CN107146942A - Double-frequency quadrifilar helix antenna applied to satellite navigation - Google Patents
Double-frequency quadrifilar helix antenna applied to satellite navigation Download PDFInfo
- Publication number
- CN107146942A CN107146942A CN201710225848.8A CN201710225848A CN107146942A CN 107146942 A CN107146942 A CN 107146942A CN 201710225848 A CN201710225848 A CN 201710225848A CN 107146942 A CN107146942 A CN 107146942A
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- Prior art keywords
- line
- microstrip line
- double
- coupling
- coupling line
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
- H01Q1/288—Satellite antennas
-
- 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
-
- 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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Waveguide Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The present invention discloses a kind of double-frequency quadrifilar helix antenna applied to satellite navigation, including pcb board, cylindric dielectric and the antenna metal for being arranged on pcb board lower surface, the side wall of cylindric dielectric is spirally around four monopole radiation arms of printing, the end of each monopole radiation arm sets metal copper post, the bottom of cylindric dielectric is fixed on pcb board by four metal copper posts, and each monopole radiation arm includes the first coupling line, the second coupling line, the first microstrip line and the second microstrip line.The connection end of first coupling line connects one end of the first microstrip line, and the other end of the first microstrip line connects a metal copper post；The connection end of second coupling line connects one end of the second microstrip line, and the other end of the second microstrip line connects the junction of the first microstrip line and the first coupling line, and four metal copper posts are equidistant to be symmetricly set on the lower circumference of cylindric dielectric.Antenna of the present invention has good pattern characteristics, circular polarization characteristics and dual frequency characteristics.
Description
Technical field
The present invention relates to technical field of satellite communication, more particularly to a kind of arm spiral day of double frequency four applied to satellite navigation
Line.
Background technology
Compatibility operation will be realized between following satellite navigation system, a certain degree of resource-sharing is realized, and set up
Joint navigation system is played, navigation accuracy is further improved.Compared to single satellite navigation system, in the space of areal can
See that number of satellite increases, thus the multisystem compatible navigation system of integrated multiple satellite navigation systems can make positioning precision, can
Greatly improved by property, security, continuity, efficiency, this causes multisystem compatible navigation to turn into becoming for Future Satellite navigation development
Gesture.
Antenna system very important part in being constituted as satellite system, it is possible to achieve the phase between satellite and ground
Mutual communication, and ground, in face of transmission of remote control and telemetry command of satellite etc., therefore, the stability and reliability of antenna system are very
Determine whether satellite can the predetermined task of successful execution in big degree, it can be seen that the quality of antenna performance is to navigation system
Performance has tremendous influence.So the design of satellite antenna also turns into a vital research topic.Four arm spirals day
Though line has bulky unfavorable factor compared with microstrip antenna, it has preferable directionality, wide-angle circular polarization characteristics.Institute
So that the research of four-arm spiral antenna is of increasing concern, is especially applicable to four arm spirals in the compatible satellite navigation of multisystem
Antenna is extremely heated and held in both hands.Frequency multiplexing technique is realized for existing four-arm spiral antenna, it is necessary to using two or more resonance in difference
The four-arm spiral antenna of frequency is mutually stacked or inside and outside combination places to reach the purpose of multifrequency.
The content of the invention
The main object of the present invention provides a kind of double-frequency quadrifilar helix antenna applied to satellite navigation, it is intended to solve existing
The dual frequency characteristics of four-arm spiral antenna in technology and the not good technical problem of circular polarization characteristics.
To achieve the above object, the invention provides a kind of double-frequency quadrifilar helix antenna applied to satellite navigation, including
Pcb board, cylindric dielectric and antenna metal, it is arranged on the lower surface of pcb board, cylindric Jie the antenna metal
The wall outer surface of plastid is spirally around four monopole radiation arms are printed with, and the end of each monopole radiation arm is set
There is a metal copper post, the bottom of the cylindric dielectric is fixed on pcb board by four metal copper posts, each monopole
Sub- radiation arm includes the first coupling line, the second coupling line, the first microstrip line and the second microstrip line, wherein：
One end that the connection end of first coupling line is connected to the first microstrip line makes the first coupling line and the first microstrip line
The shape of L-shaped or quasi- L-shaped is formed, the other end of first microstrip line connects a metal copper post；
One end that the connection end of second coupling line is connected to the second microstrip line makes the second coupling line and the second microstrip line
The shape of L-shaped or quasi- L-shaped is formed, the other end of second microstrip line is connected to the connection of the first microstrip line and the first coupling line
Place；
Four metal copper posts are equidistant to be symmetricly set on the lower circumference of cylindric dielectric, four metal copper posts
As four input ports of double-frequency quadrifilar helix antenna, the signal amplitude of each input port input is identical and phase phase successively
Poor 90 degree；
First coupling line and the second coupling line are the metal copper sheet of width gradual change formula strip structure, described first
Microstrip line and the metal copper sheet that the second microstrip line is rectangular configuration.
It is preferred that, the length of first coupling line is La=147.8mm, the width W of the free end of the first coupling linea=
15mm, the width of the connection end of the first coupling line is equal to the width of the first microstrip line, is Wc=10mm.
It is preferred that, the length of second coupling line is Lb=101mm, the width W of the free end of the second coupling lineb=
15mm, the width of the connection end of the second coupling line is equal to the width of the second microstrip line, is Wd=5mm.
It is preferred that, the length of first microstrip line is Lc=23mm, the width of the first microstrip line is Wc=10mm, second
The length of microstrip line is Ld=27.5mm, the width of the second microstrip line is Wd=5mm.
It is preferred that, the metal copper sheet for constituting the first coupling line, the second coupling line, the first microstrip line and the second microstrip line
Thickness be 35um.
It is preferred that, the circular cylinder radius of the cylindric dielectric is 7~10cm.It is preferred that, it is to set the antenna metal
Put the deposited copper metal piece in pcb board lower surface.
It is preferred that, pcb board corrosion at the position for connecting four metal copper posts has four circular holes to feed, four
Metal copper post penetrates lower surface to pcb board not with the antenna metal by four circular holes from the upper surface of pcb board
Contact.
It is preferred that, the relative dielectric constant of the pcb board, thickness of slab is 0.762mm.
It is preferred that, the cylindric dielectric uses sheet material type to be made up of the dielectric-slab of FR4 types, relative dielectric constant
2.2, thickness is 0.2mm.
Compared to prior art, the double-frequency quadrifilar helix antenna of the present invention applied to satellite navigation is situated between using cylindric
The sidewall surfaces of plastid set four monopole radiation arms, with good antenna pattern characteristic and circular polarization characteristics, and
Antenna gain can be improved；Meanwhile, using the coupling line of two Length discrepancies as monopole radiation arm, designer is by changing two
The Design of length of root coupling line can make antenna while being operated in two different working frequencies, so as to realize the double frequency of antenna
Characteristic.
Brief description of the drawings
Fig. 1 is stereochemical structure signal of the present invention applied to the double-frequency quadrifilar helix antenna preferred embodiment of satellite navigation
Figure；
Fig. 2 is planar junction of the present invention applied to a monopole radiation arm in the double-frequency quadrifilar helix antenna of satellite navigation
Structure schematic diagram；
Fig. 3 is plane meter of the present invention applied to a monopole radiation arm in the double-frequency quadrifilar helix antenna of satellite navigation
Very little schematic diagram；
Fig. 4 is corresponding when being brachium change of the present invention applied to the radiation arm of the double-frequency quadrifilar helix antenna of satellite navigation
The schematic diagram of reflectance factor first；
Fig. 5 is corresponding when being brachium change of the present invention applied to the radiation arm of the double-frequency quadrifilar helix antenna of satellite navigation
The schematic diagram of reflectance factor second.
The object of the invention is realized, functional characteristics and advantage will will in the lump join in embodiment part in conjunction with the embodiments
It is described further according to accompanying drawing.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that above-mentioned purpose is taken, below in conjunction with accompanying drawing
And preferred embodiment, embodiment, structure, feature and its effect to the present invention are described in detail.It should be appreciated that this
The specific embodiment of place description is not intended to limit the present invention only to explain the present invention.
Shown in reference picture 1, Fig. 1 is the present invention applied to the vertical of the double-frequency quadrifilar helix antenna preferred embodiment of satellite navigation
Body structural representation.In the present embodiment, the double-frequency quadrifilar helix antenna with including pcb board 1, antenna metal 10 and cylindric
Dielectric 20, is arranged on the lower surface of pcb board 1 antenna metal, and the wall outer surface of the cylindric dielectric 20 is set
Be equipped with four monopole radiation arms 30 (only shown in Fig. 1 cylindric dielectric 20 above two monopole radiation arms 30, behind two
It is individual to fail to show).The end of each monopole radiation arm 30 is provided with a metal copper post 40, the cylindric dielectric 20
Bottom be fixed on by four metal copper posts 40 on pcb board 1.In the present embodiment, four metal copper posts 40 are equidistant symmetrical
It is arranged on the lower circumference of cylindric dielectric 20 and is fixed on pcb board 1.The antenna metal 10 to be arranged on PCB
The deposited copper metal piece of the lower surface of plate 1, the corrosion at the position for connecting four metal copper posts 40 of pcb board 1 has four circular holes 41 to be used to
Feed, the radius of circular hole 41 is more than the radius of metal copper post 40, and four metal copper posts 40 are by four circular holes 41 from pcb board 1
Upper surface is penetrated to the lower surface of pcb board 1,10 is not contacted with the antenna metal.
In the present embodiment, pcb board 1 uses specific sheet material type for RO4350B, wherein relative dielectric constant 3.48,
Thickness of slab is 0.762mm.The cylindric dielectric 20 is made up of soft frivolous dielectric-slab, and specific sheet material type is FR4 types
Dielectric-slab, wherein relative dielectric constant 2.2, thickness is 0.2mm, and dielectric-slab is bent to hollow cylindric dielectric 20,
Four monopole radiation arms 30 spirally surround and are printed on the wall outer surface of cylindric dielectric 20.The cylindrical shape
The circular cylinder radius of dielectric 20 is preferably 7~10cm, plastic foam is filled with the cylindric dielectric 20, for fixing and propping up
Antenna is supportted, and antenna gain can be improved.Four metal copper posts 40 are used as four input ports of four-arm spiral antenna, four metals
Copper post 40 is equidistant to be symmetricly set on the lower circumference of cylindric dielectric 20, the signal amplitude of each port input it is identical and
Phase differs 90 degree successively, so with good antenna pattern characteristic and circular polarization characteristics, can effectively antagonize signal many
The weak effect in footpath.
Shown in reference picture 2, Fig. 2 is the present invention applied to a monopole spoke in the double-frequency quadrifilar helix antenna of satellite navigation
Penetrate the planar structure schematic diagram of arm.In the present embodiment, each monopole radiation arm 30 includes the first coupling line 31, the second coupling
Zygonema 32, the first microstrip line 33 and the second microstrip line 34.Wherein, the connection end of the first coupling line 31 is connected to the first microstrip line 33
One end make the shape of the first coupling line 31 and the first microstrip line 33 formation L-shaped or quasi- L-shaped, the connection end of the second coupling line 32 connects
Being connected to one end of the second microstrip line 34 makes the shape of the second coupling line 32 and the second microstrip line 34 formation L-shaped or quasi- L-shaped, and second is micro-
The other end with line 34 is connected to the junction of the first microstrip line 33 and the first coupling line 31.Quasi- L-shaped defined in the present embodiment
To be similar to L-shaped on the whole, for example, when the first coupling line 31 and the first microstrip line 33 form quasi- L-shape, folder between the two
Angle is slightly larger than 90 degree；When second coupling line 32 and the second microstrip line 34 form quasi- L-shape, angle between the two is slightly larger than 90
Degree.
The coupling line 32 of first coupling line 31 and second is the metal copper sheet of width gradual change formula strip structure.This hair
The bright width gradual change formula strip structure for defining the first coupling line 31 refers to the width of the first coupling line 31 along the first coupling line
The shape and structure that 31 free end becomes narrow gradually to the connection end of the first coupling line 31, the width gradual change formula of the second coupling line 32 is long
List structure refers to the width of the second coupling line 32 free end along the second coupling line 32 to the connection end of the second coupling line 32
Shape and structure.In the present embodiment, the connection end of the first coupling line 31 refers to the one end for being connected to the first microstrip line 33, the
The free end of one coupling line 31 refers to the one end for being not attached to the first microstrip line 33；The connection end of second coupling line 32 refers to connection
To one end of the second microstrip line 34, the free end of the second coupling line 32 refers to the one end for being not attached to the second microstrip line 34.
Shown in reference picture 3, Fig. 3 is the present invention applied to a monopole spoke in the double-frequency quadrifilar helix antenna of satellite navigation
Penetrate the planar structure schematic diagram of arm.The double-frequency quadrifilar helix antenna applied to satellite navigation that the present invention is designed, to work, GPS is defended
Exemplified by dual frequency characteristics of the working frequency range of No. two satellite navigation systems of working frequency range and the Big Dipper of star navigation system to realize antenna,
Illustrate the first coupling line 31, the second coupling line 32, the first microstrip line 33 and the second microstrip line 34 by specific embodiment
Length and width.
In the present embodiment, the coupling line 32 of the first coupling line 31 and second is the gold of width gradual change formula strip structure
Belong to copper sheet, the thickness for constituting the metal copper sheet of the first coupling line 31 and the second coupling line 32 is 35um.Wherein, the first coupling line
31 length is La=147.8mm, the width W of the free end of the first coupling line 31a=15mm, the connection end of the first coupling line 31
Width be equal to the first microstrip line 33 width, be Wc=10mm；The length of second coupling line 32 is Lb=101mm, the second coupling
The width W of the free end of zygonema 32b=15mm, the width of the connection end of the second coupling line 32 is equal to the width of the second microstrip line 34
Degree, is Wd=5mm.
In the present embodiment, the first microstrip line 33 and the metal copper sheet that the second microstrip line 34 is rectangular configuration, constitute first
The thickness of the metal copper sheet of the microstrip line 34 of microstrip line 33 and second is 35um.Wherein, the length of the first microstrip line 33 is Lc=
23mm, the width of the first microstrip line 33 is Wc=10mm；The length of second microstrip line 33 is Ld=27.5mm, the second microstrip line 34
Width be Wd=5mm.
Shown in reference picture 4, correspondence when Fig. 4 is the brachium change of the monopole radiation arm of double-frequency quadrifilar helix antenna of the present invention
The schematic diagram of reflectance factor first.As shown in figure 4, as the length L for fixing the second coupling line 32bDuring=101mm, the first coupling line
31 length LaRespectively equal to 147.8mm, 158.7mm and 169.6mm when, Fig. 4 has reacted the first coupling of monopole radiation arm 30
The change of the length of zygonema 31 reflectance factor corresponding when changing.Simultaneously figure 4, it is seen that when the first coupling line
When 31 length La becomes big, high-frequency resonant point is had almost no change, and low-frequency resonant point is moved to low frequency, i.e., moved from 1.19GHz
To 1.09GHz.
Shown in reference picture 5, correspondence when Fig. 5 is the brachium change of the monopole radiation arm of double-frequency quadrifilar helix antenna of the present invention
The schematic diagram of reflectance factor second.As shown in figure 5, as the length L for fixing the first coupling line 31aDuring=147.8mm, the second coupling
The length L of line 32bRespectively equal to 101mm, 98.8mm and 92.5mm when, Fig. 5 reacted monopole radiation arm 30 second coupling
The change of the length of line 32 reflectance factor corresponding when changing.Simultaneously from figure 5 it can be seen that when the second coupling line 32
Length LbBecome hour, low-frequency resonant point has almost no change, and high-frequency resonant point is moved to high-frequency mobile from 1.58GHz
1.69GHz。
It can be seen from Fig. 4 and Fig. 5, designer can constitute two couplings of each monopole radiation arm 30 by changing
The length L of lineaAnd LbDesign, so that it may so that double-frequency quadrifilar helix antenna is operated in two different working frequencies simultaneously.Due to
Four monopole radiation arms 30 are set using the side surface of cylindric dielectric 20, and using the coupling line conduct of two Length discrepancies
Monopole radiation arm 30, therefore make antenna that there are good dual frequency characteristics.
Double-frequency quadrifilar helix antenna of the present invention sets four monopoles by using the side surface of cylindric dielectric 20
Sub- radiation arm 30, with good antenna radiation pattern and circular polarization characteristics, and can improve antenna gain；Meanwhile, using two
The coupling line of root Length discrepancy is as monopole radiation arm 30, and designer can make day by changing the Design of length of two coupling lines
Line is operated in two different working frequencies simultaneously, is realized the dual frequency characteristics of antenna, be can be widely applied to satellite navigation system
In system.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or the equivalent function conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of double-frequency quadrifilar helix antenna applied to satellite navigation, including pcb board, cylindric dielectric and antenna metal
Ground, is arranged on the lower surface of pcb board the antenna metal, it is characterised in that the wall outer surface of the cylindric dielectric
It is spiral that around four monopole radiation arms are printed with, the end of each monopole radiation arm is provided with a metal copper post,
The bottom of the cylindric dielectric is fixed on pcb board by four metal copper posts, and each monopole radiation arm includes the
One coupling line, the second coupling line, the first microstrip line and the second microstrip line, wherein：
One end that the connection end of first coupling line is connected to the first microstrip line makes the first coupling line and the first microstrip line formation L
The shape of shape or quasi- L-shaped, the other end of first microstrip line connects a metal copper post；
One end that the connection end of second coupling line is connected to the second microstrip line makes the second coupling line and the second microstrip line formation L
The shape of shape or quasi- L-shaped, the other end of second microstrip line is connected to the junction of the first microstrip line and the first coupling line；
First coupling line and the second coupling line are the metal copper sheet of width gradual change formula strip structure, first micro-strip
Line and the metal copper sheet that the second microstrip line is rectangular configuration；
Four metal copper posts are equidistant to be symmetricly set on the lower circumference of cylindric dielectric, four metal copper post conducts
Four input ports of the double-frequency quadrifilar helix antenna, the signal amplitude of each input port input is identical and phase phase successively
Poor 90 degree.
2. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 1, it is characterised in that first coupling
The length of zygonema is La=147.8mm, the width W of the free end of the first coupling linea=15mm, the connection end of the first coupling line
Width is equal to the width of the first microstrip line, is Wc=10mm.
3. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 2, it is characterised in that second coupling
The length of zygonema is Lb=101mm, the width W of the free end of the second coupling lineb=15mm, the width of the connection end of the second coupling line
Degree, equal to the width of the second microstrip line, is Wd=5mm.
4. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 3, it is characterised in that described first is micro-
Length with line is Lc=23mm, the width of the first microstrip line is Wc=10mm, the length of the second microstrip line is Ld=27.5mm,
The width of second microstrip line is Wd=5mm.
5. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 1, it is characterised in that the composition the
One coupling line, the second coupling line, the thickness of the metal copper sheet of the first microstrip line and the second microstrip line are 35um.
6. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 1, it is characterised in that the cylindrical shape
The circular cylinder radius of dielectric is 7~10cm.
7. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 1, it is characterised in that the antenna gold
Possession is the deposited copper metal piece for being arranged on pcb board lower surface.
8. the double-frequency quadrifilar helix antenna of satellite navigation is applied to as claimed in claim 1, it is characterised in that the pcb board
Connect four metal copper posts position at corrosion have four circular holes to feed, four metal copper posts by four circular holes from
The upper surface of pcb board penetrates to the lower surface of pcb board and not contacted with the antenna metal.
9. the double-frequency quadrifilar helix antenna applied to satellite navigation as described in any one of claim 1 to 8, it is characterised in that
The relative dielectric constant of the pcb board, thickness of slab is 0.762mm.
10. the double-frequency quadrifilar helix antenna applied to satellite navigation as described in any one of claim 1 to 8, it is characterised in that
The cylindric dielectric uses sheet material type to be made up of the dielectric-slab of FR4 types, and relative dielectric constant 2.2, thickness is 0.2mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225848.8A CN107146942A (en) | 2017-04-07 | 2017-04-07 | Double-frequency quadrifilar helix antenna applied to satellite navigation |
| PCT/CN2017/100178 WO2018184343A1 (en) | 2017-04-07 | 2017-09-01 | Dual-frequency four-arm helical antenna for application in satellite navigation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710225848.8A CN107146942A (en) | 2017-04-07 | 2017-04-07 | Double-frequency quadrifilar helix antenna applied to satellite navigation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107146942A true CN107146942A (en) | 2017-09-08 |
Family
ID=59773843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710225848.8A Withdrawn CN107146942A (en) | 2017-04-07 | 2017-04-07 | Double-frequency quadrifilar helix antenna applied to satellite navigation |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107146942A (en) |
| WO (1) | WO2018184343A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107611590A (en) * | 2017-10-16 | 2018-01-19 | 福建福大北斗通信科技有限公司 | Compact dual-frequency satellite communication hand-held terminal antenna and its application method |
| WO2018184344A1 (en) * | 2017-04-07 | 2018-10-11 | 深圳市景程信息科技有限公司 | Quadrifilar helical antenna with circular polarisation characteristics |
| CN110690561A (en) * | 2019-10-28 | 2020-01-14 | 国网思极神往位置服务（北京）有限公司 | Broadband miniaturized antenna applied to satellite navigation terminal and working method thereof |
| CN114784490A (en) * | 2022-05-05 | 2022-07-22 | 北京华镁钛科技有限公司 | Dual-frequency quadrifilar helix antenna and handheld terminal comprising same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113904103B (en) * | 2021-09-08 | 2023-05-16 | 南京信息工程大学 | Dual-band dual-mode button antenna |
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| CN203180086U (en) * | 2013-04-09 | 2013-09-04 | 四川九鼎数码科技有限公司 | Cylindrical four arm spiral antenna with gradually widened arm width |
| CN203180074U (en) * | 2013-04-09 | 2013-09-04 | 四川九鼎数码科技有限公司 | Square four arm spiral antenna with gradually widened arm width |
| CN104332704A (en) * | 2014-11-10 | 2015-02-04 | 中国电子科技集团公司第五十四研究所 | Handset terminal antenna for mobile satellite communication system |
| CN205282639U (en) * | 2015-10-19 | 2016-06-01 | 深圳市华颖泰科电子技术有限公司 | Dual -frenquency helical antenna |
| CN105514582A (en) * | 2015-12-10 | 2016-04-20 | 上海海积信息科技股份有限公司 | Four-arm spiral antenna |
| CN106058472A (en) * | 2016-06-01 | 2016-10-26 | 深圳市华信天线技术有限公司 | Dual-frequency and four-arm helical antenna and handheld terminal using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018184344A1 (en) * | 2017-04-07 | 2018-10-11 | 深圳市景程信息科技有限公司 | Quadrifilar helical antenna with circular polarisation characteristics |
| CN107611590A (en) * | 2017-10-16 | 2018-01-19 | 福建福大北斗通信科技有限公司 | Compact dual-frequency satellite communication hand-held terminal antenna and its application method |
| CN110690561A (en) * | 2019-10-28 | 2020-01-14 | 国网思极神往位置服务（北京）有限公司 | Broadband miniaturized antenna applied to satellite navigation terminal and working method thereof |
| CN110690561B (en) * | 2019-10-28 | 2023-09-22 | 国网思极神往位置服务（北京）有限公司 | Broadband miniaturized antenna applied to satellite navigation terminal and working method thereof |
| CN114784490A (en) * | 2022-05-05 | 2022-07-22 | 北京华镁钛科技有限公司 | Dual-frequency quadrifilar helix antenna and handheld terminal comprising same |
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