CN207572523U - A kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor - Google Patents
A kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor Download PDFInfo
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- CN207572523U CN207572523U CN201721827701.8U CN201721827701U CN207572523U CN 207572523 U CN207572523 U CN 207572523U CN 201721827701 U CN201721827701 U CN 201721827701U CN 207572523 U CN207572523 U CN 207572523U
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- cupuliform
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Abstract
The utility model discloses a kind of cupuliform super wide band plane single pole sub antennas with ladder open-circuit structure floor, are made of medium substrate, the cupuliform feed terminal, coplanar waveguide feeder line, ladder open-circuit structure floor and the external coaxial fitting that are printed on medium substrate.The lateral dimension of cupuliform feed terminal from top to bottom is gradually reduced, and so as to form the radiation zone of different frequency, antenna is made to have ultra wide band characteristic.Antenna can be made to generate resonance at low frequency using ladder open-circuit structure floor, reduce the design size of antenna, the upper end on ladder open-circuit structure floor can further adjust impedance matching using hierarchic structure, and the impedance bandwidth that circular arc corner cut handles the antenna that can further be widened is carried out to the rectangle floor of ladder open-circuit structure floor lower end.This Antenna Operation frequency range is 2.9GHz~13GHz, and design size is 20mm × 20mm, and radiation characteristic and gain characteristic are good, suitable for super broad band radio communication system.
Description
Technical field
The utility model is related to radio antenna technical fields, and in particular to a kind of with ladder open-circuit structure floor
Cupuliform super wide band plane single pole sub antenna, suitable for super broad band radio communication system.
Background technology
With the fast development of wireless communication technique, it is desirable that wireless communication system has wider bandwidth and higher communication
Frequency, original communication frequency domain can not meet demands.Super-broadband tech has the characteristics that large capacity, high-speed, can be useful
In the transmission of closely high-capacity and high-speed rate and radar detection, contradiction and problem that Modern Communication System faces can effectively solve the problem that.
And flat plane antenna have the advantages that it is easy of integration, disclosure satisfy that ultra-wideband communication system miniaturization demand.The antenna of early stage in order to
Realize wider impedance bandwidth, the overall dimensions for leading to antenna are larger, in order to which ultra-wideband antenna is made to need to design convenient for integrating
The antenna that size is smaller and impedance bandwidth is wider, this makes research focus be turned on multi-functional, Miniaturization Design from spread bandwidth.It is super
Broadband planar slot antenna is that a wider gap is opened on floor, and gap structure is generally using approximate ellipsoidal or approximate square
Shape gap, radiation is similar with the design of monopole antenna with feed section, and coplanar wave guide feedback is combined with wide gap, using spy
Different geometrical combination structure, which adjusts impedance matching, can obtain wider impedance bandwidth, also be able to realize by special construction design
Trap characteristic.Super wide band plane single pole sub antenna is relatively simple for structure using relatively broad, can be obtained by certain design
Wider impedance bandwidth and omnidirectional radiation characteristic.Plane single pole sub antenna is generally by radiating element, floor, feeder line and dielectric substrate
Composition, radiating element can be round, oval, rectangle or the assembly of particular geometries, make radiating element surface electric
Stream forms resonance, obtains ultra-wideband response.The size of radiating element determines the lowest operating frequency of antenna, usual radiating element
Full-size is about the corresponding quarter-wave of antenna lowest operating frequency, and radiative unit structure is optimized, can
To reduce the size of antenna and the impedance bandwidth that is widened.Plane single pole sub antenna radiating element, feeder line and the ground of coplanar wave guide feedback
In the same plane, the overall structure that can make antenna is more compact for plate, is easy to integrate with other circuits.Using rectangular aperture energy
Wider impedance bandwidth is accessed, impedance matching, such as non-patent literature 1 can be optimized by adjusting the structure snd size of current feed terminal
Rectangular aperture circle feed, trapezoidal power feed, the rectangular feed ultra-wideband antenna in polygon gap are disclosed, gap structure uses rectangle
Or polygon gap structure, feed element use circle or trapezoidal, by coplanar wave guide feedback, three kinds of antenna impedance bandwidth are all covered
Lid ultra wide band frequency, but design size is 40mm × 30mm, and size is larger.The structure of rational design monopole can be with
Wider impedance bandwidth is obtained, such as non-patent literature 2 discloses a kind of fan-shaped printing ultra-wideband antenna, by fan beam list
Member, rectangle floor and coplanar wave guide feedback line composition, adjusting fan-shaped size makes sector structure top margin to base form different frequencies
The radiation zone of rate, so as to obtain ultra wide band characteristic, the design size of the antenna is 35mm × 30mm.It is cut based on electric current incision principle
Except the part that radiating element electric current is fainter, antenna surface current convergence can be made attached in radiating element lower edge and feeder
Closely, so as to which the impedance bandwidth for the antenna that is widened, such as non-patent literature 3 disclose three kinds of Novel ultra wide band plane single pole sub antennas,
It is micro- to electric current in radiating element and floor by rectangle coplanar wave guide feedback using rectangle, hexagon and pentagon radiating element
Weak part has carried out removal procedure, and the bandwidth and size for making antenna are further improved, and the design size of the antenna is
25mm × 28mm, overall dimensions are still larger.Therefore, there are intrinsic contradictions between the bandwidth of antenna and design size, need
The structure on radiating element and floor is advanced optimized, antenna is made further to reduce design ruler while meeting ultra wide band characteristic
It is very little.
Citation list
Non-patent literature
Non-patent literature 1：Le Yongbo prints the design and research of slot antenna, Harbin Engineering University's master's degree opinion
Text, 2012:21-33.
Non-patent literature 2：Wang Chen, the research of multiband/broadband/circular polarisation printed antenna and array, Xi'an electronic section
Skill University Ph.D. Dissertation, 2013:41-44.
Non-patent literature 3：Wang Lingmin, the research and design of miniaturized planar ultra-wideband antenna, Jilin University's master's degree
Paper, 2015:13-18.
Utility model content
The purpose of this utility model is to provide a kind of cupuliform super wide band plane monopole with ladder open-circuit structure floor
Antenna, ultra wide band, omnidirectional radiation, gain stabilization, size are smaller, convenient for being integrated in radio circuit, meet super wideband wireless and lead to
Believe system requirements.
The technical solution of the utility model is：A kind of cupuliform super wide band plane monopole with ladder open-circuit structure floor
Antenna, by medium substrate (1), the cupuliform feed terminal (2) being printed on medium substrate (1), coplanar waveguide feeder line (3), ladder
Open-circuit structure floor (4) and external coaxial fitting (5) are formed, it is characterised in that：
A. the cupuliform feed terminal (2) is cup shaped metal patch, is composed of a semicircular ring and a sector,
The center of circle O of semicircular ring1On medium substrate (1) central shaft, sector is located at the inside of semicircular ring, fan-shaped center of circle O2Positioned at altogether
Face waveguide feeder (3) upper end center position, fan-shaped both ends are located in the outer circumference of semicircular ring, cupuliform feed terminal (2)
Lower end is connected with coplanar waveguide feeder line (3) upper end；
B. the rectangle conduction band that the coplanar waveguide feeder line (3) is 50 Ω for one section of characteristic impedance, coplanar waveguide feeder line (3)
Upper end be connected with cupuliform feed terminal (2) lower end, the external coaxial fitting in lower end (5) of coplanar waveguide feeder line (3)；
C. the ladder open-circuit structure floor (4) is made of rectangle floor, extension conduction band and hierarchic structure, rectangle floor
Positioned at medium substrate lower end, with O1For the center of circle, it is R to draw one section of radius4Circular arc, to rectangle floor by cupuliform feed terminal (2)
Both ends carry out corner cut processing, and hierarchic structure is located at the upper end of medium substrate, and hierarchic structure is superimposed by three various sizes of rectangles
It forms, extension conduction band is located at medium substrate both sides, and rectangle floor is connected with hierarchic structure by extending conduction band, ladder open circuit knot
Structure floor (4) is symmetrical with coplanar waveguide feeder line (3) both sides；
D. the coaxial fitting (5) is on the central shaft of medium substrate (1) lower end, coaxial fitting (5) respectively with it is coplanar
Waveguide feeder (3) is connected with two lower edges on ladder open-circuit structure floor (4).
The cupuliform feed terminal (2) is cup shaped metal patch, is composed of a semicircular ring and a sector, half
The center of circle O of annulus1On medium substrate (1) central shaft, the center of circle O of semicircular ring1Distance to medium substrate (1) lower edge is
R3+L2, the internal diameter R of semicircular ring2For 4.1mm~4.5mm, the outer diameter R of semicircular ring3For 5.3mm~5.7mm, sector is located at annulus
Inside, fan-shaped center of circle O2Positioned at coplanar waveguide feeder line (3) upper end center position, O2Distance L away from medium substrate lower end2For
3.1mm~3.5mm, fan-shaped both ends are located in the outer circumference of semicircular ring, fan-shaped radius R1It is fan-shaped for 5.4mm~5.9mm
Angle, θ be 115 °~125 °.
The rectangle conduction band length L that characteristic impedance in the coplanar waveguide feeder line (3) is 50 Ω2For 3.1mm~
3.5mm, width W2For 2.2mm~2.6mm.
The ladder open-circuit structure floor (4) is made of rectangle floor, extension conduction band and hierarchic structure, and rectangle floor is wide
Spend W1For 8mm~8.5mm, length L1For 3.2mm~3.6mm, corner cut arc radius R4For 5.7mm~6mm, the long L of extension conduction band3
For 9.8mm~11.1mm, width W3For 0.8mm~1.3mm, hierarchic structure is formed by stacking by three various sizes of rectangles, on
The long L of size of rectangle4For 4.3mm~4.6mm, wide W4For 6.7mm~7.2mm, the long L of size of middle rectangle5For 0.7mm~1mm,
Wide W5For 4.6mm~5mm, the long L of size of lower rectangle6For 0.7mm~1mm, wide W6For 3.4mm~3.8mm.
The effect of the utility model is：The utility model devises the cupuliform feed terminal of structure novel and ladder open circuit
Structural flooring.The lateral dimension of cupuliform feed terminal from top to bottom is gradually reduced, and so as to form the radiation zone of different frequency, is made
Antenna has ultra wide band characteristic, and the frequency band of antenna can be made to high frequency direction exhibition by adjusting the fan-shaped size in cupuliform feed terminal
It is wide.Antenna can be made to generate resonance at low frequency using ladder open-circuit structure floor, reduce the design size of antenna, while also can
The impedance matching property of antenna medium-high frequency is adjusted, the upper end on ladder open-circuit structure floor can further be adjusted using hierarchic structure
Impedance matching, antenna surface electric current collection can be made by carrying out the processing of circular arc corner cut to the rectangle floor of ladder open-circuit structure floor lower end
In near radiating element lower edge and feeder, further be widened antenna impedance bandwidth.The utility model has low cut open
Face, size be small, easy to process, simple in structure, the features such as being easily integrated, and working frequency range is 2.9GHz~13GHz, and design size is
20mm × 20mm, radiation characteristic and gain characteristic are good, suitable for super broad band radio communication system.
Description of the drawings
Fig. 1 is the structure diagram of the utility model embodiment.
Fig. 2 is the utility model embodiment actual measurement reflectance factor S11Curve.
Fig. 3 is E face and H surface radiation directional diagram of the utility model embodiment when frequency is 3GHz.
Fig. 4 is E face and H surface radiation directional diagram of the utility model embodiment when frequency is 6GHz.
Fig. 5 is E face and H surface radiation directional diagram of the utility model embodiment when frequency is 9GHz.
Fig. 6 is E face and H surface radiation directional diagram of the utility model embodiment when frequency is 11GHz.
Fig. 7 is peak gain figure of the utility model embodiment in different frequency point.
Specific embodiment
Specific embodiment of the present utility model is：As shown in Figure 1, a kind of cupuliform with ladder open-circuit structure floor surpasses
Broadband planar monopole antenna, by medium substrate (1), the cupuliform feed terminal (2) being printed on medium substrate (1), coplanar wave
Feeder line (3), ladder open-circuit structure floor (4) and external coaxial fitting (5) is led to form, it is characterised in that：The cupuliform feedback
Source terminal (2) is cup shaped metal patch, is composed of a semicircular ring and a sector, the center of circle O of semicircular ring1Positioned at medium
On substrate (1) central shaft, sector is located at the inside of semicircular ring, fan-shaped center of circle O2Positioned at coplanar waveguide feeder line (3) upper end center
Position, fan-shaped both ends are located in the outer circumference of semicircular ring, lower end and the coplanar waveguide feeder line (3) of cupuliform feed terminal (2)
Upper end is connected；The rectangle conduction band that the coplanar waveguide feeder line (3) is 50 Ω for one section of characteristic impedance, coplanar waveguide feeder line
(3) upper end is connected with cupuliform feed terminal (2) lower end, the external coaxial fitting in lower end (5) of coplanar waveguide feeder line (3)；Institute
The ladder open-circuit structure floor (4) stated is made of rectangle floor, extension conduction band and hierarchic structure, and rectangle floor is located at medium substrate
Lower end, with O1For the center of circle, it is R to draw one section of radius4Circular arc, to rectangle floor by cupuliform feed terminal (2) both ends carry out corner cut
Processing, hierarchic structure are located at the upper end of medium substrate, and hierarchic structure is formed by stacking by three various sizes of rectangles, extend conduction band
Positioned at medium substrate both sides, rectangle floor is connected with hierarchic structure by extending conduction band, and ladder open-circuit structure floor (4) is symmetrical
In coplanar waveguide feeder line (3) both sides；The coaxial fitting (5) is on the central shaft of medium substrate (1) lower end, coaxial fitting
(5) two lower edges respectively with coplanar waveguide feeder line (3) and ladder open-circuit structure floor (4) are connected.
The cupuliform feed terminal (2) is cup shaped metal patch, is composed of a semicircular ring and a sector, half
The center of circle O of annulus1On medium substrate (1) central shaft, the center of circle O of semicircular ring1Distance to medium substrate (1) lower edge is
R3+L2, the internal diameter R of semicircular ring2For 4.1mm~4.5mm, the outer diameter R of semicircular ring3For 5.3mm~5.7mm, sector is located at annulus
Inside, fan-shaped center of circle O2Positioned at coplanar waveguide feeder line (3) upper end center position, O2Distance L away from medium substrate lower end2For
3.1mm~3.5mm, fan-shaped both ends are located in the outer circumference of semicircular ring, fan-shaped radius R1It is fan-shaped for 5.4mm~5.9mm
Angle, θ be 115 °~125 °.
The rectangle conduction band length L that characteristic impedance in the coplanar waveguide feeder line (3) is 50 Ω2For 3.1mm~
3.5mm, width W2For 2.2mm~2.6mm.
The ladder open-circuit structure floor (4) is made of rectangle floor, extension conduction band and hierarchic structure, and rectangle floor is wide
Spend W1For 8mm~8.5mm, length L1For 3.2mm~3.6mm, corner cut arc radius R4For 5.7mm~6mm, the long L of extension conduction band3
For 9.8mm~11.1mm, width W3For 0.8mm~1.3mm, hierarchic structure is formed by stacking by three various sizes of rectangles, on
The long L of size of rectangle4For 4.3mm~4.6mm, wide W4For 6.7mm~7.2mm, the long L of size of middle rectangle5For 0.7mm~1mm,
Wide W5For 4.6mm~5mm, the long L of size of lower rectangle6For 0.7mm~1mm, wide W6For 3.4mm~3.8mm.
Embodiment：Specific manufacturing process is as described in embodiment.Select FR4 epoxy resin medium substrates, permittivity εr
=4.4, thickness h=1.6mm, metal layer thickness 0.04mm, coaxial fitting is using standard sub-miniature A connector.The long L=of medium substrate
20mm, width W=20mm.The lateral dimension of cupuliform feed terminal from top to bottom is gradually reduced, so as to form the spoke of different frequency
Band is penetrated, makes antenna that there is ultra wide band characteristic, the frequency band of antenna can be made to high frequency by adjusting the fan-shaped size in cupuliform feed terminal
Direction is widened.Cupuliform feed terminal is composed of a semicircular ring and a sector, the internal diameter R of semicircular ring2For 4.3mm, half
The outer diameter R of annulus3For 5.5mm, sector is located at the inside of annulus, fan-shaped center of circle O2Positioned at coplanar waveguide feeder line upper end center position
It puts, O2Distance L away from medium substrate bottom end2For 3.3mm, fan-shaped both ends are located on the outside of semicircular ring, fan-shaped radius R1For
5.6mm, fan-shaped angle, θ are 120 °.The rectangle conduction band length L that characteristic impedance in coplanar waveguide feeder line is 50 Ω2For
3.3mm, width W2For 2.5mm, the gap g between rectangle conduction band and floor is 0.45mm.Using ladder open-circuit structure floor energy
Antenna is enough made to generate resonance at low frequency, reduces the design size of antenna, while can also adjust the impedance matching of antenna medium-high frequency
Characteristic, the upper end on ladder open-circuit structure floor can further adjust impedance matching using hierarchic structure, to ladder open-circuit structure
The rectangle floor of floor lower end, which carries out the processing of circular arc corner cut, can make antenna surface current convergence in radiating element lower edge and day
Near line feeder line, the impedance bandwidth for the antenna that is further widened.Ladder open-circuit structure floor is by rectangle floor, extension conduction band and ladder
Structure composition, rectangle floor width W1For 8.3mm, length L1For 3.4mm, corner cut arc radius R4For 5.9mm, it is long to extend conduction band
L3For 10.3mm, width W3For 1.2mm, hierarchic structure is formed by stacking by three various sizes of rectangles, the long L of size of upper rectangle4
For 4.5mm, wide W4For 6.9mm, the long L of size of middle rectangle5For 0.9mm, wide W5For 4.8mm, the long L of size of lower rectangle6For
0.9mm, wide W6For 3.6mm.
Use the reflectance factor of vector network analyzer test antenna, reflectance factor S11With change curve such as Fig. 2 of frequency
It is shown, reflectance factor S11Impedance bandwidth less than -10dB is 2.9GHz~13GHz, and -10dB the impedance bandwidths of antenna are completely covered
Frequency band 3.1GHz~10.6GHz as defined in radio ultra wide band system forms multiple resonance points in frequency band, produces ultra wide band sound
Should, resonance point is located at 3.1GHz, 6.7GHz, 9.4GHz respectively, corresponding resonance peak intensity respectively -26.8dB, -
46.6dB, -34.2dB disclosure satisfy that the work requirements of antenna.
E face of the antenna at tetra- Frequency points of 3GHz, 6GHz, 9GHz, 11GHz and H surface radiation directional diagrams are tested,
The radiation characteristic of antenna is examined, actual measurement directional diagram is as shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6.It can be seen from the figure that aerial radiation side
To figure in the E faces approximation figure of eight, in H faces, low-frequency range directional diagram is approximate circle, the directional diagram approximate ellipse in high-frequency range
Shape.In 11GHz, there is certain distortion in antenna pattern, but is on the whole similar with intermediate frequency, and main cause is antenna
The influence of higher mode and non-equiphase distributed electric field in gap.Therefore, which is omnidirectional in entire frequency range, and radiation is special
Property it is relatively stable, the lobe of antenna is wider, embodies ultra wide band characteristic, and with preferable omni-directional, fully meets ultra-wide
Demand with communication system.
The peak gain curve of antenna different frequency point in frequency band is tested, as shown in fig. 7, test result shows peak value
Gain is 1.89dBi, 6GHz 6.4dBi, 9GHz 7.8dBi, 11GHz 6.1dBi in 3GHz, and peak antenna gain is with frequency
The variation of rate is integrally in rising trend, peak gain the variation of high band occur the reason of downward trend, decline be due to
Antenna radiation pattern occurs in high band caused by distortion, and the variation range of peak gain is 1.88dBi~8dBi, variation range ratio
Relatively rationally, illustrate that antenna has good gain performance in working frequency range.
Claims (4)
1. a kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor, by medium substrate (1), is printed on
Cupuliform feed terminal (2), coplanar waveguide feeder line (3), ladder open-circuit structure floor (4) on medium substrate (1) and external same
Shaft coupling (5) is formed, it is characterised in that：
A. the cupuliform feed terminal (2) is cup shaped metal patch, is composed of a semicircular ring and a sector, semicircle
The center of circle O of ring1On medium substrate (1) central shaft, sector is located at the inside of semicircular ring, fan-shaped center of circle O2Positioned at coplanar wave
Feeder line (3) upper end center position is led, fan-shaped both ends are located in the outer circumference of semicircular ring, the lower end of cupuliform feed terminal (2)
It is connected with coplanar waveguide feeder line (3) upper end；
B. the coplanar waveguide feeder line (3) for one section of characteristic impedance be 50 Ω rectangle conduction band, coplanar waveguide feeder line (3) it is upper
End is connected with cupuliform feed terminal (2) lower end, the external coaxial fitting in lower end (5) of coplanar waveguide feeder line (3)；
C. the ladder open-circuit structure floor (4) is made of rectangle floor, extension conduction band and hierarchic structure, and rectangle floor is located at
Medium substrate lower end, with O1For the center of circle, it is R to draw one section of radius4Circular arc, to rectangle floor lean on cupuliform feed terminal (2) both ends
Corner cut processing is carried out, hierarchic structure is located at the upper end of medium substrate, and hierarchic structure is formed by stacking by three various sizes of rectangles,
Extension conduction band is located at medium substrate both sides, and rectangle floor is connected with hierarchic structure by extending conduction band, ladder open-circuit structure
Plate (4) is symmetrical with coplanar waveguide feeder line (3) both sides；
D. the coaxial fitting (5) is on the central shaft of medium substrate (1) lower end, coaxial fitting (5) respectively with co-planar waveguide
Feeder line (3) is connected with two lower edges on ladder open-circuit structure floor (4).
2. a kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor according to claim 1,
It is characterized in that the cupuliform feed terminal (2) is cup shaped metal patch, it is composed of a semicircular ring and a sector,
The center of circle O of semicircular ring1On medium substrate (1) central shaft, the center of circle O of semicircular ring1To the distance of medium substrate (1) lower edge
For R3+L2, the internal diameter R of semicircular ring2For 4.1mm~4.5mm, the outer diameter R of semicircular ring3For 5.3mm~5.7mm, sector is located at annulus
Inside, fan-shaped center of circle O2Positioned at coplanar waveguide feeder line (3) upper end center position, O2Distance L away from medium substrate lower end2For
3.1mm~3.5mm, fan-shaped both ends are located in the outer circumference of semicircular ring, fan-shaped radius R1It is fan-shaped for 5.4mm~5.9mm
Angle, θ be 115 °~125 °.
3. a kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor according to claim 1,
It is characterized in that the rectangle conduction band length L that the characteristic impedance in the coplanar waveguide feeder line (3) is 50 Ω2For 3.1mm~
3.5mm, width W2For 2.2mm~2.6mm.
4. a kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor according to claim 1,
It is characterized in that the ladder open-circuit structure floor (4) is made of rectangle floor, extension conduction band and hierarchic structure, rectangle floor
Width W1For 8mm~8.5mm, length L1For 3.2mm~3.6mm, corner cut arc radius R4For 5.7mm~6mm, it is long to extend conduction band
L3For 9.8mm~11.1mm, width W3For 0.8mm~1.3mm, hierarchic structure is formed by stacking by three various sizes of rectangles, on
The long L of size of rectangle4For 4.3mm~4.6mm, wide W4For 6.7mm~7.2mm, the long L of size of middle rectangle5For 0.7mm~1mm,
Wide W5For 4.6mm~5mm, the long L of size of lower rectangle6For 0.7mm~1mm, wide W6For 3.4mm~3.8mm.
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| CN201721827701.8U CN207572523U (en) | 2017-12-22 | 2017-12-22 | A kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor |
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| CN201721827701.8U CN207572523U (en) | 2017-12-22 | 2017-12-22 | A kind of cupuliform super wide band plane single pole sub antenna with ladder open-circuit structure floor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959112A (en) * | 2017-12-22 | 2018-04-24 | 吉林医药学院 | A kind of cupulate super wide band plane single pole sub antenna with ladder open-circuit structure floor |
| CN109980347A (en) * | 2019-04-22 | 2019-07-05 | 东华大学 | A kind of monopole microstrip antenna of coplanar wave guide feedback |
| CN110277637A (en) * | 2019-07-19 | 2019-09-24 | 西南交通大学 | A kind of ultra-wideband monopole paster antenna for Partial Discharge Detection |
| CN110416703A (en) * | 2019-06-27 | 2019-11-05 | 东华大学 | A kind of GSM-R system compact monopole printed antenna |
| CN110492236A (en) * | 2019-08-08 | 2019-11-22 | 深圳市航天华拓科技有限公司 | A kind of three trap UWB antennas |
| CN115275619A (en) * | 2022-08-29 | 2022-11-01 | 重庆大学 | Compact structure's miniature circular polarized antenna of semicircle |
-
2017
- 2017-12-22 CN CN201721827701.8U patent/CN207572523U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107959112A (en) * | 2017-12-22 | 2018-04-24 | 吉林医药学院 | A kind of cupulate super wide band plane single pole sub antenna with ladder open-circuit structure floor |
| CN109980347A (en) * | 2019-04-22 | 2019-07-05 | 东华大学 | A kind of monopole microstrip antenna of coplanar wave guide feedback |
| CN110416703A (en) * | 2019-06-27 | 2019-11-05 | 东华大学 | A kind of GSM-R system compact monopole printed antenna |
| CN110277637A (en) * | 2019-07-19 | 2019-09-24 | 西南交通大学 | A kind of ultra-wideband monopole paster antenna for Partial Discharge Detection |
| CN110492236A (en) * | 2019-08-08 | 2019-11-22 | 深圳市航天华拓科技有限公司 | A kind of three trap UWB antennas |
| CN115275619A (en) * | 2022-08-29 | 2022-11-01 | 重庆大学 | Compact structure's miniature circular polarized antenna of semicircle |
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