CN109378577A - A kind of miniaturization broadband cross dipole antenna - Google Patents
A kind of miniaturization broadband cross dipole antenna Download PDFInfo
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- CN109378577A CN109378577A CN201810893647.XA CN201810893647A CN109378577A CN 109378577 A CN109378577 A CN 109378577A CN 201810893647 A CN201810893647 A CN 201810893647A CN 109378577 A CN109378577 A CN 109378577A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
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Abstract
The invention proposes a kind of miniaturization broadband cross dipole antennas, further reduce the size of antenna in the case where meeting antenna broadband bandwidth, and antenna structure includes radiating element, first medium substrate, second medium substrate, coaxial line and metal floor；Radiating element includes four parasitic patch and metal patch for being printed on first medium upper surface of base plate, and is printed on the metal patch of lower surface；Fixation is supported by four between first medium substrate and second medium substrate；Metal floor forms and is printed on the lower surface of second medium substrate by a sheet metal identical with second medium substrate size, and one end of coaxial line is connect with floor, and the other end is connect with radiating element.
Description
Technical field
The invention belongs to antenna technical fields, are related to a kind of miniaturization broadband cross dipole antenna, can be used for S wave
The wireless communication of section and all kinds of systems for needing circular polarized antenna.
Background technique
Antenna can be divided into linear polarization, circular polarisation and three kinds of elliptic polarization according to polarization characteristic, and circular polarized antenna is relative to line
Poliarizing antenna has some significant advantages, and such as: 1) rotation direction of circularly polarised wave is mutually orthogonal, and circular polarized antenna can only receive phase
With the circularly polarised wave of rotation direction；2) any polarized wave can be made of left-handed and a dextrorotation a circularly polarised wave, therefore be appointed
Polarized antenna of anticipating can receive the radiated wave of circular polarized antenna, and the radiated wave of any poliarizing antenna can be by circular polarisation day
Line is received；3) polarization of circularly polarised wave has rotatory.Therefore circular polarisation electromagnetic wave can effectively reduce the shadow of multipath reflection
It rings, inhibit depolarisation effect caused by the weathers such as misty rain, circular polarized antenna is widely used in various wireless communication systems, broadcast
In the radio arts such as television field and global location.
Realize circular polarized antenna basic principle be play antenna excitation two spaces are orthogonal, line polarization wave of constant amplitude.Root
Principle accordingly, domestic and international experts and scholars propose many methods with regard to the design of circular polarized antenna, can be generalized into following three kinds
Form: directly method -- the physical structure of antenna itself can radiate the helical antenna and microstrip antenna of circularly polarised wave for generation；Load
Line circular polarisation conversion cover -- the antenna house for capableing of switching polarization form is placed in the radiation direction of linear polarized antenna；Two-wire
Polarization orthogonal advocate approach -- and phase difference 90 ° of line polarization wave equal in plane space feed-in amplitude.Cross dipole antenna is then
Belong to the third dual-linear polarization quadrature excitation method, it is usually to be made of two orthogonal dipole antennas, by two in sky
Between upper mutually orthogonal amplitude is equal, 90 ° of phase phase difference of electric current or magnetic current form circular polarization radiation, realize 90 ° of phase
Potential difference can be realized by using duplex feeding structure or SF single feed from phase-shift structure, since this method is set in linear polarized antenna
It is evolved in meter, while antenna has good directionality and stablizes symmetrical antenna pattern, so in circular polarized antenna
It is very popular in design.
With the development of antenna technology, actual demand also proposes new challenge to antenna.Such as it is modern without linear system
System increasingly tends to the technology in terms of multi-functional, large capacity, ultra wide band/multiband, and mutiple antennas is used on a platform
Realize that, to not co polar signal, different frequency range signal sends and receives, therefore, the development of antenna will be to broadband, miniaturization
Equal directions progress, Recent study personnel have also done certain research in this respect, the case where reducing antenna size as far as possible
The lower broadening beamwidth of antenna, 2017, Wu Dan et al. was sent out in Progress In Electromagnetics Research C
One entitled " Wideband Circularly Polarized Cross Bowtie Dipole Antenna with of table
Axial-Ratio Bandwidth Enhancement " paper, which includes metallic reflection plate, be located at metallic reflection plate
The medium substrate of top is printed on the right angled triangle crossed dipoles of medium substrate upper and lower surface and is centered around upper surface friendship
Pitch the parasitic element around dipole.Although the antenna utilizes the band of the cross dipole minor structure broadening antenna of right angled triangle
Width, but have a defect that the size of antenna is still larger.
Summary of the invention
It is an object of the invention to overcome the problems of the above-mentioned prior art, a kind of miniaturization broadband intersection is proposed
Dipole antenna, it is intended in the case where meeting antenna broadband bandwidth, further reduce the size of antenna.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of miniaturization broadband cross dipole antenna, including radiating element 1, first medium substrate 2 and second medium
Substrate 3, the first medium substrate 2 are fixed on the top of second medium substrate 3；The radiating element 1 includes being printed on first
Four parasitic patch 11 of 2 upper surface of medium substrate, and by being printed on 2 upper and lower surfaces of first medium substrate, and close
In a pair of metal patch 12 for differing 180 ° of the centre normal rotational symmetry of the first medium substrate 2；The metal patch 12
Including two dipole arms 122 in 90 ° of arrangements that head end is connected by annulus phase-shifter 121, one of dipole arm 122
Head end be provided with fed patch 123；The length of the annulus phase-shifter 121 is 1/4 wavelength, and the center of circle of annulus is located at first
In the centre normal of medium substrate 2；The lower surface of the second medium substrate 3 is printed with metal floor 4, the metal floor 4 with
Coaxial line 5 is connected between radiating element 1.
The dipole arm 122 uses semicircle ring structure, and end is arc-shaped；Four parasitic patch 11 difference
Positioned at the spatial position that the adjacent dipole arm 122 of the metal patch 12 of the metal patch 12 and upper surface of lower surface is formed, and
The 90 ° of rotational symmetry of centre normal of four parasitic patch 11 about first medium substrate 2.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the metal patch 12 of the upper surface, two dipole
Sub- arm 122 is not contacted with the parasitic patch 11 between two dipole arms 122.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the annulus phase-shifter 121, the center of circle of annulus is to occasionally
The distance d2 in the extremely sub- 122 outer circle center of circle of arm is less than the distance d1 to the inner circle center of circle.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the radius of inner circle and the radius size of end arc-shaped
It is equal, and the center of circle in the center of circle of inner circle, the center of circle of outer circle and end arc-shaped is respectively positioned on across 121 center of circle of annulus phase-shifter
On straight line.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the first medium substrate 2 are provided centrally with and are used for
The metallization VIA that coaxial line 5 passes through.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the coaxial line 5, the inner core of one end and upper surface
Fed patch 123 is connected, and crust is connected with the fed patch 123 of lower surface, and the crust of the other end is connect with metal floor 4.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the fed patch 123, by a center of circle and annulus phase
The semicircular patch and a rectangular patch for moving the coincidence of 121 center of circle of device, which are connected, to be formed.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the first medium substrate 2 are by four support columns
6 are fixed on 3 top of second medium substrate.
A kind of above-mentioned miniaturization broadband cross dipole antenna, the first medium substrate 2 use relative dielectric constant
For 4.4 round plate, the second medium substrate 3 use relative dielectric constant for 4.4 square plate.
Compared with the prior art, the invention has the following advantages:
1, of the invention that the semi-circular shape dipole that end is arc-shaped is printed with due to the upper and lower surface in medium substrate
Arm, the structure of Curved increase the current path of antenna to increase the electrical length of radiating element, and pass through 90 ° of annulus
Phase-shifter realizes the circular polarisation of antenna.Compared with prior art, antenna impedance bandwidth and circular polarisation bandwidth are being had substantially no effect on
In the case where further reduce the size of antenna.
2, the present invention is since in the printing of the upper surface of medium substrate, there are four parasitic patch, the metal for being located at lower surface is pasted
The spatial position that the adjacent dipole arm of piece and the metal patch of upper surface is formed, the centre normal about first medium substrate
Two adjacent dipole arm slot-coupleds of 90 ° of rotational symmetry, it and crossed dipoles motivates additional circular polarization pattern, exhibition
The wide impedance bandwidth and axial ratio bandwidth of antenna.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of radiating element of the present invention；
Fig. 3 is the structural schematic diagram of metal patch in Fig. 2；
Fig. 4 is the position view of Fig. 2 metal patch and parasitic patch at the middle and upper levels；
Fig. 5 is reflection coefficient chart of the invention；
Fig. 6 is that axis of the invention compares curve graph；
Fig. 7 is actual gain directivity curve figure of the invention；
Fig. 8 is antenna pattern of the present invention in Phi=0 ° of face；
Fig. 9 is antenna pattern of the present invention in Phi=90 ° of face.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the invention will be further described:
Referring to Fig.1, a kind of miniaturization broadband cross dipole antenna includes radiating element 1, first medium substrate 2,
Second medium substrate 3, metal floor 4, coaxial line 5 and support column 6, wherein coaxial line 5 is used to be fed to radiating element 1,
One end is connect with floor 4, and the other end is connect with radiating element 1；First medium substrate 2 is fixed on the using four hexagonal nylon columns
The top of second medium substrate 3, the dielectric constant and air of nylon column are close, and the influence to antenna can be ignored, and second is situated between
The lower surface of matter substrate 3 is printed with metal floor 4；First medium substrate 2 uses relative dielectric constant for ε1=4.4, diameter Ls
The round plate of=56mm, thickness Hs=3mm；Second medium substrate 3 uses relative dielectric constant for ε2=4.4, side length L=
The square plate of 57mm, thickness Hg=2mm；Height of the lower surface of first medium substrate 2 apart from floor is H=30mm.
Referring to Fig. 2, the radiating element 1 includes four 11 Hes of parasitic patch for being printed on 2 upper surface of first medium substrate
Metal patch 12 and the metal patch of lower surface 12, the metal patch 12 include that head end is connected by annulus phase-shifter 121
Two dipole arms 122 in 90 ° of arrangements, the length of annulus phase-shifter 121 is 1/4 wavelength, for realizing two dipoles
90 ° of phase difference is to realize the circular polarization characteristics of antenna, and the center of circle of annulus phase-shifter 121 is located at first and is situated between arm 122
In the centre normal of matter substrate 2；The metal patch 12 of the upper surface and the metal patch 12 of lower surface are about first medium base
The centre normal of plate 2 is symmetrical, and differs 180 °, forms cross dipole minor structure；The dipole arm 122 uses semicircular ring knot
Structure, end are arc-shaped, and the head end of one of dipole arm 122 is provided with fed patch 123, on first medium substrate 2
The fed patch 123 on surface is connected with the inner core of coaxial line 5, and the fed patch 123 of lower surface is connected with the crust of coaxial line 5；
Four parasitic patch 11 are located at the adjacent dipole of the metal patch 12 of lower surface and the metal patch 12 of upper surface
The spatial position that arm 122 is formed, and the 90 ° of rotational symmetry of centre normal of four parasitic patch 11 about first medium substrate 2.
Referring to Fig. 3, the radius r1=5.4mm of annulus phase-shifter 121, ring width wr1=1.4mm, in fed patch 123
The center of circle of semicircular patch is overlapped with the center of circle of annulus phase-shifter 121, radius r5=2.6mm, the length L1 of rectangular patch
=2.95mm.The center of circle in the center of circle of inner circle, the center of circle of outer circle and end arc-shaped is respectively positioned on across annulus in dipole arm 122
On the straight line in 121 center of circle of phase-shifter, distance d1=16.825mm of the inner circle center of circle to 121 center of circle of annulus phase-shifter, radius r4=
3.375mm, distance d2=14.95mm of the outer circle center of circle to 121 center of circle of annulus phase-shifter, radius r3=12mm, end arc-shaped
Distance d3=23.575mm of the center of circle to 121 center of circle of annulus phase-shifter, radius r2=r4=3.375mm, dipole arm 122 adopts
Current path is increased to a certain extent with this Curved structure, facilitates the size for reducing antenna.
Referring to Fig. 4, the exradius pr1=16.4mm of parasitic patch 11, inner circle radius pr2=5.6mm.Parasitic patch 11
With the width ws=0.2mm in 122 gaps of dipole arm, gap herein can be equivalent to capacitor and add the equivalent of entire antenna
In impedance, the phase of two quadrature components of impedance matching and circular polarisation to antenna has an impact.
The metal patch 12 of 2 upper surface of first medium substrate of the invention and the metal patch 12 of lower surface are integrally formed
One sequence rotational structure, 5 inner core of coaxial line is connected with the fed patch 123 of 2 upper surface of first medium substrate, by coaxial line 5
The electric current of inner core output flows directly into a dipole arm 122 of metal patch 12, another portion by 123 a part of fed patch
Divide another dipole arm 122 that metal patch 12 is flowed by annulus phase-shifter 121, so that the electric current in two-arm has 90 °
Phase difference.The crust of coaxial line 5 is connected with the fed patch 123 of 2 lower surface of first medium substrate, lower surface metal patch 12
Current distribution it is identical as the current distribution of metal patch 12 of upper surface, since 5 inner core of coaxial line is differed with sheath current
180 °, the current and phase difference of four dipole arms 122 of cross dipole minor structure is followed successively by 0 °, 90 °, 180 °, 270 °, is formed
Sequence rotating feed structure, to motivate circular polarisation mould.And dipole arm 122 then increases electric current using the structure of Curved
Path increases the electrical length of radiating element, effectively reduces the size of antenna.The parasitic patch 11 is about first medium base
90 ° of rotational symmetry of centre normal of plate 2, and it is parallel to dipole structure, additional circular polarisation is motivated by aperture-coupled
Mode, both circular polarization patterns of the antenna structure appropriate combination realize wide circular polarization characteristics, broadened impedance bandwidth and
Axial ratio bandwidth.
Below in conjunction with emulation experiment, technical effect of the invention is described further:
1, simulated conditions and content:
1.1 using business simulation software HFSS-16.1 to the reflection coefficient of antenna in above-described embodiment and axis than curve into
Row simulation calculation, as a result as shown in Figure 6, Figure 7.
1.2 carry out emulation meter using gain pattern of the business simulation software HFSS-16.1 to antenna in above-described embodiment
It calculates, as a result as shown in Figure 8.
1.3 utilize business simulation software HFSS-16.1 to antenna in above-described embodiment at Phi=0 ° and Phi=90 °
Radiation direction carries out simulation calculation, as a result as shown in Figure 8, Figure 9.
2, analysis of simulation result:
Referring to Fig. 6, with S11≤ -10dB is standard, and reflection coefficient frequency range is 2.04-4.24GHz, phase in embodiment
It is 70% to bandwidth, compared with prior art, the impedance bandwidth of the antenna is obviously broadened.
Referring to Fig. 7,3dB is less than as standard using axis ratio, 3dB axis is 2.42-3.71GHz, opposite band than frequency band in embodiment
Width is 42.1%, and compared with prior art, which further reduces day in the case where axial ratio bandwidth is held essentially constant
The size of line.
Referring to Fig. 8, the maximum value that gain pattern of the antenna when centre frequency is 3GHz can be seen that antenna gain is
6.53dBi, half-power beam width are 104 °.
Referring to Fig. 8, antenna is 3GHz in centre frequency, in Phi=0 ° of plane, the maximum value of right-handed circular polarization directional diagram
For 5.38dBi, the radiation characteristic of right-handed circular polarization and left-hand circular polarization differs 22dBi, it can be seen that left-right-hand circular polarization
Radiation characteristic differ greatly, the right-handed circular polarization working condition of the antenna is good.
Referring to Fig. 9, antenna is 3GHz in centre frequency, in Phi=90 ° of plane, the maximum of right-handed circular polarization directional diagram
Value is 5.38dBi, the radiation characteristic difference 22dBi of right-handed circular polarization and left-hand circular polarization, it can be seen that left-right rotary entelechy
The radiation characteristic of change differs greatly, and the right-handed circular polarization working condition of the antenna is good.
Above simulation result explanation, compared with prior art, the dipole arm structure of inventive antenna and in medium base
The parasitic patch of plate upper surface addition realizes the miniaturization of antenna in the case where guaranteeing day line width axis ratio characteristic, improves existing
There is the deficiency of technology.
It is only one embodiment of the present of invention, does not constitute any limitation of the invention, it is clear that for the profession of this field
For personnel, after having understood the content of present invention and principle, all may without departing substantially from the principle of the invention, structure, into
The various modifications and variations of row in form and details, but these modifications and variations based on inventive concept are still of the invention
Within scope of protection of the claims.
Claims (9)
1. a kind of miniaturization broadband cross dipole antenna, including radiating element (1), first medium substrate (2) and second are situated between
Matter substrate (3), the first medium substrate (2) are fixed on the top of second medium substrate (3)；The radiating element (1) includes
Four parasitic patch (11) of first medium substrate (2) upper surface are printed on, and by being printed on table on first medium substrate (2)
Face and lower surface, and a pair of dipole for differing 180 ° of the centre normal rotational symmetry about the first medium substrate (2)
(12)；The dipole (12) includes two dipole arms in 90 ° of arrangements that head end is connected by annulus phase-shifter (121)
(122), the head end of one of dipole arm is provided with fed patch (123)；The length of the annulus phase-shifter (121) is 1/
The center of circle of 4 wavelength, annulus is located in the centre normal of first medium substrate (2)；The lower surface of the second medium substrate (3)
Metal floor (4) are printed with, are connected with coaxial line (5) between the metal floor (4) and radiating element (1)；
It is characterized by:
The dipole arm (122) uses semicircle ring structure, and end is arc-shaped；Four parasitic patch (11) difference position
In the spatial position that the adjacent dipole arm of the dipole (12) of the dipole (12) and upper surface of lower surface is formed, and this four
The 90 ° of rotational symmetry of centre normal of parasitic patch (11) about first medium substrate (2).
2. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: the upper surface
Dipole (12), two dipole arm do not contact with the parasitic patch (11) between two dipole arms.
3. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: the annulus phase
It moves device (121), the distance d2 in the center of circle to dipole arm (122) outer circle center of circle of annulus is less than the distance d1 to the inner circle center of circle.
4. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: the dipole
The radius of arm (122), inner circle is equal with the radius size of end arc-shaped, and the center of circle of inner circle, the center of circle of outer circle and end
The center of circle of end arc-shaped is respectively positioned on the straight line in annulus phase-shifter (121) center of circle.
5. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: described first is situated between
Matter substrate (2) is provided centrally with the metallization VIA passed through for coaxial line (5).
6. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: the coaxial line
(5), the inner core of one end is connected with the fed patch (123) of upper surface, and crust is connected with the fed patch (123) of lower surface,
The crust of the other end is connect with metal floor (4).
7. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: the feed patch
Piece (123), the semicircular patch be overlapped by a center of circle with annulus phase-shifter (121) center of circle and rectangular patch be connected and
At.
8. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: described first is situated between
Matter substrate (2) is fixed on above second medium substrate (3) by four support columns (6).
9. a kind of miniaturization broadband cross dipole antenna according to claim 1, it is characterised in that: described first is situated between
Matter substrate (2) uses relative dielectric constant for 4.4 round plate, and the second medium substrate (3) is using relative dielectric constant
For 4.4 square plate.
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| CN201810893647.XA CN109378577A (en) | 2018-08-08 | 2018-08-08 | A kind of miniaturization broadband cross dipole antenna |
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| CN201810893647.XA CN109378577A (en) | 2018-08-08 | 2018-08-08 | A kind of miniaturization broadband cross dipole antenna |
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Cited By (13)
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| CN109818139A (en) * | 2019-03-29 | 2019-05-28 | 华南理工大学 | A kind of circular polarisation crossed dipoles GPS navigation antenna |
| CN112201934A (en) * | 2020-09-23 | 2021-01-08 | 华中科技大学 | Dual-frequency antenna and antenna array |
| CN112421236A (en) * | 2020-10-14 | 2021-02-26 | 西安电子科技大学 | Coplanar antenna capable of directionally radiating along surface of carrier |
| CN112952367A (en) * | 2021-01-29 | 2021-06-11 | 中国工程物理研究院应用电子学研究所 | Novel ultra-wideband circularly polarized back cavity crossed dipole antenna |
| CN113937473A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Small circularly polarized Vivaldi antenna, control method and mobile communication system |
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| CN115693119A (en) * | 2022-10-28 | 2023-02-03 | 荣耀终端有限公司 | Terminal antenna and electronic equipment |
| CN116435779A (en) * | 2023-06-08 | 2023-07-14 | 深圳大学 | Ultra-wideband circularly polarized antenna |
| CN117239426A (en) * | 2023-11-07 | 2023-12-15 | 微网优联科技(成都)有限公司 | Circularly polarized satellite antenna based on magnetic electric dipole |
| CN117317575A (en) * | 2023-11-28 | 2023-12-29 | 福建福大北斗通信科技有限公司 | Cross dipole antenna with low axial ratio and wide frequency band |
| CN117791156A (en) * | 2024-02-26 | 2024-03-29 | 安徽大学 | Small circularly polarized antenna and aircraft wireless communication method |
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Cited By (22)
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| CN109818139B (en) * | 2019-03-29 | 2023-11-10 | 华南理工大学 | Circularly polarized cross dipole GPS navigation antenna |
| CN109818139A (en) * | 2019-03-29 | 2019-05-28 | 华南理工大学 | A kind of circular polarisation crossed dipoles GPS navigation antenna |
| CN112201934A (en) * | 2020-09-23 | 2021-01-08 | 华中科技大学 | Dual-frequency antenna and antenna array |
| CN112201934B (en) * | 2020-09-23 | 2021-10-08 | 华中科技大学 | Dual-frequency antenna and antenna array |
| CN112421236A (en) * | 2020-10-14 | 2021-02-26 | 西安电子科技大学 | Coplanar antenna capable of directionally radiating along surface of carrier |
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| CN112952367A (en) * | 2021-01-29 | 2021-06-11 | 中国工程物理研究院应用电子学研究所 | Novel ultra-wideband circularly polarized back cavity crossed dipole antenna |
| WO2022227128A1 (en) * | 2021-04-28 | 2022-11-03 | 领翌技术(横琴)有限公司 | Circularly polarized antenna |
| CN113937473A (en) * | 2021-09-11 | 2022-01-14 | 中国人民武装警察部队工程大学 | Small circularly polarized Vivaldi antenna, control method and mobile communication system |
| CN113937473B (en) * | 2021-09-11 | 2024-03-29 | 中国人民武装警察部队工程大学 | Small circularly polarized Vivaldi antenna, control method and mobile communication system |
| CN114824761A (en) * | 2022-05-16 | 2022-07-29 | Oppo广东移动通信有限公司 | Antenna device and electronic apparatus |
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| CN115693119B (en) * | 2022-10-28 | 2023-11-14 | 荣耀终端有限公司 | Terminal antenna and electronic equipment |
| CN116435779A (en) * | 2023-06-08 | 2023-07-14 | 深圳大学 | Ultra-wideband circularly polarized antenna |
| CN116435779B (en) * | 2023-06-08 | 2023-08-08 | 深圳大学 | Ultra-wideband circularly polarized antenna |
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| CN117239426A (en) * | 2023-11-07 | 2023-12-15 | 微网优联科技(成都)有限公司 | Circularly polarized satellite antenna based on magnetic electric dipole |
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