CN206806507U - The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate - Google Patents
The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate Download PDFInfo
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- CN206806507U CN206806507U CN201720682752.XU CN201720682752U CN206806507U CN 206806507 U CN206806507 U CN 206806507U CN 201720682752 U CN201720682752 U CN 201720682752U CN 206806507 U CN206806507 U CN 206806507U
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- dial plate
- metal
- watch
- wrist
- slot
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Abstract
The utility model discloses the arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate, belong to intelligent watch technical field, glass dial plate is set above wrist-watch metal shell, the first metal is set gradually below wrist-watch metal shell, dielectric layer and feeding network；Gap radiation unit includes the gap of four rotational symmetry, and per pass gap includes being printed in the arc shaped slits of glass dial plate top surface edge, and extension is printed in straight slot two parts of wrist-watch metal shell side；Microstrip feed line is arranged on wrist-watch inside of metal outershell, and one end of microstrip feed line intersects with straight slot to be connected, and the other end of microstrip feed line is connected with the output end of feeding network.The utility model has high-gain, low axle than the characteristic with broad beam, has preferable reception to right-handed circular polarization signal, realizes the planarization of four-arm spiral antenna, realizes the miniaturization of four-arm spiral antenna；Design parameter is adjusted flexibly according to the specific dimensional structure of wrist-watch, is adapted to different watch structures.
Description
Technical field
The utility model belongs to intelligent watch technical field, and in particular to the slot-coupled plane being produced on glass dial plate
Four arm spiral circular polarized antennas.
Background technology
Intelligent watch is a kind of emerging individual terminal devices, can possess communication, positioning, health monitoring, mobile payment
Etc. function.The positioning method of intelligent watch mainly has architecture, wifi positioning and satellite fix.The advantage of satellite fix is
Its reliability and wide usage, it can be covered in no base station signal, the place of no network signal is accurately positioned.
The characteristics of due to satellite navigation and location system multiple satellite location, reception antenna needs to have broad beam characteristic, to receive
Satellite-signal from different directions；The polarization mode of satellite navigation signals is right-handed circular polarization, therefore reception antenna can have
The two kinds of selections of linear polarization and circular polarisation.Both polarization modes have application in intelligent watch, but all defective.Linear polarization day
The defects of line scheme is, the polarization loss that circularly polarized signal has 3dB is received with linear polarized antenna, can cause positioning time compared with
It is long.
Existing intelligent watch circular polarized antenna scheme is mainly used small-sized Beidou satellite navigation system (BeiDou
Navigation Satellite System, BDS) receiving module or GPS (Global Positioning System, the whole world
Alignment system) receiving module directly put into inside wrist-watch.The antenna scheme of the existing small-sized Big Dipper/GPS receiver module is usually
Microstrip antenna, by the use of high-dielectric-constant ceramics as medium to reduce size, but higher dielectric constant can cause bandwidth to reduce
And gain reduction.
Another common circular polarized antenna is four-arm spiral antenna (QuadrifilarHelixAntenna, QHA).Four
Arm helical antenna is a kind of antenna with circular polarisation and broad beam feature, and it is widely used in satellite communication and global positioning system
The technical field of radio such as system.The advantages of four-arm spiral antenna, is that compact-sized, cost is cheap, beam angle is big, Yi Jiliang
Good Circular polarization ratio.But traditional four-arm spiral antenna, overall structure are in cylinder, are not suitable for being produced on planar structure
On.And although micro-strip paster antenna is adapted to be fabricated to planar structure, but aerial radiation part is opaque metal patch, uncomfortable
Conjunction is produced on the transparent configuration such as glass surface.If using transparent conductive material, such as ITO (tin indium oxide), to make antenna
Radiant section, its sheet resistance are up to 30 to 50, and the radiation efficiency of antenna can reduce a lot.
In addition intelligent watch has special requirement as a kind of small handheld devices to the dimensional structure of terminal antenna.Hand
The characteristics of table antenna needs to meet miniaturization, low section.
Utility model content
Purpose of utility model：In order to solve the problems, such as that prior art is present, the utility model provides and is produced on glass dial plate
On the arm spiral circular polarized antenna of slot-coupled plane four, with meet user for using intelligent watch carry out it is quick, high-precision
Spend the use demand of satellite fix.
Technical scheme：In order to realize above-mentioned purpose of utility model, the utility model adopts the following technical scheme that：
The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate, including wrist-watch metal shell, seam
Gap radiating element, microstrip feed line, dielectric layer, feeding network, the first metal and glass dial plate；In described wrist-watch metal shell
Top sets glass dial plate, below described wrist-watch metal shell with setting gradually the first metal, dielectric layer and feeding network；
Described gap radiation unit includes the gap of four rotational symmetry, and per pass gap includes being printed in glass dial plate top surface edge
Arc shaped slits, and extension is printed in straight slot two parts of wrist-watch metal shell side；Described microstrip feed line is arranged on
Wrist-watch inside of metal outershell, one end of microstrip feed line intersects with straight slot to be connected, the other end of microstrip feed line and feeding network
Output end is connected.
Described feeding network is the power distributing network of microstrip line form, and input power is divided into quarter.
Described feeding network has four output ends, and the signal amplitude of each output end output is identical, and phase is along counterclockwise
Fall behind 90 ° successively.
Described microstrip feed line has four；Described gap radiation unit and microstrip feed line, which correspond, to be set.
The input of described feeding network is connected with the sub-miniature A connector of outside, FD feed.
It is connected with wrist-watch metal shell the first described metal.
In the plane of described feeding network same layer the second metal is set and the 3rd metal, the second metal and
It is connected by metal throuth hole with first metal at the dielectric layer back side 3rd metal.
Described glass dial plate is circle.
Beneficial effect：Compared with prior art, the slot-coupled plane four of the present utility model being produced on glass dial plate
Arm spiral circular polarized antenna, possesses following advantage：
(1) wrist-watch antenna radiation unit uses four arm helical structures, has high-gain, low axle than the characteristic with broad beam,
There is preferable reception to right-handed circular polarization signal；
(2) four of wrist-watch antenna radiation spiral arms are wound on flat glass piece top surface edge, rather than cylinder side
Face, realize the planarization of four-arm spiral antenna；
(3) wrist-watch antenna is fed using metal straight wire and loads the impedance matching structure of short-circuit arm, by single spiral arm
The form of inverse-F antenna is made, realizes the miniaturization of four-arm spiral antenna；
(4) wrist-watch antenna can be by with adjusting jib length, impedance matching structure and metal between glass dial plate
Distance change resonant frequency, design parameter can be adjusted flexibly according to the specific dimensional structure of wrist-watch, be adapted to difference
Watch structure.
Brief description of the drawings
Fig. 1 is the cross-sectional structure schematic diagram of antenna；
Fig. 2 is aerial radiation gap schematic diagram；
Fig. 3 is antenna feeding network schematic diagram；
Fig. 4 is the S parameter simulation result of antenna；
Fig. 5 is gain curve of the antenna at 1.561GHz；
Fig. 6 is axle ratio of the antenna at 1.561GHz.
Embodiment
The utility model is further illustrated with specific implementation example below in conjunction with the accompanying drawings.It should be understood that these embodiments are only used
In explanation the utility model rather than limitation the scope of the utility model, after the utility model has been read, this area skill
Modification of the art personnel to the various equivalent form of values of the present utility model falls within the application appended claims limited range.
Wrist-watch antenna of the present utility model is right-handed circular polarization antenna, can be produced on wrist-watch metal shell surface, can be with
Receiving terminal for the Big Dipper, GPS and other satellite navigation systems.
As shown in figure 1, the arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate, including wrist-watch gold
Belong to shell 1, gap radiation unit 2, microstrip feed line 3, dielectric layer 4, feeding network 5, the first metal 6, glass dial plate 7.Glass
Dial plate 7 is circle.
Gap radiation unit 2 is rotational symmetry structure, and gap radiation unit 2 is made up of the gap of four rotational symmetry, often
Road gap includes being printed in the arc shaped slits 21 of the top surface edge of glass dial plate 7, and extension is printed in the side of wrist-watch metal shell 1
The two parts of straight slot 22 in face.Antenna feeding classification is microstrip-fed, and microstrip feed line 3 is on the inside of wrist-watch metal shell 1 across seam
Gap radiating element 2.The width of microstrip feed line 3 and the reflectance factor of effect length antenna.Feeding network 5 is the work(of microstrip line form
Rate distributes network, and micro-strip power distributing network is spliced by the micro-strip line segment of different impedances, and function is to be divided into input power
Quarter.Feeding network 5 has four output ends, and the signal amplitude of each output end output is identical, and phase edge falls successively counterclockwise
90 ° afterwards.
Each output end of feeding network 5 is connected with microstrip feed line 3.The input of feeding network 5 and outside sub-miniature A connector
It is connected, FD feed.The one end of microstrip feed line 3 is connected with the output end of micro-strip power distributing network, and the other end is outside wrist-watch metal
Across gap radiation unit 2 on the inside of shell 1.6 it is connected with wrist-watch metal shell 1 metal.
As shown in Fig. 2 gap radiation unit 2 is located on wrist-watch metal shell 1, gap radiation unit 2 is by four rotations pair
The gap composition of title, per pass arc shaped slits extend to the side of wrist-watch metal shell 1.
As shown in figure 3, feed circuit can be realized by microstrip line, processed with PCB technology.For the ease of connection next stage electricity
Road, the second metal can be set in the plane of the same layer of feeding network 5 61 and the 3rd metal 62.Second metal ground, 61 Hes
62 6 it is connected by metal throuth hole 3rd metal with first metal at the back side of dielectric layer 4.Feeding network 5 is by different in width
Micro-strip line segment is spliced, and realizes power distribution and the function of phase shift.The electric current width of each output end output of feeding network 5
Spend it is equal, phase along counterclockwise successively fall behind 90 °.
As Figure 4-Figure 6, it is the antenna performance parameters of one specific embodiment of the utility model.Curve negotiating Electromagnetic Simulation
Software CST is obtained.Fig. 4 shows the working frequency range of wrist-watch antenna.Fig. 5 shows wrist-watch antenna in Beidou satellite navigation system B1
Frequency range centre frequency 1.561GHz far-field region gain.Fig. 6 shows circular polarisation performance of the wrist-watch antenna on 1.561GHz.If
Counting parameter is：The thickness 1mm of glass dial plate 7, diameter 20mm, dielectric constant 4.8；The thickness 0.254mm of dielectric layer 4, diameter 20mm, it is situated between
Electric constant 2.2；First metal 6 with the spacing 9mm of glass dial plate 7；The length 1.5mm of microstrip feed line 3；The spiral arm of gap radiation unit 2
Width 0.6mm.Simulation result shown in Fig. 4 shows, antenna VSWR<2 frequency range is 1.51GHz to 1.61GHz.The embodiment
Working frequency range covers Beidou satellite navigation system B1 frequency ranges and GPS L1 frequency ranges.
Claims (8)
1. the arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate, it is characterised in that：Including wrist-watch gold
With belonging to shell (1), gap radiation unit (2), microstrip feed line (3), dielectric layer (4), feeding network (5), the first metal (6) and glass
Glass dial plate (7)；Glass dial plate (7) is set above described wrist-watch metal shell (1), in described wrist-watch metal shell (1)
Lower section with setting gradually the first metal (6), dielectric layer (4) and feeding network (5)；Described gap radiation unit (2) includes four
The gap of road rotational symmetry, per pass gap include being printed in the arc shaped slits (21) of glass dial plate (7) top surface edge, Yi Jiyan
Stretch straight slot (22) two parts for being printed in wrist-watch metal shell (1) side；Described microstrip feed line (3) is arranged on wrist-watch metal
On the inside of shell (1), one end of microstrip feed line (3) intersects with straight slot (22) to be connected, the other end and transmission network of microstrip feed line (3)
The output end of network (5) is connected.
2. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：Described feeding network (5) is the power distributing network of microstrip line form, and input power is divided into quarter.
3. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：Described feeding network (5) has four output ends, and the signal amplitude of each output end output is identical, and phase is along inverse
Hour hands fall behind 90 ° successively.
4. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：Described microstrip feed line (3) has four；Described gap radiation unit (2) and microstrip feed line (3), which correspond, to be set
Put.
5. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：The input of described feeding network (5) is connected with the sub-miniature A connector of outside, FD feed.
6. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：The first described metal (6) be connected with wrist-watch metal shell (1).
7. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：In the plane of described feeding network (5) same layer the second metal is set (61) and the 3rd metal ground (62),
Second metal (61) and the 3rd metal (62) (6) are connected with first metal at dielectric layer (4) back side by metal throuth hole.
8. the slot-coupled plane four arm spiral circular polarized antenna according to claim 1 being produced on glass dial plate, its
It is characterised by：Described glass dial plate (7) is circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682752.XU CN206806507U (en) | 2017-06-13 | 2017-06-13 | The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720682752.XU CN206806507U (en) | 2017-06-13 | 2017-06-13 | The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206806507U true CN206806507U (en) | 2017-12-26 |
Family
ID=60745892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720682752.XU Expired - Fee Related CN206806507U (en) | 2017-06-13 | 2017-06-13 | The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206806507U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425262A (en) * | 2017-06-13 | 2017-12-01 | 东南大学 | The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate |
-
2017
- 2017-06-13 CN CN201720682752.XU patent/CN206806507U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107425262A (en) * | 2017-06-13 | 2017-12-01 | 东南大学 | The arm spiral circular polarized antenna of slot-coupled plane four being produced on glass dial plate |
| CN107425262B (en) * | 2017-06-13 | 2023-12-22 | 东南大学 | Slot coupling plane four-arm spiral circularly polarized antenna manufactured on glass dial plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20200613 |