CN206864621U - The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate - Google Patents
The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate Download PDFInfo
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- CN206864621U CN206864621U CN201720683282.9U CN201720683282U CN206864621U CN 206864621 U CN206864621 U CN 206864621U CN 201720683282 U CN201720683282 U CN 201720683282U CN 206864621 U CN206864621 U CN 206864621U
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Abstract
The utility model discloses the Big Dipper being produced on Watch glass dial plate/GPS circular polarisation reception antennas, belong to intelligent watch technical field, radiating element is made up of four curved metal spiral arms, four curved metal spiral arms, which surround, is arranged on glass dial plate top surface edge, dielectric layer is arranged at intervals in the lower section of glass dial plate, in dielectric layer upper surface the first metal is set, feed circuit is set in dielectric layer lower surface；One end of every curved metal spiral arm and one end of metal feeder are respectively connected with, and the metal feeder other end is connected with the output end of feed circuit；One end of short-circuit arm is connected with curved metal spiral arm, and the other end is connected with the first metal.The utility model has high-gain, low axle than the characteristic with broad beam, there is preferable reception to right-handed circular polarization signal, realize the planarization of four-arm spiral antenna, realize 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 Big Dipper/GPS being produced on Watch glass dial plate
Circular polarisation reception antenna.
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 Watch glass
The Big Dipper/GPS circular polarisation reception antennas on dial plate, to meet that user defends for carrying out quick, high accuracy using intelligent watch
The use demand of star positioning.
Technical scheme：In order to realize above-mentioned purpose of utility model, the utility model adopts the following technical scheme that：
The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate, including penetrate unit, glass dial plate, short circuit
Arm, metal feeder, feed circuit, the first metal and dielectric layer, described radiating element be made up of four curved metal spiral arms,
Four curved metal spiral arms are arranged at intervals dielectric layer around glass dial plate top surface edge is arranged on, in the lower section of glass dial plate,
In dielectric layer upper surface the first metal is set, feed circuit is set in dielectric layer lower surface；The one of every curved metal spiral arm
One end with metal feeder is held to be respectively connected with, the metal feeder other end is connected with the output end of feed circuit；Described short-circuit arm
One end be connected with curved metal spiral arm, the other end is connected with the first metal.
Described short-circuit arm and metal feeder is four, and short-circuit arm and metal feeder are straight wire.
Curved metal jib length described in every is equal, and single curved metal spiral arm is the form of inverse-F antenna, adjusts arc
The length of shape metal spiral arm can adjust the resonant frequency of antenna.
Described feed circuit is the power distributing network of microstrip line form, and feed circuit has four output ends, each defeated
It is identical to go out the signal amplitude of end output, phase falls behind 90 ° successively along counterclockwise.
Described glass dial plate is circle.
When glass dial plate is relatively large in diameter, or required resonant frequency is higher, curved metal spiral arm is the shape of curved line.
When the smaller or required resonant frequency of glass dial plate diameter is relatively low, the curved metal line for forming curved metal spiral arm can be around
To inner ring, increase the structure of broken line.
The material of described radiating element is high conductivity material.
The pad for being easy to welding is provided with the junction of described curved metal spiral arm and metal feeder and short-circuit arm.
In the bottom surface of described dielectric layer the second metal is set with the 3rd metal；The second described metal and the 3rd
It is connected by metal throuth hole with the first metal of dielectric layer upper surface metal.
Beneficial effect：Compared with prior art, the Big Dipper/GPS circles of the present utility model being produced on Watch glass dial plate
Polarization reception 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 printed in 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 antenna radiation unit schematic diagram；
Fig. 3 is the top view of antenna feeding circuit；
Fig. 4 is the S parameter 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.
As shown in figure 1, the Big Dipper being produced on Watch glass dial plate/GPS circular polarisation reception antennas, including radiating element 1,
Glass dial plate 2, short-circuit arm 3, metal feeder 4, feed circuit 5, the first metal 6 and dielectric layer 7.Glass dial plate 2 is circle.
Radiating element 1 is printed in the top surface edge of glass dial plate 2；Radiating element 1 is made up of four curved metal spiral arms, and four
Root curved metal spiral arm is respectively connected with four metal feeders 4.Metal feeder 4 is straight wire, one end of metal feeder 4 and arc
Metal spiral arm is connected, and the other end is connected with the output end of feed circuit 5.Feed circuit 5 is the power distributing network of micro-strip form.
Short-circuit arm 3 is also four, and one end of short-circuit arm 3 is connected with curved metal spiral arm, and the other end 6 is connected with the first metal.
Radiating element 1 is rotational symmetry structure, and four curved metal spiral arms are printed in the top surface edge of glass dial plate 2.Often
Root curved metal jib length is equal, and the length of regulation curved metal spiral arm can adjust the resonant frequency of antenna.
Single curved metal spiral arm is the form of inverse-F antenna, and every curved metal spiral arm on glass dial plate 2 passes through one
Metal feeder 4 is connected with the output end of feed circuit 5, while 6 is connected by a short-circuit arm 3 with metal.Adjust short-circuit arm 3
Length and the distance between short-circuit arm 3 and metal feeder 4, the resonant frequency and circular polarisation performance of antenna can be adjusted.Short circuit
Arm 3 and metal feeder 4 are straight wire.
Feed circuit 5 is the power distributing network of microstrip line form.Micro-strip power distributing network by different impedances micro-strip
Line segment is spliced, and function is that input power is divided into quarter.Feed circuit 5 has four output ends, each output end output
Signal amplitude it is identical, phase along counterclockwise successively fall behind 90 °.The input of feed circuit 5 is connected with the sub-miniature A connector of outside,
FD feed.
As shown in figure 1, it is a kind of typical structure cross-sectional view.Include the radiating element of the marginal surface of glass dial plate 2
1st, short-circuit arm 3 and feed circuit 5.Radiating element 1 is located at the top surface edge of circular glass dial plate 2, by four curved metal spiral arms
Form, four curved metal spiral arms of radiating element 1 are connected with four metal feeders 4 respectively.Feed circuit 5 is microstrip line form
Power distributing network.Metal feeder 4 is straight wire, and one end passes through metal throuth hole and the phase of radiating element 1 on glass dial plate 2
Even, the other end is connected with the output end of feed circuit 5.Short-circuit arm 3 is straight wire, and one end leads to through the metal on glass dial plate 2
Hole connect curved metal spiral arm, the other end connection metal 6.
As shown in Fig. 2 radiating element 1 is produced on the upper surface of glass dial plate 2, it is made up of four curved metal spiral arms, its
Curved metal spiral arm is the curved metal line along the edge of glass dial plate 2.When glass dial plate 2 is relatively large in diameter, or required resonance
When frequency is higher, curved metal spiral arm is the shape of curved line 11.When the smaller or required resonant frequency of glass dial plate diameter compared with
When low, broken line 12 can be increased around to inner ring in the end of each curved line 11 by forming the curved metal line of curved metal spiral arm.
The material of radiating element 1 can be metal, such as copper or other high conductivity materials, such as conductive silver paste.If it is necessary,
It can be easy to weld in the larger pad 13 of the junction of curved metal spiral arm and metal feeder 4 and short-circuit arm 3 increase area.
As shown in figure 3, the top view of feed circuit 5.Feed circuit 5 can be realized by microstrip line, be processed with PCB technology.
For the ease of connecting next stage circuit, the second metal is set in the plane of metal conduction band same layer 61 and the 3rd metal
62.Second metal 61 and the 3rd metal 62 6 be connected by metal throuth hole with the first metal of the upper surface of dielectric layer 7.
Feed circuit 5 is spliced by the micro-strip line segment of different in width, realizes power distribution and the function of phase shift.Feed circuit it is each
The current amplitude of individual output end output is equal, and phase falls behind 90 ° successively along counterclockwise.
As Figure 4-Figure 6, the antenna performance parameters of one specific embodiment of the utility model.Curve negotiating Electromagnetic Simulation is soft
Part 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 frequencies
Section centre frequency 1.561GHz far-field region gain.Fig. 6 shows circular polarisation performance of the wrist-watch antenna on 1.561GHz.Design
Parameter is：The thickness 1mm of glass dial plate 2, diameter 20mm, dielectric constant 4.8；The thickness 0.254mm of dielectric layer 7, diameter 20mm, dielectric
Constant 2.2；First metal 6 with the spacing 9mm of glass dial plate 2；The short-circuit length 1.5mm of arm 3；The curved metal rotation of radiating element 1
Arm 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 covering Beidou satellite navigation system B1 frequency ranges and GPS L1 frequency ranges.
Claims (8)
1. the Big Dipper being produced on Watch glass dial plate/GPS circular polarisation reception antennas, it is characterised in that：Including radiating element
(1), glass dial plate (2), short-circuit arm (3), metal feeder (4), feed circuit (5), the first metal ground (6) and dielectric layer (7), institute
The radiating element (1) stated is made up of four curved metal spiral arms, and four curved metal spiral arms, which surround, to be arranged on glass dial plate (2)
Marginal surface, dielectric layer (7) is arranged at intervals in the lower section of glass dial plate (2), in dielectric layer (7) upper surface the first metal is set
(6) feed circuit (5), is set in dielectric layer (7) lower surface；One end of every curved metal spiral arm and the one of metal feeder (4)
End is respectively connected with, and metal feeder (4) other end is connected with the output end of feed circuit (5)；One end of described short-circuit arm (3) with
Curved metal spiral arm is connected, and (6) are connected the other end with the first metal.
2. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：Described short-circuit arm (3) and metal feeder (4) is four, and short-circuit arm (3) and metal feeder (4) are straight wire.
3. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：Curved metal jib length described in every is equal, and single curved metal spiral arm is the form of inverse-F antenna, adjusts arc
The length of metal spiral arm can adjust the resonant frequency of antenna.
4. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：Described feed circuit (5) is the power distributing network of microstrip line form, and feed circuit (5) has four output ends, each
The signal amplitude of output end output is identical, and phase falls behind 90 ° successively along counterclockwise.
5. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：Described glass dial plate (2) is circle.
6. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：The material of described radiating element (1) is high conductivity material.
7. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：The pad for being easy to welding is provided with the junction of described curved metal spiral arm and metal feeder (4) and short-circuit arm (3)
(13)。
8. the Big Dipper/GPS circular polarisation the reception antennas according to claim 1 being produced on Watch glass dial plate, its feature
It is：In the bottom surface of described dielectric layer (7) the second metal is set (61) and the 3rd metal ground (62)；The second described metal
Ground (61) and the 3rd metal (62) by metal throuth hole, (6) are connected with first metal of dielectric layer (7) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683282.9U CN206864621U (en) | 2017-06-13 | 2017-06-13 | The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720683282.9U CN206864621U (en) | 2017-06-13 | 2017-06-13 | The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206864621U true CN206864621U (en) | 2018-01-09 |
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ID=60831949
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720683282.9U Expired - Fee Related CN206864621U (en) | 2017-06-13 | 2017-06-13 | The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206864621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394371A (en) * | 2017-06-13 | 2017-11-24 | 东南大学 | The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate |
| CN110911819A (en) * | 2019-12-12 | 2020-03-24 | 深圳市思讯通信技术有限公司 | 2.4GHz high-frequency annular excitation element antenna |
-
2017
- 2017-06-13 CN CN201720683282.9U patent/CN206864621U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394371A (en) * | 2017-06-13 | 2017-11-24 | 东南大学 | The Big Dipper/GPS circular polarisation the reception antennas being produced on Watch glass dial plate |
| CN110911819A (en) * | 2019-12-12 | 2020-03-24 | 深圳市思讯通信技术有限公司 | 2.4GHz high-frequency annular excitation element antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |