherein, 1- medium substrate, 2- microstrip feed line, 201- open end, the floor 3-, 4- step electric impedance resonator, 401-
One horizontal branch segment, the second horizontal branch of 402- segment, the vertical minor matters section of 403-, 5- parasitic patch, 6- dumbbell shaped gap, 7- are thin
Seam.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Embodiment：
As depicted in figs. 1 and 2, a kind of wideband filtered slot antenna is present embodiments provided, which can be applied to nothing
In line communication equipment comprising medium substrate 1, microstrip feed line 2,3, two, floor step electric impedance resonator (Stepped-
Impedance-Resonators, SIR) minor matters 4 and two parasitic patch 5, microstrip feed line 2 and two step electric impedance resonators
Minor matters 4 are arranged at 1 upper surface of medium substrate, and the setting of floor 3 is in 1 lower surface of medium substrate, section of medium substrate 1 and floor 3
Face shape is rectangle, the length of medium substrate 1, the length of width and floor 3, of same size, and the thickness of medium substrate 1 is big
Thickness in floor 3.
As shown in FIG. 1 to 3, microstrip feed line 2 is arranged on the width direction midline position of 1 upper surface of medium substrate,
Feed end is located at the lower edge of 1 upper surface of medium substrate, and two step electric impedance resonator minor matters 4 are symmetrical about microstrip feed line 2,
Constitute a pair of of step electric impedance resonator minor matters, two step electric impedance resonator minor matters 4 respectively with the left and right sides phase of microstrip feed line 2
Even, specifically, 201 shape optimum of open end of microstrip feed line 2 is round, adjustable impedance matching, and reduces microstrip feed line 2
Length, two step electric impedance resonator minor matters 4 left and right sides any position with microstrip feed line 2 in addition to open end 201 respectively
It is connected.
Further, each step electric impedance resonator minor matters 4 are in terms of 1 upper surface of medium substrate, including first level minor matters
The 401, second horizontal branch segment 402 of section and vertical minor matters section 403, first level minor matters section 401 passes sequentially through vertical minor matters section
403, the second horizontal branch segment 402 is connected with the side of microstrip feed line 2, specifically, one end of first level minor matters section 401 and perpendicular
One end of straight minor matters section 403 is connected, and the other end of vertical minor matters section 403 is connected with one end of the second horizontal branch segment 402, the left side
402 other end of the second horizontal branch segment of step electric impedance resonator minor matters 4 is connected with the left side of microstrip feed line 2, the resistance of the right ladder
402 other end of the second horizontal branch segment of antiresonance device minor matters 4 is connected with the right side of microstrip feed line 2；Wherein, the second horizontal minor matters
The width of section 402 is of same size with vertical minor matters section 403, and it is horizontal that the width of the first level minor matters section 401 is greater than second
The length of the width of minor matters section 402 and vertical minor matters section 403, first level minor matters section 401 is greater than the second horizontal branch segment 402
Length, and the length of first level minor matters section 401 is less than the length of vertical minor matters section 403.
As shown in Figure 1, Figure 2 and Figure 4, it is etched with dumbbell shaped gap 6 on the floor 3, those skilled in the art can manage
Solution all has the line of rabbet joint between the first end (left end) in dumbbell shaped gap 6, second end (right end) and both ends, with the length on floor 3
Direction is x-axis direction, and width direction is y-axis direction, and the length of the line of rabbet joint at both ends in the direction of the x axis is less than the line of rabbet joint between both ends
Length in the direction of the x axis, the length of the line of rabbet joint at both ends in the y-axis direction are greater than the line of rabbet joint between both ends in the y-axis direction
Length, the microstrip feed line 2 of the present embodiment intersect and vertical in the projection on floor 3 and the line of rabbet joint between 6 both ends of dumbbell shaped gap,
Two parasitic patch 5 are rectangular patch, and are symmetricly set at the left and right ends line of rabbet joint in dumbbell shaped gap 6, constitute a pair and post
Raw patch, specifically, two parasitic patch 5 are symmetricly set on the middle position of the left and right ends line of rabbet joint in dumbbell shaped gap 6, pass through
Two step electric impedance resonator minor matters 4 and two parasitic patch 5 are added, realize preferable frequency selectivity, and obtain
Wider bandwidth.
Further, eight fine cracks 7 are also etched on floor 3, this eight fine cracks 7 are used to the mode of resonance of portable antenna,
Make the mode of resonance of highest frequency range to close compared with low frequency, so as to improve the impedance matching of high band, wherein four articles of fine cracks 7 are as the
One group of fine crack, in addition four fine cracks 7 are used as second group of fine crack, first group of fine crack and second group of fine crack bilateral symmetry, first group thin
Four fine cracks 7 of seam are connected with four angles of the dumbbell shaped gap first end line of rabbet joint respectively, four fine cracks 7 difference of second group of fine crack
It is connected with four angles of the 6 second end line of rabbet joint of dumbbell shaped gap.
Further, four fine cracks 7 of first group of fine crack are from the surface on floor 3, with 6 first end of dumbbell shaped gap
The fine crack 7 that the upper right corner, the lower right corner of the line of rabbet joint are connected is that two long sides are setting up and down, the rectangle of two short side left and right settings is thin
Seam, the fine crack 7 being connected with the upper left corner, the lower left corner of the 6 first end line of rabbet joint of dumbbell shaped gap is two long side left and right settings, two
Short side rectangle fine crack setting up and down；Four fine cracks 7 of second group of fine crack are from the surface on floor, with dumbbell shaped gap 6
The connected fine crack 7 in the upper left corner, the lower left corner of two end slots seam is that two long sides are setting up and down, rectangle of two short side left and right settings
Fine crack, the fine crack 7 being connected with the upper right corner, the lower right corner of the 6 second end line of rabbet joint of dumbbell shaped gap are two long side left and right settings, two
Short side rectangle fine crack setting up and down.
It is imitative with electromagnetic field by calculating after the dimensional parameters for adjusting wideband filtered slot antenna each section of the present embodiment
Very, to the wideband filtered slot antenna of the present embodiment carried out verifying emulation, as shown in figure 5, give the antenna 1GHz~
In 5.5GHz frequency range | S11| the curve of (input port return loss) and gain (Gain) parameters simulation result has in figure
Two curves, solid line be | S11| simulation parameter, dotted line are gain simulation parameter；It can be seen that in 2.14GHz~4.04GHz frequency
In segment limit, the value of block curve is less than -10dB, and for dotted line value within the scope of 3dB~5.1dB, simulation result shows the present embodiment
Wideband filtered slot antenna have wider bandwidth, it is functional, can satisfy the model applied to 2.14GHz~4.04GHz
The requirement of the wireless telecommunication systems such as ISM, Wi-MAX and 5G in enclosing application.
The simulation result curve of the radiation efficiency parameter of the wideband filtered slot antenna of the present embodiment is as shown in fig. 6, can be with
See, which, up to 90% or so, promptly declines, it is seen that antenna has in passband outside low-and high-frequency passband
Good frequency selectivity；Radiation side of the model of the wideband filtered slot antenna HFSS emulation of the present embodiment in 3.52GHz
It is as shown in Figure 7 to figure, it can be seen that, which is bidirectional radiation, and greatest irradiation direction is in z-axis direction, the cross-pole of the antenna
Change is smaller, more main polarization to be lower than 38dB.
In above-described embodiment, the medium substrate 1 is using FR-4, polyimides, polytetrafluoroethylglass glass cloth and cofiring pottery
Any two various materials are constituted in porcelain；The microstrip feed line 2, floor 3, step electric impedance resonator minor matters 4 and parasitic patch 5 are adopted
Be made of metal material, metal material can be any one of aluminium, iron, tin, copper, silver, gold and platinum, or for aluminium, iron, tin, copper,
Silver, gold and platinum any one alloy；The wireless telecom equipment can be the electronic equipments such as mobile phone, tablet computer.
In conclusion wideband filtered slot antenna of the invention does not need compared with the design of the filter antenna of the prior art
Complicated filtering feed structure, structure is simple, two step electric impedance resonator minor matters and two parasitic patch is provided with, by two
Step electric impedance resonator minor matters are connected with microstrip feed line, and two parasitic patch are arranged in the dumbbell shaped seam etched on floor
At the both ends line of rabbet joint of gap, due to the addition of a pair of of step electric impedance resonator minor matters and a pair of of parasitic patch, realize preferable
Frequency selectivity, and show its broader bandwidth from the simulation result of input port return loss, can satisfy 2.14GHz~
The requirement of the wireless telecommunication systems such as ISM, Wi-MAX and 5G within the scope of 4.04GHz application.
The above, only the invention patent preferred embodiment, but the scope of protection of the patent of the present invention is not limited to
This, anyone skilled in the art is in the range disclosed in the invention patent, according to the present invention the skill of patent
Art scheme and its inventive concept are subject to equivalent substitution or change, belong to the scope of protection of the patent of the present invention.
Claims (10)
1. wideband filtered slot antenna, it is characterised in that：Including medium substrate, microstrip feed line, floor, two stepped impedance resonance
Device minor matters and two parasitic patch, the microstrip feed line and two step electric impedance resonator minor matters are arranged on medium substrate
Surface, and two step electric impedance resonator minor matters are symmetrical about microstrip feed line, and are connected respectively with the two sides of microstrip feed line；It is described
Floor setting is etched with dumbbell shaped gap in medium substrate lower surface, and on floor, and described two parasitic patch are symmetricly set on
At the both ends line of rabbet joint in dumbbell shaped gap.
2. wideband filtered slot antenna according to claim 1, it is characterised in that：It is also etched on the floor eight thin
Seam, wherein four fine cracks are as first group of fine crack, in addition four fine cracks are as second group of fine crack, first group of fine crack and second group thin
Seam is symmetrical, and four fine cracks of first group of fine crack are connected with four angles of the dumbbell shaped gap first end line of rabbet joint respectively, second group of fine crack
Four fine cracks be connected respectively with four angles of the dumbbell shaped gap second end line of rabbet joint.
3. wideband filtered slot antenna according to claim 2, it is characterised in that：Four fine cracks of first group of fine crack
From the surface on floor, the fine crack being connected with the upper right corner, the lower right corner of the dumbbell shaped gap first end line of rabbet joint is two long sides
Setting up and down, two short side left and right settings rectangle fine crack, is connected with the upper left corner, the lower left corner of the dumbbell shaped gap first end line of rabbet joint
Fine crack be two long side left and right settings, two short sides rectangle fine crack setting up and down；
Four fine cracks of second group of fine crack from the surface on floor, with the upper left corner of the dumbbell shaped gap second end line of rabbet joint,
The connected fine crack in the lower left corner is that two long sides are setting up and down, rectangle fine crack of two short side left and right settings, with dumbbell shaped gap
The connected fine crack in the upper right corner of the second end line of rabbet joint, the lower right corner is two long side left and right settings, two short sides square setting up and down
Shape fine crack.
4. wideband filtered slot antenna according to claim 1-3, it is characterised in that：The microstrip feed line is opened
Terminal shape is circle, two step electric impedance resonator minor matters two sides any position phase with microstrip feed line in addition to open end respectively
Even.
5. wideband filtered slot antenna according to claim 1-3, it is characterised in that：Each stepped impedance resonance
Device minor matters are in terms of medium substrate upper surface, including first level minor matters section, the second horizontal branch segment and vertical minor matters section, and described
One horizontal branch segment passes sequentially through vertical minor matters section, the second horizontal branch segment is connected with the side of microstrip feed line.
6. wideband filtered slot antenna according to claim 5, it is characterised in that：The width of second horizontal branch segment
Of same size with vertical minor matters section, the width of the first level minor matters section is greater than the second horizontal branch segment and vertical minor matters section
Width, the length of first level minor matters section is greater than the length of the second horizontal branch segment, and the length of first level minor matters section is small
In the length of vertical minor matters section.
7. wideband filtered slot antenna according to claim 1-3, it is characterised in that：Described two parasitic patch
It is symmetricly set on the middle position of the both ends line of rabbet joint in dumbbell shaped gap.
8. wideband filtered slot antenna according to claim 1-3, it is characterised in that：Described two parasitic patch
It is rectangular patch.
9. wideband filtered slot antenna according to claim 1-3, it is characterised in that：The medium substrate and ground
The cross sectional shape of plate is rectangle, length, width and the length on floor of medium substrate, of same size, and the thickness of medium substrate
Degree is greater than the thickness on floor.
10. wireless telecom equipment, it is characterised in that：Including the described in any item wideband filtered slot antennas of claim 1-9.
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| CN110600870A (en) * | 2019-09-29 | 2019-12-20 | 华南理工大学 | 5G large-frequency-ratio antenna with high harmonic suppression |
| CN112582789A (en) * | 2019-09-29 | 2021-03-30 | 比亚迪股份有限公司 | Bidirectional broadband antenna and wireless communication device with same |
| CN113314838A (en) * | 2021-07-29 | 2021-08-27 | 成都频时科技有限公司 | Planar low-profile microstrip filtering antenna based on band-pass filter prototype |
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| CN110600870A (en) * | 2019-09-29 | 2019-12-20 | 华南理工大学 | 5G large-frequency-ratio antenna with high harmonic suppression |
| CN112582789A (en) * | 2019-09-29 | 2021-03-30 | 比亚迪股份有限公司 | Bidirectional broadband antenna and wireless communication device with same |
| CN112582789B (en) * | 2019-09-29 | 2022-09-06 | 比亚迪股份有限公司 | Bidirectional broadband antenna and wireless communication device with same |
| CN110600870B (en) * | 2019-09-29 | 2024-03-22 | 华南理工大学 | 5G large-frequency-ratio antenna with high harmonic suppression |
| CN113314838A (en) * | 2021-07-29 | 2021-08-27 | 成都频时科技有限公司 | Planar low-profile microstrip filtering antenna based on band-pass filter prototype |
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